| Patents for C01B 17 - Sulfur; Compounds thereof (11,743) |
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| 04/30/1991 | CA1283647C Layered silicates and their synthesis |
| 04/30/1991 | CA1283646C Layered metal oxides containing interlayer oxides and their synthesis |
| 04/28/1991 | CA2024547A1 Process and apparatus for concentrating a liquid which contains sulfuric acid and water |
| 04/25/1991 | CA2027973A1 Method of reprocessing jarosite-containing residues |
| 04/24/1991 | EP0424259A1 Process for the improvement of the sulphur yield of a sulphur production unit fed with a hydrogen sulphide containing acid gas |
| 04/23/1991 | US5010052 Zirconium dioxide gas desulfurization catalyst |
| 04/23/1991 | US5009868 Process for the extended use of strip acid employed in the reclamation of battery acid fluid from expanded lead-acid batteries |
| 04/20/1991 | WO1991005733A1 Process for the improvement of the sulphur yield of a sulphur production assembly which includes a sulphur plant and an oxidation and hydrolysis unit with a purification unit using a gas containing h2s |
| 04/18/1991 | WO1991004941A1 A method for producing elemental sulfur from sulfur-containing gases |
| 04/17/1991 | EP0422999A1 Catalysts for treating exhaust gases and process for treating these exhaust gases |
| 04/17/1991 | EP0422066A1 Removal of sulfur dioxide (so 2?) from waste gases and recovery as sulfuric acid. |
| 04/16/1991 | CA1282940C Process for the desulfurization of gas containing hydrogen sulfide |
| 04/10/1991 | EP0421629A1 Sulphuric acid recovery process |
| 04/10/1991 | EP0421500A1 Process for the desulfurization of a hydrogen sulfide containing gas |
| 04/10/1991 | CA2027015A1 Catalysts for treating gaseous effluents, and treatment process for said effluent |
| 04/09/1991 | US5006327 Bleaching pulps, clays & textiles |
| 04/09/1991 | CA1282574C Forms of transition metal dichalcogenides |
| 04/03/1991 | EP0419539A1 Condensing sulfuric acid vapours to produce sulfuric acid. |
| 04/02/1991 | US5004591 Catalyst containing basic and surfactant component |
| 04/02/1991 | US5004588 Contacting stream with water soluble oxidized catalyst which oxidizes hydrogen sulfide to sulfur |
| 03/27/1991 | EP0418803A1 Sulfur recovery process |
| 03/27/1991 | EP0418544A1 Process for the concentration of metal sulphate containing sulphuric acid |
| 03/27/1991 | CN1012165B Process of removing hydrogen sulfide from exhaust gas |
| 03/26/1991 | CA1281887C Catalytic process for the production of sulphur from an acidic gas containing h s |
| 03/26/1991 | CA1281886C Elimination process of sulphur compounds in residual gas, namely such as derived from a claus sulphur, with recapture of said compounds in the form of sulphur |
| 03/20/1991 | CN1012038B Integrated process for removal of sulfur compounds from fluid streams |
| 03/20/1991 | CA2023009A1 Sulfur recovery process |
| 03/13/1991 | EP0416666A1 Process for obtaining elemental sulphur from raw materials containing sulphides |
| 03/13/1991 | CN1049798A Disposable oxide carrier for scavenging hydrogen sulfide |
| 03/12/1991 | US4999178 Thermochemical cycle for splitting hydrogen sulfide |
| 03/12/1991 | CA2024885A1 Method and apparatus to enrich furnace gases with sulfur oxide |
| 03/06/1991 | EP0415465A1 Process for the combustion of a hydrogen sulfide-containing gas |
| 03/05/1991 | US4997535 From methane, sulfur dioxide and chlorine |
| 03/05/1991 | US4997486 Method of producing a solid secondary raw material containing calcium sulfate |
| 03/01/1991 | WO1991003422A1 Disposable oxide carrier for scavenging hydrogen sulfide |
| 02/27/1991 | EP0313592B1 Process for precipitating chromium and/or vanadium from sulphuric acid waste |
| 02/26/1991 | US4996038 Heat exchanging heat from absorption of sulfur trioxide in sulfuric acid, also heat of dilution; circulation, reuse |
| 02/24/1991 | CA2023688A1 Process for the concentration of sulphuric acid containing metal sulphates |
| 02/20/1991 | EP0413564A2 Formation of polymeric metal oxide materials |
| 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 |
| 02/19/1991 | US4994257 Continuosly repeating steps of reducing absorbent, absorption of sulfur compounds, reducing sulfur dioxide, regenerating absorbent |
| 02/13/1991 | EP0412593A2 Device for the catalytic reaction of a gas mixture containing H2S and SO2 by the Claus process |
| 02/13/1991 | CN2071181U Refining sulphur apparatus from liquified so2 by-product by burning purified oxygen |
| 02/13/1991 | CA2022041A1 Process of recovering sulfur from sulfide materials which contain thermally releasable sulfur |
| 02/12/1991 | US4992148 Process for the electrolytic manufacture of alkali metal sulphide |
| 02/09/1991 | CA2021552A1 Apparatus for a catalytic reaction of a gas mixture which contains h2s and so2 by the claus process |
| 02/06/1991 | EP0411687A2 Process for producing electrolytic lead and elemental sulfur from galena |
| 02/06/1991 | EP0410977A1 Economic recovery and utilization of boiler flue gas pollutants |
| 02/05/1991 | US4990319 Process for producing ammonia and sulfur dioxide |
| 01/30/1991 | EP0410585A1 Method for producing dust-free sodium dithionite |
| 01/29/1991 | US4988495 Process for the recorvery of sulphuric acid in the production of titanium dioxide |
| 01/29/1991 | US4988494 Desulfurization hydrogen sulfide gas or sulfur dioxide, oxidation, multistage, oxidation catalysts |
| 01/29/1991 | US4988287 Combustion apparatus and method |
| 01/23/1991 | EP0409480A2 Method of removing hydrogen sulfide from a gas |
| 01/23/1991 | EP0409353A1 Catalyst and process for the selective oxidation of hydrogen sulphide to elemental sulphur |
| 01/22/1991 | CA1279240C Process and product for sulfur dissolution |
| 01/21/1991 | CA2003010A1 Composition and method for removing hydrogen sulfide from gas streams |
| 01/20/1991 | CA2021151A1 Method of removing hydrogen sulfide from a gas |
| 01/16/1991 | EP0408100A1 Process for regenerating CO2- and H2S-containing washing solutions having a high boiling point |
| 01/15/1991 | CA1278919C Reduction burning and compositions therefore |
| 01/09/1991 | EP0407003A1 Gelling composition |
| 01/09/1991 | EP0406632A1 Process and apparatus for the concentration of metal sulphates containing sulphuric acid |
| 01/08/1991 | US4983557 Process for preparing a high-density and middle-porosity catalyst, supported on a siliceous matrix, based on vanadium |
| 01/02/1991 | EP0405265A1 Polyarylene sulfide films for gas separation |
| 01/02/1991 | EP0405238A1 Granulated photographic fixing composition and its preparation |
| 01/02/1991 | EP0405003A1 Process and apparatus for purifying sulphur |
| 01/02/1991 | EP0404958A1 Catalyst for liquid-phase oxidation of sulfur-containing compounds |
| 01/02/1991 | CN1048201A Method for operation of claus-apparatus |
| 01/01/1991 | US4981661 Process for converting and removing sulfur compounds from a CO containing gas |
| 12/29/1990 | WO1991000243A1 Removal of hydrogen sulfide from produced fluids |
| 12/29/1990 | CA2058296A1 Removal of hydrogen sulfide from produced fluids |
| 12/29/1990 | CA2019041A1 Method for producing dust-free sodium dithionite |
| 12/27/1990 | EP0403755A1 Process for the preparation of sodium monosulphide |
| 12/25/1990 | US4980333 Perovskite-related layered oxides containing interspathic polymeric oxide |
| 12/25/1990 | US4980146 Combined hydrolysis and hydrogenation to convert to hydrogen sulfide and water vapor, cooling and catalytic oxidation, cooling and separating sulfur |
| 12/25/1990 | US4980032 Two-stage, vacuum; the first first removes low boiling fractions and retard loss of acid by reflux; wate acid from semiconductor processing |
| 12/20/1990 | DE3919908A1 Improving claus reactor output - by adding ammonia to hydrogen sulphide feed gas before initial partial combustion stage |
| 12/19/1990 | EP0402507A1 Method of improving handling characteristics of froth of elemental sulfur particles |
| 12/18/1990 | US4978519 Process for producing elemental sulphur |
| 12/18/1990 | CA1277822C Electrically heated fluidised bed reactor and processes employingsame |
| 12/14/1990 | EP0410977A4 Economic recovery and utilization of boiler flue gas pollutants. |
| 12/12/1990 | CN1047631A Removal of hydrogen sulfide with on site generated sulfite |
| 12/11/1990 | US4976937 Adding mixture of calcium thiosulfate and calcium polysulfides to recycle tank |
| 12/11/1990 | US4976935 Regeneration of solvent in H2 S removal from gases |
| 12/06/1990 | WO1990015021A1 Purification of elemental sulphur |
| 12/05/1990 | EP0400836A1 Coal fired power plant with pollution control and useful byproducts |
| 12/04/1990 | US4975264 Process for purifying flue gases containing sulfur dioxide |
| 12/04/1990 | CA1277250C Gas conditioning for an electrostatic precipitator |
| 12/01/1990 | CA2018008A1 Removal of hydrogen sulfide with on site generated sulfite |
| 11/28/1990 | EP0399780A1 Method for re-use of aqueous co-product from manufacture of sodium dithionite |
| 11/28/1990 | EP0399209A1 Process for the preparation of sodium monosulphide |
| 11/28/1990 | EP0399208A1 Process for the preparation of sodium monosulphide |
| 11/28/1990 | EP0399185A1 Process for removing sulfur from organic sulfides |
| 11/28/1990 | EP0398952A1 Composition, method and apparatus for removal of hydrogen sulfide |
| 11/28/1990 | CN1047219A Low-temp. desulfurizer for removing organic sulfur in gas |
| 11/27/1990 | US4973570 Vanadium pentaoxide, potassium salt on diatomeaceous earth carrier |
| 11/27/1990 | US4973471 Method for producing dust-free sodium dithionite |
| 11/24/1990 | CA2013951A1 Process for removing sulfur from organic sulfides |
| 11/23/1990 | CA2016353A1 Method for re-use of aqueous co-product from manufacture of sodium dithionite |