Entries |
Document | Title | Date |
20080223269 | METHOD AND APPARATUS FOR BIOMASS TORREFACTION USING CONDUCTION HEATING - A method for torrefaction of wood which includes providing a first endless conveyor belt; heating the first endless belt; and positioning a planar wood product on the first belt to heat the wood product by conduction to achieve torrefaction. Other forms provide a second endless belt that disposed in sandwich relation to wood to be torrefied. Some embodiments of the method provide a metal chamber having opposed planar sides dimensioned and configured for receiving a wood sheet with the respective opposed sides of the wood sheet in intimate thermal contact with respective opposed sides of the metal chamber. Other embodiments include the apparatus for torrefaction of an associated wood sheet. | 09-18-2008 |
20080282946 | Method and Apparatus for High Temperature Heat Treatment of Combustible Material in Particular Waste - An apparatus ( | 11-20-2008 |
20090126608 | SYSTEM, APPARATUS AND METHOD FOR COMBUSTION OF METALS AND OTHER FUELS - A system, apparatus and method for the combustion of metals and other fuels are provided. The system can include: a fuel combustion apparatus including a combustor having a combustion chamber for burning ground particles from a fuel charge, and a fuel supply apparatus for supplying the ground particles of fuel from the fuel charge to the combustor. The fuel supply system can include a fuel charge holder assembly to house and store the fuel charge, a grinder assembly including a grinder housed within the charge holder assembly and configured to pulverize the fuel charge to produce a combustible fuel to be consumed in the combustion chamber, and a fuel charge linear feed assembly including a piston in contact with the fuel charge within the charge holder assembly to selectively bias the fuel charge into the grinder to thereby a control consumption rate of the fuel charge. Exhaust from the combustion chamber can be used in the incineration of radioactive, chemical and mixed hazardous materials, and in the propulsion of a vehicle in both an air or water environment. | 05-21-2009 |
20090288584 | Conversion of waste into highly efficient fuel - Solid combustible waste materials are converted into highly efficient fuel by subjecting such materials to size reduction in suitable size-reducing equipment. The last piece of the equipment is a mill which pulverizes the waste materials into fine particles having a high surface to mass ratio and forming a highly efficient fuel when these particles are directly injected into a combustion reactor operating at high temperature. | 11-26-2009 |
20100006013 | ENERGY RECOVERY AND TRANSFER SYSTEM AND PROCESS - A process for energy recovery and transfer including: warming fresh air in a heat recovery and pressure control unit; feeding waste feed and the warm fresh air into a processor; reducing a moisture content of the waste feed by breaking the waste feed into a fuel powder in the warm fresh air in the processor; filtering contaminated air through an initial filter to remove the fuel powder from the contaminated air; pre-heating the contaminated air in the heat recovery and pressure control unit; raising the temperature of the pre-heated contaminated air in a chamber; passing the chamber discharge air through the heat recovery and pressure control unit to pre-heat contaminated air passing on to the chamber and to warm fresh air passing on to the processor; and filtering terminal air through a terminal filter to remove particles from the terminal air. | 01-14-2010 |
20100024697 | PREPARATION OF FUEL USABLE IN A FOSSIL-FUEL-FIRED SYSTEM - A fossil-fuel-fired system, which includes an emissions-control-agent dispenser, a furnace, an emissions monitor and, optionally, a controller, is disclosed. The emissions-control-agent dispenser provides a prescribed amount of organic-emissions-control agent, such as, for example, an opacity-control agent to the fossil-fuel-fired system. The furnace includes an exhaust communicating with the atmosphere. The emissions monitor is capable of measuring at least one property of the flue-gas communicated through the exhaust to the atmosphere. For example, when an organic-emissions-control agent is an opacity-control agent, the emissions monitor has the capability of at least measuring opacity. When included, the controller communicates with at least the emissions-control-agent dispenser and the emissions monitor. | 02-04-2010 |
20100154690 | METHOD FOR INJECTING A SUBSTANCE INTO A BOILER OF A GARBAGE INCINERATION PLANT - A method is provided for injecting a substance into a boiler of a garbage incineration plant using a gaseous propellant, the substance being conducted, starting from at least one distributor, via lines which branch off from the distributor, in each case to a nozzle which is assigned to the respective line and by means of which the substance and the propellant are injected into the boiler. The substance quantity to be conducted to the respective nozzle is set in the distributor. The substance and the propellant are combined upstream of the branch-off with the respective line. | 06-24-2010 |
20100199896 | METHOD FOR INCREASING COMBUSTION EFFICIENCY - The present invention discloses a method for increasing combustion efficiency, which comprises steps of: providing a combustible material with the components thereof having an identical ignition point, and placing the combustible material in a combustion space; measuring an ambient temperature of the combustion space, and predetermining a first temperature higher than the ambient temperature; heating the combustible material to the first temperature in a non-combustion way; supplying to the combustion space a combustion-supporting gas having a second temperature higher than the first temperature, and the combustion-supporting gas is air; and igniting the combustible material to be burned in the combustion space. | 08-12-2010 |
20100251946 | System, Apparatus and Method For Combustion of Metals and Other Fuels - A system, apparatus and method for the combustion of metals and other fuels are provided. The system can include a fuel combustion apparatus including a combustor having a combustion chamber for burning ground particles from a fuel charge, and a fuel supply apparatus for supplying the ground particles. The fuel supply system can include a fuel charge holder assembly to house and store the fuel charge, a grinder assembly including a grinder configured to pulverize the fuel charge to produce a combustible fuel, and a fuel charge linear feed assembly including a piston in contact with the fuel charge to selectively bias the fuel charge into the grinder to control the consumption rate. Exhaust from the combustion chamber can be used in the incineration of radioactive, chemical and mixed hazardous materials, and in the propulsion of a vehicle in both an air or water environment. | 10-07-2010 |
20100319595 | Method for the production of thermally advanced feedlot biomass (TAFB) for use as fuel - A method for the production of animal feedlot biomass for use as fuel in a reactor comprises surfacing a feedlot with a feedlot surfacing material. In addition, the method comprises collecting an animal feedlot biomass from the feedlot. Further, the method comprises preparing the collected biomass for use as fuel. | 12-23-2010 |
20110030592 | ADDITIVES FOR MERCURY OXIDATION IN COAL-FIRED POWER PLANTS - The present invention is directed to an additive, primarily for low sulfur and high alkali coals, that includes a transition metal and optionally a halogen to effect mercury oxidation. | 02-10-2011 |
20110067610 | WATER RECOVERY FROM FLUE GAS IN STEAM-ASSISTED PRODUCTION - A method for introducing flue gas in a steam-assisted production facility into a vapor-liquid contactor. In this method the flue gas comprises boiler combustion products selected from at least one of commercial pipeline natural gas and produced gas. The flue gas is cooled with the vapor-liquid contactor to condense a portion of the water vapor in the flue gas to produce a water stream. The water stream is then recirculated and cooled in an air cooler to produce recirculating water exiting the bottom of the vapor-liquid contactor. A water slipstream is then taken off the recirculating water to be used as make-up water. | 03-24-2011 |
20110100273 | Fuel and Method of Obtaining Thermal Energy from Biomass with Low Ash-Melting temperature, in Particular from Stillage from Bioethanol Processing, and Apparatuses for the Implementation Thereof - The invention relates to fuel formed by a fuel mixture, whose one component is formed by partially dewatered stillage from the bioethanol production and the other one are milled materials, where the ratio of total of sodium weight and potassium weight in the ashes to the weight of the other non-combustible components of a value less than 1:5.85 and/or it set up to achieve the resulting ash melting temperature of the mixture higher than 760° C. It also relates to the method of obtaining thermal energy from this mixture, in which first the critical combustion temperature causing slagging in the furnace and/or on the heat transfer surfaces and/or of the fluidised bed with melted ashes is ascertained and then the ratio of stillage from the production of bioethanol and to the biomass with low melting temperature of ashes to milled materials is set up in a ratio giving a higher ash-melting temperature of the resulting mixture than the ascertained critical temperature and then the obtained partially dewatered mixture is combusted in the combustion apparatus. It also relates to the method of obtaining thermal energy from waste in the preparation of the fuel mixture, e.g. from centrate, and to the apparatuses for the implementation thereof. | 05-05-2011 |
20110107947 | Firelighter Fluid - A barbecue firelighter fluid comprises biodiesel and a biodiesel soluble natural emulsifying agent as a fuel. Natural emulsifiers include acacia, gelatine, cholesterol and lecithin. The fluid has an increased burn time compared with conventional fluids based on hydrocarbons, for example. | 05-12-2011 |
20110107948 | BIOMASS-MIXED-FIRING PULVERIZED COAL FIRED BOILER AND OPERATION METHOD OF THE BOILER - A biomass-mixed-firing pulverized coal fired boiler includes: a furnace for burning biomass fuel together with pulverized coal in a mixed state; a pulverized coal burner for supplying the pulverized coal into the furnace; a biomass burner for supplying the biomass fuel into the furnace; a biomass mill for milling the biomass fuel to be supplied to the biomass burner; a dry clinker processing unit provided below the furnace and including a clinker conveyor for carrying ashes discharged from the furnace at a furnace bottom; and a combustion-air supply unit for supplying combustion air toward the ashes discharged at the furnace bottom on the clinker conveyor, thereby to burn an unburned component of the biomass fuel contained in the ashes discharged at the furnace bottom on the clinker conveyor. | 05-12-2011 |
20110155028 | Combustion Catalyst - The present invention pertains to combustion catalysts, including processes for achieving increased thermal output from combustion processes, processes for improved combustion in boilers and furnaces, processes for reducing the emission of undesirable pollutants, and processes for increasing the combustion of carbon. | 06-30-2011 |
20110203498 | Methods, Apparatus and Systems for Improving the Operation of Cyclone Boilers - A process that uses targeted in-furnace Injection to feed a fluxing agent of the chemical family of compositions containing boron and/or alkali hydrates to either decrease heat transfer on waterwalls of utility furnaces burning solid fuels to improve steam generation, maintain steam temperature, and/or allow a protective layer of slag to form inside the barrels of cyclones on cyclone boilers burning fuels high in calcium so that the boiler can operate at a wider variety of power settings while allowing proper flow and drainage of slag from the cyclone barrels. | 08-25-2011 |
20110203499 | Reducing Mercury Emissions From The Burning Of Coal - Sorbent components containing halogen, calcium, alumina, and silica are used in combination during coal combustion to produce environmental benefits. Sorbents such as calcium bromide are added to the coal ahead of combustion and other components are added into the flame or downstream of the flame, preferably at minimum temperatures to assure complete formation of the refractory structures that result in various advantages of the methods. When used together, the components
| 08-25-2011 |
20110209647 | BIOMASS-TO-ENERGY COMBUSTION METHOD - A solid biomass-to-energy combustion method includes introducing an oxygen containing gas into a combustion chamber of a suspension furnace to form a flow of gas through the combustion chamber; injecting a particulate solid biomass fuel into the combustion chamber through a port in the furnace wall and into the gas flow, and combusting the particulate solid biomass fuel in the gas flow to form a flame in the gas flow. | 09-01-2011 |
20110232548 | METHOD FOR IMPROVING THE EFFICIENCY OF HEAT TRANSFER IN A FURNACE - An additive having as components, at least two metal oxides selected from iron, manganese, cobalt, and copper oxide, may be added to a fuel to reduce the brightness of ash produced therewith. Further, the additive serves to increase the heat transfer efficiency of furnaces. | 09-29-2011 |
20120000403 | PROCESS FOR HIGH EFFICIENCY, LOW POLLUTION FUEL CONVERSION - A process for reducing the CO | 01-05-2012 |
20120006239 | PROCESS FOR OPERATING A COAL-FIRED UTILITY BOILER - A process for operating a coal-fired utility boiler. The process has the steps of (a) providing coal and one or more additives in proximity to one or more burners in the boiler; (b) providing air to the boiler; and (c) burning the coal and the one or more additives in the boiler to generate heat and an exhaust gas. Also disclosed are a burner and a coal-fired boiler. | 01-12-2012 |
20120090517 | Control of combustion system emissions - A process for capturing undesirable combustion products produced in a high temperature combustion system in which a carbonaceous fuel is utilized. Very finely sized particles of alkaline earth carbonates or hydroxides, with or without added ground ash, are provided in slurry form and are injected into the high temperature zone of a furnace. The particles flash calcine to provide substantially unagglomerated particles having a particle size of less than about 0.5 microns to capture and neutralize SO | 04-19-2012 |
20120145053 | Method for Safely Disposing Medicines - A method for safely disposing of medicines includes converting the medicines into a partially solid mass that may be incinerated. The medicines may be treated with a bittering agent capable of denaturing the stored medicines and with a coloring agent capable of providing a characteristic color to the denatured medicines. The medicines may also be treated with a thickening agent that is capable of converting the denatured medicines into a partially solid disposable mass, prior to incinerating the medicines. | 06-14-2012 |
20120174836 | METHOD FOR REDUCING ADHESION OF ASH IN BOILER AND DEVICE FOR THE SAME - A device for reducing ash adhesion in a boiler, includes: a calculator ( | 07-12-2012 |
20120204773 | PROCESS FOR OPERATING A FURNACE WITH A BITUMINOUS COAL AND METHOD FOR REDUCING SLAG FORMATION THEREWITH - There is provided a process for operating a coal-fired furnace to generate heat. The process has the steps of a) providing the coal to the furnace and b) combusting the coal in the presence of a first slag-reducing ingredient and a second slag-reducing ingredient in amounts effective to reduce slag formation in the furnace. In one embodiment, the first slag-reducing ingredient is one or more oxygenated magnesium compounds and the second slag-reducing ingredient is selected from the group consisting of one or more oxygenated calcium compounds, one or more oxygenated silicon compounds, and combinations thereof. In another embodiment, the first slag-reducing ingredient is one or more oxygenated silicon compounds, and wherein the second slag-reducing ingredient is one or more oxygenated aluminum compounds. There are also provided methods for reducing slag formation in a coal-fired furnace. There are also provided methods for treating coal. There are also treated coals. | 08-16-2012 |
20120216728 | PULSE DETONATION DEVICE FOR A COAL BURNING SYSTEM - A pulse detonation coal burner includes a burner body having an inlet and an outlet, and a fuel introduction system coupled to the inlet of the burner body. The fuel introduction system is configured and disposed to introduce at least one fuel into the burner body. A pulse detonation device is operatively coupled to the burner body. The pulse detonation device is configured and disposed to introduce a pulse detonation wave into the burner body to ignite the at least one fuel. | 08-30-2012 |
20120216729 | REMOTE ADDITIVE APPLICATION - The present disclosure is directed to the application of additives to a feed material at a location remote from an industrial facility using the feed material. | 08-30-2012 |
20120234216 | SCENTED LIGHTER FLUID - Lighter fluid having a smoky aroma can be prepared by combining liquid smoke with aliphatic petroleum solvent. The smoke-scented lighter fluid imparts a pleasant scent while it is applied to charcoal briquets and ignited. | 09-20-2012 |
20120266793 | PROCESS FOR COGASIFYING AND COFIRING ENGINEERED FUEL WITH COAL - Described is an integrated process of cogasifying an engineered fuel, formulated to be suitable for working under reducing environment, with coal and cofiring another engineered fuel, formulated to be suitable for working under oxidizing environment, with coal to produce electric power. | 10-25-2012 |
20120272877 | Reducing Mercury Emissions From The Burning Of Coal - Sorbent components containing halogen, calcium, alumina, and silica are used in combination during coal combustion to produce environmental benefits. Sorbents such as calcium bromide are added to the coal ahead of combustion and other components are added into the flame or downstream of the flame, preferably at minimum temperatures to assure complete formation of the refractory structures that result in various advantages of the methods. When used together, the components
| 11-01-2012 |
20120285352 | PROCESS TO REDUCE EMISSIONS OF NITROGEN OXIDES AND MERCURY FROM COAL-FIRED BOILERS - A flue gas additive is provided that includes both a nitrogenous component to reduce gas phase nitrogen oxides and a halogen-containing component to oxidize gas phase elemental mercury. | 11-15-2012 |
20120312206 | METHOD FOR REDUCING SLAG IN BIOMASS COMBUSTION - Biomass is quickly becoming an important feedstock for energy generation in power plants. Due to their composition and nature, certain biomass fuels contribute to slagging, fouling, and corrosion. This invention provides a novel method of reducing or suppressing slag deposition and/or cleaning deposited slag in energy production processes in which potassium-containing solid fuels are combusted. Besides acting as a slag suppressant, further advantages of this invention are that the additive has no detrimental side-effects on capital equipment, increases slag friability, decreases slag fouling rate, reduces heat transfer corrosion as well as increasing the lifetime of the selective catalytic reduction catalyst. | 12-13-2012 |
20130008359 | COMBINED TREATMENT PROCESS OF DOMESTIC GARBAGE AND SEWAGE - A combined treatment process of domestic garbage and sewage, comprising the following steps: {circle around (1)} sorting iron out of the domestic garbage; {circle around (2)} crushing the domestic garbage in which the iron has been removed; {circle around (3)} feeding the crushed domestic garbage into a sewage treatment tank, adding water and blowing air into the sewage treatment tank, where the domestic garbage is divided into floating substances, suspended substances, and settled substances; {circle around (4)} salvaging, dehydrating and drying the floating substances and then combusting them as fuel; {circle around (5)} collecting, filtering and drying the settled substances, wherein the settled substances having a calorific value of more than 4180 kJ/kg are burnt as fuel, the burnt substances and the settled substances having a calorific value of less than 4180 kJ/kg are used to replace clay material in a cement plant or used for making bricks; {circle around (6)} adding a flocculant into the sewage in which the floating substances and the settled substances have been removed so as to make the suspended substances settle, the suspended substances which have been settled are treated according to step {circle around (5)}; and {circle around (7)} treating the sewage. The process of the present invention effectively combines the domestic garbage treatment and sewage treatment, realizing the comprehensive treatment of domestic garbage and sewage as well as efficient utilization of resources. | 01-10-2013 |
20130025514 | METHOD FOR REDUCING AIR FLOW WHEN OPERATING A COAL BURNER - An initial coal is cleaned to reduce ash content by ≧20% and yield refined coal that optimizes combustion air flow through a coal burner. This permits conveyance of pulverized refined coal in suspended condition through feeder pipes of the coal burner using reduced air flow compared to the quantity of air required to convey pulverized initial coal in suspended condition through the feeder pipes. This reduces oxygen in the primary combustion zone, lowering conversion of fuel nitrogen into NOx and instead converting it into N | 01-31-2013 |
20130074745 | SORBENTS FOR COAL COMBUSTION - Sorbent compositions containing halogen and calcium are added to coal to mitigate the release of sulfur and/or other harmful elements, including mercury, into the environment during combustion of coal containing natural levels of mercury. | 03-28-2013 |
20130104783 | BURNER ASSEMBLY AND METHODS THEREOF | 05-02-2013 |
20130125799 | SYSTEMS AND METHODS FOR COMMINUTING AND RECIRCULATING COAL COMBUSTION PRODUCTS - A method and system for reducing the un-burned carbon content in coal combustion products are disclosed. A coal combustion product is separated into a coarse particle fraction and a fine particle fraction, and the coarse particles are comminuted by milling, grinding or the like. Additives may be added of the coarse particles prior to comminution. The comminuted particles are then co-combusted with coal to burn at least a portion of the un-burned carbon contained in the original coal combustion product. | 05-23-2013 |
20130186312 | USE OF BROMINE OR BROMIDE CONTAINING ORGANIC COMPOSITIONS FOR REDUCING MERCURY EMISSIONS DURING COAL COMBUSTION - Processes and systems are provided for using bromine and/or bromide-containing organic compound to reduce mercury emissions during coal combustion. | 07-25-2013 |
20130199426 | INCREASING THE EFFICIENCY OF COMBUSTION PROCESSES - The invention provides a method of increasing the efficiency of a combustion process by adding bentonite to the flame, fireball or burner region combustion zone of the combustion process. Also provided is a combustion chamber that includes a bentonite feed system and a fuel additive composition of a bentonite such as sodium bentonite having a particle size range that may be employed in the method of the present invention. | 08-08-2013 |
20130247800 | METHOD AND APPARATUS FOR DRYING SOLID FUELS - A method for drying solid fuels prior to injection and burning in solid fuel boilers is described. High moisture content solid fuels such as bark, sludge, wet coal, etc. must be dried before they can burn. Embodiments of the present invention incorporates a fuel delivery chute integrated with the boiler wall using a flow of combustion gasses and radiant heating to partially dry the solid fuel before it reaches the combustion zone of the boiler. The combustion gasses are drawn through the delivery chute by means of the flowing fuel and air jet inductors that then blows the combustion gasses back into the boiler. A refractory wall separates the fuel chute from the boiler proper, is heated by the combustion in the boiler, and radiates heat to the fuel falling through the fuel chute. | 09-26-2013 |
20130255548 | MULTIPLE FUEL COMBUSTION SYSTEM AND METHOD - According to embodiments, a co-fired or multiple fuel combustion system is configured to apply an electric field to a combustion region corresponding to a second fuel that normally suffers from poor combustion and/or high sooting. Application of an AC voltage to the combustion region was found to increase the extent of combustion and significantly reduce soot evolved from the second fuel. | 10-03-2013 |
20130255549 | SOLID FUEL BURNER WITH ELECTRODYNAMIC HOMOGENIZATION - A solid fuel burner may include a system for electrodynamic homogenization. One or more electrodes may apply an electric field to burning solid fuel or a region proximate the burning solid fuel. The electric field causes mixing and homogenization of volatilized fractions of the solid fuel, combustion gases, and air. The improved mixing and homogenization may reduce emission of carbon monoxide (CO), reduce emission of oxides of nitrogen (NOx), reduce oxygen in flue gas, increase temperature of flue gas, and/or allow for a larger grate surface. | 10-03-2013 |
20130276682 | HOT-SIDE METHOD AND SYSTEM - The present disclosure is directed to the use of elemental or speciated iodine and bromine to control total mercury emissions. | 10-24-2013 |
20130298809 | METHOD FOR CONTROLLING NOX CONCENTRATION IN EXHAUST GAS IN COMBUSTION FACILITY USING PULVERIZED COAL - An object of the invention is to provide a method for controlling an NOx concentration in an exhaust gas in a combustion facility that uses a pulverized coal, which can easily control the NOx concentration in the exhaust gas to be discharged from a fuel facility that uses the pulverized coal as the fuel to or below a regulation value according to the Air Pollution Control Law and the like, and can also reduce an amount of a denitrifying agent or the like to be used, which is necessary for the control, by controlling the NOx concentration on the basis of the properties of the pulverized coal beforehand. The invention further includes: measuring a reaction velocity of each of chars corresponding to a plurality of types of pulverized coals beforehand; determining a relationship between the NOx concentration in the exhaust gas and the reaction velocity in advance; blending the plurality of the types of the pulverized coals so that the reaction velocity of the char becomes such a value as to correspond to a target NOx concentration or below, on the basis of the relationship; and supplying the blended pulverized coal to the combustion facility as the fuel of the combustion facility. | 11-14-2013 |
20130305972 | LOW-RANK COAL PROCESSING APPARATUS AND METHOD - An apparatus for the simultaneous drying and transport of low-rank coal is described. The apparatus has a first pipe having an inner wall surface surroundingly defining a first flow channel and an outer wall surface; a low-rank coal supply system to supply particulate low-rank coal to an inlet of the first flow channel; a transport gas supply to supply transport gas to an inlet of the first flow channel; a heating apparatus to apply heat to an outer wall surface of the first pipe along at least part of the length thereof for example in the form of a drying fluid supply to supply a drying fluid, configured such that a drying fluid is brought into contact with the outer wall surface of the first pipe along at least part of the length thereof. A system of design of thermal power plant incorporating such an apparatus is also described. A method for the simultaneous drying and transport of low-rank coal is also described. A system and method for supplying dried low-rank coal for combustion are also described. | 11-21-2013 |
20130312646 | REDUCING MERCURY EMISSIONS FROM THE BURNING OF COAL - Sorbent components containing halogen, calcium, alumina, and silica are used in combination during coal combustion to produce environmental benefits. Sorbents such as calcium bromide are added to the coal ahead of combustion and other components are added into the flame or downstream of the flame, preferably at minimum temperatures to assure complete formation of the refractory structures that result in various advantages of the methods. When used together, the components
| 11-28-2013 |
20130319303 | METHOD AND SYSTEM FOR MILLING A FUEL FOR AN OXY-FUEL COMBUSTION BURNER - The present disclosure relates to a method of milling a fuel for an oxy-fuel combustion burner, the method includes: separating air into a hot nitrogen gas stream, having a temperature of at least 150° C. and a purity of at least 98 mol-% nitrogen, and an oxygen gas stream; leading at least a part of the nitrogen gas stream to a fuel mill; milling the fuel by means of the fuel mill in a nitrogen rich atmosphere formed by means of the nitrogen gas stream; leading the at least a part of the nitrogen gas stream away from the milled fuel; leading the oxygen gas stream to the oxy-fuel combustion burner; conveying the milled fuel to the oxy-fuel combustion burner; and burning the fuel, by means of the oxy-fuel combustion burner, in an oxygen rich atmosphere formed by means of the oxygen gas stream. The present disclosure further relates to a system for milling a fuel for an oxy-fuel combustion burner as well as to a power plant comprising such a system. | 12-05-2013 |
20130333597 | Methods and Systems for Flue Gas Denitrification - A process for nitrification, in the heterogeneous phase, of the flue gases produced by a combustion furnace ( | 12-19-2013 |
20140020608 | SORBENTS FOR COAL COMBUSTION - Sorbent compositions containing halogen and calcium are added to coal to mitigate the release of sulfur and/or other harmful elements, including mercury, into the environment during combustion of coal containing natural levels of mercury. | 01-23-2014 |
20140041560 | HIGH CARBON SPENT POT LINING AND METHODS OF FUELING A FURNACE WITH THE SAME - A method of creating and using a high-carbon spent pot lining (SPL) as a fuel, including delining the high-carbon spent pot lining from an electrolytic cell and combusting the SPL in a furnace. | 02-13-2014 |
20140041561 | METHOD AND ADDITIVE FOR CONTROLLING NITROGEN OXIDE EMISSIONS - The present disclosure is directed to an additive mixture and method for controlling nitrogen oxide(s) by adding the additive mixture to a feed material prior to combustion. | 02-13-2014 |
20140053760 | REDUCING SULFUR GAS EMISSIONS RESULTING FROM THE BURNING OF CARBONACEOUS FUELS - A method of reducing sulfur emissions by applying remediation materials in a powder sorbent onto coal and combusting the coal with the materials applied. The powder sorbent contain sources of silicon, aluminum, calcium, iron, and magnesium, and ash from combustion contains the captured sulfur. | 02-27-2014 |
20140090584 | USE OF CONTAMINATED LOW-RANK COAL FOR COMBUSTION - The present invention relates generally to processes for preparing an inorganic sodium and/or chlorine contaminated low-rank coal feedstock for combustion in a fluidized fuel combustor to generate steam and, desirably, co-generate electricity. | 04-03-2014 |
20140158029 | EMISSION CONTROL SYSTEM - Methods of treating mercury contaminated gas comprising: introducing a hydrogen halide selected from HBr and HI into a mercury contaminated gas stream containing a quantity of particulate matter at an introduction rate sufficient to create a concentration of at least 0.1 ppmvd; wherein greater than 50% of all particulate matter in the mercury contaminated gas stream is a native particulate matter; contacting a quantity of active bromine with the native particulate matter; creating a doped particulate matter; coating a filtration media with the doped particulate matter; and passing a portion of the mercury contaminated gas stream through the doped particulate matter on the filtration media and other related methods are disclosed herein. | 06-12-2014 |
20140245936 | METHODS FOR REMOVAL OF MERCURY FROM FLUE GAS - Methods and systems for reducing mercury emissions are provided herein. The methods, generally, include the steps of burning a heavy metal containing fuel source and introducing sorbent materials and introducing one or more halogen compounds into the combustion chamber and/or exhaust stream to remove the heavy metal. | 09-04-2014 |
20140299028 | REDUCING ENVIRONMENTAL POLLUTION AND FOULING WHEN BURNING COAL - Powder components containing calcium, alumina, silica, iron, magnesium, and a halogen sorbent are used in combination during coal combustion to produce environmental benefits. Sorbents are added to the coal ahead of combustion and/or are added into the flame or downstream of the flame. The alkalinity and chlorine of the powder is minimized in order to mitigate unwanted fouling, especially when used with sub-bituminous and lignite coals. | 10-09-2014 |
20150053123 | LOW SULFUR COAL ADDITIVE FOR IMPROVED FURNACE OPERATION - The present invention is directed to additives for coal-fired furnaces, particularly furnaces using a layer of slag to capture coal particles for combustion. The additive(s) include iron, mineralizer(s), handling aid(s), flow aid(s), and/or abrasive material(s). The iron and mineralizers can lower the melting temperature of ash in low-iron, high alkali coals, leading to improved furnace performance. | 02-26-2015 |
20150059625 | LOW EMISSION FUEL PELLET - Low emission fuel pellets are formed from fuel sources such as non-recyclable paper and plastic materials by combining sorbent(s) to the interior of the pellet as it is being formed or coating the pellet with sorbent(s) after it has been formed. The sorbent compound is a metal compound preferably formed from an alkaline or alkali earth metal or copper which will react with any acid gases and heavy metals formed during the burning of the pellets to form corresponding stable metal salts, which will remain in the ash. | 03-05-2015 |
20150096480 | Reducing Mercury Emissions From The Burning of Coal - Sorbent components containing halogen, calcium, alumina, and silica are used in combination during coal combustion to produce environmental benefits. Sorbents such as calcium bromide are added to the coal ahead of combustion and other components are added into the flame or downstream of the flame, preferably at minimum temperatures to assure complete formation of the refractory structures that result in various advantages of the methods. When used together, the components
| 04-09-2015 |
20150107498 | Controlling Injection of Magnesium Oxide for Controlling SO3 with Enhanced Bioler Efficiency - Disclosed is a process for controlling injection of magnesium oxide (or precursor) for reducing the concentration of sulfur trioxide in combustion gases from a combustor burning vanadium and sulfur-containing fuel while operating the boiler with enhanced efficiency. In-fuel introduction is combined with mid-temperature introduction, where both can be operated effectively, are found to be of primary importance. When in-fuel introduction will not be effective due to selectivity problems, feed can be shifted to a high-temperature zone. Where the high- or mid-temperature zone cannot be fully utilized due to obstructions for injection or insufficient soot blowers to address fouling of that zone or boiler operational changes to integrate the magnesium oxide injection is insufficient, an entire or a portion of feed can be shifted to the low-temperature zones. | 04-23-2015 |
20150122161 | Mineral Additive Blend Compositions and Methods for Operating Combustors for Avoiding Problems such as Agglomeration, Deposition, Corrosion and Reducing Emissions - The method further includes heating at least a portion of the inorganic compound-containing material and clay, such that at least a portion of the clay is at least partially calcined, and the at least partially calcined clay and functional mineral adsorb at least a portion of the inorganic volatile compounds present in the furnace and react with the ash produced during fuel combustion increasing its refractoriness. The method further includes removing at least a portion of the at least partially calcined clay and adsorbed inorganic compounds from the furnace. | 05-07-2015 |
20150300636 | COMBUSTION BOILER WITH PRE-DRYING FUEL CHUTE - A solid fuel boiler with one or more fuel chutes configured to pre-dry wet solid fuel prior to loading into a combustion chamber of the boiler, enabling higher thermal efficiencies and burning less fuel to produce the same steam quantity. The pre-drying fuel chutes pass through the boiler where hot combustion gases radiantly and convectively—heat the chute walls to dry the wet solid fuel by radiant, convective, and/or conductive heating. Agitator mechanisms or structures within the chute mix the fuel for uniform heating, break up clumps of wet fuel, regulate the speed of falling fuel, prevent sticking, dry the fuel by means of steam and/or hot air, transport and deliver a cooling medium while a chute is offline in an operating boiler, and suppress fire using steam injection. Fuel from the chute can flow into a fuel storage bin or directly into the combustion zone of the furnace. | 10-22-2015 |
20150353421 | METHOD FOR BURNING LUMP MATERIAL - A method for burning lumpy stock is performed in at least one shaft which comprises a preheating zone, a burning zone and a cooling zone. Coal with a swelling index>1 is supplied together with a transport medium via burner lances which have burner tips. The coal together with the transport medium emerges into the shaft, wherein the temperature of the coal in the burner lances is kept below a temperature value at which melt phases of the coal that is used are formed. Here, for the transportation of the coal, use is made of a transport medium which, in the shaft, in the region directly adjacent to the burner tip, forms an oxygen-depleted atmosphere in order to delay the ignition of the coal after it emerges from the burner lance. | 12-10-2015 |
20150362186 | METHODS FOR OPERATING A FURNACE - A method for combusting fuel in the presence of an alkali-containing material may include introducing fuel into a furnace configured to combust the fuel. The method may also include introducing ball clay having a moisture content of at least about 5% by weight into the furnace, and heating at least a portion of the fuel and ball clay, such that at least a portion of the ball clay is at least partially calcined, and the at least partially calcined ball clay adsorbs at least a portion of alkali present in the furnace. | 12-17-2015 |
20150377483 | PROCESS FOR OPERATING A FURNACE WITH BITUMINOUS COAL AND METHOD FOR REDUCING SLAG FORMATION THEREWITH - There is provided a process for operating a coal-fired furnace to generate heat. The process has the steps of a) providing the coal to the furnace and b) combusting the coal in the presence of a first slag-reducing ingredient and a second slag-reducing ingredient in amounts effective to reduce slag formation in the furnace. In one embodiment, the first slag-reducing ingredient is one or more oxygenated magnesium compounds and the second slag-reducing ingredient is selected from the group consisting of one or more oxygenated calcium compounds, one or more oxygenated silicon compounds, and combinations thereof. In another embodiment, the first slag-reducing ingredient is one or more oxygenated silicon compounds, and wherein the second slag-reducing ingredient is one or more oxygenated aluminum compounds. There are also provided methods for reducing slag formation in a coal-fired furnace. There are also provided methods for treating coal. There are also treated coals. | 12-31-2015 |
20160146462 | PLANT, COMBUSTION APPARATUS, AND METHOD FOR REDUCTION OF NOx EMISSIONS - A combustion apparatus includes a combustion chamber having multiple combustion zones. A first wind box is in communication with the first combustion zone to feed the fuel to be fed into the combustion chamber for initial combustion of the fuel within the first combustion zone. A second wind box has a reburner in communication with the second combustion zone. The reburner is configured to feed fuel, a reagent and a first portion of the flue gas to be recycled to the second combustion zone into the second combustion zone to reduce nitrogen oxide emissions of the apparatus. A third wind box is in communication with the third combustion zone to feed air to the third combustion zone to complete the combustion process. | 05-26-2016 |