Class / Patent application number | Description | Number of patent applications / Date published |
422171000 | Solid, extended surface, fluid contact type | 86 |
20080299016 | SYSTEM AND METHOD FOR SELECTIVE CATALYTIC REDUCTION OF NITROGEN OXIDES IN COMBUSTION EXHAUST GASES - A multi-stage selective catalytic reduction (SCR) unit ( | 12-04-2008 |
20080311009 | Device and Method for Supplying Fuel or Reducing Agent, and Plasma Torch - The present invention provides a device and a method for supplying a fuel or a reducing agent, where a fuel or reducing agent supplied by injection can be vaporized and/or a fuel or reducing agent having high reactivity can be provided, and provides a plasma torch ( | 12-18-2008 |
20090004069 | SEPARATION AND PURIFICATION OF FULLERENES - A method of processing fullerenes includes generating a gas stream having suspended soot particles and condensable gases, wherein the condensable gases comprising fullerenes, and separating at least a portion of the condensable gases from the suspended soot particles using a gas/solid separations process. At least a portion of the fullerenes in the condensable gases can be condensed and collected after separation of the condensable gases. | 01-01-2009 |
20090010815 | HEXAGONAL-CELL HONEYCOMB CATALYZER FOR PURIFYING EXHAUST GAS - A hexagonal-cell honeycomb catalyzer is for purifying an exhaust gas. The catalyzer comprising a support that has a plurality of cells and a purification layer that has an HC absorption layer and a three-way catalyst layer. The HC absorption layer is formed on the honeycomb-formed surface of each wall of the support. The three-way catalyst layer is formed on the surface of the HC absorption layer. Provided that the HC absorption layer has a thickness a | 01-08-2009 |
20090092524 | Configurations And Methods for Claus Plant Operation with Variable Sulfur Content - Contemplated plants include an acid gas enrichment unit in which acid gas unsuitable for feeding into a Claus plant from an upstream acid gas removal unit is separated into a concentrated hydrogen sulfide stream that is fed to the Claus plant and a carbon dioxide stream that is compressed in a compressor before sequestration, further purification, and/or recycling to a gasification unit. | 04-09-2009 |
20090104088 | Exhaust Gas Purification System for Internal Combustion Engine - An exhaust gas purification system includes: a catalyst ( | 04-23-2009 |
20090155132 | HONEYCOMB CATALYST, DENITRATION CATALYST OF DENITRATION DEVICE, AND EXHAUST GAS DENITRATION DEVICE - The present invention provides a honeycomb catalyst and an NO | 06-18-2009 |
20090214396 | Engine Exhaust Catalysts Containing Palladium-Gold - An emission control catalyst that exhibits improved CO and HC reduction performance includes a supported platinum-based catalyst, and a supported palladium-gold catalyst. The two catalysts are coated onto different layers, zones, or monoliths of the substrate for the emission control catalyst such that the platinum-based catalyst encounters the exhaust stream before the palladium-gold catalyst. Zeolite may be added to the emission control catalyst as a hydrocarbon absorbing component to boost the oxidation activity of the palladium-gold catalyst. | 08-27-2009 |
20090311146 | EXHAUST GAS TREATING APPARATUS - An exhaust gas treating apparatus includes an upstream honeycomb structure and a downstream honeycomb structure each provided along an exhaust gas flowing direction of the exhaust gas treating apparatus. Each of the plurality of honeycomb structures includes at least one honeycomb unit includes zeolite, an inorganic binder, and walls. A first ratio of weight of zeolite ion-exchanged with at least one of Cu, Mn, Ag, and V in the downstream honeycomb structure is greater than a first ratio of weight of zeolite ion-exchanged with at least one of Cu, Mn, Ag, and V in the upstream honeycomb structure. A second ratio of weight of zeolite ion-exchanged with at least one of Fe, Ti, and Co in the upstream honeycomb structure is greater than a second ratio of weight of the zeolite ion-exchanged with at least one of Fe, Ti, and Co in the downstream honeycomb structure. | 12-17-2009 |
20090317307 | EXHAUST GAS PURIFYING DEVICE - An exhaust gas purifying device including an HC adsorbent ( | 12-24-2009 |
20090324453 | Catalytic Devices for Converting Urea to Ammonia - Disclosed are apparatuses, systems, and methods for treating exhaust. The disclosed apparatus and systems typically include a catalytic device for converting aqueous urea to ammonia. The catalytic device may include a pyrolysis catalyst and a hydrolysis catalyst for converting aqueous urea to ammonia. The catalytic device typically includes an upstream face that is positioned at an angle relative to exhaust flow when the device is positioned in a selective catalytic reduction (SCR) system. | 12-31-2009 |
20100061900 | EXHAUST-GAS CONVERTING FILTER AND PRODUCTION PROCESS FOR THE SAME - An outlet-side catalytic layer | 03-11-2010 |
20100080737 | EXHAUST GAS TREATMENT CATALYST AND EXHAUST GAS TREATMENT SYSTEM - Provided are an exhaust gas treatment catalyst capable of reducing ammonia leakage rate while keeping a sufficient NO | 04-01-2010 |
20100119420 | ABATEMENT SYSTEM HAVING ENHANCED EFFLUENT SCRUB AND MOISTURE CONTROL - Apparatus for improved treatment of effluents are provided herein. In some embodiments, an abatement system may include an exhaust conduit to flow an effluent stream therethrough; a plurality of packed beds disposed in the exhaust conduit to remove non-exhaustible effluents from the effluent stream; one or more spray jets to provide an effluent treating agent between adjacent packed beds, the effluent treating agent to remove non-exhaustible effluents from the effluent stream; and a dripper disposed in the exhaust conduit above an uppermost packed bed to provide the effluent treating agent in large droplets to wet and rinse particulate from an upper surface of the uppermost packed bed substantially without forming fine droplets. | 05-13-2010 |
20100129270 | Catalyst Housing - Catalyst housings and catalyst silencer housings that include various features for modularity and for servicing and securing catalysts elements, spacers and filter elements are provided. | 05-27-2010 |
20100143209 | MICROWAVE INDUCED DESTRUCTION OF IMPURITIES FROM BIOGAS AND NITROGEN OXIDES FROM ENGINE EXHAUST - Granulated Activated Carbon (GAC) is used to remove hydrogen sulfide (H | 06-10-2010 |
20100150790 | Catalyzing Lean NOx Filter and Method of Using Same - A NOx trapping filter is provided for use in emission control systems, for example, on the exhaust gas from an internal combustion engine. The NOx trapping filter has a substrate constructed using bonded fiber structures, which cooperate to form a highly uniform open cell network, as well as to provide a uniform arrangement of pores. The substrate typically is provided as a wall-flow honeycomb structure, and in one example, is manufactured using an extrusion process. In this way, the substrate has many channel walls, each having an inlet surface and an outlet surface. The inlet surface has a uniform arrangement of pores that form a soot capture zone, where soot and other particulate matter is captured from an exhaust gas. A NOx adsorber material is disposed in the filter to trap NOx during lean operation of the engine. A NOx conversion catalyst is also disposed inside the channel wall, where NOx and excess hydrocarbons in the exhaust gas are reacted to less harmful substances when the engine system is operated in a rich condition. Because of the uniform pore structure and open cell arrangement inside the channel wall, the filter is capable of being heavily loaded with catalyst, adsorber, while avoiding undue increase in backpressure to the internal combustion engine. | 06-17-2010 |
20100178215 | Exhaust Gas Purification Apparatus - An exhaust gas purification apparatus in which layout restriction is lessened to be able to further achieve space-saving is proposed. The exhaust gas purification apparatus includes a first cylindrical housing in which an oxidation catalytic converter and a PM collection filter are contained and a second cylindrical housing in which a reducing catalytic converter and an ammonia oxidation catalytic converter are contained. The exhaust gas purification apparatus further includes a communicating pipe that connects between far end portions of both the housings, and a nozzle that is disposed in the communicating pipe and injects liquid reducing agent in exhaust gas. The two housings are closely disposed such that axis lines thereof are arranged substantially parallel. The communicating pipe is disposed such that an axis line thereof is arranged substantially parallel with the axis lines of the housings. A flow passage of the exhaust gas from the first housing through the communicating pipe to the second housing is formed into a substantial N-shape. | 07-15-2010 |
20100178216 | Exhaust Gas Purification Apparatus - An exhaust gas purification apparatus in which layout restriction is lessened to be able to further achieve space-saving is proposed. The exhaust gas purification apparatus includes a first cylindrical housing in which an oxidation catalytic converter and a PM collection filter are contained and a second cylindrical housing in which a reducing catalytic converter and an ammonia oxidation catalytic converter are contained. The exhaust gas purification apparatus further includes a communicating pipe that connects between far end portions of both the housings, and a nozzle that is disposed in the communicating pipe and injects liquid reducing agent in exhaust gas. The two housings are closely disposed such that axis lines thereof are arranged substantially parallel. The communicating pipe is disposed such that an axis line thereof is arranged substantially parallel with the axis lines of the housings. A flow passage of the exhaust gas from the first housing to the second housing is folded by the communicating pipe. | 07-15-2010 |
20100196220 | Electric Valve Left Mechanism - A valve lift mechanism for actuating a valve in the vertical direction, and a regenerative thermal oxidizer including the valve and lift mechanism is disclosed. The valve is allowed to move vertically and oscillating rotary motion is possible. Vertical movement is achieved using the valve lift mechanism without the use of compressed air. In certain embodiments, the valve lift mechanism includes a torque motor. Preferably, a screw jack is used to adjust the vertical height of the valve. Vertical movement can reduce the torque needed to rotate the valve, and also facilitates servicing of the valve. For example, if the valve experiences high temperature, and consequently expands, rotating the valve against the mating seal plate can be difficult, if not impossible. By lowering the valve slightly, the frictional forces between the valve and the mating seal plate are reduced, allowing freer rotational movement of the valve. | 08-05-2010 |
20100196221 | Selective catalytic reduction type catalyst, and exhaust gas purification equipment and purifying process of exhaust gas using the same - The present invention is an exhaust gas purification catalyst equipment, and a method of use thereof, formed by arranging a selective catalytic reduction type catalyst for purifying nitrogen oxides in exhaust gas exhausted from lean combustion engines using ammonia or urea as a reducing agent, it is provided with a selective catalytic reduction type catalyst, characterized in that said catalyst comprises a lower-layer catalyst layer (A) having an oxidative function for nitrogen monoxide (NO) in exhaust gas and an upper-layer catalyst layer (B) having an adsorbing function for ammonia on the surface of a monolithic structure type carrier (C), and that the lower-layer catalyst layer (A) comprises a noble metal component (i), an inorganic base material constituent (ii) and zeolite (iii), and the upper-layer catalyst layer (B) comprises substantially none of component (i) but the component (iii), in a flow path of exhaust gas, characterized in that a spraying means to supply an urea aqueous solution or an aqueous ammonia solution is arranged in the downstream of the aforementioned oxidation catalyst and in the upstream of aforementioned selective catalytic reduction type catalyst. | 08-05-2010 |
20100239468 | EXHAUST GAS PURIFYING APPARATUS AND METHOD FOR MANUFACTURING EXHAUST GAS PURIFYING APPARATUS - An exhaust gas purifying apparatus includes an exhaust gas treating body, a metal casing, and a holding sealing material. The exhaust gas treating body has a longitudinal direction and includes cell walls extending along the longitudinal direction to define cells between the cells. The metal casing has an inner surface and houses the exhaust gas treating body to face the inner surface. The holding sealing material is provided between the exhaust gas treating body and the inner surface of the metal casing to hold the exhaust gas treating body in the metal casing. The holding sealing material includes an inorganic fiber aggregated body. The metal casing has a corrosion area at least on a part of the inner surface. The corrosion area includes a corroded base material of the metal casing. | 09-23-2010 |
20100254862 | SELECTIVE REDUCTION CATALYST - A first porous catalytic layer is provided in an exhaust passage, and a second porous catalytic layer is stacked on the exhaust-gas downstream-side surface of the first layer. The first layer includes an iron-zeolite catalyst to decrease 60% or more of NOx in the exhaust gas within an exhaust gas temperature range of 150-400° C. The second layer includes one or more of a single catalyst, a mixed catalyst, and a complex oxide catalyst selected from iron-alumina, iron-zirconia, iron-ceria, and iron-titania, to decrease 60% or more of NOx in the exhaust gas within an exhaust gas temperature range of 400-700° C. The first and second layers cooperatively exhibit catalytic activity to decrease 70% or more of NOx in the exhaust gas within an exhaust gas temperature range of 150 to 700° C. | 10-07-2010 |
20100303677 | PARTICULATE FILTER WITH LOW SOOT LOADED COATING - A ceramic particulate filter having a porous catalytic material deposited on walls within the filter. Particulate matter is trapped in the walls of the filter and the catalytic material removes gases, such as nitrogen oxides (NOx), from gases passing through the filter. The filter, in one embodiment, is adaptable for use with internal combustion (gas and diesel) engines. A method of making the filter is also described. | 12-02-2010 |
20100316537 | EXHAUST GAS-TREATING DEVICE - An exhaust gas-treating device ( | 12-16-2010 |
20100329937 | EXHAUST GAS PURIFICATION APPARATUS - An exhaust gas purification apparatus includes an oxidation catalyst provided in an exhaust gas passage through which exhaust gas flows, a SCR catalyst provided downstream of the oxidation catalyst, a urea water passage that is formed through a urea water pipe and provided in the oxidation catalyst and a urea water supply device provided outside the exhaust gas passage for supplying urea water to the urea water passage. The urea water passage is separated from the oxidation catalyst and led downstream of the oxidation catalyst. | 12-30-2010 |
20110027135 | COMPLEX OXIDE FOR EXHAUST GAS PURIFICATION CATALYST, PRODUCTION METHOD THEREOF, COATING MATERIAL FOR EXHAUST GAS PURIFICATION CATALYST, AND DIESEL EXHAUST GAS PURIFICATION FILTER - An oxidation catalyst is provided which is capable of combusting PM in a diesel engine exhaust gas at a low temperature and which has low degradation due to heat generated during combustion (i.e., has high heat resistance). | 02-03-2011 |
20110052454 | EXHAUST GAS PURIFICATION APPARATUS - The exhaust gas purification apparatus includes an oxidation catalyst, a first selective catalytic reduction catalyst, a second selective catalytic reduction catalyst and a urea water supply device. The oxidation catalyst is provided in a passage through which exhaust gas flows. The first selective catalytic reduction catalyst is located in the passage downstream of the oxidation catalyst. The second selective catalytic reduction catalyst is located in the passage downstream of the first selective catalytic reduction catalyst and operable to adsorb more ammonia than the first selective catalytic reduction catalyst. The urea water supply device is provided for supplying urea water to the passage upstream of the first selective catalytic reduction catalyst. | 03-03-2011 |
20110116980 | PREFERENTIAL OXIDATION REACTOR - There is provided a preferential oxidation reactor having excellent carbon monoxide reducing performance while providing for self-ignition of mixed hydrogen gas. The preferential oxidation reactor includes: a first reaction unit including a first internal space connected with a first opening portion and a first catalyst capable of spontaneously igniting hydrogen mixed gas at a predetermined atmospheric temperature of the first internal space; a second reaction unit including a second internal space connected to a second opening portion and a second catalyst contained in the second internal space; and a separation layer that is positioned between the first and second catalysts so as to separate the first catalyst and the second catalyst from each other and which connects the first internal space and the second internal space to each other to be in fluid communication. | 05-19-2011 |
20110135541 | AIR POLLUTION CONTROL APPARATUS AND AIR POLLUTION CONTROL SYSTEM - An air pollution control apparatus includes at least one denitration catalyst layer for reducing the amounts of nitrogen oxides in flue gas from a boiler and oxidizing mercury with hydrogen chloride sprayed into the flue gas. Spraying pipe headers | 06-09-2011 |
20110300028 | Systems Utilizing Non-Zeolitic Metal-Containing Molecular Sieves Having The CHA Crystal Structure - Systems for treating exhaust gas incorporating catalysts comprising metal-loaded non-zeolitic molecular sieves having the CHA crystal structure, including Cu-SAPO-34, and methods for preparing such catalysts are disclosed. The catalysts can be used to remove nitrogen oxides from a gaseous medium across a broad temperature range and exhibit hydrothermal stability at high reaction temperatures. | 12-08-2011 |
20120039758 | Catalyst for Removing Nitrogen Oxides - The present invention is to provide a catalyst for removing nitrogen oxides which is capable of keeping sufficient denitrification performance, i.e., a high removal rate of nitrogen oxides in exhaust gas having a high NO | 02-16-2012 |
20120087838 | CATALYST AND METHOD OF MANUFACTURE - A catalyst system includes a first catalytic composition and a second catalytic composition. The first catalytic composition includes a homogeneous solid mixture, which includes a first catalytic material disposed on a first substrate. The pores of the solid mixture have an average diameter of greater than about 45 nanometers. The second catalytic composition includes at least one of a zeolite or a second catalytic material disposed on a second substrate. The second catalytic material includes an element selected from the group that includes tungsten, titanium, and vanadium. | 04-12-2012 |
20120087839 | EXHAUST GAS TREATMENT SYSTEM - It is intended to provide an exhaust gas treatment system, which allows for VOC removal at lower temperatures and thereby improves the durability of catalysts and suppresses carbon monoxide generation at the final outlet of the system. The present invention provides a treatment system of an exhaust gas containing a nitrogen oxide, carbon monoxide, and a volatile organic compound comprising: an exhaust gas treatment means for removing the nitrogen oxide by reduction with ammonia and partially oxidizing the VOC to CO; and a CO/VOC removal means for oxidizing the CO and partially unreacted VOC, in this order from the upstream flow of the exhaust gas. | 04-12-2012 |
20120189503 | EXHAUST-GAS PURIFICATION CATALYTIC SYSTEM - A Rh-including catalyst layer of an upstream catalyst | 07-26-2012 |
20120213674 | DIESEL OXIDATION CATALYST - The invention relates to a catalyst for purifying the exhaust gases from diesel engines, in particular an oxidation catalyst which is particularly well suited for the purification of exhaust gases from heavy goods vehicles when further exhaust gas purification units such as a particle filter and/or a nitrogen oxide reduction catalyst are installed downstream thereof. The catalyst contains two catalytically active coatings which have different compositions and of which only one is in direct contact with the outflowing exhaust gas. The coating ( | 08-23-2012 |
20120237408 | EXHAUST GAS PURIFICATION APPARATUS FOR ENGINE - An engine exhaust gas purification apparatus for engine includes a mixing device for promoting mixing of a liquid reducing agent or a precursor thereof and exhaust gas is disposed at a position at which, when an engine is operating in a predetermined operating state, the liquid reducing agent or the precursor thereof injection-supplied from an injection nozzle impinges on substantially an entire surface of the mixing device. The predetermined operating state may be, for example, an operating state in which a solute tends to deposit from the liquid reducing agent or the precursor thereof. Thus, the liquid reducing agent or the precursor thereof adhering to the mixing device or an exhaust passage is reduced in absolute amount, thereby preventing that only a solvent evaporates from the liquid reducing agent or the precursor thereof adhering to the mixing device or the exhaust passage to deposit the solute. | 09-20-2012 |
20120258015 | EXHAUST TREATMENT SYSTEM FOR AN INTERNAL COMBUSTION ENGINE - An exhaust system for an engine comprises a selective catalytic reduction (“SCR”) device having a NO | 10-11-2012 |
20120282147 | CATALYST FOR DIESEL PARTICLE FILTER, PREPARATION METHOD OF THE SAME, AND SOOT REDUCTION DEVICE OF DIESEL ENGINE INCLUDING THE SAME - A catalyst for diesel particle filter includes a platinum (Pt)-neodymium (Nd) alloy that is carried in silica, a preparation method thereof and a soot reduction device for diesel engine including the same, wherein the catalyst for diesel particle filter can maintain high catalyst activity and implement high nitrogen monoxide (NO) conversion efficiency even though it is used under the high temperature or vulcanization condition for a long time. | 11-08-2012 |
20130028808 | LARGE-CAPACITY METAL CATALYST CARRIER AND CATALYTIC CONVERTER USING SAME - Provided is a large-capacity metal catalyst support and a catalytic converter using the same, in which a number of unit catalyst support blocks are changed in a form of being effectively assembled so as to be applied to a catalytic converter that is required for processing a large amount of exhaust gas such as large vessels or plants employing a number of large-scale internal combustion engines, or large food processing devices, to thus easily assemble the unit catalyst support blocks into a large-scale assembled structure. The catalyst support includes: a number of unit catalyst support blocks in which cell formation bodies formed of a number of hollow cells that are aligned in a longitudinal direction are accommodated and stacked in a polygonal supporter wherein a catalyst is coated on the surfaces of the hollow cells; and a number of assembly members each for fixing a pair of adjacent supports that mutually contact between the stacked unit catalyst support blocks. | 01-31-2013 |
20130089471 | NON-PGM CATALYST FOR BURNING CARBON SOOT, AND FILTRATION FILTER AND EXHAUST GAS POST-PROCESSING APPARATUS USING THE SAME - The present invention provides a non-PGM catalyst for burning carbon soot without using a noble metal, the non-PGM catalyst comprising: a cerium-praseodymium complex oxide and an iron oxide, the cerium-praseodymium complex oxide impregnated with silver (Ag). The cerium-praseodymium complex oxide illustratively consists of 60 to 95 wt % of cerium oxide and 5 to 40 wt % of praseodymium oxide, and silver (Ag) impregnated in the complex oxide is 1.5 to 3.0 parts by weight of the total weight of the complex oxide. The iron oxide may be an oxide in a form of particles separate from the cerium-praseodymium complex oxide in which silver is impregnated, and may be 0.5 to 2 parts by weight of the total weight of the cerium praseodymium complex oxide. | 04-11-2013 |
20130089472 | NON-PGM CATALYST FOR BURNING CARBON SOOT, AND FILTRATION FILTER AND EXHAUST GAS POST-PROCESSING APPARATUS USING THE SAME - The present invention provides a non-PGM catalyst for burning carbon soot without using a noble metal, the non-PGM catalyst comprising: a cerium-praseodymium complex oxide and an iron oxide, the cerium-praseodymium complex oxide impregnated with silver (Ag). The cerium-praseodymium complex oxide illustratively consists of 60 to 95 wt % of cerium oxide and 5 to 40 wt % of praseodymium oxide, and silver (Ag) impregnated in the complex oxide is 1.5 to 3.0 parts by weight of the total weight of the complex oxide. The iron oxide may be an oxide in a form of particles separate from the cerium-praseodymium complex oxide in which silver is impregnated, and may be 0.5 to 2 parts by weight of the total weight of the cerium praseodymium complex oxide. | 04-11-2013 |
20130136662 | SCR ON DIESEL PARTICULAR FILTER AND METHOD FOR PRODUCING THE SAME - An SDPF (SCR on Diesel Particular Filter) includes a porous filter collecting PM (Particulate Materials) of diesel exhaust gas, an SCR (Selective Catalytic Reduction) catalyst layer coated on an exhaust gas inlet of the filter, an aluminum oxide layer coated on an exhaust gas outlet of the filter, and a precious metal catalyst layer coated on the surface of the aluminum oxide layer, and a method for producing the same. | 05-30-2013 |
20130142702 | ELECTROCHEMICAL CATALYSIS SYSTEM - The present invention relates to an electrocatalytic system for the joint treatment of oxidizing polluting entities of the NO | 06-06-2013 |
20130195731 | Copper CHA Zeolite Catalysts - Zeolite catalysts and systems and methods for preparing and using zeolite catalysts having the CHA crystal structure are disclosed. The catalysts can be used to remove nitrogen oxides from a gaseous medium across a broad temperature range and exhibit hydrothermal stable at high reaction temperatures. The zeolite catalysts include a zeolite carrier having a silica to alumina ratio from about 15:1 to about 256:1 and a copper to alumina ratio from about 0.25: 1 to about 1:1. | 08-01-2013 |
20130216441 | METHOD FOR THE PREPARATION OF A CATALYSED PARTICULATE FILTER AND CATALYSED PARTICULATE FILTER - The invention pertains to a catalysed particulate filter provided in its entire dispersion side and within its partition walls with a first catalyst being active in selective catalytic reduction of nitrogen oxides, and in its entire permeate side with a second catalyst combination with a catalyst being active in oxidation of ammonia mixed with a catalyst being active in oxidation of carbon monoxide and hydrocarbons and a method for its preparation. The mean particle size of the first catalyst is smaller than the mean pore diameter of the longitudinal porous walls, and the mean particle size of the second catalyst combination is larger than the mean pore diameter of the longitudinal walls. In the example, the first catalyst is a silica aluminium phosphate SAPO-34 promoted with 2% copper and the second catalyst is a mixture of platinum and palladium (molar ratio 3:1) supported on alumina particles and beta zeolite powder with 1.0% copper. | 08-22-2013 |
20130315790 | EXHAUST PURIFICATION SYSTEM OF INTERNAL COMBUSTION ENGINE - In an internal combustion engine, inside of an engine exhaust passage, a hydrocarbon feed valve ( | 11-28-2013 |
20140004013 | Multifunctional Exhaust Gas Purifying Filter, and Exhaust Gas Purifying Apparatus Using the Same | 01-02-2014 |
20140044603 | DEVICE FOR GENERATING AMMONIA - An exhaust line of a motor vehicle includes an upstream monolith and a downstream monolith for treating exhaust gases passing along the exhaust line. The upstream and downstream monoliths are positioned in series. | 02-13-2014 |
20140050627 | OFF GAS PURIFICATION DEVICE - An exhaust gas purification catalyst apparatus. The apparatus has a noble metal component for oxidizing NOx in an exhaust gas discharged from a diesel engine, a reducing agent spraying means for supplying the reducing agent selected from a urea component or an ammonia component, and a selective reduction catalyst (SCR) not comprising a noble metal for removing by reduction NOx by contacting with the reducing agent, in this order from the upstream side of an exhaust gas passage. Activity of the selective reduction catalyst (SCR) is maintained by setting that the noble metal component of the oxidation catalyst (DOC) comprises platinum and palladium, and ratio of platinum particles existing alone is 20% or less, or average particle diameter of the noble metal is 4 nm or larger, and by suppressing volatilization of platinum from the oxidation catalyst (DOC), even when catalyst bed temperature increases up to 900° C. | 02-20-2014 |
20140093436 | HONEYCOMB FILTER - A honeycomb filter | 04-03-2014 |
20140140899 | CATALYSED PARTICULATE FILTER AND METHOD FOR THE PREPARATION OF A CATALYSED PARTICULATE FILTER - Wall flow particulate filter catalysed at its inlet side with a catalyst having activity in the removal of residual hydro-carbons and carbon monoxide and catalysing at rich burn engine operation conditions the reaction of nitrogen oxides with hydrogen and/or carbon monoxide to ammonia and catalysed at its outlet side with a catalyst having activity in the selective reduction of NOx by reaction with ammonia being formed in the inlet side. | 05-22-2014 |
20140170030 | Aftertreatment System Using LNT and SCR - A multiple catalyst system for the treatment of exhaust gases generated by a combustion engine in an after treatment system. The system includes a substrate and a plurality of catalysts. The plurality of catalysts may provide a plurality of catalyst sections. A variety of different catalysts, as well as a variety of different combinations of catalysts, may be employed. Catalysts may include both catalysts that assist in the removal of nitrogen oxides from the exhaust gas during cold start operation of the engine, as well as catalysts that are generally more effective in removing nitrogen oxides after the temperature of the after treatment system and/or exhaust gas is elevated to normal operating temperatures. | 06-19-2014 |
20140178262 | Hollow Microsphere Catalyst Support and Methods of Making Same - Hollow porous metal oxide microspheres are provided. The microspheres may be used as a support for a catalyst, particularly an exhaust treatment catalyst for an internal combustion engine. Also provided are methods of making the microspheres, methods of using the microspheres as catalyst supports, and methods of exhaust treatment using catalyst articles comprising the microspheres. | 06-26-2014 |
20140178263 | System and Method for Retaining Aftertreatment Bricks - An aftertreatment system and method treats exhaust gasses produced by an internal combustion process or similar process. The system includes an aftertreatment module having at least one sleeve extending between a first end and a second end. One or more aftertreatment bricks may be axially inserted through an opening disposed in the first end of the sleeve. The aftertreatment brick may include an substrate matrix surrounded by a tubular, protective mantle. To prevent the aftertreatment bricks from unintentionally exiting the sleeve, a retention ring is releasably engaged with the first end of the sleeve. The retention ring may include a dimension that is less than a dimension of the opening in the first end so that at least a portion of the retention ring contacts the mantle of the aftertreatment brick. | 06-26-2014 |
20140186227 | CATALYTIC CONVERTER OF INTERNAL COMBUSTION ENGINE AND APPARATUS FOR PURIFYING EXHAUST GAS PROVIDED WITH THE SAME - A catalytic converter of an internal combustion engine may include: at least one inlet channel having an end through which an exhaust gas is flowed into and the other end which is blocked; at least one outlet channel having an end which is blocked and the other end through which the exhaust gas is discharged; and a wall defining a boundary between neighboring inlet channel and outlet channel, and adapted to flow the exhaust gas from the inlet channel to the outlet channel, wherein the wall includes a single-layered portion formed at an end portion and having a three-way catalyst layer, and a multi-layered portion being the portion other than the single-layered portion and having a three-way catalyst layer, a hydrocarbon trap layer and an insulating layer. An apparatus of purifying an exhaust gas is also provided. | 07-03-2014 |
20140219880 | Multi-Component Filters For Emissions Control - Catalytic articles, systems and methods for treating exhaust gas streams are described. A catalytic article comprising a wall flow filter having gas permeable walls, a hydrolysis catalyst, an optional soot oxidation catalyst, a selective catalytic reduction catalyst permeating the walls, an ammonia oxidation catalyst and an oxidation catalyst to oxidize CO and hydrocarbons is described. Methods of treating exhaust gas streams comprising soot, an ammonia precursor such as urea, ammonia, NO | 08-07-2014 |
20140241950 | Exhaust System for a Lean Burn IC Engine - An exhaust system ( | 08-28-2014 |
20140255262 | Porous Catalyst Washcoats - Catalyst washcoats with improved porosity and methods for making the washcoats are provided. The process comprises incorporation of an oil-in-water macroemulsion into the catalyst slurry prior to washcoating the carrier substrate, and calcining the washcoated carrier substrate to remove the oil-in-water macroemulsion. Also provided are catalyst articles comprising the washcoat and methods for abatement of exhaust gas emissions. | 09-11-2014 |
20140301907 | DIESEL EXHAUST GAS PURIFICATION CATALYST AND DIESEL EXHAUST GAS PURIFICATION SYSTEM - A diesel exhaust gas purification catalyst contains a substrate, and a catalyst layer formed on the substrate. The catalyst layer contains a carrier, a noble metal and/or an oxide thereof supported by the carrier, and a composite oxide of cerium and one or more Group III and/or Group IV elements. The diesel exhaust gas purification catalyst when in use is disposed on an upstream side of an exhaust gas stream with respect to a denitration catalyst. | 10-09-2014 |
20140314632 | Exhaust Aftertreatment Device with Integrated Shell and Baffle - An exhaust treatment device includes an inner shell, an outer shell and insulation material positioned between the inner shell and the outer shell. An inlet tube has an end in communication with a cavity defined by the inner shell. A substrate for treating engine exhaust is positioned within the inner shell. A baffle plate includes a plurality of apertures positioned such that the exhaust passes through the apertures prior to entering the substrate. The baffle plate supports an end of the inner shell and the inlet tube. | 10-23-2014 |
20140348716 | EXHAUST GAS REDUCTION DEVICE FOR HEAVY EQUIPMENT - An apparatus for reducing an exhaust gas for heavy equipment is provided, which can satisfy the intensified diesel engine exhaust gas regulation conditions through further providing of the selective catalytic reduction (SCR) device in addition to the diesel particulate filter (DPF), and minimize an influence of vibration due to engine driving through mounting of the diesel particulate filter (DPF) and the selective catalytic reduction (SCR) device on the cowl frame. The apparatus for reducing an exhaust gas includes a cowl frame mounted on one side of the main frame that is adjacent to the engine to reduce an influence due to vibration of the engine; a diesel particulate filter (DPF) having one end portion that communicates with the other end portion of the exhaust pipe and is mounted on an upper end portion of the cowl frame, provided with diesel oxidation catalyst (DOC) therein, and capturing particulate matters; a mixing pipe having one end portion that communicates with the other end portion of the diesel particulate filter, one side of which communicates with an injection device injecting a reducing agent; and a selective catalytic reduction (SCR) device mounted on an upper end portion of the cowl frame to communicate with the other end portion of the mixing pipe to accelerate a reduction reaction between the injected reducing agent and nitrogen oxides (NOx) in the exhaust gas. | 11-27-2014 |
20150023845 | AIR FILTER ASSEMBLY; COMPONENTS THEREOF; AND, METHODS - An air filter cartridge arrangement, an air cleaner assembly, and components therfor, are provided. The air filter cartridge generally has perimeter shape with a straight side and an opposite arched side. The filter cartridge includes a media pack comprising strips of single facer material, each strip comprising fluted sheet secured to a facing sheet. In an example depicted, arch-shaped sections of single facer material are nested within one another, to form media pack having a perimeter D-shape. An air cleaner assembly configured for receipt of filter cartridge is described. A particular assembly, convenient for mounting on the cowl, cowling or engine cover of an over-the-highway truck, is provided. | 01-22-2015 |
20150030508 | METHOD AND A DEVICE FOR REMOVING NITROGEN OXIDES AND SULPHUR TRIOXIDE FROM A PROCESS GAS - A catalytic reactor ( | 01-29-2015 |
20150037219 | AFTER-TREATMENT COMPONENT - An after-treatment component for receiving an exhaust stream from an internal combustion engine comprises a vessel having a first end, a second end, and an intermediate section. The vessel defines an inlet port and an outlet port. The inlet port is in fluid communication with an inlet diffuser disposed within the vessel. The inlet diffuser is in fluid communication with the inlet port and with a diesel oxidation catalyst disposed within the vessel. The diesel oxidation catalyst is in fluid communication with the inlet diffuser and with a transfer duct. The transfer duct is in fluid communication with the diesel oxidation catalyst and with an intermediate diffuser disposed within the vessel. The intermediate diffuser is in fluid communication with the transfer duct and with a catalyzed filter disposed within the vessel. The catalyzed filter is in fluid communication with the intermediate diffuser and with the outlet port. | 02-05-2015 |
20150037220 | HONEYCOMB FILTER - A honeycomb filter includes a plurality of cells and porous cell walls. Exhaust gas is to flow through the plurality of cells. The plurality of cells include exhaust gas introduction cells and exhaust gas emission cells. The honeycomb filter has a round cross sectional shape. The honeycomb filter has a ratio of length of the honeycomb filter to a diameter of the round cross sectional shape of less than 1.0. A total volume of the exhaust gas introduction cells is larger than a total volume of the exhaust gas emission cells. | 02-05-2015 |
20150118119 | THREE-WAY CATALYST AND ITS USE IN EXHAUST SYSTEMS - A three-way catalyst is disclosed. The three-way catalyst comprises a silver-containing extruded zeolite substrate and a catalyst layer disposed on the silver-containing extruded zeolite substrate. The catalyst layer comprises a supported platinum group metal catalyst comprising one or more platinum group metals and one or more inorganic oxide carriers. The invention also includes an exhaust system comprising the three-way catalyst. The three-way catalyst results in improved hydrocarbon storage and conversion, in particular during the cold start period. | 04-30-2015 |
20150125354 | CATALYTIC CONVERTER - A catalytic converter including: a cell structured first substrate; and a cell structured second substrate provided at a downstream side of the first substrate. The first substrate has a uniform cell density. The second substrate includes a center area with a first cell density and a surrounding area with a second cell density that is lower than the first cell density. The first substrate and the second substrate are mounted in tandem. | 05-07-2015 |
20150132193 | Particulate Filter Designed as a Partial Filter - The invention relates to a particulate filter ( | 05-14-2015 |
20150290587 | EXHAUST GAS PURIFICATION APPARATUS FOR INTERNAL COMBUSTION ENGINE - An object of the present invention is to appropriately remove, from an exhaust gas, HC, CO, and ammonia flowing out from a filter (SCRF) on which an SCR catalyst is carried. In the present invention, a post-catalyst | 10-15-2015 |
20150336094 | NOVEL HONEYCOMB MONOLITH STRUCTURE - Ho Honeycomb monolith structure, especially for use in mass transfer-limited processes or processes for the selective catalytic reduction (SCR) of nitrogen oxides, comprising: a plurality of cell walls defining a plurality of polygonal channels, the plurality of cell walls and channels extending in parallel along a common direction from an entrance end to an outlet end of the structure in the fluid flow direction. The transversal cross section of a polygonal channel has the shape of a convex elongated polygon, wherein at least 50% of the internal angles between two adjacent walls of the convex polygon are above 90 degrees and wherein the cell diameter ratio L | 11-26-2015 |
20150343381 | NON-PGM CATALYST FOR BURNING CARBON SOOT, AND FILTRATION FILTER AND EXHAUST GAS POST-PROCESSING APPARATUS USING THE SAME - The present invention provides a non-PGM catalyst for burning carbon soot without using a noble metal, the non-PGM catalyst comprising: a cerium-praseodymium complex oxide and an iron oxide, the cerium-praseodymium complex oxide impregnated with silver (Ag). The cerium-praseodymium complex oxide illustratively consists of 60 to 95 wt % of cerium oxide and 5 to 40 wt % of praseodymium oxide, and silver (Ag) impregnated in the complex oxide is 1.5 to 3.0 parts by weight of the total weight of the complex oxide. The iron oxide may be an oxide in a form of particles separate from the cerium-praseodymium complex oxide in which silver is impregnated, and may be 0.5 to 2 parts by weight of the total weight of the cerium praseodymium complex oxide. | 12-03-2015 |
20150352494 | Three-way Catalyst Systems Including Nb-Zr-Al-Mixed Oxide Supports, Ba-Pd, and Rh-Fe Material Compositions - The present disclosure describes zoned three way catalyst (TWC) systems including Rhodium-iron overcoat layers and Nb—Zr—Al Oxide overcoat layers. Disclosed herein are TWC sample systems that are configured to include a substrate and one or more of a washcoat layer, an impregnation layer, and/or an overcoat layer. In catalyst systems disclosed herein, closed-coupled catalysts include a first catalyst zone with an overcoat layer formed using a slurry that includes an oxide mixture and an Oxygen Storage Material (OSM). In catalyst systems disclosed herein, oxide mixtures include niobium oxide (Nb | 12-10-2015 |
20150367284 | EXHAUST GAS TREATMENT APPARATUS - An exhaust gas treatment apparatus which can reduce NOx (nitrogen oxide) produced as a by-product at the time of treating an exhaust gas by applying a three-way catalytic process is disclosed. The exhaust gas treatment apparatus has an oxidative decomposition unit configured to oxidatively decompose an exhaust gas and an exhaust gas cleaning unit configured to clean the exhaust gas after oxidative decomposition. The exhaust gas treatment apparatus includes a nitrogen oxide removing unit disposed at a stage subsequent to the oxidative decomposition unit and configured to remove a nitrogen oxide contained in the exhaust gas. The nitrogen oxide removing unit is configured to supply at least one of hydrocarbon and carbon monoxide into the exhaust gas discharged from the oxidative decomposition unit to cause the at least one of hydrocarbon and carbon monoxide to react with oxygen remaining in the exhaust gas. | 12-24-2015 |
20150377110 | ANGLED AND COMPACT EXHAUST GAS AFTERTREATMENT DEVICE - An exhaust gas aftertreatment device for an internal combustion engine comprises a housing, first and second catalytic substrates arranged inside the housing such that the first catalytic substrate is arranged upstream of the second catalytic substrate, and a reductant injector arranged in between the first and second catalytic substrates. Further, the first and second catalytic substrates are arranged such that a fluid flow direction through the exhaust gas aftertreatment device is angled. A flow redirecting wall is arranged downstream of the first catalytic substrate such that the fluid flow between the first and second catalytic substrates at least partially passes an outer circumference of the first catalytic substrate before reaching the second catalytic substrate. The redirecting wall is inclined to an outlet surface of the first catalytic substrate and the reductant injector is arranged at the redirecting wall at a position distant from the outlet surface. | 12-31-2015 |
20160001229 | PARTICULATE MATTER FILTER WITH CATALYTIC ELEMENTS - Described herein is a selective catalytic reduction (SCR) filter that includes a substrate that includes a first surface on a first side of the substrate and second surface on a second side of the substrate. The SCR filter further includes a semi-permeable membrane applied to the first surface. Additionally, the SCR filter includes an SCR washcoat applied to the second surface. | 01-07-2016 |
20160001230 | EXHAUST GAS TREATING CATALYST AND EXHAUST GAS PURIFICATION APPARATUS USING THE SAME - An exhaust gas treating catalyst further improved in denitrification performance is provided. It is an exhaust gas treating catalyst containing a complex oxide represented by the general formula ABO | 01-07-2016 |
20160008760 | NON-PGM CATALYST FOR BURNING CARBON SOOT, AND FILTRATION FILTER AND EXHAUST GAS POST-PROCESSING APPARATUS USING THE SAME | 01-14-2016 |
20160038876 | Small Pore Molecular Sieve Supported Copper Catalysts Durable Against Lean/Rich Aging for the Reduction of Nitrogen Oxides - Provided is a system for treating a flowing exhaust gas comprising a lean NOx trap, a catalyzed soot filter, an ammonia or an ammonia precursor metering system for metering ammonia or an ammonia precursor into the flowing exhaust gas; and an SCR catalyst, wherein the SCR catalyst is disposed downstream of the lean NOx trap and comprises copper and/or iron supported on a small pore molecular sieve. | 02-11-2016 |
20160101411 | COPPER CHA ZEOLITE CATALYSTS - Zeolite catalysts and systems and methods for preparing and using zeolite catalysts having the CHA crystal structure are disclosed. The catalysts can be used to remove nitrogen oxides from a gaseous medium across a broad temperature range and exhibit hydrothermal stable at high reaction temperatures. The zeolite catalysts include a zeolite carrier having a silica to alumina ratio from about 15:1 to about 256:1 and a copper to alumina ratio from about 0.25:1 to about 1:1. | 04-14-2016 |
20160101413 | CATALYSTS FOR THE REDUCTION OF AMMONIA EMISSION FROM RICH-BURN EXHAUST - A system for reducing ammonia (NH | 04-14-2016 |
20160158699 | ZONED CATALYST SYSTEM FOR REDUCING N2O EMISSIONS - A catalyst system for reducing N | 06-09-2016 |
20160158700 | ZEOLITE PROMOTED SILVER BASED CATALYST FOR NOx STORAGE - An aftertreatment system utilizes chemical reactions to treat an exhaust gas flow. A device for use within an aftertreatment system includes a silver-based NOx storage catalyst and a zeolite. The silver-based NOx storage catalyst and the zeolite store NOx through a low temperature startup period of operation. In one embodiment, the zeolite includes a barium Y zeolite. | 06-09-2016 |
20160175823 | CATALYZED SCR FILTER AND EMISSION TREATMENT SYSTEM | 06-23-2016 |
20160201539 | EXHAUST GAS PURIFICATION SYSTEM | 07-14-2016 |
20180023436 | EXHAUST GAS PURIFICATION DEVICE FOR INTERNAL COMBUSTION ENGINE | 01-25-2018 |