Class / Patent application number | Description | Number of patent applications / Date published |
423234000 | Utilizing ammonium or metal hydroxide solution | 22 |
20080305021 | Conditioners for the Enhancement of Mercury Removal from Combustion Gases by Various Sorbents - The present invention provides a method for lowering the rate of injection of activated carbon or carbon based sorbents for control of mercury in coal fired utility systems where the flue gas is also conditioned with SO3 or SO3/NH3 conditioning. The invention replaces the SO3 or SO3/NH3 conditioning by a water based conditioner which does not much adversely affect the efficiency of the injected activated carbon. One such water based conditioner is a composition contained in ATI-2001 available from ARKAY Technologies Inc., 609 Hancock Court, McKees Rocks, Pa. 15136. | 12-11-2008 |
20100135882 | METHODS OF SEQUESTERING CO2 - Methods of sequestering carbon dioxide (CO | 06-03-2010 |
20100226841 | PROCESS FOR SEPARATING OFF CARBON DIOXIDE - The present invention relates to a process for separating off carbon dioxide from gas mixtures by absorption using aqueous alkaline solutions, which comprises carrying out the absorption in a countercurrent flow apparatus in which the gas mixture which is to be worked up and the aqueous alkaline solution used are passed in countercurrent flow and wherein a discontinuous liquid phase forms in the interior of the countercurrent flow apparatus and the separation is carried out in the interior of the countercurrent flow apparatus in the presence of activated carbon, wherein the activated carbon is present in the interior of the countercurrent flow apparatus in an amount of 1 g to 2 kg of activated carbon per m | 09-09-2010 |
20100316548 | METHODS AND SYSTEMS FOR EFFICIENT NEUTRALIZATION OF ACID GASES - Methods and apparatuses are disclosed for the continuous treatment of gas streams contaminated with one or more acid gases, for example HCl, H | 12-16-2010 |
20110038773 | METHOD AND APPARATUS FOR REMOVING AT LEAST ONE HYDROGEN CHALCOGEN COMPOUND FROM AN EXHAUST GAS STREAM - Method for cleaning an exhaust gas or a process gas of a manufacturing process of semiconductor components, whereas the exhaust gas or process gas comprises at least one hydrogen chalcogen compound comprising at least one of the following: a) sulfur (S); b) selenium (Se); c) tellurium (Te); and d) polonium (Po), wherein said hydrogen chalcogen compounds are removed in a wet scrubber from the process gas by guiding the process gas into an aqueous solution of at least one base; supplying the least one base to the aqueous solution and extracting an output exhaust gas stream from the aqueous solution, characterized in that the amount of base supplied is controlled such that the pH-value of the solution is larger than 12. The apparatus ( | 02-17-2011 |
20110038774 | Method for Sequestering Carbon Dioxide - A method for sequestering carbon dioxide (CO | 02-17-2011 |
20110064636 | METHOD FOR REMOVAL OF CARBON DIOXIDE FROM A PROCESS GAS - The invention relates to a method of removing carbon dioxide from a process gas, the method comprising: a) allowing an ammoniated solution to enter an absorption arrangement, said absorption arrangement comprising at least a first absorber; b) contacting the ammoniated solution with the process gas in said first absorber, the ammoniated solution capturing at least a part of the carbon dioxide of the process gas; c) allowing the ammoniated solution to exit the absorption arrangement; d) cooling the ammoniated solution, wherein at least a part of the captured carbon dioxide is precipitated as solid salt; e) allowing the cooled ammoniated solution to enter a separator, in which separator at least a part of the precipitated solids are removed from the ammoniated solution, after which the ammoniated solution is allowed to exit the separator; f) heating the ammoniated solution; and g) allowing the heated ammoniated solution to re-enter the absorption arrangement. The invention also relates to a carbon dioxide removal system. | 03-17-2011 |
20110135551 | CARBON DIOXIDE CAPTURE AND RELATED PROCESSES - Processes for capturing carbon dioxide are described. The carbon dioxide may be captured from the atmosphere and/or from the waste stream of a carbon dioxide point source (e.g., power plants, chemical plants, natural gas fields, oil fields, industrial sites, etc.). The processes can involve capturing carbon dioxide using alkaline solutions (e.g., NaOH). In some processes, the carbon dioxide may react with the alkaline solution to form a product (e.g., NaHCO | 06-09-2011 |
20110256044 | METHOD FOR REMOVING HYDROGEN SULFIDE FROM GASEOUS STREAM AT NORMAL TEMPERATURE - A wet desulfurizing method for removal of H | 10-20-2011 |
20120121491 | ELECTROCHEMICAL FORMATION OF HYDROXIDE FOR ENHANCING CARBON DIOXIDE AND ACID GAS UPTAKE BY A SOLUTION - A system for forming metal hydroxide from a metal carbonate utilizes a water electrolysis cell having an acid-producing anode and a hydroxyl-producing cathode immersed in a water solution of sufficient ionic content to allow an electric current to pass between the hydroxyl-producing cathode and the acid-producing anode. A metal carbonate is placed in close proximity to the acid-producing anode. A direct current electrical voltage is provided across the acid-producing anode and the hydroxyl-producing cathode sufficient to generate acid at the acid-producing anode and hydroxyl ions at the hydroxyl-producing cathode. The acid dissolves at least part of the metal carbonate into metal and carbonate ions allowing the metal ions to travel toward the hydroxyl-producing cathode and to combine with the hydroxyl ions to form the metal hydroxide. The carbonate ions travel toward the acid-producing anode and form carbonic acid and/or water and carbon dioxide. | 05-17-2012 |
20120183462 | Electrochemical Production of Metal Hydroxide Using Metal Silicates - Systems are described for dissolving metal silicates to: produce metal hydroxide; remove carbon dioxide or other acid gases from the atmosphere or other gas mixture by reacting such gases with the metal hydroxide; penetrate or excavate metal silicates; extract metals or silicon-containing compounds from metal silicates; and produce hydrogen and oxygen or other gases. | 07-19-2012 |
20120219484 | METHOD AND APPARATUS FOR SEQUESTERING CARBON FROM ATMOSPHERIC AIR USING HYDROXIDE COMPOUND - The present invention provides a method and apparatus for sequestering carbon from atmospheric air using a hydroxide compound in a two stage process to maximize carbon dioxide capture. The first stage is provided by a coarse filter saturated with a calcium hydroxide solution. The second stage is provided by a reaction chamber having at least one spray nozzle for creating a mist of hydroxide solution within the reaction chamber. Air is drawn through the device by a fan to cause the air to first contact the hydroxide solution on the saturated filter, and then to contact the hydroxide solution in the mist sprayed within the reaction chamber. The hydroxide solution is collected in a reservoir, centrifuged to separate the captured carbon from the solution, and then recirculated back into the saturated filter and through the spray nozzles into the reaction chamber. | 08-30-2012 |
20130095017 | METHOD FOR THE TREATMENT OF PROCESS GAS FOR BIOLOGICAL H2S REMOVAL - The present invention provides a biological H | 04-18-2013 |
20130183218 | CONTROL OF A CHILLED AMMONIA PROCESS - A process of CO | 07-18-2013 |
20130209339 | Methods And Systems For Producing Hydrogen And Capturing Carbon Dioxide - Methods and systems for producing hydrogen and capturing carbon dioxide are disclosed. In some embodiments, the methods include the following: mixing magnesium bearing minerals with one or more acids and/or chelating agents to form a magnesium-rich solvent including magnesium hydroxide; mixing a gas including carbon dioxide with the magnesium-rich solvent in a reactor possibly in the presence of one or more water-gas shift catalysts; increasing a temperature and a steam pressure inside the reactor until a substantial portion of the magnesium hydroxide in the solvent and the carbon dioxide and water in the gas react to form magnesium carbonate and hydrogen; and increasing pH in the reactor thereby increasing a rate that the solvent and the carbon dioxide react. | 08-15-2013 |
20130259785 | METHOD AND SYSTEM FOR CARBON DIOXIDE REMOVAL - A system and a method is provided for removing carbon dioxide from a gas stream. One aspect of the method includes introducing a carbon dioxide-containing gas stream to an absorber. The gas stream is contacted with an ammonia-containing solvent for absorbing, with the ammonia-containing solvent, the carbon dioxide from the gas stream, thereby removing the carbon dioxide from the gas stream. | 10-03-2013 |
20140186249 | METHODS AND SYSTEMS FOR GAS FILTERING AND CARBON DIOXIDE CAPTURE - Conventionally air filters are particulate filters composed of fibrous materials in order to remove solid particulates such as dust, pollen, mold, and bacteria from the air. Accordingly, it would be beneficial to provide absorbent filters within such systems in order to address the removal of gaseous impurity components from the circulating air in addition to conventional particulate tillers. It would be further beneficial to provide such absorbent filters in a manner which is compatible with commercial and residential environments that represent the majority of such air circulation systems. It would be further beneficial to provide such absorbent filters in formats that are compatible with new system installations as well as retrofitting to existing system installations. | 07-03-2014 |
20140193319 | FLUE GAS TREATMENT METHOD - The present invention relates to a method and system for cleaning a process gas containing carbon dioxide and contaminants, by bringing the process gas into direct contact with an alkaline solution or slurry, and capturing in the alkaline solution or slurry at least a part of the contaminants of the process gas; and bringing the process gas, depleted in contaminants, into direct contact with a cooling liquid to form a cooled process gas; wherein said alkaline solution or slurry is separate from the cooling liquid. | 07-10-2014 |
20140234193 | Electrochemical Production of Metal Hydroxide Using Metal Silicates - Systems are described for dissolving metal silicates to: produce metal hydroxide; remove carbon dioxide or other acid gases from the atmosphere or other gas mixture by reacting such gases with the metal hydroxide; penetrate or excavate metal silicates; extract metals or silicon-containing compounds from metal silicates; and produce hydrogen and oxygen or other gases. | 08-21-2014 |
20150037231 | GAS STREAM MULTI-POLLUTANTS CONTROL SYSTEMS AND METHODS - In some embodiments, the invention provides systems and methods for removing carbon dioxide and/or additional components of waste gas streams, comprising contacting the waste gas stream with an aqueous solution, removing carbon dioxide and/or additional components from the waste gas stream, and containing the carbon dioxide and/or additional components, in one form or another, in a composition. In some embodiments, the composition is a precipitation material comprising carbonates, bicarbonates, or carbonates and bicarbonates. In some embodiments, the composition further comprises carbonate and/or bicarbonate co-products resulting from co-processing SOx, NOx, particulate matter, and/or certain metals. Additional waste streams such as liquid, solid, or multiphasic waste streams may be processed as well. | 02-05-2015 |
20160107118 | WATER RECYCLING IN A CO2 REMOVAL PROCESS AND SYSTEM - Apparatuses, systems, and methods related to removing carbon dioxide from a gas stream are provided. Gas streams can be waste gas streams or natural gas streams. The systems and methods for removing carbon dioxide incorporate water repurposing schemes. Still others are disclosed. | 04-21-2016 |
20160375402 | Method And Apparatus For Chemical Removal Of Acid Gas From Combustion Emissions And Natural Gas Streams - A method of treating acid gas from fuel emissions or ambient air is performed by contacting the acid gas with a highly reactive reductant that has been prepared in a vessel positioned with two electrodes separated by a membrane. An electric potential is applied across the electrodes at a selected voltage and current necessary to generate a strong reductant within the cathodic cell. The reductant is pumped from the cathodic cell to a second vessel. Acid gas from fossil fuel emissions is introduced into the second vessel and upon contacting the cathodic reductant converts into its constituent salt thus sequestering the acid gas within a salt and keeping it from entering the atmosphere. Accordingly, acid gas within ambient gas can be introduced into the second chamber and sequestered in the same manner. | 12-29-2016 |