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Class Information
Number: 422/168
Name: Chemical apparatus and process disinfecting, deodorizing, preserving, or sterilizing > Chemical reactor > Waste gas purifier
Description: Apparatus for the modification of a waste gas, prior to its discharge into the atmosphere, by chemical reaction to reduce the pollutant content thereof.










Sub-classes under this class:

Class Number Class Name Patents
422/182 Including means injecting combustion fuel into reaction chamber in direct contact with waste gas 296
422/169 Including means providing sequential purification stages 595
422/177 Including solid, extended surface, fluid contact reaction means; e.g., inert raschig rings, particulate absorbent, particulate or monolithic catalyst, etc. 1,760
422/176 Including waste gas flow distributor upstream of reaction site and within reaction chamber modifying velocity profile of gas 318
422/173 With heat exchanger for reaction chamber or reactants located therein 543


Patents under this class:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

Patent Number Title Of Patent Date Issued
8709348 Reduced sorbent utilization for circulating dry scrubbers Apr. 29, 2014
8702845 System and method for low NOx emitting regeneration of desiccants Apr. 22, 2014
8679418 Substrate fabrication Mar. 25, 2014
8679431 Air pollution control system and method Mar. 25, 2014
8679432 Adsorber having inner coating Mar. 25, 2014
8679448 Configurations and methods of treatment of sulfur-containing vent gases Mar. 25, 2014
8673227 System for removal of carbon dioxide from a process gas Mar. 18, 2014
8673228 System for reducing environmental pollutants Mar. 18, 2014
8673221 Denitrification plant Mar. 18, 2014
8673157 Photoreactor Mar. 18, 2014
8668892 Method and system for NO.sub.x removal from a flue gas Mar. 11, 2014
8668876 Configuration having two interconnected exhaust gas treatment devices Mar. 11, 2014
8668887 In situ generation of polysulfide ions using elemental sulfur for improved corrosion control, cyanide management, mercury management, arsine management and performance and reliability of acid Mar. 11, 2014
8668889 Air pollution control system and method Mar. 11, 2014
8663589 CO.sub.2 recovery using the sure process Mar. 4, 2014
8663586 High performance mercury capture Mar. 4, 2014
8663551 Animal containment facility ventilation system Mar. 4, 2014
8652410 Control method and arrangement for selective catalytic reduction Feb. 18, 2014
8652428 System and method for removing a contaminant from a gas stream Feb. 18, 2014
8647580 Gas abatement Feb. 11, 2014
8623304 Method and device for treating chlorine bypass dust and discharge gas Jan. 7, 2014
8623286 System for collecting carbon dioxide in flue gas Jan. 7, 2014
8617494 Condenser and method for cleaning flue gases Dec. 31, 2013
8613895 Process equipment contaminant removal Dec. 24, 2013
8597602 Vacuum truck scrubber system Dec. 3, 2013
8591849 On demand generation of ammonia for small industrial and commercial boilers Nov. 26, 2013
8591844 Start up catalyst heating Nov. 26, 2013
8591819 Combustion-type exhaust gas treatment apparatus Nov. 26, 2013
8591846 Method and device for processing sour gas rich in carbon dioxide in a Claus process Nov. 26, 2013
8580206 Purification of carbon dioxide Nov. 12, 2013
8574334 Mat, holding sealing material, method for producing mat, and exhaust gas purifying apparatus Nov. 5, 2013
8568673 Gas analysis device, mercury removal system, gas analysis method, and removal method for mercury in flue gas Oct. 29, 2013
8562929 Selective catalytic reduction via electrolysis of urea Oct. 22, 2013
8557207 Method and apparatus for reducing the quantity of pollutant in waste gases Oct. 15, 2013
8557205 Method and device for separating of carbon dioxide from an exhaust gas of a fossil-fired power plant Oct. 15, 2013
8545761 Chemical and biological sensor Oct. 1, 2013
8545782 CO.sub.2 recovery apparatus and CO.sub.2 recovery method Oct. 1, 2013
8545793 Device and method for condensing, separating, and storing liquid sulfur in a Claus plant Oct. 1, 2013
8535626 Exhaust gas treatment apparatus and exhaust gas treatment method 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
8524187 Thermal oxidisers, using concentrated sunlight Sep. 3, 2013
8524159 Reactor with reactor head and integrated valve Sep. 3, 2013
8518353 Reduced sorbent utilization for circulating dry scrubbers Aug. 27, 2013
8506914 N-functionalized imidazole-containing systems and methods of use Aug. 13, 2013
8506917 Gas treatment method and apparatus for circulating fluidized-bed gasification system Aug. 13, 2013
8501135 Process for the removal of sulfur compounds from gas streams Aug. 6, 2013
8501131 Method and apparatus to inject reagent in SNCR/SCR emission system for boiler Aug. 6, 2013
8501130 Carbon dioxide recovery system and method Aug. 6, 2013
8501127 Neutralization of gaseous contaminants by artificial photosynthesis Aug. 6, 2013

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