| 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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| 06/01/1994 | EP0599379A2 Improved catalyst for treatment of diesel exhaust |
| 06/01/1994 | EP0599271A1 Process for removing and destroying low concentrations of oxidizable organic contaminants from a gas stream |
| 06/01/1994 | EP0599149A2 Dehumidifier for supplying air using variable flow rate and variable pressure in a membrane dryer |
| 06/01/1994 | EP0598917A1 Exhaust emission control system for internal combustion engine |
| 06/01/1994 | EP0598916A1 Exhaust emission control system for internal combustion engine |
| 06/01/1994 | EP0569400B1 Honeycomb body with non-uniform electric heating |
| 06/01/1994 | DE4340650A1 Zeolite contg. palladium used as absorbent for hydrocarbon in waste gas - esp. for removing ethylene from exhaust gas from engine, steam boiler or industrial plant. |
| 06/01/1994 | DE4240524A1 Separator, to remove dust from gas, combined with a ventilator - to minimise complexity and operating costs and is also effective at low power |
| 06/01/1994 | DE4240152C1 Ammonia removal from waste steam from protein treatment - by scrubbing with soln. contg. nitric acid and ammonium nitrate |
| 06/01/1994 | DE4239811A1 Verfahren zur Entschwefelung eines H¶2¶S-haltigen Rohgases Process for desulfurization of a H¶2¶S-containing raw gas |
| 06/01/1994 | CN2166878Y Apparatus for purifying smoke and removing dust |
| 05/31/1994 | US5316998 Activated alumina promoted with alkali metal |
| 05/31/1994 | US5316993 Molded bodies containing dealuminated zeolite Y and the process for their production |
| 05/31/1994 | US5316983 Apparatus for analysis of particulate material, analytical method for same, apparatus for production of ultrapure water, apparatus for manufacturing of semiconductor, and apparatus for production of pure gas |
| 05/31/1994 | US5316747 Forming carbon dioxide in catalytic reaction |
| 05/31/1994 | US5316744 Absorption column with external mixing for absorption of acetylene |
| 05/31/1994 | US5316738 Shells and ceramic poisoning prevention material with catalyst |
| 05/31/1994 | US5316737 Process for removing Nox and Sox from exhaust gas |
| 05/31/1994 | US5316661 Processes for converting feedstock organic compounds |
| 05/31/1994 | US5316569 Copper steel wool and carbon as filter media |
| 05/31/1994 | US5316568 Method and apparatus for producing fluid flow |
| 05/31/1994 | US5315832 Process for the recovery of a light hydrocarbon fraction from marine loading operations |
| 05/31/1994 | US5315824 Cold HC adsorption and removal apparatus for an internal combustion engine |
| 05/31/1994 | CA2110367A1 Adsorbent for hydrocarbons in exhaust gas |
| 05/31/1994 | CA2110308A1 Catalyst for purification of diesel engine exhaust gas |
| 05/31/1994 | CA2092365A1 Dehumidification apparatus |
| 05/31/1994 | CA2072140C Vibratory ion vapor generator |
| 05/31/1994 | CA1329910C Cryogenic process for simultaneous selective desulfurization and degazolization of a gazeous mixture mainly made of methane and of some h_s and c_ or higher hydrocarbons |
| 05/31/1994 | CA1329898C Reactive posttreatment for gas separation membranes |
| 05/26/1994 | WO1994011685A1 Improved method and apparatus for achieving high reaction rates |
| 05/26/1994 | WO1994011623A2 Method and apparatus for treating an engine exhaust gas stream |
| 05/26/1994 | WO1994011467A1 Method for reducing harmful emissions from a diesel engine equipped with a particulate trap |
| 05/26/1994 | WO1994011105A1 Process for removing sulphur dioxide from a sulphur dioxide-containing gas stream |
| 05/26/1994 | WO1994011101A1 Apparatus and method for reducing pollutants in effluent gas flow |
| 05/26/1994 | WO1994011092A1 Air treating method using photocatalyst under interior illumination |
| 05/26/1994 | WO1994011091A1 Catalytic process |
| 05/26/1994 | WO1994011090A1 Pre-treatment of natural gas to be condensed to liquefied natural gas (lng) |
| 05/26/1994 | DE4319327C1 Cleaning of gases using two or more sorption filter beds in series - when predetermined loading of first filter bed is reached, sorption material in first bed is renewed and gas flow is reversed |
| 05/26/1994 | DE4239243A1 Verfahren zur Trennung eines Gemisches aus Methanol und Tetrahydrofuran in seine Bestandteile A method for separating a mixture of methanol and tetrahydrofuran in its components |
| 05/26/1994 | DE4239022A1 Sepn. of hydrogen@ and gas of higher b.pt. esp. ammonia from gas mixt. - esp. purge gas from ammonia synthesis by partial ammonia condensation near triple point and hydrogen sepn. by permeation without adsorption |
| 05/26/1994 | DE4238170A1 Ozone treatment of effluent treatment off gases, - especially to remove hydrogen sulphide and methane |
| 05/26/1994 | CA2149677A1 Process for removing sulphur dioxide from a sulphur dioxide-containing gas stream |
| 05/26/1994 | CA2149314A1 Pre-treatment of natural gas to be condensed to liquefied natural gas (lng) |
| 05/26/1994 | CA2146244A1 Method and apparatus for treating an engine exhaust gas stream |
| 05/26/1994 | CA2103474A1 Process for removing and destroying low concentrations of oxidizable organic contaminants from a gas stream |
| 05/25/1994 | EP0598530A1 Processing of fuel gases, in particular for fuel cells and apparatus therefor |
| 05/25/1994 | EP0598321A1 Adsorption Process with mixed repressurization and purge/equalization |
| 05/25/1994 | EP0598319A1 Extended vacuum swing adsorption process |
| 05/25/1994 | EP0598178A1 Catalyst for purifying exhaust gas |
| 05/25/1994 | EP0597965A1 Demetallation of hydrocarbon feedstocks with a synthetic mesoporous crystalline material |
| 05/25/1994 | EP0597954A1 Synthetic porous crystalline material, its synthesis and use |
| 05/25/1994 | EP0597890A1 Removal of hydrogen sulphide. |
| 05/25/1994 | CN2165919Y Combined vertical adsorption layer waste gas purifier |
| 05/25/1994 | CN2165918Y SF6 gas recovery filtering unit |
| 05/25/1994 | CN2165917Y Unidirectional flow separator for fume |
| 05/25/1994 | CN1087023A Catalyst-downcomer-tray for chemical process tower |
| 05/24/1994 | US5314852 Chemically impregnated zeolite and method for chemically impregnating and coating zeolite |
| 05/24/1994 | US5314673 Process for the conversion of N2 O |
| 05/24/1994 | US5314672 Ethylenediamine-formaldehyde |
| 05/24/1994 | US5314671 Process and device for removal of H2 S |
| 05/24/1994 | US5314666 Hydrolysis to carbon dioxide and hydrogen sulfide |
| 05/24/1994 | US5314604 Sensor element for limit current sensors to determine the λ-value of gas mixtures |
| 05/24/1994 | US5314528 Permeation process and apparatus |
| 05/24/1994 | US5313792 Transistion metal-zeolite first catalyst, three-way second catalyst and noble metal third catalyst |
| 05/24/1994 | US5313781 Gasification-combined power plant |
| 05/24/1994 | CA1329758C Multiple stage gas absorber |
| 05/19/1994 | DE4319294C1 Denitrification of engine exhaust gas without adding reducing agent - by adsorption in adsorber in exhaust pipe, periodic desorption with hot gas and recirculation to combustion in suction air supply |
| 05/19/1994 | DE4300933C1 Titania denitrification catalyst regeneration to remove arsenic - by contact with gas contg. hydrogen, then oxidising gas in simple, effective non-destructive process |
| 05/19/1994 | DE4238324A1 Removal of dangerous contaminants from oxygen-contg. gases - gas stream is treated with ozone as well as with UV-light |
| 05/18/1994 | EP0597786A1 Process and device for the treatment of work atmospheres with a cyclonic heat exchanger |
| 05/18/1994 | EP0597738A1 By lanthan stabilized alumina and its procedure for preparation |
| 05/18/1994 | EP0597393A1 Process for cleaning harmful gas |
| 05/18/1994 | EP0597300A2 Polymer membrane containing material specific carriers, process for its production and its utilisation for separating substance compositions |
| 05/18/1994 | EP0597276A1 N,N'-2.2-3.3-Tetramethylethylene-bis(5-NO2-salicyliden-iminato) cobalt(II) and its use as oxygene carrier |
| 05/18/1994 | EP0597237A2 Process for computer controlled frontal alternating closure of channels of a honeycomb body monolith for exhaust gas purifiers of combustion engines |
| 05/18/1994 | EP0597106A1 Exhaust and purification device for internal combustion engine |
| 05/18/1994 | EP0596927A1 Catalyst and catalytic reduction. |
| 05/18/1994 | EP0581850A4 Advanced reburning for reduction of no x? emissions in combustion systems |
| 05/18/1994 | CN1024524C Method for operation of claus-apparatus |
| 05/17/1994 | US5312609 Desulfurization by producing calcium and magnesium sulfite and scrubbing |
| 05/17/1994 | US5312608 Exhaust gas purifying catalyst and an exhaust gas purifying method using the catalyst |
| 05/17/1994 | US5312605 Method for simultaneously removing SO2 and NOX pollutants from exhaust of a combustion system |
| 05/17/1994 | US5312598 Pollution control |
| 05/17/1994 | US5312477 Adsorption/regeneration process |
| 05/17/1994 | CA2037690C Method for reducing methane exhaust emissions from natural gas fueled engines |
| 05/17/1994 | CA1329588C Process and device for exchanging heat and matter |
| 05/17/1994 | CA1329582C Acid gas absorbent composition |
| 05/17/1994 | CA1329467C Removal and recovery of sulphur dioxide from gas streams |
| 05/14/1994 | CA2102934A1 Process and apparatus for pollution control of working areas, using cyclone exchanger |
| 05/12/1994 | CA2102722A1 Processing of fuel gases, in particular for fuel cells, and apparatus therefor |
| 05/11/1994 | WO1994010618A1 System for controlling flow through a process region |
| 05/11/1994 | WO1994010617A1 Remote region vacuum regulator |
| 05/11/1994 | WO1994010433A1 Intercooler apparatus |
| 05/11/1994 | WO1994010266A1 Process and arrangement for scrubbing fuel gas |
| 05/11/1994 | WO1994010265A1 Process for recovering olefins from cat-cracked gas without accumulating undesirable oxides of nitrogen |
| 05/11/1994 | WO1994010095A1 Open-pore bulk mineral materials containing microorganisms, and the manufacture and use of such materials |
| 05/11/1994 | WO1994009903A1 Catalytic converter with metal monolith having an integral catalyst |
| 05/11/1994 | WO1994009902A1 Catalyst system of the structured type |
| 05/11/1994 | WO1994009896A1 Process and composition for sorbent reduction of n2o |
| 05/11/1994 | WO1994009887A1 Process for purifying a current of smoke gas |