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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 |
| 4867954 |
Catalytic reduction of nitrogen oxides |
Sep. 19, 1989 |
| 4868144 |
Process to reduce NO.sub.x emissions from a fluid catalytic cracking unit |
Sep. 19, 1989 |
| 4865827 |
Process for removing nitrogen oxides |
Sep. 12, 1989 |
| 4861567 |
Methods of reducing NO.sub.x and SO.sub.x emissions from combustion systems |
Aug. 29, 1989 |
| 4859438 |
Method for separation of impurities from flowing gas |
Aug. 22, 1989 |
| 4859439 |
Catalyst and a method for denitrizing nitrogen oxides contained in waste gases |
Aug. 22, 1989 |
| 4855115 |
Process for removing nitrogen oxides from exhaust gases |
Aug. 8, 1989 |
| 4855116 |
Activated coke method of removing nitrogen oxides from exhaust gases |
Aug. 8, 1989 |
| 4855276 |
Solid filtration medium incorporating alumina and carbon |
Aug. 8, 1989 |
| 4853194 |
Method for treating exhaust gas |
Aug. 1, 1989 |
| 4851201 |
Methods of removing NO.sub.x and SO.sub.x emissions from combustion systems using nitrogenous compounds |
Jul. 25, 1989 |
| 4851202 |
Process for the simultaneous removal of nitrogen oxides and sulfur dioxide from an oxygen-containing exhaust gas |
Jul. 25, 1989 |
| 4849192 |
Methods for preventing formation of sulfuric acid and related products in combustion effluents |
Jul. 18, 1989 |
| 4847054 |
Process for catalytically reducing NO contained in a gas |
Jul. 11, 1989 |
| 4843980 |
Composition for use in reducing air contaminants from combustion effluents |
Jul. 4, 1989 |
| 4844915 |
Method for ESP brown plume control |
Jul. 4, 1989 |
| 4842834 |
Process for reducing the concentration of pollutants in an effluent |
Jun. 27, 1989 |
| 4840913 |
Oxides of nitrogen detector |
Jun. 20, 1989 |
| 4839147 |
Method of purifying combustion product gases contaminated with dust and noxious gases |
Jun. 13, 1989 |
| 4839148 |
Method of removing SO.sub.x and NO.sub.x from effluent gas |
Jun. 13, 1989 |
| 4834962 |
Process and apparatus for the catalytic reaction of gases |
May. 30, 1989 |
| 4833113 |
Denitration catalyst for reducing nitrogen oxides in exhaust gas |
May. 23, 1989 |
| 4830839 |
Ammonia scrubbing |
May. 16, 1989 |
| 4830840 |
Process for removing sulfur oxide and nitrogen oxide |
May. 16, 1989 |
| 4831011 |
Carbon-based adsorbent and process for production thereof |
May. 16, 1989 |
| 4828680 |
Catalytic cracking of hydrocarbons |
May. 9, 1989 |
| 4828806 |
Process for cleaning an exhaust gas |
May. 9, 1989 |
| 4829036 |
Regeneration process for spent SO.sub.2 -NO.sub.X sorbents |
May. 9, 1989 |
| 4824360 |
Method for decreasing emissions of nitrogen oxides and sulfur oxides when burning fuels which contain nitrogen and sulfur |
Apr. 25, 1989 |
| 4824647 |
Method of removing acid gas pollutants from flue gases |
Apr. 25, 1989 |
| 4812296 |
Process utilizing catalytic material for the reduction of nitrous oxides |
Mar. 14, 1989 |
| 4812429 |
Method for cleaning waste gas denitrating catalyst |
Mar. 14, 1989 |
| 4810476 |
Process and apparatus for catalytically reducing noxious substances in flue gas |
Mar. 7, 1989 |
| 4806319 |
Reduction of sulfur and nitrogen oxides using petroleum pitches |
Feb. 21, 1989 |
| 4806320 |
Process for Nox control |
Feb. 21, 1989 |
| 4798711 |
Processes for removing nitrogen oxides, sulfur oxides and hydrogen sulfide from gas streams |
Jan. 17, 1989 |
| 4798817 |
Selective catalytic reduction catalyst consisting of iron sulfate, ceria and alumina |
Jan. 17, 1989 |
| 4793980 |
Hollow porous microspheres as substrates and containers for catalyst |
Dec. 27, 1988 |
| 4793981 |
Integrated injection and bag filter house system for SO.sub.x -NO.sub.x -particulate control with reagent/catalyst regeneration |
Dec. 27, 1988 |
| 4792439 |
Process for decreasing the content of nitrogen oxides in flue gases |
Dec. 20, 1988 |
| 4790982 |
Metal-containing spinel composition and process of using same |
Dec. 13, 1988 |
| 4789531 |
Method of removing nitrogen oxides (NO.sub.x) from gases, especially flue gases |
Dec. 6, 1988 |
| 4789533 |
Catalyst for reductive conversion of nitrogen oxides in waste gases |
Dec. 6, 1988 |
| 4786484 |
Process for absorbing toxic gas |
Nov. 22, 1988 |
| 4783325 |
Process and apparatus for removing oxides of nitrogen and sulfur from combustion gases |
Nov. 8, 1988 |
| 4781902 |
Process for the removal of nitrogen oxides and sulphur oxides from flue gases |
Nov. 1, 1988 |
| 4782039 |
Selective catalytic reduction catalyst and a process for preparing the catalyst |
Nov. 1, 1988 |
| 4780289 |
Process for nitrogen oxides reduction and minimization of the production of other pollutants |
Oct. 25, 1988 |
| 4780290 |
Method for purifying flue gas |
Oct. 25, 1988 |
| 4778664 |
Process for the removal of NO from fluid streams using a water soluble polymeric chelate of a polyvalent metal |
Oct. 18, 1988 |
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