| 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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| 02/28/1991 | DE4026800A1 Organic, esp. solvent, vapour disposal - by ionisation or dissociation in alternating electromagnetic field |
| 02/28/1991 | DE3927729A1 Aiding ammonia or methanol prodn. by steam reforming - with energy from fuel cell using oxygen and hydrogen from adsorption system |
| 02/27/1991 | EP0414292A1 Process for removing of acid compounds from hot gases |
| 02/27/1991 | EP0414170A2 Aqueous aldehyde solution for absorbing hydrogen sulfide |
| 02/27/1991 | EP0414095A1 Exhaust gas purification process and apparatus for carrying out the process |
| 02/27/1991 | EP0414094A2 Flue gas desulfurization |
| 02/27/1991 | EP0413998A1 Device for the purification of exhaust gases |
| 02/27/1991 | EP0413882A1 Filter bottom for a biofilter plant |
| 02/27/1991 | EP0413791A1 Absorber for a diffusion absorption plant. |
| 02/27/1991 | CN1049511A Closed loop gas dehydration process and apparatus |
| 02/26/1991 | US4996181 Mixture of oxides, hydroxides, carbonates or basic carbonates of zinc, copper and one of groups 3,4,5,6 or 7 |
| 02/26/1991 | US4996180 To combat air pollution from internal combustion engines |
| 02/26/1991 | US4996036 Adding nitrogen dioxide to emission gases, contacting with aqueous alkali solution |
| 02/26/1991 | US4996032 Process for removing sulfur dioxide from flue gases |
| 02/26/1991 | US4996030 Removing toxic arsine, phosphine, diborane and hydrogen selenide using cupric oxide, manganese dioxide and silicon, aluminum or zinc oxides |
| 02/26/1991 | US4995964 Catalyst selectivity, stability |
| 02/26/1991 | US4995955 Optically-assisted gas decontamination process |
| 02/26/1991 | US4995890 Storage terminal vapor emission control system |
| 02/26/1991 | US4995889 Control of product withdrawal from a sorptive separation system |
| 02/26/1991 | US4995888 Separation of gas from solvent by membrane technology |
| 02/24/1991 | CA2023825A1 Aqueous aldehyde solutions for trapping hydrogen sulfide |
| 02/23/1991 | WO1991002583A1 Method for reducing wear on nozzles or other supply means |
| 02/23/1991 | CA2059535A1 Method for reducing wear on nozzles or other supply means |
| 02/21/1991 | WO1991001795A1 Method of treating exhaust gas |
| 02/21/1991 | WO1991001794A1 Process for removing volatile organic compounds from air streams |
| 02/21/1991 | WO1991001784A1 Method and apparatus for separation processes |
| 02/21/1991 | DE3940412A1 Schuettgutreaktor Schuettgutreaktor |
| 02/21/1991 | DE3927409A1 Two-stage drying of hot moist compressed air - using adsorption section periodically regenerated by compression heat |
| 02/20/1991 | WO1991002586A1 Bulk materials reactor |
| 02/20/1991 | EP0413638A1 Preparation of peat beads which are applied to biofilters |
| 02/20/1991 | EP0413517A2 Control system for an industrial dryer |
| 02/20/1991 | EP0413148A2 Polycarbonate gas separation membranes and processes for making and using the same |
| 02/20/1991 | EP0413060A1 Closed loop gas dehydration process and apparatus |
| 02/20/1991 | EP0240500B1 Separator assembly |
| 02/20/1991 | CN1049321A Waste gas governing technology about refining sulphur from sulphur iron ore in indigenous method |
| 02/20/1991 | CN1049320A Catalyst for selective oxidation of sulphur compounds to elemental sulphur, process for preparing such catalyst and method for seletive oxidation of sulphur compounds to elemental sulphur |
| 02/20/1991 | CN1049295A Process for catalytic decomposition of chlorofluoro-alkanes |
| 02/20/1991 | CN1049294A Method and apparatus for simultaneously scrubbing cement kiln exhaust gas and producing useful by-products therefrom |
| 02/20/1991 | CN1049293A Moving rocking-horses |
| 02/20/1991 | CN1011689B Crystalline gallophosphate compositions |
| 02/20/1991 | CN1011663B Chemical processing with operational step sensitive to feedstream component |
| 02/20/1991 | CN1011662B Method of controlling wet-process flue gas desulfurization |
| 02/20/1991 | CA2039146A1 Bulk materials reactor |
| 02/19/1991 | US4994430 Method of preparing a plate-like support bearing catalytically active compounds |
| 02/19/1991 | US4994247 Preparation of catalyst for oxidation of carbon monoxide |
| 02/19/1991 | US4994246 Method for removing sulfur oxides from combusting gases in wet, calcium-based flue gas desulfurization processes |
| 02/19/1991 | US4994245 Neutralizing ammonia with acid, bleaching sulfides, removing formed chlorine with peroxide; oxidation process |
| 02/19/1991 | US4994210 Trough |
| 02/19/1991 | US4994094 Method of removing organic compounds from air/permanent gas mixtures |
| 02/17/1991 | CA2007917A1 Closed loop gas dehydration process and apparatus |
| 02/16/1991 | WO1991002582A1 Process and device for processing materials from which methane and other chemicals, being harmful to the environment, may escape |
| 02/16/1991 | CA2064698A1 Process and device for processing materials from which methane and other chemicals, being harmful to the environment, may escape |
| 02/14/1991 | DE3926597A1 Appts. to adsorb moisture, etc. from gas stream - has reserve absorbent in external store to compensate for erosion and shrinkage of absorbent |
| 02/14/1991 | DE3926393A1 Recovering combustion heat from organic components in liq. - using interconnected indirect heat exchangers |
| 02/14/1991 | DE3925879A1 Flue gas cleaning process - using spray absorption residue as desulphurising agent in wet scrubbing |
| 02/13/1991 | EP0412663A2 Gas separation apparatus with multiple head pumping |
| 02/13/1991 | EP0412593A2 Device for the catalytic reaction of a gas mixture containing H2S and SO2 by the Claus process |
| 02/13/1991 | EP0412591A1 Method of precipitating alkali and heavy metal compounds from hot gases |
| 02/13/1991 | EP0412501A1 Oxidation of carbon monoxide and catalyst therefor |
| 02/13/1991 | EP0412456A2 A process for the catalytic decomposition of chlorofluoro-alkanes |
| 02/13/1991 | EP0412103A1 Electrically conductive honeycomb body, process for monitoring it and its use as a support for an exhaust gas catalyst. |
| 02/13/1991 | EP0412086A1 Arrangement for accelerating the response of an exhaust gas catalyst. |
| 02/13/1991 | EP0412079A1 Filtering medium for technical filters. |
| 02/13/1991 | CN2071081U Exhaust air purifier |
| 02/13/1991 | CN1011576B Method and apparatus for recovery of solvent vapours from an air stream |
| 02/12/1991 | US4992620 Removal of trialkyl arsines from fluids |
| 02/12/1991 | US4992618 Adsorptive separation process for the purification of heavy normal paraffins with non-normal hydrocarbon pre-pulse stream |
| 02/12/1991 | US4992407 Catalyst consisting of a metal layer system for the removal of hydrogen from a gas mixture |
| 02/12/1991 | US4992405 Alumina support, lanthanum oxide, palladium and rhodium, and titanium oxide |
| 02/12/1991 | US4992404 Denitrification catalyst |
| 02/12/1991 | US4992249 Injecting dispersion of dilute aqueous solution into effluent from oxygen-rich combustion of carbonaceous fuel |
| 02/12/1991 | US4992233 Sintering metal powders into structures without sintering aids |
| 02/12/1991 | US4991605 Container for additive materials for smoking articles |
| 02/09/1991 | CA2021552A1 Apparatus for a catalytic reaction of a gas mixture which contains h2s and so2 by the claus process |
| 02/08/1991 | WO1991001793A1 METHOD FOR REDUCING NOx IN A COMBUSTION PROCESS |
| 02/08/1991 | CA2038951A1 Method for reducing nox in a combustion process |
| 02/07/1991 | WO1991001361A1 Method for catalyzing fuel for powering internal combustion engines |
| 02/07/1991 | WO1991001178A1 Honeycomb body with internal flow-conducting surfaces, in particular catalyst body for motor vehicles |
| 02/07/1991 | WO1991001175A1 Low temperature oxidation process |
| 02/07/1991 | DE3925984A1 Hot waste gas desulphurisation - by cooling, reaction with chlorine in static mixer and absorption |
| 02/07/1991 | DE3925818A1 Dust removal from zinc baths in hot galvanising unit - uses auxiliary zinc ash dust flow which facilitates dust extn. and when satd. is processed for reuse |
| 02/07/1991 | DE3925343A1 Treating hot brewery plant emissions - by condensn. and cyclone separator followed by adsorption |
| 02/07/1991 | DE3925296A1 Trace impurity removal from inert or noble gas - using successive packings of metal, esp. calcium, and hydride storage material |
| 02/07/1991 | DE3925186A1 Exhaust gas detoxification unit for Otto engines - converts carbon mon:oxide, hydrocarbon(s) and nitrogen oxide(s) into carbon di:oxide, water and nitrogen |
| 02/07/1991 | CA2019136A1 Oxidation of carbon monoxide and catalyst therefor |
| 02/06/1991 | EP0411506A2 Production of hydrogen, carbon monoxide and mixtures thereof |
| 02/06/1991 | EP0411454A1 Method for reducing the oxidation velocity of sulfite solutions |
| 02/06/1991 | EP0411412A1 Process and apparatus for regenerating active carbon loaded with heavy metals |
| 02/06/1991 | EP0411289A1 Moving bed filter |
| 02/06/1991 | EP0411254A1 Production of dry, high purity nitrogen |
| 02/06/1991 | EP0411206A1 Deodorant and deodorizing method |
| 02/06/1991 | EP0411162A1 Method of removing chlorine from exhaust gases |
| 02/06/1991 | EP0411094A1 A process for the removal of nitrogen oxides from offgases from turbines. |
| 02/06/1991 | EP0411049A1 Composition for introduction into a high temperature environment |
| 02/06/1991 | EP0410977A1 Economic recovery and utilization of boiler flue gas pollutants |
| 02/06/1991 | CN1011487B Apparatus for increasing putting gaseous medium into liquid medium |
| 02/06/1991 | CA2022212A1 Process for the catalytic decomposition of chlorofluoro-alkanes |
| 02/05/1991 | US4990318 Selective removal of hydrogen sulfide over a nickel-promoted absorbing composition |
| 02/05/1991 | US4990317 Process for the treatment of hot waste gas containing hydrogen chloride |
| 02/05/1991 | US4990315 Apparatus for desulfurization |