| Patents for C01B 17 - Sulfur; Compounds thereof (11,743) |
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| 09/19/1991 | WO1991013679A1 Bulk gas sorption composition and apparatus |
| 09/17/1991 | US5049370 Solvent extraction |
| 09/17/1991 | US5049198 Calcium sulfate process for the coproduction of Portland cement clinker and concentrated sulfur dioxide adequate to manufacture sulfuric acid |
| 09/11/1991 | CN1013834B Gas conditioning installation with electrostatic precipitator |
| 09/10/1991 | US5047580 Process for the separation of sulfuric acid from aqueous mixtures of paraffin-sulfonic acids |
| 09/10/1991 | US5047222 Process for removing sulfur from sulfur-containing gases: high calcium fly-ash |
| 09/10/1991 | US5047221 Calcium Silicates or Aluminates |
| 09/10/1991 | US5047216 Apparatus for recovering elemental sulphur |
| 09/05/1991 | DE4006665A1 Verfahren zur konditionierung von abfallschwefelsaeure A method of conditioning abfallschwefelsaeure |
| 09/04/1991 | EP0444729A1 Process for regulating the quantity of oxygen to be introduced in a Claus installation |
| 09/04/1991 | EP0444166A1 Disposable oxide carrier for scavenging hydrogen sulfide. |
| 09/04/1991 | CN1054231A Recovery and utilization of waste thiourea dregs |
| 09/04/1991 | CN1054199A Process and device for desnitrate and desulfate of hot waste gases |
| 09/03/1991 | US5045522 Absorption composition comprising zinc titanate for removal of hydrogen sulfide from fluid streams |
| 09/03/1991 | CA1288215C Process for the elimination of sulfur oxides carried in a gas, by means of anabsorbant mass that can be regenerated through a reaction with hydrogen sulfide |
| 09/03/1991 | CA1288211C Process for recycling sulphuric acid containing metal sulphate |
| 08/28/1991 | EP0443905A1 Catalyst for the treatment of exhaust gases and process for the treatment of these exhaust gases |
| 08/28/1991 | CN1054015A Catalysts for treatment of gaseous efflux and process for treatment of gaseous efflux |
| 08/22/1991 | DE4005378A1 Process control in sulphur recovery by Claus process - by measuring hydrogen sulphide sulphide and sulphur di:oxide concn. and correcting combustion air supply |
| 08/22/1991 | CA2035554A1 Method for the automatic control of the rate of supply of oxygen to a claus process plant |
| 08/21/1991 | CN1013572B Process for ditect extracting sulfur element from desulfurization of sulfide mineral |
| 08/20/1991 | US5041275 Reduced acid buildup in moist sulfur during storage |
| 08/20/1991 | CA2036505A1 Gas effluent processing catalysts; processing method |
| 08/14/1991 | WO1991012201A1 Method for desulphurising a gaseous mixture containing h2s and so2 and recovering said compounds in the form of sulphur |
| 08/14/1991 | EP0441146A1 Process for converting carbon disulfide to hydrogen sulfide in hydrogen sulfide/carbon disulfide mixtures |
| 08/14/1991 | CN1013476B Sulfur dioxide removal from gas streams using hydroxyalkyl substituted pipe razinones |
| 08/13/1991 | US5039507 Method for the continuous reduction of sulphur dioxide-containing gases using coal or carbon |
| 08/13/1991 | US5039506 Method of preparing NA2S (I) |
| 08/13/1991 | US5039505 Method of preparing Na2 S (III) |
| 08/13/1991 | US5039337 Process for producing electrolytic lead and elemental sulfur from galena |
| 08/13/1991 | CA1287612C Layered metal chalcogenides containing interlayer chalcogenides and their synthesis |
| 08/13/1991 | CA1287611C Layered metal oxides containing interlayer oxides and their synthesis |
| 08/07/1991 | EP0440516A1 Preparation process for binary sulphur compounds |
| 08/07/1991 | EP0440141A2 Sulfur recovery process for ammonia-containing feed gas |
| 08/07/1991 | EP0440131A2 Dual combustion zone sulfor recovery process |
| 08/07/1991 | EP0439742A1 Process for the preparation of oleum and sulfuric acid |
| 08/07/1991 | CN1053561A Process and apparatus for desulfurization and denitration of waste gas by multi-stage electron beam irradiation |
| 08/06/1991 | US5037629 Process for the selective oxidation of gaseous sulfur-containing compounds, hydrogen sulfide in particular, to form elemental sulfur |
| 08/06/1991 | CA1287285C Method for flocculating suspensions containing swelled layered chalcogenide |
| 08/01/1991 | DE4002465A1 Continuous prodn. of oleum and sulphuric acid by contact process - using added sulphur di:oxide with low nitrogen oxide content to minimise nitrous gas formation |
| 07/30/1991 | US5035810 Process for treating wastewater which contains sour gases |
| 07/29/1991 | CA2034948A1 Process for the production of oleum and sulfuric acid |
| 07/25/1991 | WO1991010617A1 Conversion of h2s to sulfur |
| 07/25/1991 | DE4001604A1 Waste gas desulphurisation - using recirculated scrubbing liq. regenerated with barium or strontium cpds. |
| 07/24/1991 | CN1053220A Combined non-steady state so2 converter |
| 07/24/1991 | CN1013246B Catalyst for the selective oxidation of sulfur containing compounds in particular hydrogen sulfide to elemental sulfur, and its process and use |
| 07/23/1991 | US5034369 Novel catalysts for the treatment of gaseous effluents containing oxidizable sulfur pollutants |
| 07/23/1991 | US5034210 Method of reducing ethylene oxide emissions |
| 07/23/1991 | US5034202 Removal of thiosulfate from hydrosulfite solutions |
| 07/23/1991 | CA1286482C Two reactor high-recovery sulfur plant and process |
| 07/23/1991 | CA1286481C Method for controlling claus furnace with variable hydrocarbon feed composition |
| 07/18/1991 | DE4000609A1 Catalyst for oxidising sulphur di:oxide to tri:oxide - has silica support with specified pore dia. distribution impregnated with activator |
| 07/17/1991 | EP0436890A1 Sulphur dioxide removal from flue gases with sulphite oxidation inhibition |
| 07/16/1991 | US5032374 Sulfiding |
| 07/16/1991 | US5032373 Apparatus and process |
| 07/16/1991 | US5032218 Purification, distillation, condensation |
| 07/11/1991 | WO1991009809A1 Raw meals for hydrated sulphate of gypsum processing |
| 07/10/1991 | CN1052831A Enclosed purification process by water-washing in production of sulphuric acid |
| 07/09/1991 | US5030438 Catalytic removal of hydrogen sulfides from liquid sulfur |
| 07/09/1991 | US5030437 Selenide and/or sulfide salt mixture; sweetening natural gas |
| 07/09/1991 | US5030436 Spent acid purification process |
| 07/09/1991 | US5030428 Process of purifying flue gases |
| 07/03/1991 | EP0435299A1 Process for recovering sulphur from hydrogen sulphide containing gases |
| 07/03/1991 | EP0434686A1 Removal of nitric oxide from waste gases and recovery as nitric acid. |
| 07/02/1991 | US5028409 Method and apparatus for recovering sulfur from gases containing hydrogen sulfide |
| 07/02/1991 | US5028396 Corrosion resistant wrought austenitic steel |
| 07/02/1991 | US5028343 Inhibit Loss Of Catalytic Activity In Storage For An Amine-Mercaptan Mixture |
| 06/30/1991 | CA2027764A1 Sulfur recovery process |
| 06/25/1991 | US5026535 Method for decoloring sulphuric acid deriving from acid production processes |
| 06/25/1991 | US5026528 Moveable bed of metal oxide reacts to form metal sulfide which is oxidized to reuseable metal oxide; process control of oxygen concentration and heat of exothermic reaction |
| 06/25/1991 | US5026503 Composition and method for removing hydrogen sulfide from gas streams |
| 06/25/1991 | CA1285119C Temperature moderation with water of an oxygen enriched claus sulfur plant |
| 06/23/1991 | WO1991009665A1 Method and apparatus for treating exhaust gas by multi-stage irradiation with electron beam |
| 06/22/1991 | WO1991009810A1 Process of reclaiming battery acid from lead acid batteries |
| 06/13/1991 | WO1991008039A1 Dual impeller method and apparatus for effecting chemical conversion |
| 06/12/1991 | CN1052092A Process for comprehensive utilization of acid dregs |
| 06/11/1991 | US5023069 Containing hydrogen sulfide and suldur dioxide with a catalyst-adsorbent |
| 06/11/1991 | US5022332 Combustion method for improved endothermic dissociation |
| 06/06/1991 | WO1991008038A1 Method and apparatus for effecting gas-liquid contact |
| 06/05/1991 | EP0429933A1 Process for the recovery of sulphuric acid |
| 06/05/1991 | EP0429609A1 Purification of elemental sulphur. |
| 06/05/1991 | CA2004653A1 Dual impeller method and apparatus for effecting chemical conversion |
| 06/04/1991 | US5021586 Dithiophenylpyrrole derivative monomers for preparing semi-conducting polymers |
| 06/04/1991 | US5021232 Using Claus reaction and crystallization to separate sulfur compounds from the tail gas |
| 06/04/1991 | US5021163 Catalytic destruction of sulfur-oxygen anions |
| 05/30/1991 | WO1991007360A1 Process for the production of cement clinker and sulphur dioxide recovery |
| 05/29/1991 | CN1051711A Process for preparation of large grain ammonium sulfate |
| 05/28/1991 | US5019364 Method for purifying gaseous hydrides |
| 05/28/1991 | US5019361 Removal and recovery of sulphur dioxide from gas streams |
| 05/28/1991 | US5019246 Frothing procedure using polymeric sulfide mineral depressants |
| 05/25/1991 | CA2030655A1 Process for the recovery of sulfuric acid |
| 05/22/1991 | EP0428194A1 Process for treating Jarosite containing residues |
| 05/22/1991 | EP0398952A4 Composition, method and apparatus for removal of hydrogen sulfide |
| 05/14/1991 | US5015460 Multistage sulfur recovery and plants designed for the claus process |
| 05/14/1991 | US5015459 Multistage, catalytic Claus process for sulfur production |
| 05/14/1991 | US5015458 Method for purifying sulfuric acid solutions |
| 05/14/1991 | US5015360 Catalytic hydrocracking with chromium, tungsten, iron cobalt and nickel on silicates or silica |
| 05/08/1991 | EP0426649A1 Process for the stepwise electrodialysis of alkali sulfate-containing aqueous solutions and apparatus for carrying out the process |
| 05/07/1991 | US5013337 Process for separating a mixture of molecular species using crystalline microporous metal sulfide compositions |
| 05/02/1991 | EP0425000A1 Process for the concentration of sulphuric acid and water containing fluid |