| 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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| 02/25/1999 | DE19736628A1 Catalyst arranged in muffler for cleaning exhaust gas |
| 02/25/1999 | DE19736556A1 Removing acidic gases from combustion flue gas in fluidised bed process |
| 02/25/1999 | DE19736336A1 Catalyst for removal of hydrogen peroxide and ozone from air flow |
| 02/25/1999 | DE19736293A1 Removal of impurities and odor from effluent air from sewage or water treatment |
| 02/25/1999 | CA2301294A1 Two stage process for drying of raw wood material |
| 02/24/1999 | EP0898443A1 Reflow soldering device |
| 02/24/1999 | EP0898061A2 Process for metering a reducing agent to the nitrogen-oxide containing exhaust gas of an internal combustion engine |
| 02/24/1999 | EP0897746A1 Reactor for chemical reactions, in particular for adsorption separation processes |
| 02/24/1999 | EP0897741A2 Exhaust gas purification system of internal combustion engine |
| 02/24/1999 | EP0897738A1 Cleaning apparatus, filter and method of manufacturing the same |
| 02/24/1999 | EP0897461A1 Heat exchanger efficiency control by differential temperature |
| 02/24/1999 | EP0897320A1 Three-way catalyst for treating exhaust gases |
| 02/24/1999 | EP0858827A4 Membrane element |
| 02/24/1999 | CN2308811Y Spraying impact sweetening duster |
| 02/24/1999 | CN2308434Y Water-filtering fume eliminating and dust catcher |
| 02/24/1999 | CN1209190A Method and apparatus for reducing pollutants and contaminants in exhaust gases of engine |
| 02/24/1999 | CN1208811A Coated catalytic converter substrates and mounts |
| 02/24/1999 | CN1208670A 固体超强酸光催化剂 Solid superacid photocatalysts |
| 02/24/1999 | CN1208667A Multiple adsorbent loading method and apparatus for radial flow vessel |
| 02/24/1999 | CN1042215C Oxygen generating method based on pressure variation adsorption separation |
| 02/23/1999 | US5874701 Photocatalytic air treatment process under room light |
| 02/23/1999 | US5874057 Lean NOx catalyst/trap method |
| 02/23/1999 | US5874053 Multistage oxidizer; for catalytic converters |
| 02/23/1999 | US5874051 Method and apparatus for selective catalytic oxidation of carbon monoxide |
| 02/23/1999 | US5873929 Gas treatment bottle |
| 02/23/1999 | US5873928 Multiple stage semi-permeable membrane process and apparatus for gas separation |
| 02/23/1999 | US5873388 Pressure surge damping system |
| 02/23/1999 | US5873329 Refractory lining in the transition of a gasifier to the waste heat boiler |
| 02/23/1999 | US5873252 Condensate separator |
| 02/23/1999 | US5873242 Apparatus for purifying exhaust gas |
| 02/23/1999 | CA2177912C Adsorbent for removal of trace oxygen from inert gases |
| 02/23/1999 | CA2141491C Fluidizable sulfur sorbent and fluidized sorption |
| 02/23/1999 | CA2084225C A procedure for regulating the quantity of a processing medium that is used to reduce the nitrogen monoxide content in the exhaust gases generated by combustion processes |
| 02/18/1999 | DE19824915C1 Method of controlling fuel injection for motor vehicle internal combustion engine |
| 02/18/1999 | DE19736154A1 Optimising gypsum quality during wet flue gas desulphurisation |
| 02/18/1999 | DE19729003A1 Tank für ein Fahrzeug mit reduktionsmittelbetriebener Abgas-Reinigungsanlage A tank for a vehicle with a reducing agent-operated exhaust gas cleaning system |
| 02/18/1999 | CA2213305A1 Method of recovering fluorine compounds from vapors exiting wet process phosphoric acid evaporators |
| 02/17/1999 | EP0896949A1 Air ozone mixer and ozone fog generator |
| 02/17/1999 | EP0896831A1 Apparatus and process for the catalytic NOx-reduction in oxygen-containing engine exhaust gases |
| 02/17/1999 | EP0896667A1 Process and device for detecting oxidable and/or reducible gasses in air |
| 02/17/1999 | EP0896573A1 Method for treating solid waste materials from wet gas cleaning systems blowoff |
| 02/17/1999 | EP0753127B1 Method of purifying the exhaust gases from a drying process operating with heated gas |
| 02/17/1999 | EP0540666B1 Methods for reducing sulfides in sewage gas |
| 02/17/1999 | CN2307624Y Multifunction gas purification energy-saving device |
| 02/17/1999 | CN2307623Y Spray bumping desulfurization dust remover |
| 02/17/1999 | CN2307622Y Separated small-sized oxygenerator |
| 02/17/1999 | CN1208361A Process for reducing NOx from exhaust fumes |
| 02/17/1999 | CN1208360A Method for removing sulfur-containing contaminants, aromatics and hydrocarbonsx from gas |
| 02/17/1999 | CN1207955A Process and installation for separation of gas mixture by adsorption |
| 02/17/1999 | CN1207954A Producing method for ultra-purify air |
| 02/16/1999 | US5872072 Catalytic compositions and a deodorizing method using the same |
| 02/16/1999 | US5871703 Oxidation by barrier, pulse, corona or electron beam electrical discharge, collecting acids and particles by electrostatic precipitation, separation of acids from particles |
| 02/16/1999 | US5871674 Tower packing element |
| 02/16/1999 | US5871646 Hydrolysis of a solution of tetraethyl silicate and aluminum nitrate |
| 02/16/1999 | US5871624 Modular ceramic oxygen generator |
| 02/16/1999 | US5871568 Return circuit for vapor recovery system |
| 02/16/1999 | US5871565 Vacuum/pressure swing adsorption (VPSA) for production of an oxygen enriched gas |
| 02/16/1999 | US5871564 Pressure swing adsorption apparatus |
| 02/16/1999 | US5871563 Compression follwed by absorptina by glycol ethers at higher pressure, expansion, and removal of condensing impurities |
| 02/16/1999 | US5871347 For removal of contaminants from process gases |
| 02/16/1999 | CA2109055C Thermally coupled pressure swing adsorption |
| 02/16/1999 | CA2102774C Adsorption process with mixed repressurization and purge/equalization |
| 02/16/1999 | CA2053571C Gas reacting apparatus and method |
| 02/16/1999 | CA2050974C Sulfur dioxide removal process with gypsum and magnesium hydroxide production |
| 02/16/1999 | CA2014560C Selective removal of hydrogen sulfide over a zinc oxide and silica absorbing composition |
| 02/12/1999 | WO1999061134A1 Air cleaning filter, process for preparing the same, and high-level cleaner |
| 02/11/1999 | WO1999006147A1 Method and device for treating ceramic components |
| 02/11/1999 | WO1999006138A1 Co2-selective membrane process and system for reforming a fuel to hydrogen for a fuel cell |
| 02/11/1999 | WO1999006137A1 Pure oxygen by diffusion |
| 02/11/1999 | WO1999006130A1 Liquid distributor |
| 02/11/1999 | DE19734259A1 Production of highly pure hydrogen |
| 02/11/1999 | DE19728699A1 Verfahren zur katalytischen Reduktion von Stickoxiden Process for the catalytic reduction of nitrogen oxides |
| 02/11/1999 | CA2298502A1 Method and device for treating ceramic components |
| 02/11/1999 | CA2294531A1 Co2-selective membrane process and system for reforming a fuel to hydrogen for a fuel cell |
| 02/11/1999 | CA2289632A1 Liquid distributor |
| 02/10/1999 | EP0896136A2 Device for reactivating catalyst of engine |
| 02/10/1999 | EP0896134A2 Exhaust gas purifying system for engine |
| 02/10/1999 | EP0895966A1 Zincoaluminosilicates of the FAU structure |
| 02/10/1999 | EP0895812A1 Exhaust gas purifying catalyst and process of producing the same |
| 02/10/1999 | EP0895810A1 Exhaust gas purifying catalyst and process of producing the same |
| 02/10/1999 | EP0895803A2 System for exhaust gas purification |
| 02/10/1999 | EP0895802A2 DeNOx catalyst |
| 02/10/1999 | EP0895801A2 Method for decomposing nitrogen fluoride or sulfur fluoride and decomposing reagent used therefor |
| 02/10/1999 | EP0895800A1 Absorption column |
| 02/10/1999 | EP0804282B1 Method and device for purifying gases |
| 02/10/1999 | EP0559844B1 Palladium partial combustion catalysts and a process for using them |
| 02/10/1999 | CN2306826Y Flue gas desulfurization dust remover |
| 02/10/1999 | CN1207367A Method for treatment of residual coking ammonia water or all coking waste water with flue gas |
| 02/10/1999 | CN1207362A Purification of hydrochloric acid as by-product in synthesis of methylsulfonic acid |
| 02/10/1999 | CN1207327A Multilayer adsorbent beds for PSA gas separation |
| 02/10/1999 | CN1041994C Dry-type exhaust gas desulfurizing apparatus |
| 02/09/1999 | US5870664 Method and apparatus for removing impurity by an improved electrode |
| 02/09/1999 | US5869419 Nitrogen oxide removal catalyst |
| 02/09/1999 | US5869013 Catalysis with a beta type zeolite exchanged with cobalt, with a cobalt:aluminum ratio lower than 0.5, in combination with saturated hydrocarbons as reducing agents; long life catalyst, good conversion rates |
| 02/09/1999 | US5869009 Filter device |
| 02/09/1999 | US5868992 Treatment of gas separation membranes with inert solvent |
| 02/09/1999 | US5868918 Method for separating oxygen from an oxygen-containing gas |
| 02/09/1999 | US5868818 Adsorbent for air separation, production method thereof, and air-separation method using it |
| 02/09/1999 | US5868005 Process for dehydrating and degassing a gas, comprising two complementary solvent regeneration steps |
| 02/09/1999 | US5868004 Dividing into fractions; one is cooled without a solvent, the second is contacted with an aqueous phase fraction obtained after cooling; gas phase with solvent, aqueous phase without-gas cooled to a lower temperature; reduced size of units |