| 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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| 07/09/1991 | US5030422 Laser breakdown of particles |
| 07/09/1991 | US5030320 Spraying water to react by-product; air pollution control |
| 07/09/1991 | US5030262 Air vapor trap and drain therefore |
| 07/09/1991 | US5030251 System and method for separating a portion of a gas from a mixture of gases |
| 07/09/1991 | US5029535 Control of addition of conditioning agents to flue gas |
| 07/09/1991 | CA2033751A1 Apparatus and process for the prevention of acid gas excursions |
| 07/09/1991 | CA2032967A1 Oxidation catalyst with modified platinum structure |
| 07/09/1991 | CA2032958A1 Reduction catalyst with modified rhodium structure |
| 07/09/1991 | CA1285890C Double-ended hollow fiber permeator |
| 07/09/1991 | CA1285885C Catalytic converter with multiple removable catalyst panels |
| 07/09/1991 | CA1285884C Wound metallic exhaust gas catalyst carrier body having a geometrically complex cross-sectional shape, and method, apparatus and blank for producing the body |
| 07/04/1991 | DE4042079A1 Automobile exhaust gas cleaning catalyst - having palladium-rich region in catalyst layer near gas inlet end |
| 07/04/1991 | DE3943191A1 Waste gas cleaning - using in situ electrochemically produced peroxide(s) and hydrogen for removing oxide(s), of sulphur and nitrogen |
| 07/03/1991 | EP0435848A1 Method of hindering the production of dioxins and furans |
| 07/03/1991 | EP0435412A2 Denitration catalyst for high-temperature exhaust gas |
| 07/03/1991 | EP0435361A1 Method of reducing nitrogen oxides and sulfur compounds in exhaust gases |
| 07/03/1991 | EP0435210A2 Method for the preparation of methyl chloride |
| 07/03/1991 | EP0435156A2 Vapor phase adsorption process using sequential adsorption zones containing different particle size adsorbents |
| 07/03/1991 | EP0434955A1 Method and apparatus for purifying exhaust gases containing alkylene oxid |
| 07/03/1991 | EP0434686A1 Removal of nitric oxide from waste gases and recovery as nitric acid. |
| 07/03/1991 | EP0414817A4 Process for nitrogen oxides reduction with minimization of the production of other pollutants |
| 07/02/1991 | US5028575 Silation of surface hydroxyl groups with alkylhalosilane |
| 07/02/1991 | US5028404 Metal oxide catalysts |
| 07/02/1991 | US5028335 Crystal structure, ultrafiltration, biochemical immobilization, from Bacillus cells |
| 07/02/1991 | US5028310 Reduction of SOx in regenerator off gas of a fluid cracking unit |
| 07/02/1991 | US5028272 Treatment Of Contaminated Particles With Calcium Oxide, Calcium Hydroxide Or Calcium Fluoride |
| 07/02/1991 | US5027723 Method and apparatus for reducing sulfur dioxide content in flue gases |
| 07/02/1991 | US5027642 Method of detecting and or removing trace amounts of condensible vapors from compressed gas |
| 07/02/1991 | US5027529 Charge/purge control system for air dryer having limited charge time |
| 07/02/1991 | CA1285546C Catalyst for the reduction of oxides of nitrogen |
| 07/02/1991 | CA1285356C Multilayer composite hollow fibers and method of making same |
| 06/29/1991 | CA2033117A1 Control of catalytic reaction and devices therefor |
| 06/28/1991 | CA2033241A1 Method for purification of exhaust gas and apparatus therefor |
| 06/28/1991 | CA2032613A1 Vapor phase adsorption process using sequential adsorption zones containing different particle size adsorbents |
| 06/27/1991 | WO1991008826A1 A method for drying of gases, especially compressed air, a membrane for carrying out said method and a process for the manufacturing of said membrane |
| 06/27/1991 | WO1991008825A1 Device for continuously cleansing the exhaust gases of a vacuum installation |
| 06/27/1991 | DE3942188A1 Radioactive gas scrubbing process - removes unwanted radioactive ingredients by rotating active carbon filter, recycling part of scrubbed gas |
| 06/27/1991 | DE3942187A1 Toxic gas scrubbing process - removes unwanted toxic ingredients by rotating active carbon filter, recycling part of scrubbed gas |
| 06/27/1991 | DE3941713A1 Compressed air cool-drying - uses auxiliary heat exchanger transferring heat from incoming feed gas to emerging dried gas |
| 06/26/1991 | EP0434562A1 Process and apparatus for removing carbon monoxide from gaseous mixture containing hydrogen |
| 06/26/1991 | EP0434510A1 Arrangement for mass distribution and heat and mass transfer for a column, especially with packings and column with such an arrangement |
| 06/26/1991 | EP0434219A1 Hollow fiber bundle element |
| 06/26/1991 | EP0434063A1 Method of purifying oxygen-excess exhaust gas |
| 06/26/1991 | EP0434019A2 Process for removing sulfur dioxide from flue gases |
| 06/26/1991 | EP0433936A2 A valve and membrane device |
| 06/26/1991 | EP0433582A1 Preparation of ceramic honeycomb structure having selectively sealed channels |
| 06/26/1991 | EP0433564A1 Improved process for odor control |
| 06/26/1991 | EP0433324A1 Process for recovering nitrogen from gaseous mixtures containing oxygen and nitrogen by alternating pressure adsorption on carbon molecular sieves. |
| 06/26/1991 | EP0433303A1 Multi-stage process for reducing the concentration of pollutants in an effluent using an ammonium salt. |
| 06/26/1991 | EP0354912B1 Process for manufacturing a carbon catalyst |
| 06/26/1991 | CN1012943B Process for eliminating organic odors |
| 06/25/1991 | US5026611 Metal-made carrier body for exhaust gas cleaning catalyst and production of the carrier body |
| 06/25/1991 | US5026528 Moveable bed of metal oxide reacts to form metal sulfide which is oxidized to reuseable metal oxide; process control of oxygen concentration and heat of exothermic reaction |
| 06/25/1991 | US5026503 Composition and method for removing hydrogen sulfide from gas streams |
| 06/25/1991 | US5026479 Fluid separation device |
| 06/25/1991 | US5026406 Adsorptive process for producing two gas streams from a gas mixture |
| 06/25/1991 | US5026275 Air polution control |
| 06/25/1991 | CA1285209C Process for the production of argon |
| 06/25/1991 | CA1285181C Nitrogen oxide reduction in furnaces |
| 06/24/1991 | WO1991009669A1 Composite diaphragm, process for producing it and its use |
| 06/24/1991 | CA2072016A1 Composite diaphragm, process for producing it and its use |
| 06/23/1991 | WO1991009665A1 Method and apparatus for treating exhaust gas by multi-stage irradiation with electron beam |
| 06/23/1991 | WO1991009664A1 Process and apparatus for removal of impurities from flue gases |
| 06/23/1991 | CA2071891A1 Process and apparatus for removal of impurities from flue gases |
| 06/23/1991 | CA2032946A1 Valve and membrane device |
| 06/23/1991 | CA2032916A1 Dynamic membrane separation process for improved selectivity |
| 06/23/1991 | CA2032573A1 Flue gas desulfurization process |
| 06/21/1991 | CA2029503A1 Process of decreasing the no content of exhaust gases |
| 06/20/1991 | DE3941894A1 Organic fume pollutants collection - by washing gas from refuse incinerators then removing pollutants by using adsorbent e.g. active coke |
| 06/20/1991 | DE3941592A1 Sodium sulphate sepn. from spent flue gas desulphurisation soln. - by modifying evapn. and crystallisation to minimise chemical and energy consumption |
| 06/20/1991 | DE3941431A1 Procedure and plant for disposal of refuse dump gas and seepage water - gas is burnt and seepage water cleaned by reverse osmosis |
| 06/20/1991 | DE3940520A1 Process for the selective enrichment - of transient materials within a fluid mixt. |
| 06/19/1991 | EP0432964A1 Vapor recovery system |
| 06/19/1991 | EP0432778A2 Slurry supply device |
| 06/19/1991 | EP0432538A1 Hydrodynamic fume scrubber |
| 06/19/1991 | EP0432534A1 Catalyst for cleaning exhaust gases from Diesel engines |
| 06/19/1991 | EP0432483A1 Catalytic converter arrangement for purification of exhaust gases |
| 06/19/1991 | EP0432396A1 Condenser/membrane permeater |
| 06/19/1991 | EP0432166A1 Lance-type injection apparatus for introducing chemical agents into flue gases |
| 06/19/1991 | EP0207100B1 Process for changing the effective pore size of a structure |
| 06/19/1991 | CN2079081U Air filtering blanket |
| 06/19/1991 | CN1052355A Arrangement for catalytic purification of exhaust gases of internal combustion engines, in particular two-stroke engines |
| 06/19/1991 | CN1052262A Process for purification of exhaust gas of diesel engines |
| 06/19/1991 | CN1052261A Method and apparatus for cleaning flue gas |
| 06/19/1991 | CN1052260A Desulphurization method for smoke or tail gas containing sulphur |
| 06/19/1991 | CN1012879B Improved composite separation membranes and preparation and use thereof |
| 06/18/1991 | US5024985 Support material for three-way catalysts containing platinum group metal and having reduced tendency for H2 S emission |
| 06/18/1991 | US5024981 Staged metal-promoted zeolite catalysts and method for catalytic reduction of nitrogen oxides using the same |
| 06/18/1991 | US5024824 Layered automotive catalytic composite |
| 06/18/1991 | US5024823 Copper sulfate absorption mass to remove AsH3, PH3, B2 H.sub.4 and SiH4 |
| 06/18/1991 | US5024684 Mixing enhancement to prevent sticking |
| 06/18/1991 | US5024683 Sorption of trialkyl arsines |
| 06/18/1991 | US5024682 Caustic-impregnated activated carbons for removal of hydrogen sulfide |
| 06/18/1991 | US5024171 Reduction of acidic emissions from combustion of sulfur-laden fuels |
| 06/18/1991 | US5024062 Multistage isothermal air dehumidification |
| 06/18/1991 | CA1284983C Non-noble metal combustion catalyst and process for its preparation |
| 06/18/1991 | CA1284980C Mercury adsorbent carbon molecular sieves |
| 06/17/1991 | WO1991008824A1 Method of concentrating chlorine gas |
| 06/17/1991 | CA2046325A1 Concentration process of gaseous chlorine |
| 06/16/1991 | WO1991008823A1 Process for obtaining nitrogen from air or nitrogen-containing gases by pressure exchange adsorption on carbon molecular sieves |