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Class Information
Number: 423/239.1
Name: Chemistry of inorganic compounds > Modifying or removing component of normally gaseous mixture > Nitrogen or nitrogenous component > Utilizing solid sorbent, catalyst, or reactant
Description: Process in which the treating material is a solid and functions to (a) modify a component, (b) attract and retain a component, or (c) react with and chemically change a component.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 5130288 |
Cogelled mixtures of hydrated zinc oxide and hydrated silica sulfur sorbents |
Jul. 14, 1992 |
| 5124303 |
Reinforced catalyst for treatment of waste gas |
Jun. 23, 1992 |
| 5120517 |
Process for the removal of sulfur oxides and nitrogen oxides from flue gas |
Jun. 9, 1992 |
| 5118481 |
Methods for reducing NO.sub.x emissions from combustion effluents |
Jun. 2, 1992 |
| 5116579 |
Removing nitrogen oxides in exhaust gases from a diesel engine |
May. 26, 1992 |
| 5112587 |
Method for the denitration of waste gases with obtention of HNO.sub.3 |
May. 12, 1992 |
| 5112790 |
Catalyst for purification of exhaust gases |
May. 12, 1992 |
| 5106602 |
Low temperature catalytic reduction of nitrogen oxides |
Apr. 21, 1992 |
| 5104629 |
Process for removing carbon-containing or nitrogen oxide-containing pollutants in flue gases |
Apr. 14, 1992 |
| 5098680 |
Aqueous ammonia injection scheme |
Mar. 24, 1992 |
| 5096680 |
Method for waste gas treatment |
Mar. 17, 1992 |
| 5087430 |
Process for purifying exhaust gas |
Feb. 11, 1992 |
| 5087431 |
Catalytic decomposition of cyanuric acid and use of product to reduce nitrogen oxide emissions |
Feb. 11, 1992 |
| 5085762 |
Catalytic cracking of hydrocarbons |
Feb. 4, 1992 |
| 5082586 |
SO.sub.x NO.sub.x pollution control composition |
Jan. 21, 1992 |
| 5078973 |
Apparatus for treating flue gas |
Jan. 7, 1992 |
| 5078982 |
Reduction of nitrogen oxide in effluent gases using formaldehyde |
Jan. 7, 1992 |
| 5071629 |
Recycling catalyst bed for flue gas treatment |
Dec. 10, 1991 |
| 5069886 |
Process and installation for the recovery of ammonia during the separation of nitrogen oxide from waste gases |
Dec. 3, 1991 |
| 5064801 |
Process for manufacturing a carbon catalyst |
Nov. 12, 1991 |
| 5058514 |
Process for controlling acid gas emissions in power plant flue gases |
Oct. 22, 1991 |
| 5055278 |
Method for decreasing nitrogen oxides (NOX) in waste furnace gases |
Oct. 8, 1991 |
| 5055279 |
Process for the reduction of emissions of sulphur dioxide and/or oxides of nitrogen in the case of combustion processes |
Oct. 8, 1991 |
| 5053210 |
Method for the purification of flue gases |
Oct. 1, 1991 |
| 5051244 |
Use of a molecular sieve bed to minimize emissions during cold start of internal combustion engines |
Sep. 24, 1991 |
| 5049364 |
Methods for denitrization |
Sep. 17, 1991 |
| 5047220 |
Catalytic denitrification control process and system for combustion flue gases |
Sep. 10, 1991 |
| 5045292 |
Process for the removal of nitric oxides from flue gases |
Sep. 3, 1991 |
| 5045516 |
Process for producing a catalyst for reducing nitrogen oxides in flue gases |
Sep. 3, 1991 |
| 5043150 |
Reducing emissions of N.sub.2 O when burning nitrogen containing fuels in fluidized bed reactors |
Aug. 27, 1991 |
| 5041271 |
Method of treating waste gas by irradiation with electron beam |
Aug. 20, 1991 |
| 5041273 |
Process for the reduction of the emission of sulphur dioxide and/or of oxides of nitrogen in combustion processes |
Aug. 20, 1991 |
| 5039644 |
Phosphate-containing ceramic structures for catalyst support and fluid filtering |
Aug. 13, 1991 |
| 5037538 |
Catalytic cracking process with isolated catalyst for conversion of NO.sub. x |
Aug. 6, 1991 |
| 5030436 |
Spent acid purification process |
Jul. 9, 1991 |
| 5023063 |
Acid rain abatement |
Jun. 11, 1991 |
| 5021144 |
Process for the reduction of NO.sub.X in an FCC regeneration system by select control of CO oxidation promoter in the regeneration zone |
Jun. 4, 1991 |
| 5021227 |
Method of removing nitrogen oxides in exhaust gases from a diesel engine |
Jun. 4, 1991 |
| 5017347 |
Process for nitrogen oxides reduction and minimization of the production of other pollutants |
May. 21, 1991 |
| 5015362 |
Catalytic conversion of NO.sub.x over carbonaceous particles |
May. 14, 1991 |
| 5009870 |
Method for removing sulphur and nitrogen compounds from gas |
Apr. 23, 1991 |
| 5004718 |
Process for calcining a denitrating catalyst |
Apr. 2, 1991 |
| 5002654 |
Reducing NO.sub.x emissions with zinc catalyst |
Mar. 26, 1991 |
| 5002741 |
Method for SO.sub.X /NO.sub.X pollution control |
Mar. 26, 1991 |
| 5000930 |
Method and installation for the purification of combustion gas from domestic heatings, combustion engines or similar heatings |
Mar. 19, 1991 |
| 4988432 |
Reducing NO.sub.x emissions with antimony additive |
Jan. 29, 1991 |
| 4986897 |
Catalytic conversion of NO.sub.x with NH.sub.3 |
Jan. 22, 1991 |
| 4983363 |
Apparatus for purifying arsine, phosphine, ammonia, and inert gases to remove Lewis acid and oxidant impurities therefrom |
Jan. 8, 1991 |
| 4981660 |
Selective hybrid NO.sub.x reduction process |
Jan. 1, 1991 |
| 4980137 |
Process for NOx and CO control |
Dec. 25, 1990 |
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