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Class Information
Number: 423/220
Name: Chemistry of inorganic compounds > Modifying or removing component of normally gaseous mixture > Carbon dioxide or hydrogen sulfide component
Description: Processes wherein the component is carbon dioxide (CO2










Sub-classes under this class:

Class Number Class Name Patents
423/224 By oxidizing or burning component 261
423/225 By suspension of metal oxide or hydroxide particles in liquid 81
423/222 Reacting mixture with sulfur dioxide, sulfite, or bisulfite 62
423/234 Utilizing ammonium or metal hydroxide solution 150
423/232 Utilizing carbonate as reactant 171
423/226 Utilizing organic reactant 405
423/223 Utilizing reactant containing arsenic, phosphorus, or boron 62
423/230 Utilizing solid sorbent, catalyst, or reactant 578
423/221 Utilizing thionate or thiosulfate as reactant 27


Patents under this class:
1 2 3 4 5 6 7 8 9 10 11 12

Patent Number Title Of Patent Date Issued
8702845 System and method for low NOx emitting regeneration of desiccants Apr. 22, 2014
8702847 Systems and methods for extraction of carbon dioxide from air Apr. 22, 2014
8703082 Method for capturing CO.sub.2 from exhaust gas Apr. 22, 2014
8691177 High surface area carbon and process for its production Apr. 8, 2014
8691176 Methods of producing carbonate minerals and apparatuses of producing the carbonate minerals Apr. 8, 2014
8679432 Adsorber having inner coating Mar. 25, 2014
8679431 Air pollution control system and method Mar. 25, 2014
8673257 Apparatus and method to sequester contaminants Mar. 18, 2014
8673248 Silicon material with controlled agglomerated point defects and oxygen clusters induced by the lateral surface Mar. 18, 2014
8673135 Coal liquefaction complex with minimal carbon dioxide emissions Mar. 18, 2014
8673228 System for reducing environmental pollutants Mar. 18, 2014
8668889 Air pollution control system and method Mar. 11, 2014
8663589 CO.sub.2 recovery using the sure process Mar. 4, 2014
8652428 System and method for removing a contaminant from a gas stream Feb. 18, 2014
8652237 System and process for capture of H.sub.2S from gaseous process streams and process for regeneration of the capture agent Feb. 18, 2014
8652435 High pressure reduction-oxidation desulfurization process Feb. 18, 2014
8647413 Spray process for the recovery of CO.sub.2 from a gas stream and a related apparatus Feb. 11, 2014
8647596 Systems and methods for managing emissions from an engine of a vehicle Feb. 11, 2014
8641994 Method and plant for CO.sub.2 capturing Feb. 4, 2014
8628743 Redox gas sweetening solutions Jan. 14, 2014
8628741 Off gas treatment using a metal reactant alloy composition Jan. 14, 2014
8623286 System for collecting carbon dioxide in flue gas Jan. 7, 2014
8623307 Process gas treatment system Jan. 7, 2014
8617494 Condenser and method for cleaning flue gases Dec. 31, 2013
8617499 Minimization of steam requirements and enhancement of water-gas shift reaction with warm gas temperature CO2 removal Dec. 31, 2013
8609049 Vapour suppression additive Dec. 17, 2013
8603424 CO2-sequestering formed building materials Dec. 10, 2013
8601958 Plant and process for the looping-type combustion of solid carbon-containing fuels Dec. 10, 2013
8591843 Solvent for separating acid gas components from technical gases Nov. 26, 2013
8591846 Method and device for processing sour gas rich in carbon dioxide in a Claus process Nov. 26, 2013
8591767 Functional fluid and a process for the preparation of the functional fluid Nov. 26, 2013
8585802 Carbon dioxide capture and liquefaction Nov. 19, 2013
8580208 Reactor and method for production of hydrogen sulphide Nov. 12, 2013
8580222 Process for remediation of plastic waste Nov. 12, 2013
8574453 Reversible room-temperature ionic liquids Nov. 5, 2013
8568676 Process for workup of a carbon dioxide-rich gas to be freed of sulfur components Oct. 29, 2013
8561555 Oxyfuel combustion boiler plant and operating method for the same Oct. 22, 2013
8557205 Method and device for separating of carbon dioxide from an exhaust gas of a fossil-fired power plant Oct. 15, 2013
8551434 Method of forming a syngas mixture Oct. 8, 2013
8545782 CO.sub.2 recovery apparatus and CO.sub.2 recovery method Oct. 1, 2013
8545781 Carbon dioxide adsorbent composition Oct. 1, 2013
8541619 Method for purifying flue gases from combustion plants and then producing urea Sep. 24, 2013
8540954 CO.sub.2--capture in molten salts Sep. 24, 2013
8535631 Method for the catalytic removal of carbon dioxide and sulphur dioxide from exhaust gases Sep. 17, 2013
8535630 Method and apparatus for SOx and CO.sub.2 removal from flue gas Sep. 17, 2013
8529852 Flue-gas purification and reclamation system and method thereof Sep. 10, 2013
8529855 Methods and system for removing gas components from flue gas Sep. 10, 2013
8529854 Removal of carbon dioxide from a feed gas Sep. 10, 2013
8522573 Method for production of carbon dioxide and apparatus therefor Sep. 3, 2013
8523978 Method of deacidizing a gas by means of an absorbent solution with fractionated regeneration through heating Sep. 3, 2013

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