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Class Information
Number: 423/237
Name: Chemistry of inorganic compounds > Modifying or removing component of normally gaseous mixture > Nitrogen or nitrogenous component > Ammonia
Description: Processes in which the component is ammonia (NH3

Sub-classes under this class:

Class Number Class Name Patents
423/238 Utilizing liquid as reactant 138

Patents under this class:
1 2 3 4 5 6

Patent Number Title Of Patent Date Issued
8652426 Use of aqueous guanidinium formate solutions for the selective catalytic reduction of nitrogen oxides in exhaust gases of vehicles Feb. 18, 2014
8623285 Ammonia flame cracker system, method and apparatus Jan. 7, 2014
8623303 Process for the removal of hydrogen cyanide and formic acid from synthesis gas Jan. 7, 2014
8617501 Process for removing sulphur-containing, nitrogen-containing and halogen-containing impurities contained in a synthesis gas Dec. 31, 2013
8603432 Transition metal/zeolite SCR catalysts Dec. 10, 2013
8580219 Ammonium recovery methods Nov. 12, 2013
8535628 Exhaust gas purifying catalyst Sep. 17, 2013
8524185 Integrated SCR and AMOx catalyst systems Sep. 3, 2013
8506916 Methods and devices for reducing hazardous air pollutants Aug. 13, 2013
8506917 Gas treatment method and apparatus for circulating fluidized-bed gasification system Aug. 13, 2013
8486359 Ammonium recovery from waste water using CO.sub.2 acidified absorption water Jul. 16, 2013
8470274 Method for feeding reducing agent into an exhaust gas system and corresponding exhaust gas system and motor vehicle Jun. 25, 2013
8425869 NOx purifying catalyst Apr. 23, 2013
8420038 Method for removing contaminants from a fluid stream Apr. 16, 2013
8398933 Device for preventing corrosion on a gas inlet nozzle during nitric acid condensation Mar. 19, 2013
8398945 Removal of ammonia nitrogen, ammonium nitrogen and urea nitrogen by oxidation with hypochlorite-containing solutions from exhaust air in plants for producing ammonia and urea Mar. 19, 2013
8377402 Ammonia destruction methods for use in a claus tail gas treating unit Feb. 19, 2013
8372366 NOx purifying catalyst Feb. 12, 2013
8309048 Process for producing ammonium salts Nov. 13, 2012
8303849 HCN removal from syngas using chemical and biological treatment Nov. 6, 2012
8303921 Process for producing ammonium salts Nov. 6, 2012
8298424 Apartment-shaped anaerobic digester for producing biogas Oct. 30, 2012
8293201 Method for the recovery of ammonia from a gaseous stream in a synthesis process of urea Oct. 23, 2012
8258193 Process for removal of hydrogen cyanide and ammonia from synthesis gas Sep. 4, 2012
8246791 Multi-stage column distillation (MSCD) method for osmotic solute recovery Aug. 21, 2012
8247463 Method of coproducing methanol and ammonia Aug. 21, 2012
8242049 Low temperature ammonia remediation catalysts Aug. 14, 2012
8231849 Method and system for treatment of malodorous gases emanating from a pulp mill Jul. 31, 2012
8202503 Visual, continuous and simultaneous measurement of solution ammonia and hydrogen ion concentration Jun. 19, 2012
8197753 APC process parameter estimation Jun. 12, 2012
8193114 Catalysts for dual oxidation of ammonia and carbon monoxide with low to no NO.sub.x formation Jun. 5, 2012
8192707 Selective catalytic oxidation of ammonia to water and nitrogen Jun. 5, 2012
8176654 Method and device for preventing corrosion of a gas inlet nozzle during nitric acid condensation May. 15, 2012
8178064 Treatment of power utilities exhaust May. 15, 2012
8147784 Combined waste gas treatment of waste gas streams containing ammonia and nitrogen oxides in industrial plants Apr. 3, 2012
8147785 Combustion flue gas NO.sub.x treatment Apr. 3, 2012
8101304 Process for the concentration of noble metals from fluorine-containing fuel cell components Jan. 24, 2012
8101146 Catalysts for the reduction of ammonia emission from rich-burn exhaust Jan. 24, 2012
8048390 Method for the selective catalytic reduction of nitrogen oxides in exhaust gases of vehicles Nov. 1, 2011
8043589 Process for removing carbonyl sulphide and hydrogen sulphide from a synthesis gas stream Oct. 25, 2011
8007688 Process for decontaminating syngas Aug. 30, 2011
8007735 Selective catalytic oxidation of ammonia to water and nitrogen Aug. 30, 2011
7993616 Methods and devices for reducing hazardous air pollutants Aug. 9, 2011
7951355 Process for producing a purified synthesis gas stream May. 31, 2011
7947168 Segregation of streams for the production of ammonia May. 24, 2011
7927513 Method of treating a hot syngas stream for conversion to chemical products by removing ammonia and COS Apr. 19, 2011
7907283 Method and device for determining the total oxygen content and/or the total carbon content in ammonia Mar. 15, 2011
7901647 Enhancement of conventional SCR and SNCR processes with ammonia destruction catalyst Mar. 8, 2011
7875089 Ammonia-based hydrogen generation apparatus and method for using same Jan. 25, 2011
7867300 Ammonia-based hydrogen generation apparatus and method for using same Jan. 11, 2011

1 2 3 4 5 6

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