| Patents for C01B 17 - Sulfur; Compounds thereof (11,743) |
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| 06/06/1990 | EP0371780A1 Multi-element metal chalcogenide |
| 06/05/1990 | US4931269 Process for the purification and reheating of exhaust gases |
| 06/05/1990 | US4931265 Oxidizing sulfur to sulfur trioxide |
| 06/05/1990 | US4931264 Process for removing sulfur from sulfur-containing gases |
| 06/05/1990 | US4931262 Method of treating H2 S containing gases |
| 06/05/1990 | CA1270001A1 Oligomerization of olefins |
| 06/05/1990 | CA1269820A1 Method and device for selective extraction of gaseous h.sub.2s from a gas containing same |
| 05/31/1990 | DE3840238A1 Process and apparatus for producing a rich gas stream |
| 05/30/1990 | EP0370145A1 Process for selectively removing hydrogen sulfide from a gas stream at high pressure |
| 05/30/1990 | CN1042527A Treatment for waste acid |
| 05/29/1990 | CA1269636A1 Process and a device for flue gas desulphurization |
| 05/29/1990 | CA1269513A1 Cleaning a sulphur filter screen |
| 05/29/1990 | CA1269503A1 Method of recovering alkali chemicals from flue gases containing alkaline metal vapor |
| 05/23/1990 | EP0369973A1 A method for decolouring sulphuric acid deriving from acid production processes |
| 05/23/1990 | EP0368978A1 Process and device for removal of h2s. |
| 05/23/1990 | EP0368934A1 Gas and alcohol recovery process |
| 05/23/1990 | CN1042316A Removal of hydrogen sulfide from fluid streams with minimum production of solids |
| 05/23/1990 | CN1008070B Stabilized solution of chelating agents for removing hydrogen sulfide from gaseous streams |
| 05/16/1990 | EP0368423A2 Removal and recovery of sulphur dioxide from gas streams |
| 05/16/1990 | EP0368422A2 Gas scrubbing processes |
| 05/16/1990 | EP0368203A2 Method for recovering sulfuric acid from a titanium sulfate waste liquor |
| 05/16/1990 | CN1007962B Selective absorption of sulfur dioxide from gases containing sulfur dioxide |
| 05/15/1990 | US4925639 Removal of nitric oxide from waste gases and recovery as nitric acid |
| 05/15/1990 | US4924897 Vent system |
| 05/08/1990 | US4923482 Process for separating sulfur from ore |
| 05/08/1990 | CA2002276A1 Method and apparatus for recovering sulfuric acid from a titanium sulfate waste liquor |
| 05/02/1990 | CN1041738A Process for preparing sulfur solvent compositions |
| 05/01/1990 | US4921682 Process for removing hydrogen sulphide from gas streams |
| 05/01/1990 | CA2001890A1 Removal of hydrogen sulfide from fluid streams with minimum production of solids |
| 04/25/1990 | EP0364703A2 Process for preparing sulfur solvent compositions |
| 04/25/1990 | CN1041575A Regeneration of chelated polyvalent metal solutions by controlled potental electrolysis |
| 04/25/1990 | CN1041554A Process for making compositions of powdery refractory inorganic compounds and metals |
| 04/24/1990 | US4919914 Removal of hydrogen sulphide from gaseous streams |
| 04/24/1990 | US4919912 Desulfurization by claus process |
| 04/24/1990 | US4919755 Dithionite solution of sodium borohydride, sodium hydroxide and a bisulfite solution |
| 04/18/1990 | EP0363683A1 Process for the recovery of greatly concentrated sulfuric-acid solutions by the treatment of diluted sulfate-containing sulfuric-acid concentrations |
| 04/17/1990 | US4917874 Desulfurization process |
| 04/17/1990 | US4917763 Method of recovering chemical from spent pulp liquors |
| 04/17/1990 | US4917024 Coal fired power plant with pollution control and useful byproducts |
| 04/17/1990 | CA1267771A1 Elimination process of cos and cs.sub.2 compounds from an industrial gas |
| 04/17/1990 | CA1267770A1 Process and apparatus for the purification of contaminated sulfur |
| 04/11/1990 | EP0362607A2 Process for the preparation of sulphur dioxide |
| 04/11/1990 | EP0362428A1 Process and apparatus for the treatment of a sulfuric-acid solution containing ferrous sulfate |
| 04/11/1990 | EP0271575B1 Layered metal chalcogenides containing interlayer chalcogenides and their synthesis |
| 04/11/1990 | CN1041143A Prodn method of sodium dithionite with improved purity and granularity |
| 04/10/1990 | US4915912 Apparatus for the generation of sulfur trioxide reagent and sulfonation of the surface of polymeric resins |
| 04/06/1990 | CA2000312A1 Process and device for the reworking of a dilute sulphuric acid solution which contains dissolved ferrous sulphate or a mixture of dissolved metal sulphates which are mainly ferrous sulphate |
| 04/04/1990 | EP0361998A1 Process for preparing crystals of anhydrous sodium sulfide |
| 04/04/1990 | EP0361895A2 Regeneration of chelated polyvalent metal solutions by controlled potential electrolysis |
| 04/04/1990 | EP0361220A1 Process for the preparation of lower sodium polysulfides from higher sodium polysulfides and sodium |
| 04/04/1990 | CA2000027A1 Hydrogen sulfide removal and sulfide recovery |
| 04/03/1990 | CA1267253A1 Rubber dispersive agent for insoluble sulphur and its process |
| 03/28/1990 | EP0261116B1 Method of recovering alkaline chemicals from flue gases containing alkaline metal vapor |
| 03/28/1990 | CN1040744A Removal of hydrogen sulfide from fluid streams |
| 03/27/1990 | CA1266959A1 Treatment of solids containing calcium salt of sulfuric oxyacid and method of purifying exhaust gas utilizing same |
| 03/21/1990 | EP0359020A1 Process for the recovery of wastes containing sodium sulfate |
| 03/21/1990 | EP0295269B1 Layered metal oxides containing interlayer oxides and their synthesis |
| 03/21/1990 | CN1040518A Catalyst for treating gaseous fluid material and process for treating them |
| 03/20/1990 | US4909945 Method for increasing the size of elemental sulfur particles produced by a hydrogen sulfide removal process |
| 03/20/1990 | CA1266844A1 Process for hydrotreating residual petroleum oil |
| 03/20/1990 | CA1266758A1 Production of sulfur from an oxygen enriched claus system |
| 03/14/1990 | CN2054373U Large open pore full-ceramic globe arch for hydric sulphate dry absorption tower |
| 03/13/1990 | US4908201 Vaporizing deposited sulfur in the presence of a gas-in process richer in hydrogen sulfide and sulfur dioxide than the gas containing the catalyst, stripping sulfur with acid gas |
| 03/13/1990 | US4908043 Method of producing crystals of anhydrous sodium sulfide |
| 03/13/1990 | CA1266638A1 Process for the removal of h.sub.2s from geothermal steam and the conversion to sulfur |
| 03/13/1990 | CA1266553A1 Process for the removal of undesirable metal ions, especially vanadium ions, in the concentration of dilute iron (ii) sulfate-containing sulfuric acid solutions |
| 03/08/1990 | WO1990002096A1 Process for catalytic oxidation of hydrogen sulphide |
| 03/08/1990 | WO1990001984A1 Removal of hydrogen sulfide from fluid streams |
| 03/07/1990 | EP0357506A1 Catalysts for treating gaseous affluents, and process for treating the same |
| 03/07/1990 | EP0356693A2 Process and apparatus for producing sulfuric acid |
| 02/28/1990 | EP0356384A2 Recycling of sulfuric-acid waste with the aid of a biological process |
| 02/28/1990 | EP0238592B1 Method for the selective removal of h2s from a h2s-containing gas |
| 02/28/1990 | CN1040009A Process of sulfuric acid from gupse |
| 02/27/1990 | US4905160 Device for regulating the operation of a chemical treatment plant, to improve efficiency by attenuation of the variances of the regulating parameters |
| 02/27/1990 | US4904627 Alkaline earth metal spinel/kaolin clays and processes for making |
| 02/22/1990 | WO1990001369A1 Catalyst for liquid-phase oxidation of sulfur-containing compounds |
| 02/20/1990 | US4902765 Allyl thiourea polymers |
| 02/20/1990 | US4902493 Process for the generation of sulfur trioxide reagent and sulfonation of the surface of polymeric resins |
| 02/20/1990 | US4902307 Synthesis of SiO2 membrane on porous support and method of use of same |
| 02/01/1990 | DE3829254A1 Verfahren zur katalytischen oxidation von schwefelwasserstoff Process for the catalytic oxidation of hydrogen sulfide |
| 02/01/1990 | DE3826281A1 Transition metal chalcogenide of the composition MX2, process for the preparation of MX2 material and use thereof |
| 01/30/1990 | US4897251 Catalytic removal of hydrogen sulphide from liquid sulphur |
| 01/30/1990 | US4897247 Treatment of exhaust gases to reduce multi-valent heavy metals |
| 01/24/1990 | CN1038999A Condensing sulfuric acid vapours to produce sulfuric acid |
| 01/23/1990 | CA1264506A1 Method of recovering chemicals from spent pulp liquors |
| 01/17/1990 | CN1038796A Sulfuric acid process and apparatus |
| 01/16/1990 | US4894216 Oxidation catalysts, regeneration, desulfurization, circulation |
| 01/10/1990 | EP0349671A1 Process for separating heavy metals from waste water by sulfide precipitation using calcium polysulfide |
| 01/10/1990 | EP0238591B1 Method and device for the selective removal of h 2?s from a h 2?s-containing gas |
| 01/09/1990 | US4892723 Pretreatment with charcoal |
| 01/09/1990 | US4892718 Decontamination of gases by scrubbing |
| 01/09/1990 | US4892717 Method for preventing oxygen from deactivating sulfactive reducing catalysts |
| 01/03/1990 | EP0348875A2 Method for the recovery of sulfur |
| 01/03/1990 | EP0239603B1 Method and device for the selective removal of h 2?s from an h 2?s-containing gas |
| 01/02/1990 | US4891206 Process for the removal of undesirable metal ions, especially vanadium ions, in the concentration of dilute iron(II) sulfate-containing sulfuric acid solutions |
| 01/02/1990 | US4891205 Stabilized chelating agents for removing hydrogen sulfide |
| 01/02/1990 | US4891196 Intermediate for high clarity shampoo base |
| 12/27/1989 | CN1006219B Process and equipment for prodn. of sulfuric acid by chlorine method form waste gas of sulfur dioxide |
| 12/27/1989 | CA1264041A1 Vent system |
| 12/26/1989 | US4889701 Process for oxidizing multivalent metals |