| 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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| 02/05/1991 | US4990311 Oxidative decomposition of melodorous substances with nascent oxygen from catalytic decomposition of ozone generated from irradiated air |
| 02/05/1991 | US4990168 Recycling to feed gas stream; passive process |
| 02/05/1991 | US4990167 Impingement baffles which remove water |
| 02/05/1991 | US4990165 Permeable membranes for enhanced gas separation |
| 02/05/1991 | US4989522 Separation, combustion using plasma arc |
| 02/05/1991 | CA1279861C Catalyst assembly |
| 01/30/1991 | EP0410845A1 Recovery of carbon dioxide plant vent gas using membranes |
| 01/30/1991 | EP0410793A1 Method of gas separation and membranes therefor |
| 01/30/1991 | EP0410440A1 Catalyst for purification of gases from overstoichiometric process in combustion motors and gas turbines |
| 01/30/1991 | EP0410200A1 Porous body for the treatment of gases and/or vapours and/or liquids and process for the production thereof |
| 01/30/1991 | EP0151186B1 Method and apparatus for separating mixed gas |
| 01/30/1991 | CN1048907A Hydrogen sulfide removing method |
| 01/30/1991 | CN1048812A Dry processes for treating combustion exhaust gas |
| 01/30/1991 | CN1048811A Processing for removing acid gas from gas mixture containing acid gas |
| 01/30/1991 | CN1011418B Process for cooling and cleaning producer gas and blast furnace gas and apparatus for performing this process |
| 01/29/1991 | WO1991001792A1 Process for removing or reducing the quantity of gaseous hazardous substances |
| 01/29/1991 | US4988490 Combustion of hydrocarbons to form flue gas, separation to recover nitrogen, condensation |
| 01/29/1991 | US4988488 Absorption of oxygen on alkali metal nitrates and nitrites to leave nitrogen enriched gas, releasing oxygen to regenerate al loy |
| 01/29/1991 | CA2038953A1 Process for the removal or reduction of gaseous contaminants |
| 01/29/1991 | CA1279483C Air conditioning process and apparatus |
| 01/29/1991 | CA1279482C Air conditioning process and apparatus therefor |
| 01/28/1991 | CA2021571A1 Method of gas separation and membranes therefor |
| 01/24/1991 | WO1991000773A1 Zeolite y-based catalytic composition which can be used in treating oxygenated effluent containing nitrogen oxides, its preparation and process for use |
| 01/24/1991 | WO1991000772A1 Air conditioning process and apparatus |
| 01/24/1991 | WO1991000771A1 Air conditioning process and apparatus therefor |
| 01/24/1991 | DE3923795A1 Waste incineration fly:ash treatment - e.g. for recycling to incinerator for reducing halohydrocarbon content |
| 01/23/1991 | EP0409761A1 A method of desulphurizing hot waste gas |
| 01/23/1991 | EP0409545A2 Separation of gas mixtures |
| 01/23/1991 | EP0409480A2 Method of removing hydrogen sulfide from a gas |
| 01/23/1991 | EP0409353A1 Catalyst and process for the selective oxidation of hydrogen sulphide to elemental sulphur |
| 01/23/1991 | EP0409135A1 Improved chabazite for gas separation |
| 01/23/1991 | EP0409034A1 Process for the purification of the exhaust air of chip driers and apparatus therefor |
| 01/23/1991 | EP0408979A1 Method and system for throwing carbon dioxide into the deep sea |
| 01/23/1991 | EP0408772A1 Exhaust gas cleaning method |
| 01/23/1991 | EP0408737A1 Membrane separation device and method of manufacture. |
| 01/23/1991 | EP0408700A1 Composition and method for sweetening hydrocarbons. |
| 01/23/1991 | EP0381720A4 Low pressure noncryogenic processing for ethylene recovery |
| 01/23/1991 | CN2069748U Fume-purifying device with smoke-removing and desulphurizing functions |
| 01/23/1991 | CN1048684A Improved process and system for production of dry high purity nitrogen |
| 01/23/1991 | CN1048683A Dry, high purity nitrogen production process and system |
| 01/23/1991 | CN1011291B Method of treating waste gas by irradiation with electron beam |
| 01/22/1991 | US4987112 Molybdenum silicide and palladium on alumina |
| 01/22/1991 | US4987034 High-efficiency metal-made carrier body for exhaust gas cleaning catalyst |
| 01/22/1991 | US4986966 Air pollution control apparatus for efficient removal of fly ash and sulfur dioxide |
| 01/22/1991 | US4986899 Method of adsorption |
| 01/22/1991 | US4986897 Catalytic conversion of NOx with NH3 |
| 01/22/1991 | US4986836 Filter system to remove environmentally harmful products |
| 01/22/1991 | US4986835 Process for separating and recovering carbonic acid gas from gas mixture by adsorption |
| 01/21/1991 | CA2021575A1 Polycarbonate gas separation membranes containing substituted benzenes and processes for making and using the same |
| 01/21/1991 | CA2003010A1 Composition and method for removing hydrogen sulfide from gas streams |
| 01/20/1991 | WO1991001174A1 A process for the purification of flue gases, and an apparatus for it |
| 01/20/1991 | CA2064210A1 Process for the purification of flue gases, and an apparatus for it |
| 01/20/1991 | CA2021151A1 Method of removing hydrogen sulfide from a gas |
| 01/17/1991 | DE3922910A1 Exhaust gas cleaning unit esp. for diesel engines - has filter tubes of catalytic porous sintered metal |
| 01/17/1991 | DE3922909A1 Monolithic body esp. for diesel exhaust gas treatment - consists of porous sintered metal contg. catalyst |
| 01/17/1991 | DE3922904A1 Removing carbon di:sulphide from effluent gas streams - by washing with absorption liq. comprising soln. of 1-6 carbon alkanolamine or n-alkyl alkanolamine |
| 01/16/1991 | EP0408528A1 Preparation process of an oxidation catalyst for gas decomposition |
| 01/16/1991 | EP0408319A1 Preparation of poly(phenylene oxide) asymmetric gas separation membranes |
| 01/16/1991 | EP0408100A1 Process for regenerating CO2- and H2S-containing washing solutions having a high boiling point |
| 01/16/1991 | EP0408092A1 Flue gas desulfurization process |
| 01/16/1991 | EP0408000A1 Fluid processing apparatus |
| 01/16/1991 | EP0407915A2 Catalyst for purification of exhaust gases |
| 01/16/1991 | EP0407446A1 No reduction using sublimation of cyanuric acid. |
| 01/16/1991 | EP0393029A4 Processing nitrogen-rich, hydrogen-rich, and olefin-rich gases with physical solvents |
| 01/16/1991 | EP0329690B1 Reactor with moving layer for the removal of undesirable gaseous components from gases |
| 01/16/1991 | CN1048506A Method and apparatus for treatment of waste gas containing dusts and chemical contaminants |
| 01/16/1991 | CN1011202B Composite membrane |
| 01/16/1991 | CN1011200B Technological process equipment for purifying xenon |
| 01/15/1991 | US4985387 Catalyst supports/catalysts for the treatment of vehicular exhaust gases |
| 01/15/1991 | US4985219 Removal of nitrogen oxides from waste gases |
| 01/15/1991 | US4985218 Process and injector for reducing the concentration of pollutants in an effluent |
| 01/15/1991 | US4985217 Absorption, oxidation |
| 01/15/1991 | US4985213 Exhaust gas treating apparatus |
| 01/15/1991 | US4985211 Catalyst layers of platinum group element, copper-cerium-silver catalyst to oxidize and decompose gases |
| 01/15/1991 | US4985210 Exhaust gas purifying apparatus for automobile |
| 01/15/1991 | US4985126 Apparatus and process for continuously monitoring concentrations of gaseous components in gas mixtures, with exception of O2 |
| 01/15/1991 | US4985081 Method of producing cement or concrete |
| 01/15/1991 | US4985074 Process for producing a desulfurization agent |
| 01/15/1991 | US4985052 Pressure Swing Adsorption |
| 01/15/1991 | US4984593 Method and apparatus for cleaning freight containers as well as for treating and circulating the fluids used |
| 01/15/1991 | US4984560 Low emissions wood burning stove |
| 01/15/1991 | CA1279021C Filter assembly for protecting motor vehicle occupants from pollution |
| 01/15/1991 | CA1278907C Porous cellulose ester articles having striated surfaces |
| 01/13/1991 | WO1991000770A1 Permeable porous body for treating gases and/or vapours and/or liquids and process for manufacturing it |
| 01/13/1991 | CA2036385A1 Permeable, porous body for the treatment of gases and/or vapors and/or liquids and method of producing it |
| 01/12/1991 | WO1991000708A1 An air cleaning unit |
| 01/12/1991 | CA2035897A1 Air cleaning unit |
| 01/12/1991 | CA2020597A1 Preparation of poly(phenylene oxide) asymmetric gas separation membranes |
| 01/10/1991 | WO1991000241A1 Photopromoted method for decomposing oxides of nitrogen into environmentally compatible products |
| 01/10/1991 | WO1991000134A1 Lance-type injection apparatus for introducing chemical agents into flue gases |
| 01/10/1991 | WO1990009225A3 Apparatus and process for the elimination of atmospheric pollution |
| 01/10/1991 | DE4021570A1 Heat resistant supported catalyst - esp. for cleaning automobile exhaust gases |
| 01/10/1991 | DE3922310A1 Using waste from sugar beet - by processing to desulphurise chimney gas giving prod. suitable as improver for acidified soil |
| 01/10/1991 | DE3921870A1 Spray absorber tubes in desulphurising column slope downwards - to end with drainage hole preventing residual suspension drying out |
| 01/10/1991 | DE3921572A1 Pre-desulphuriser rectification of moving combustion fumes - by ceramic honey-comb blocks completely spanning transverse support grid |
| 01/09/1991 | EP0407210A1 Method of decomposing chlorofluorocarbons |
| 01/09/1991 | EP0407180A2 Gas-liquid contacting apparatus |
| 01/09/1991 | EP0406768A2 Process for eliminating a mixture of solvents from a gas stream |
| 01/09/1991 | EP0406710A2 Process for selective absorption of chlorine and/or bromine from waste gases containing CO2 using water vapor |
| 01/09/1991 | EP0406675A1 Process for selective absorption of chlorine from waste gases containing CO2 |