| 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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| 05/03/2000 | EP0996493A1 Process and plant for the separation of nitrogen and oxygen from gases rich of nitrogen and/or oxygen |
| 05/03/2000 | EP0971785A4 Recovery of perfluorinated compounds and hydrofluorocarbon gases using molecular sieve membranes |
| 05/03/2000 | EP0758625B1 Method of recovering oxygen-rich gas |
| 05/03/2000 | EP0667007B1 System for controlling flow through a process region |
| 05/03/2000 | CN1252120A Method and device for monitoring NOx accumulator |
| 05/02/2000 | US6057488 Metal oxide adsorbent and halogens fot targets |
| 05/02/2000 | US6057263 Metallic catalyst carrier |
| 05/02/2000 | US6057259 A catalytic converter comprising a first catalyst composed of silver or silver oxide supported on a porous inorganic oxide, and a second catalyst composed of tungsten oxide and/or vanadium oxide supported on a porous inorganic oxide |
| 05/02/2000 | US6056937 Possess exceptional mechanical strength, heat resistance and hydrothermal resistance and are useful as catalysts or catalyst supports. |
| 05/02/2000 | US6056936 Catalytic desulphurization process for a gas containing H2 S and SO2 compounds and catalyst for implementing said process |
| 05/02/2000 | US6056934 Method and device for hydrogen sulfide abatement and production of sulfuric acid |
| 05/02/2000 | US6056928 Stage for absorbing the nitrogen oxides other than n2o in an absorbent or reacting the nitrogen oxides other than n2o with an absorbent, and stage for reducing n2o. |
| 05/02/2000 | US6056807 Dense mixed conducting multicomponent metallic oxide layer of the solid-state membranes for separating oxygen from an oxygen-containing gaseous mixture |
| 05/02/2000 | US6056805 Method and apparatus for the absorption of non-polar organic molecules on hydrocarbon block copolymers |
| 05/02/2000 | US6056804 High frequency rotary pressure swing adsorption apparatus |
| 05/02/2000 | US6055995 Semiconductor manufacture apparatus |
| 05/02/2000 | US6055807 Method and apparatus for reducing exhaust gas emissions |
| 05/02/2000 | CA2201090C Ceramic honeycomb catalyst having excellent thermal shock resistance |
| 05/02/2000 | CA2152743C Regenerative scrubber application with condensing heat exchanger |
| 05/02/2000 | CA2146263C Porous amorphous silica-alumina refractory oxides, their preparation and use as separation membranes |
| 05/02/2000 | CA2052044C Method for flyash recycling in a dry so2 scrubber |
| 04/27/2000 | WO2000023783A2 Contamination control system |
| 04/27/2000 | WO2000023702A1 METHOD AND DEVICE FOR DESULFURIZING A NOx ACCUMULATING CATALYST SYSTEM |
| 04/27/2000 | WO2000023695A1 Device for reducing molecular pollutants in the gases from a combustion engine |
| 04/27/2000 | WO2000023694A2 Method for reducing nitrogen oxide in the exhaust gases of an internal combustion engine operated with a lean mixture |
| 04/27/2000 | WO2000023384A1 Bottled water cooler with built-in oxygen generator and oxygen injection system |
| 04/27/2000 | WO2000023381A1 Device for purifying fluid with photonic pulses |
| 04/27/2000 | WO2000023176A1 High-temperature stabile catalysts for decomposing n2o |
| 04/27/2000 | WO2000023175A1 Process for absorbing nitrogen oxides from gas mixtures containing said oxides |
| 04/27/2000 | WO2000023174A1 Scavenger for reducing impurities in a gas and methods and apparatuses for making and using same |
| 04/27/2000 | WO2000004989A3 Method and apparatus for enhancing the rate and efficiency of gas phase reactions |
| 04/27/2000 | WO1999059705A9 Process and materials for removing pollutants |
| 04/27/2000 | DE19943814A1 Purging of NOx trap in exhaust passage of direct injection engine initiating purge portion of trap cycle when amount of NOx stored in trap exceeds a set amount by abruptly changing from lean to rich air-fuel ratio |
| 04/27/2000 | DE19940887A1 Füllkörperelement Packing element |
| 04/27/2000 | DE19849216A1 Separator for e.g. regeneration of activated carbon packing comprises two separate regions, with diffusion of preferentially-adsorbed component of gas or vapor mixture against temperature generation |
| 04/27/2000 | DE19849215A1 Acceleration of oxidation of exhaust gases, e.g. from cars and light commercial vehicles equipped with three-way catalysts, comprises use of pressed layer of porous precious metal catalyst granules and special steel wool |
| 04/27/2000 | DE19849116A1 Molecular sieve regenerated with compressor effluent heat from air separation compressor minimizes energy requirement |
| 04/27/2000 | DE19848595A1 Copper oxide alumina catalyst used for decomposition of dinitrogen monoxide has specified content of copper and optionally zinc and/or magnesium |
| 04/27/2000 | DE19848157A1 Continual dry air feed process and assembly optimizes the conversion of chicken droppings into fertiliser |
| 04/27/2000 | DE19846487A1 Measuring probe used e.g. for measuring exhaust gas from internal combustion engines has regions for determining the instantaneous concentration of oxygen, ammonia and nitrogen oxide |
| 04/27/2000 | CA2347733A1 Process for absorbing nitrogen oxides from gas mixtures containing said oxides |
| 04/26/2000 | EP0995495A1 Electrostatic control for contact between gases and solid particles |
| 04/26/2000 | EP0995480A2 Membrane air dryer with scheme to reduce air lost as sweep air |
| 04/26/2000 | EP0995479A1 Device and process for adsorption or chemisorption of gaseous components of a gas stream |
| 04/26/2000 | EP0995478A1 Process for purifying a cryogenic fluid comprising N2O, CnHm and/or NOx as impurities |
| 04/26/2000 | EP0995477A1 Process for purifying a gas stream containing N2O as an impurity |
| 04/26/2000 | EP0995017A1 Tank for a vehicle with a reduction-agent-operated exhaust fume purification system |
| 04/26/2000 | EP0994749A1 Method for treating gases to reduce nitrogen oxide emissions using a catalytic composition based on silica and titanium oxide |
| 04/26/2000 | EP0914686B1 Method and apparatus for desulfurizing fuel gas |
| 04/26/2000 | CN2375370Y Smoke desulfurizing dust remover |
| 04/26/2000 | CN2375369Y Exhaust gas absorber |
| 04/26/2000 | CN1251322A Industrial organic waste-gas purification catalyst and preparation method thereof |
| 04/26/2000 | CN1251318A Method for making ceramic coating |
| 04/26/2000 | CN1251316A Process of partially selective reducting of NO for hydrogen under oxygen-enrciched condition |
| 04/26/2000 | CN1251315A Pressure-variable adsorption gas separating method |
| 04/26/2000 | CN1051837C Process for destroying toxic substances occuring during elimination of organic refuse |
| 04/25/2000 | US6054408 Mixed oxide catalyst |
| 04/25/2000 | US6054104 Method and apparatus for germanium reclamation from chemical vapor deposition |
| 04/25/2000 | US6054102 Ozone producing apparatus utilizing feedback control from ozone density measurement |
| 04/25/2000 | US6054025 Multilayer elements in stacks |
| 04/25/2000 | US6053966 Gas separators with cations |
| 04/25/2000 | US6053965 Fuel gas conditioning process |
| 04/25/2000 | US6053154 Exhaust gas recycling arrangement with individual cylinder throttling |
| 04/25/2000 | US6052989 Emission control system for internal combustion engines |
| 04/25/2000 | CA2175290C Method for collecting volatile organic substances |
| 04/25/2000 | CA2175289C Method for collecting volatile organic substances |
| 04/25/2000 | CA2171142C Planar solid-state membrane module |
| 04/25/2000 | CA2150296C Highly reducible alumina, cerium oxide and zirconium oxide compounds; process for preparing the same and their use for producing catalysts |
| 04/25/2000 | CA2033215C Purification of sulphide-containing gases |
| 04/22/2000 | CA2287039A1 Pressure swing adsorption method for production of an oxygen-enriched gas |
| 04/20/2000 | WO2000022690A1 Fuel processing system |
| 04/20/2000 | WO2000022285A1 Insulative shield, particularly for automotive exhaust components |
| 04/20/2000 | WO2000021881A1 REDUCING NOx EMISSIONS FROM AN ENGINE BY TEMPERATURE-CONTROLLED UREA INJECTION FOR SELECTIVE CATALYTIC REDUCTION |
| 04/20/2000 | WO2000021647A1 Process and apparatus for treating combustion exhaust gas |
| 04/20/2000 | WO2000021646A1 System and method for purifying exhaust gases |
| 04/20/2000 | WO2000021645A1 Filter for separating nitrogen oxides and particles from a gas flow |
| 04/20/2000 | WO2000021644A2 Absorbent mass for phosphine |
| 04/20/2000 | WO2000003804A3 Method for regenerating a deactivated catalyst |
| 04/20/2000 | DE19856366C1 Urea injection system treating exhaust gases from lean burn engine, comprises air-cooling jacket surrounding injector valve to keep it cool, so that a petrol injection valve may be used |
| 04/20/2000 | DE19847940A1 Treatment of water containing magnesium sulfate, especially from a flue gas desulfurization unit, comprises precipitating calcium sulfate with calcium chloride recycled from magnesium hydroxide precipitation |
| 04/20/2000 | DE19847875A1 De-sulfation of nitrogen oxide storage catalyst following lean-burn common-rail engine comprises checking for exhaustion of capacity and reliability-critical component defects, before initiation |
| 04/20/2000 | DE19847874A1 Use of on-board diagnosis apparatus for monitoring nitrogen oxide absorption catalyst regeneration, includes examination of reliability-critical components on detection of anomalies |
| 04/20/2000 | DE19847697A1 Membrane hollow lumen pressurized air drying process comprises conveying permeate from lumen of dryer, feeding air and retentate into framed stack and circulating around membrane fiber |
| 04/20/2000 | DE19847597A1 Membrane hollow lumen pressurized air drying process comprises conveying permeate from lumen of dryer, feeding air and retentate into framed stack and circulating around membrane fiber |
| 04/20/2000 | DE19847008A1 Stickoxid-Speicherkatalysator Nitrogen oxide storage catalyst |
| 04/20/2000 | DE19846284A1 Removal of phosphine from gas following fumigation comprises passing gas through sulfur-containing activated charcoal |
| 04/20/2000 | DE19845526A1 Filtermaterial für fluide Medien sowie Verfahren und Vorrichtung zur Herstellung eines solchen Filtermaterials Filter material for fluid media as well as methods and apparatus for making such a filter material |
| 04/20/2000 | DE19845274A1 Entfernung von CO¶2¶ und H¶2¶S aus dem Rohgas der Dampfcrackung Distance from CO¶2¶ and H¶2¶S from the raw gas steam cracking |
| 04/20/2000 | DE19842391A1 Catalytic denitrification of flue gases using ammonia comprises differential measurement of carbon monoxide at catalyst inlet and outlet |
| 04/20/2000 | CA2346885A1 Insulative shield, particularly for automotive exhaust components |
| 04/19/2000 | EP0994346A2 Sensor for the detection of actual concentrations of several gas compounds in a gas |
| 04/19/2000 | EP0994243A2 Exhaust gas purifying device |
| 04/19/2000 | EP0993861A1 Catalyst for purifying exhaust gas from lean-burn engine |
| 04/19/2000 | EP0993860A1 Nitrogen-oxide-storage catalytic converter and process for its manufacture |
| 04/19/2000 | EP0993859A1 Three-dimensional, photocatalytic filter apparatus |
| 04/19/2000 | EP0993858A1 Process for reducing nitrogen oxide emissions in medium with excess of oxidants |
| 04/19/2000 | EP0993857A1 Method for the catalytic oxidation of VOC/CO in the presence of organosilicate compounds |
| 04/19/2000 | EP0993856A2 Gas separator |
| 04/19/2000 | EP0993332A1 Process for generating power including a combustion process |
| 04/19/2000 | EP0824377B1 Air purifier |