| 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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| 06/16/1991 | CA2031730A1 Slurry supply device |
| 06/16/1991 | CA2030411A1 Compressed gas dryer with pressure retention |
| 06/15/1991 | WO1991008827A1 High-temperature three-way catalyst |
| 06/15/1991 | CA2069632A1 High-temperature three-way catalyst |
| 06/13/1991 | WO1991008275A1 Process for recovery and treatment of a diverse waste stream |
| 06/13/1991 | WO1991008274A1 Process for recovery and treatment of hazardous and non-hazardous components from a waste stream |
| 06/13/1991 | WO1991008041A1 Exhaust gas conditioning |
| 06/13/1991 | WO1991008039A1 Dual impeller method and apparatus for effecting chemical conversion |
| 06/13/1991 | WO1991008023A1 A method for the destruction of halogen-containing substances |
| 06/13/1991 | DE4102637A1 Appts. for sepn. of gas mixt. - selectively absorbs pt. of gas mixt. and releases non-absorbed gas through outlet |
| 06/13/1991 | DE3940855A1 Auto-cleaning vacuum system - comprises gas permeable membrane for cleaning effluent gases |
| 06/13/1991 | DE3939214A1 Purifying gas streams to remove acidic and organic cpds. - by spraying in lime water made from mixt. of quicklime and surfactant e.g. active carbon |
| 06/13/1991 | CA2030480A1 Chloride controls in fossil fuel fired wet scrubbing process |
| 06/12/1991 | EP0432074A1 Process and apparatus for reducing the content of acid gas pollutants in waste gases from an incineration device |
| 06/12/1991 | EP0431819A1 Method for decomposing gaseous oxide and catalyst used therefor |
| 06/12/1991 | EP0431742A2 Turbo-air freshener |
| 06/12/1991 | EP0431648A1 Pollution abatement system |
| 06/12/1991 | EP0431405A1 Device for catalytic purification of exhaust gases of internal combustion two-stroke engines |
| 06/12/1991 | EP0431351A1 Method and apparatus of removing fluorine and anorganic fluorine compounds from gases |
| 06/12/1991 | EP0430945A1 Honeycomb structure, in particular catalyst support, composed of a plurality of interlaced bundles of sheet metal. |
| 06/12/1991 | CN1052056A Condenser/membrane permeater |
| 06/12/1991 | CN1012799B Process for separating nitrogen from mixtures |
| 06/11/1991 | US5023069 Containing hydrogen sulfide and suldur dioxide with a catalyst-adsorbent |
| 06/11/1991 | US5023064 Method for removing sulfur oxide |
| 06/11/1991 | US5023063 Catalytic reduction of nitrogen and sulfur oxides |
| 06/11/1991 | US5022996 Method of separating organic contaminants from fluid feedstreams with polyphosphazene membranes |
| 06/11/1991 | US5022975 Solid state electrochemical pollution control device |
| 06/11/1991 | US5022902 Foil wrapping for protection |
| 06/11/1991 | US5022898 Exhaust filter system for sterilizers |
| 06/11/1991 | US5022896 Injecting into whirling solution radially, creating bubbles, absorption, venting |
| 06/11/1991 | CA1284802C Process of removing polluants from exhaust gases |
| 06/11/1991 | CA1284773C Gas-water separator |
| 06/09/1991 | CA2031822A1 Pollution abatement system |
| 06/09/1991 | CA2031782A1 Method of recovering and recycling solvent vapours in the cleaning of articles and apparatus useful therefore |
| 06/06/1991 | WO1991008048A1 Process for treating gases, ellipsoidal packing-material granules and their use in the process |
| 06/06/1991 | WO1991008042A1 Method and apparatus for cleaning flue gas |
| 06/06/1991 | WO1991008038A1 Method and apparatus for effecting gas-liquid contact |
| 06/06/1991 | DE4023850C1 Plant for removing harmful substances from air or gas stream - has housing contg. adsorbent through which stream passes at high rate, alternating with desorbing gas at low flow rate |
| 06/06/1991 | DE3939518A1 Gas purifying adsorber - has vertically movable adsorbent bed-retaining inner screen |
| 06/06/1991 | DE3939517A1 Gas purifying adsorber - has compressible material between adsorbent bed and support wall |
| 06/06/1991 | CA2070295A1 Method and apparatus for cleaning flue gas |
| 06/06/1991 | CA2046611A1 Process for treating gases, ellipsoidal packing material granules and their use in the process |
| 06/05/1991 | WO1991008044A1 Vibratory ion vapor generator |
| 06/05/1991 | EP0430920A1 Sulfur dioxide removal from stack gas |
| 06/05/1991 | EP0430744A1 Supported catalysts and process for producing the same |
| 06/05/1991 | EP0430437A2 Three-way catalyst for automotive emission control |
| 06/05/1991 | EP0430436A2 Three-way catalyst for automotive emission control |
| 06/05/1991 | EP0430435A2 Three-way catalyst for automotive emission control |
| 06/05/1991 | EP0430432A2 Removal of heat stable anions from alkanolamine salts |
| 06/05/1991 | EP0430331A1 Purification of air |
| 06/05/1991 | EP0430304A2 Separation of gas mixtures |
| 06/05/1991 | EP0430269A2 Exhaust gas purification system for an internal combustion engine using alcohol blended gasoline for fuel |
| 06/05/1991 | EP0430144A1 Method and apparatus for reducing the concentration of nitrogen oxides in waste gases of combustion processes |
| 06/05/1991 | EP0429942A2 Apparatus for material exchange between a current of hot gas and a liquid |
| 06/05/1991 | EP0429476A1 Polymer composition for scavenging oxygen. |
| 06/05/1991 | EP0360856A4 Process and injector for reducing the concentration of pollutants in an effluent |
| 06/05/1991 | CN1051917A Sulfonated hexafluoro bis-a -polysulfone membranes and process for fluid separation |
| 06/05/1991 | CN1051870A Dry purifying method with furnace gas |
| 06/05/1991 | CN1012727B Silica-bound calcium-containing zeolite granulate |
| 06/05/1991 | CA2029239A1 Selective adsorption of nitrogen on magnesium-containing clinoptilolites |
| 06/05/1991 | CA2004653A1 Dual impeller method and apparatus for effecting chemical conversion |
| 06/04/1991 | US5021389 Three-way catalyst for automotive emission control and method of making the catalyst |
| 06/04/1991 | US5021388 Chemical, electrochemical, or physical deposition over intermediate heat-treated silicate glass frit layer |
| 06/04/1991 | US5021383 Metals or metal oxides impregnated in alkali or alkaline earth carbonates and bicarbonates |
| 06/04/1991 | US5021232 Using Claus reaction and crystallization to separate sulfur compounds from the tail gas |
| 06/04/1991 | US5021229 Reacting adsorbent with flue gas forming chlorides to prevent it forming toxic emission |
| 06/04/1991 | US5021228 Control of sox emission |
| 06/04/1991 | US5021227 Method of removing nitrogen oxides in exhaust gases from a diesel engine |
| 06/04/1991 | US5020588 Method and apparatus for simultaneous heat and mass transfer utilizing a plurality of gas streams |
| 06/04/1991 | US5020457 Reacting combustion gases with free radicals or ions generated by stable molecules of precursor such as ammonia, methane, hydrogen, and steam |
| 06/04/1991 | US5020335 Air conditioning |
| 06/02/1991 | WO1991008040A1 Membrane process for removing water vapor from gas |
| 06/02/1991 | CA2045672A1 Membrane process for removing water vapor from gas |
| 05/31/1991 | CA2026710A1 Condenser/membrane permeater |
| 05/30/1991 | WO1991007220A1 Cold oxidation in gaseous phase |
| 05/29/1991 | EP0429427A1 Method for stabilizing solid purifying agents for noxious gases |
| 05/29/1991 | EP0429423A1 Process for the treatment of hot waste gas containing hydrogen chloride |
| 05/29/1991 | EP0429183A1 Regeneration of acidic cationic exchange resin used in the reactivation of spent alkanolamine |
| 05/29/1991 | EP0429154A1 Method for the fixation of carbon dioxide and apparatus for the treatment of carbon dioxide |
| 05/29/1991 | EP0429137A1 Process for the in-situ removal of pollutants from the soil |
| 05/29/1991 | EP0429053A1 Removal of trialkyl arsines from fluids |
| 05/29/1991 | EP0428898A1 Oxygen absorbent |
| 05/29/1991 | EP0428753A1 Exhaust gas purifying catalyst excellent in thermal resistance and method of production thereof |
| 05/29/1991 | EP0428752A1 Exhaust gas purifying catalyst excellent in thermal resistance and method of production thereof |
| 05/29/1991 | EP0428511A1 Gas separation by pressure swing adsorption |
| 05/29/1991 | DE3939281A1 Glass exchanger tubes providing effective heat transfer - to surrounding water form condensate layer to protect tube plate |
| 05/29/1991 | DE3939267A1 Distributor for reactors and reaction columns - includes distribution floor having separate distribution systems for liq. and gaseous reagents |
| 05/28/1991 | US5019546 Catalyst for purifying exhaust gas and method of manufacturing the same |
| 05/28/1991 | US5019365 Cationic polyelectrolyte |
| 05/28/1991 | US5019361 Removal and recovery of sulphur dioxide from gas streams |
| 05/28/1991 | US5019339 Control system for odor eliminating apparatus |
| 05/28/1991 | US5019143 Low pressure noncryogenic processing for ethylene recovery |
| 05/28/1991 | US5019139 For A Mass Spectrometer |
| 05/28/1991 | US5019138 Dissolving with solvent; continuous circulation |
| 05/28/1991 | CA2030682A1 Supported catalysts and manufacturing process thereof |
| 05/28/1991 | CA1284462C Method for gas separation |
| 05/26/1991 | CA2030584A1 Apparatus for mass transfer between a hot gas stream and a liquid |
| 05/23/1991 | DE4042002A1 Carbon di:oxide removal from waste gas - by chemical reaction with porous solid basic nitrite-sodalite |
| 05/23/1991 | DE4036601A1 Cleaning of flue and exhaust gases in series of chambers |
| 05/23/1991 | DE3938592A1 Redn. of ozone content of air in room to safe levels - comprises drawing air over metal-oxide catalyst or UV source |