| 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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| 10/02/1991 | EP0448750A1 Multistage dry compressing vacuum pump and method for its operation |
| 10/02/1991 | EP0448585A1 Process for the production of a catalyst for the removal of oxides of nitrogen from exhaust gases. |
| 10/02/1991 | CN1054911A Gas separating device |
| 10/01/1991 | US5053378 Multi-purpose catalysts for vehicular catalytic converters |
| 10/01/1991 | US5053210 Catalytic adsorption of sulfur compound and reduction of nitrogen oxides by adding ammonia |
| 10/01/1991 | US5053064 Air conditioning apparatus for a clean room |
| 10/01/1991 | US5053061 Gas-liquid contacting method |
| 10/01/1991 | US5053059 Air-intake system for residential furnaces |
| 10/01/1991 | US5053058 Control process and apparatus for membrane separation systems |
| 10/01/1991 | US5052188 Desiccant materials for use in gas fired cooling and dehumidification equipment |
| 10/01/1991 | CA2037523A1 Purifying fluids by adsorption |
| 10/01/1991 | CA1289895C Molecular sieve bed containers |
| 10/01/1991 | CA1289865C Gas separation process |
| 10/01/1991 | CA1289729C Treatment of gas mixtures |
| 10/01/1991 | CA1289728C Method for treating exhaust gas |
| 09/28/1991 | WO1991014649A1 Process to separate dioxygen from a gas mixture |
| 09/28/1991 | CA2056410A1 Process using transition metal complexes to separate dioxygen fro a gas mixture by electrochemical reduction of complexes |
| 09/27/1991 | CA2020502A1 Process for the in-situ production of a sorbent-oxide aerosol used for removing effluents from a gaseous combustion stream |
| 09/27/1991 | CA2020501A1 Process for the production of metal-oxide aerosols for fuel emissions control |
| 09/26/1991 | DE4108595A1 Pollution-free disposal of hospital waste - by collecting waste in filter container, steam sterilising and discharging waste and steam into incinerator |
| 09/26/1991 | DE4008818A1 Assembly on heating boiler for redn. of atmospheric effluent - contained inside the exhaust chimney, which introduces fluids to treat ascending gases |
| 09/26/1991 | DE4008789A1 Process and assembly for treatment of vehicle exhaust gases - using cold catalytic converter equipped with buffer to retain initial exhaust until hot exhaust gases pass through |
| 09/26/1991 | DE4005432A1 Thermally generated hydrogen from hydride reservoir - for redn. of metal salt or gas, esp. for purifying waste gas |
| 09/25/1991 | EP0448178A1 Method and device for processing a waste product containing a metal fraction and a combustible material fraction |
| 09/25/1991 | EP0447862A1 Method for the biological purification of gases which are contaminated with halogenated ethenes and/or with halogenated butadienes |
| 09/25/1991 | EP0447537A1 Process for reducing the emission of organic compounds produced by incomplete combustion. |
| 09/25/1991 | EP0447436A1 Device for electrostatic separation of solid particles and aerosols from gases |
| 09/25/1991 | EP0434686A4 Removal of nitric oxide from waste gases and recovery as nitric acid |
| 09/25/1991 | EP0308454B1 Device for evaporating liquids or absorbing or degassing solutions of two or more substances of inner tube/drop film design |
| 09/25/1991 | CN1014072B Process for regenerating absorbent solution streams laden with carbon dioxide and oxysulfide |
| 09/25/1991 | CN1014055B Process for removal of organochlorine compounds from the offgas from the oxidation of ethylene |
| 09/25/1991 | CN1014042B Process and composition for the removal of hydrogensulfide and/or carbon dioxide from gaseous streams |
| 09/25/1991 | CN1014033B Catalyst for purifying motor vehicle exhaust gases and process for production thereof |
| 09/24/1991 | US5051393 Oxidation catalysts for automobiles |
| 09/24/1991 | US5051392 Oxidation catalysts for converting carbon dioxide, hydrocarbons and nitrogen oxides |
| 09/24/1991 | US5051391 Catalyst filter and method for manufacturing a catalyst filter for treating a combustion exhaust gas |
| 09/24/1991 | US5051294 Catalytic converter substrate and assembly |
| 09/24/1991 | US5051245 Purification of flue gas by forming ammonium sulfate from reaction of ammonia with sulfur oxides |
| 09/24/1991 | US5051244 Use of a molecular sieve bed to minimize emissions during cold start of internal combustion engines |
| 09/24/1991 | US5051241 Microlith catalytic reaction system |
| 09/24/1991 | US5051117 Process for removing gaseous contaminating compounds from carrier gases containing halosilane compounds |
| 09/24/1991 | US5051115 Pressure swing adsorption process |
| 09/24/1991 | US5051113 Membrane of a polymer of perfluoro-2,2-dimethyl-1,3-dioxole for air intakes in engines |
| 09/24/1991 | US5050790 Process for the fabrication of metal-made carrier body for exhaust gas cleaning catalyst |
| 09/24/1991 | US5050511 Reduction of organic waste,transferring and cooling, condensation followed by recycling |
| 09/24/1991 | CA2037985A1 Economical air separator |
| 09/24/1991 | CA1289544C High strength ceramic honeycomb structure |
| 09/24/1991 | CA1289482C Reactivateable adsorption filter assembly |
| 09/24/1991 | CA1289462C Gas reacting apparatus and method |
| 09/24/1991 | CA1289459C Distributor for distributing liquid in an exchange column |
| 09/24/1991 | CA1289458C Gas cleaning apparatus having a centrifugal pre-separator and a compact reactor |
| 09/24/1991 | CA1289337C Process for removing gaseous sulfur compounds, such as sulfur dioxide, from the flue gases of a furnace |
| 09/24/1991 | CA1289336C Process for removing gaseous sulfur compounds and sulfur dioxide fromthe flue gases of a furnace |
| 09/24/1991 | CA1289335C Process and an apparatus for causing the gaseous sulfur compounds offlue gases to react to form solid compounds which can be separated from the flue gases |
| 09/20/1991 | CA2038431A1 Reduction of acidic emissions from combustion of sulfur-laden fuels |
| 09/19/1991 | WO1991013829A1 Process for reducing nitrogen oxides without generating nitrous oxide |
| 09/19/1991 | WO1991013714A1 Process for manufacturing metallic or ceramic materials |
| 09/19/1991 | WO1991013682A1 Apparatus and method for regenerating deactivated zeolite reforming catalysts |
| 09/19/1991 | WO1991013679A1 Bulk gas sorption composition and apparatus |
| 09/19/1991 | DE4033227A1 Metallic or ceramic article prodn. - by moulding or casting film-forming material contg. metals or ceramic raw materials |
| 09/19/1991 | DE4008617A1 Exhaust gas layout from e.g. boiler plant - has wet desulphurisation, heat exchangers, solids filters and heat carrier so that system prevents corrosion of pressurising fans |
| 09/19/1991 | DE4008099A1 Purificn. of effluent gas from rubbish combustion - contg. fly ash, heavy metal, acid gases etc. by spray adsorption and washing and moistening residue with used washing liq. |
| 09/19/1991 | DE4007965A1 Catalyser for continuous removal of noxious gases - for IC engines with exhaust having no catalyser, comprises multi-component catalytic mixt. coated on water cooler, heat exchanger, etc. |
| 09/19/1991 | DE4007964A1 Catalytic coating for ozone destruction - applied to surfaces near pollution source |
| 09/19/1991 | CA2081379A1 Process for reducing nitrogen oxides without generating nitrous oxide |
| 09/18/1991 | EP0447029A1 Enhanced primary component output from adsorptive separation |
| 09/18/1991 | EP0446295A1 Process and apparatus for the dry removal of polluting material from gas streams. |
| 09/18/1991 | EP0446229A1 Method and apparatus for separating non-condensable gases from vapor |
| 09/18/1991 | EP0310608B1 Process for producing an active carbon catalyst |
| 09/18/1991 | CN1013925B Process and apparatus for binding salt-forming compositions into solid when combustion of fossil fuels, garbages and like |
| 09/17/1991 | US5049365 Process for treating air containing hydrocarbon vapor with a composite adsorbent material |
| 09/17/1991 | US5049364 Methods for denitrization |
| 09/17/1991 | US5049206 Metal-made carrier body for exhaust gas cleaning catalyst and production of the carrier body |
| 09/17/1991 | US5049174 Hybrid membrane - cryogenic generation of argon concurrently with nitrogen |
| 09/17/1991 | US5048431 Method and apparatus for reducing sulfur dioxide content in flue gases |
| 09/17/1991 | US5048200 Process and apparatus for dehumidifying wet air |
| 09/17/1991 | CA1289224C Control system for air cleaner |
| 09/16/1991 | CA2031631A1 Decyanation apparatus and process for purifying water from cyanide using the same |
| 09/12/1991 | DE4029372A1 Compressor plant using very cold air - with provision of filter combination to remove ice crystals |
| 09/12/1991 | DE4007244A1 Cleaning coke oven gas by multistage method - in which hydrogen sulphide, hydrogen cyanide and ammonia are removed and no following hydrogen sulphide wash is needed |
| 09/12/1991 | DE4007166A1 Nitrogen oxide(s) removal from waste gas - contg. sulphur tri:oxide, involving alkaline earth addn. to avoid ammonium hydrogen sulphate formation |
| 09/11/1991 | EP0445816A1 Use of a zeolitic catalyst for decomposing nitrogen oxides in the absence of reducing agent |
| 09/11/1991 | EP0445776A2 Preparation of high capacity unsupported regenerable CO2 sorbent |
| 09/11/1991 | EP0445408A1 Process for the reduction of nitrogen oxides contained in waste gases |
| 09/11/1991 | EP0445175A1 A method and apparatus for drying air. |
| 09/11/1991 | EP0445163A1 High surface area cordierite catalyst support structures |
| 09/11/1991 | EP0365566B1 Process for removing oxides of nitrogen from flue gases |
| 09/11/1991 | CN1054402A Low temp. purification of gases |
| 09/11/1991 | CN1054379A Spiral-wound membrane separation device with feed and permeate/sweep fluid flow control |
| 09/11/1991 | CN1013878B Method of processing coal gas |
| 09/10/1991 | US5047381 Laminated substrate for catalytic combustor reactor bed |
| 09/10/1991 | US5047378 Exhaust gas-purifying catalyst and process for purifying exhaust gases |
| 09/10/1991 | US5047222 Process for removing sulfur from sulfur-containing gases: high calcium fly-ash |
| 09/10/1991 | US5047221 Calcium Silicates or Aluminates |
| 09/10/1991 | US5047220 Ammonia injection |
| 09/10/1991 | US5047219 Hybrid process for nitrogen oxides reduction |
| 09/10/1991 | US5047218 Sweetening of sulfur-containing gases using ozone |
| 09/10/1991 | US5047216 Apparatus for recovering elemental sulphur |
| 09/10/1991 | US5047074 From which light hydrocarbons are absorbed by passing through a column containing polyalphaolefin followed bt desorption |
| 09/10/1991 | US5047073 Gas Chromatography |