| Patents for B01D 53 - Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols (135,933) |
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| 01/03/1990 | EP0348768A2 Process for eliminating nitrogen oxides from combustion exhaust gases |
| 01/03/1990 | EP0348576A2 Catalyst carriers and a process for producing the same |
| 01/03/1990 | EP0348575A2 Catalyst carriers and a process for producing the same |
| 01/03/1990 | EP0348466A1 Catalyst and process for producing it |
| 01/03/1990 | EP0348459A1 Improved composite membranes, their manufacture and their use |
| 01/03/1990 | EP0239603B1 Method and device for the selective removal of h 2?s from an h 2?s-containing gas |
| 01/03/1990 | EP0215014B1 Method for producing a catalyst |
| 01/03/1990 | CN2050427U Aluminum alloy double drum nitrogen desiccator refining installalion |
| 01/02/1990 | US4891348 Catalyst for removing nitrogen oxides in exhaust gases |
| 01/02/1990 | US4891257 Carrier matrix, particularly for a catalytic reactor for the exhaust emission control in the case of internal-combustion engines |
| 01/02/1990 | US4891205 Stabilized chelating agents for removing hydrogen sulfide |
| 01/02/1990 | US4891195 Synergistic effect of oil-soluble surfactants and dibasic carboxylic acids on SO2 removal enhancement in flue gas desulfurization process |
| 01/02/1990 | US4891194 Method for scrubbing flue gases from a firing unit |
| 01/02/1990 | US4891192 Process for the purification of traces of radioactive elements generated during the storage of uranium resulting from the reprocessing of irradiated nuclear fuels |
| 01/02/1990 | US4891139 Method for wet oxidation treatment |
| 01/02/1990 | US4891051 System for decontaminating compressed gas |
| 01/02/1990 | US4890581 Method and plant for purifying the exhaust air from a tenterframe or a singer |
| 12/28/1989 | WO1989012794A1 Low pressure noncryogenic processing for ethylene recovery |
| 12/28/1989 | WO1989012601A1 Process for nitrogen oxides reduction with minimization of the production of other pollutants |
| 12/28/1989 | WO1989012600A1 Multi-stage process for reducing the concentration of pollutants in an effluent using an ammonium salt |
| 12/28/1989 | WO1989012501A1 Process for manufacturing a microporous catalyst, catalyst obtained for the depollution of exhaust gases, and catalytic chamber provided with such a catalyst |
| 12/28/1989 | WO1989012495A1 Process for removing hydrosulphide from coke oven gas |
| 12/28/1989 | DE3920146A1 Process and apparatus for ashing and desulphurising gaseous unburnt gases and exhaust streams containing SO2, SO3 and/or H2S in a circulating bed |
| 12/28/1989 | DE3906314A1 Verfahren zur raffinierung von wasserstoffgas Process for refining of hydrogen gas |
| 12/28/1989 | DE3821126A1 Exhaust gas purification process and apparatus for carrying this out |
| 12/28/1989 | DE3821117A1 Verfahren zur entfernung von schwefelwasserstoff aus koksofengas A process for the removal of hydrogen sulfide from coke oven gas |
| 12/28/1989 | DE3820981A1 Exhaust gas purification apparatus having a tightly enclosed bearing and insulation mat |
| 12/27/1989 | EP0348263A1 New catalyst useful in selective nitrogen oxides reduction process |
| 12/27/1989 | EP0348251A1 Liquid absorbant of acid gases containing a tertiary alcanolamin compound and an absorption activator for CO2 and its use for the deacidification of CO2 and possibly other acid gases |
| 12/27/1989 | EP0347797A1 Process for reducing NOx in exhaust gases from furnaces, and furnace with means for reducing the NOx content in exhaust gases |
| 12/27/1989 | EP0347753A1 Process for purifying waste gazes from CVD-processes |
| 12/27/1989 | EP0268655B1 Method and apparatus for the cleaning of flue gas and the recovery of heat from same |
| 12/27/1989 | CN1006200B Prepn. of high surface area agglomerates for catalyst support and preparation of monolithic support structures containing them |
| 12/26/1989 | US4889701 Process for oxidizing multivalent metals |
| 12/26/1989 | US4889700 Process and device for selective extraction of H2 S from an H2 S-containing gas |
| 12/26/1989 | US4889698 Process for removal or mercury vapor and/or vapor of noxious organic compounds and/or nitrogen oxides from flue gas from an incinerator plant |
| 12/26/1989 | US4889541 Separation of gases |
| 12/21/1989 | DE3918212A1 Process and apparatus for recovery of nitrogen oxides from industrial plants |
| 12/21/1989 | DE3820708A1 Dessicant box |
| 12/21/1989 | DE3820512A1 Method for the catalytic treatment of a flue gas stream and catalyst |
| 12/21/1989 | DE3820434A1 Absorption column and process for stripping out impurities from a gas |
| 12/20/1989 | EP0347407A1 Device for removal of pollutants or odours from gases by biological filtration |
| 12/20/1989 | EP0346893A1 Apparatus for purifying exhaust gases emitted in CVD processes |
| 12/20/1989 | EP0346739A2 Method for separating a liquid component from a solution containing two or more liquid components |
| 12/20/1989 | EP0346649A1 Adsorption apparatus for the purification of exhaust gases |
| 12/20/1989 | EP0346566A2 Oxygen enriching apparatus |
| 12/20/1989 | EP0346379A1 Method for recovering volatile compounds from atmosphere |
| 12/20/1989 | CN1038032A Catalyst for purifying exhaust gas and method for production thereof |
| 12/20/1989 | CN1038031A Method for preventing fouling in water circulation system |
| 12/19/1989 | US4888320 Catalyst and method of making the catalyst |
| 12/19/1989 | US4888317 Catalyst-agglomerate bodies encapsulated in a structure and method for their production |
| 12/19/1989 | US4888165 Process for the reduction of nitrogen oxides in an effluent using a heterocyclic hydrocarbon |
| 12/19/1989 | US4888158 Separating unevaporated drops from hot flue gas stream using modified electrostatic precipitator; removal of sulfur oxides and particles; pollution control |
| 12/19/1989 | US4888157 Sulphur compounds removal |
| 12/19/1989 | CA1263908A1 Method of removing sulphur dioxide from a gaseous stream |
| 12/18/1989 | EP0304478A4 Process for nitrogen oxides reduction with minimization of the production of other pollutants. |
| 12/14/1989 | WO1989012025A1 Condensing sulfuric acid vapours to produce sulfuric acid |
| 12/14/1989 | WO1989012024A1 Sulfuric acid process and apparatus |
| 12/14/1989 | WO1989011906A1 A layered automotive catalytic composite |
| 12/14/1989 | WO1989011905A1 Dry exhaust gas conditioning |
| 12/14/1989 | WO1989011904A1 Process and installation for dry separation of noxious substances from flue gases |
| 12/14/1989 | DE3918317A1 Exhaust gas purification catalyst |
| 12/14/1989 | DE3917389A1 Process for continuous solvent recovery |
| 12/14/1989 | DE3916705A1 Process for recovering heat from flue gases |
| 12/14/1989 | DE3818919A1 Process and apparatus for the selective removal of at least one constituent from the gas mixture |
| 12/14/1989 | DE3818630A1 Verfahren zur trockenabscheidung von schadstoffen aus rauchgasen und anlage zur durchfuehrung des verfahrens Flue gases process for dry deposition of pollutants and system for implementing the method |
| 12/13/1989 | EP0345862A2 Process for the removal of hydrogen sulfide from a gas mixture by active carbon |
| 12/13/1989 | EP0345695A2 Catalysts for selective catalytic reduction denox technology |
| 12/13/1989 | EP0345686A2 Pressure swing adsorption apparatus and process for recovery of oil-soluble vapors |
| 12/13/1989 | EP0345632A1 Method and apparatus for purifying exhaust gases containing sulfur dioxide |
| 12/13/1989 | EP0345520A1 Apparatus for cleaning gases, especially smoke, using a layer of bulk material. |
| 12/13/1989 | CN1037845A Shaft with moving bed of loose materials |
| 12/13/1989 | CN1006041B Removing of co2 by potassium carbonate solution with complex catalysts |
| 12/12/1989 | US4886769 Active gas adsorbing element and method of manufacturing |
| 12/12/1989 | US4886650 Decomposition, oxidation, reduction, free radical generation |
| 12/12/1989 | US4886649 Method for the purification of hydrogen sulfide-containing gases |
| 12/12/1989 | US4886604 Structure with membranes having continuous pores |
| 12/12/1989 | US4886524 Spraying liquid into exhaust gas, passing into dust collector with vacant first chamber; reduced flue length |
| 12/12/1989 | US4886523 Expansion to high subsonic velocity, recompression by deceleration, inertial separation of particles |
| 12/12/1989 | US4886444 Process for treating gaseous effluents coming from the manufacture of electronic components and incineration apparatus for carrying out said process |
| 12/12/1989 | EP0313648A4 Process for nitrogen oxides reduction and minimization of the production of other pollutants. |
| 12/07/1989 | DE3830390C1 Regenerative SO2 flue gas purification |
| 12/06/1989 | EP0344917A1 Apparatus for the separation of gas mixtures |
| 12/06/1989 | EP0344351A1 Gas-refrigerant heat exchanger, especially for compressed-air dryers |
| 12/06/1989 | EP0344306A1 Catalyst and process for producing it |
| 12/06/1989 | EP0344283A1 Scrubber. |
| 12/06/1989 | EP0344269A1 Process for the reduction of nitrogen oxides in an effluent |
| 12/05/1989 | US4885146 Process for scrubbing of NO and/or SO2 from gas mixtures |
| 12/05/1989 | US4885142 Apparatus in the form of a disk for the separation of oxygen from other gases and/or for the pumping of oxygen and the method of removing the oxygen |
| 12/05/1989 | US4885139 Spraying neutralizing solution to form salt; multistage, multizonal; air pollution control |
| 12/05/1989 | US4884396 Desulfurizing agent and process for treating hydrogen sulfide containing gas, coal gasification system and power generation system based on coal gasification using the desulfurizing agent |
| 12/05/1989 | CA1263518A1 Use of waste solids from fluidized bed combustion processes for additional flue gas desulfurization |
| 12/05/1989 | CA1263517A1 Method for recovering elemental sulfur from coal-gas |
| 11/30/1989 | WO1989011329A1 Agent and process for cleaning gases and exhaust gases and process for producing said agent |
| 11/30/1989 | WO1989011328A1 Membrane element and membrane apparatus for extracting super-pure hydrogen from gaseous hydrogen-containing mixtures |
| 11/30/1989 | WO1989011327A1 Liquid absorbing acid gases |
| 11/30/1989 | WO1989011326A1 Process and device for removal of h2s |
| 11/30/1989 | DE3915934A1 Medium and process for purifying gases and exhaust gases and a process for the preparation of this medium |
| 11/30/1989 | DE3905133A1 Process for removing readily volatile constituents from soils |
| 11/30/1989 | DE3820826C1 Apparatus for receiving flowable bulk material through which flows a gas stream |