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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 |
| 4980138 |
Removal of SO.sub.x and NO.sub.x gases from flue gas by dry absorption using an absorbent |
Dec. 25, 1990 |
| 4978514 |
Combined catalytic/non-catalytic process for nitrogen oxides reduction |
Dec. 18, 1990 |
| 4977127 |
Catalyst for denitrizing nitrogen oxides contained in waste gases |
Dec. 11, 1990 |
| 4975256 |
Process using catalysts for selective catalytic reduction denox technology |
Dec. 4, 1990 |
| 4973457 |
Method for the reduction of nitrogen oxide |
Nov. 27, 1990 |
| 4964889 |
Selective adsorption on magnesium-containing clinoptilolites |
Oct. 23, 1990 |
| 4963332 |
Method for the catalytic removal of nitrogen oxides from exhaust gases by means of a reducing agent |
Oct. 16, 1990 |
| 4956057 |
Process for complete removal of nitrites and nitrates from an aqueous solution |
Sep. 11, 1990 |
| 4954324 |
Method of baghouse brown plume pollution control |
Sep. 4, 1990 |
| 4952381 |
Method for denitrizing nitrogen oxides contained in waste gas |
Aug. 28, 1990 |
| 4952548 |
Catalyst for removing nitrogen oxides |
Aug. 28, 1990 |
| 4950139 |
Process of catalytically reducing NO |
Aug. 21, 1990 |
| 4950473 |
Method for reducing nitrogen oxides in flue gas |
Aug. 21, 1990 |
| H808 |
Removal of I, Rn, Xe and Kr from off gas streams using PTFE membranes |
Aug. 7, 1990 |
| 4946661 |
Process for removing nitrogen oxides |
Aug. 7, 1990 |
| 4940567 |
Apparatus for catalytically reducing noxious substances in flue gas |
Jul. 10, 1990 |
| 4940569 |
Sorbent and processes for removing nitrogen oxides, sulfur oxides and hydrogen sulfide from gas streams |
Jul. 10, 1990 |
| 4925640 |
Method for denitration of exhaust gas containing arsenic compounds by catalysts and method |
May. 15, 1990 |
| 4921826 |
Process for producing an active carbon catalyst |
May. 1, 1990 |
| 4919905 |
Process for the systematic treatment of exhaust gases |
Apr. 24, 1990 |
| 4917873 |
Process and apparatus for cleaning hot gases |
Apr. 17, 1990 |
| 4917862 |
Filter and method for removing mercury, bacteria, pathogens and other vapors from gas |
Apr. 17, 1990 |
| 4915714 |
Fiber bed element and process for removing small particles of liquids and solids from a gas stream |
Apr. 10, 1990 |
| 4915914 |
System for simultaneously scrubbing cement kiln exhaust gas and producing useful by-products therefrom |
Apr. 10, 1990 |
| 4915920 |
Dry method of purifying flue gas |
Apr. 10, 1990 |
| 4915921 |
Method for the removal of sulfur oxide and nitrogen oxide from exhaust gases |
Apr. 10, 1990 |
| 4915922 |
Process for preparation of oxidazable oxides of nitrogen from waste gas streams |
Apr. 10, 1990 |
| 4916106 |
Supported catalyst and process for its production for the reduction of nitrogen oxides |
Apr. 10, 1990 |
| 4916107 |
Catalyst for the selective reduction of nitrogen oxides with ammonia |
Apr. 10, 1990 |
| 4912776 |
Process for removal of NO.sub.x from fluid streams |
Mar. 27, 1990 |
| 4910005 |
Process for the reduction of nitrogen oxides from exhaust gases |
Mar. 20, 1990 |
| 4910011 |
Process of purifying flue gases |
Mar. 20, 1990 |
| 4908193 |
No reduction using sublimation of cyanuric acid |
Mar. 13, 1990 |
| 4908194 |
Method for baghouse brown plume pollution control |
Mar. 13, 1990 |
| 4908195 |
Process of purifying exhaust gas |
Mar. 13, 1990 |
| 4903755 |
Apparatus for preheating combustion air, accompanied by simultaneous reduction of NO.sub.x contained in the flue gases |
Feb. 27, 1990 |
| 4892716 |
Molded catalyst and method of catalytic gas reactions using the same |
Jan. 9, 1990 |
| 4891348 |
Catalyst for removing nitrogen oxides in exhaust gases |
Jan. 2, 1990 |
| 4889698 |
Process for removal or mercury vapor and/or vapor of noxious organic compounds and/or nitrogen oxides from flue gas from an incinerator plant |
Dec. 26, 1989 |
| 4888165 |
Process for the reduction of nitrogen oxides in an effluent using a heterocyclic hydrocarbon |
Dec. 19, 1989 |
| 4886650 |
No reduction using sublimation of cyanuric acid |
Dec. 12, 1989 |
| 4883647 |
Use of manganese nodules or deep-sea ores containing manganese for the reduction of nitrogen oxides in exhaust gases |
Nov. 28, 1989 |
| 4878442 |
Nox control for high nitric oxide concentration flows through combustion-driven reduction |
Nov. 7, 1989 |
| 4879099 |
Catalyst basket for denitration for use in an exhaust gas passage |
Nov. 7, 1989 |
| 4877590 |
Process for nitrogen oxides reduction with minimization of the production of other pollutants |
Oct. 31, 1989 |
| 4877743 |
Monitoring reaction of nitrous oxide to form nitrogen |
Oct. 31, 1989 |
| 4874590 |
Catalytic reduction of nitrogen oxides |
Oct. 17, 1989 |
| 4871522 |
Combined catalytic baghouse and heat pipe air heater |
Oct. 3, 1989 |
| 4869735 |
Adsorbent for arsenic compound and method for removing arsenic compound from combustion gas |
Sep. 26, 1989 |
| 4867953 |
Method for the selective elimination of nitrogen oxides from exhaust gases |
Sep. 19, 1989 |
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