| Patents for C01B 17 - Sulfur; Compounds thereof (11,743) |
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| 07/01/1997 | US5643548 Drying and separating process and plant |
| 06/28/1997 | CA2193778A1 Removal of metal compounds from an acid solution |
| 06/25/1997 | EP0779879A1 Very high temperature and atmospheric pressure superconducting compositions and methods of making and using same |
| 06/25/1997 | CN1152547A Method for preparing high-pureness carbon dioxide |
| 06/17/1997 | US5640709 Method and apparatus for producing a product in a regenerator furnace from impure waste containing a non-gasifiable impurity |
| 06/17/1997 | US5640706 Pollution control |
| 06/17/1997 | US5639435 Reacting sulfur tetrafluoride with oxygen |
| 06/11/1997 | EP0669854B1 Process for removing sulphur dioxide from a sulphur dioxide-containing gas stream |
| 06/10/1997 | US5637220 Oxidizing sulfides to sulfur using sulfide-oxidizing bacteria |
| 06/05/1997 | WO1997019891A1 Novel catalyst for the oxidation of sulfides |
| 06/04/1997 | EP0688238B1 Method and apparatus for cleaning flue gas |
| 05/29/1997 | WO1997019019A1 Method and catalyst for catalytically oxidising a low concentration of h2s in a gas to give sulphur |
| 05/28/1997 | CN1150792A Anaerobic removal of sulphur compounds from waste water |
| 05/27/1997 | US5632967 Process for the high pressure degassing of hydrogen sulfide from liquid sulfur |
| 05/22/1997 | WO1997018028A1 Gas treating process |
| 05/22/1997 | CA2230849A1 Gas treating process |
| 05/20/1997 | US5630931 Process for the hydrometallurgical and electrochemical treatment of the active mass of exhausted lead batteries, to obtain electrolytic lead and elemental sulphur |
| 05/15/1997 | WO1997017284A1 Method for oxidising h2s to sulphur |
| 05/15/1997 | WO1997017283A1 Method for removing virtually all the sulphur compounds h2s, so2, cos and/or cs2 from sulphur plant waste gases, and recovering such compounds as sulphur |
| 05/14/1997 | EP0772569A1 Catalytic desulphurization process for a gas containing h 2?s and so 2? compounds, and catalyst for implementing said process |
| 05/14/1997 | EP0772485A1 Desulfurization of incondensible gases from the vacuum distillation of crude oil |
| 05/13/1997 | US5628977 Process for the desulfurization of a crude gas containing H2 S |
| 05/13/1997 | US5628976 Injection of dewatered biosolids into dissociation furnace, air enriched to contain oxygen |
| 05/13/1997 | US5628974 Process for treating by-products of lithium/sulfur hexafluoride |
| 05/07/1997 | EP0663850B1 Method for removing hydrogen sulphide from mixture gas containing hydrogen sulphide and excessive amounts of steam and ammonia |
| 05/06/1997 | US5626667 Process and apparatus for producing SO2 -containing gas and cement clinker from waste gypsum |
| 05/06/1997 | US5626023 Cryogenic rectification system for fluorine compound recovery using additive liquid |
| 04/29/1997 | US5624653 Method for producing sulphur trioxide |
| 04/29/1997 | US5624648 Method and apparatus for cleaning flue gas |
| 04/23/1997 | EP0769472A1 Cofiring biosolids in a spent sulfuric acid regeneration facility |
| 04/23/1997 | EP0740580A4 Desulfurizing a gas stream |
| 04/23/1997 | EP0616672B1 Treatment of liquid waste material |
| 04/23/1997 | CN1148040A Recovery and treatment of mother solution of mono sodium 2-naphthylamine-5,7 disulfonic acid |
| 04/18/1997 | CA2187609A1 Cofiring biosolids in a spent sulfuric acid regeneration facility |
| 04/17/1997 | WO1997013567A1 Extraction method |
| 04/17/1997 | CA2231657A1 Extraction method |
| 04/16/1997 | CN1147477A Continuous prodn equipment for liquid SO3 and 65% SO3 fuming sulfuric acid utilizing afterheat in converted gas |
| 04/16/1997 | CN1034556C Solution removal of H2S from gas streams |
| 04/10/1997 | WO1997007051A3 Sealed observation element for sulfur recovery unit |
| 04/09/1997 | EP0766650A1 Anaerobic removal of sulphur compounds from waste water |
| 04/08/1997 | US5618658 With ammonium carbonate and sodium sulfite; photographic fixing |
| 04/08/1997 | US5618507 Process for removing SO2 from gases which contain it, with direct production of elemental sulfur |
| 04/08/1997 | US5618471 Alkali metal quaternary chalcogenides and process for the preparation thereof |
| 04/03/1997 | WO1997012082A1 Preparation of a semiconductor thin film |
| 04/03/1997 | WO1997011906A1 Sulfur recovery process using sulfur debonding agent |
| 04/03/1997 | CA2226220A1 Sulfur recovery process using sulfur debonding agent |
| 04/02/1997 | CN1146424A Insoluble sulphur preparation method and production device |
| 04/01/1997 | CA2035093C Sulfur recovery process for ammonia-containing feed gas |
| 03/27/1997 | WO1997011028A1 Process for the high pressure degassing of hydrogen sulfide from liquid sulfur |
| 03/27/1997 | WO1997010895A2 Sulfur dioxide reduction catalyst |
| 03/26/1997 | CN1145875A Prepn. of hydrogen sulfide and magnesium hydroxide with magnesic bittern and concentrated basic sulphide bittern as material |
| 03/25/1997 | US5614128 Nonlinear optical transmission |
| 03/22/1997 | CA2160401A1 Stabilization of catalyzed aqueous sulfite and bisulfite ion solutions |
| 03/20/1997 | WO1997010175A1 Process for preparing a nanocrystalline material |
| 03/20/1997 | WO1997010174A1 Method and apparatus for degassing sulfur |
| 03/19/1997 | EP0762990A1 Process for burning of sulfur |
| 03/19/1997 | EP0762930A1 Absorbent and process for removing sulfur oxides from a gaseous mixture |
| 03/12/1997 | EP0761287A2 Process for recovering waste gases of a glass melting furnace |
| 03/12/1997 | EP0669896A4 PROCESS FOR REMOVING NOx/SOx OXIDES FROM GASES --------------. |
| 03/12/1997 | EP0597890B1 Removal of hydrogen sulphide |
| 03/12/1997 | CN1144782A Oxydation removing hydrogen sulfide technology in methane-generating pit |
| 03/11/1997 | US5609845 Catalytic production of hydrogen from hydrogen sulfide and carbon monoxide |
| 03/11/1997 | US5609841 Method and apparatus for treating a flow of gas containing oxidized sulphur compounds |
| 03/05/1997 | CN1144321A Cryagenic rectification system for fluorine compound recovery |
| 03/05/1997 | CN1144189A Catalyst containing vanadium for producing sulfuric acid and preparation method thereof |
| 03/04/1997 | US5608130 Methods for the synthesis of chemical compounds |
| 03/04/1997 | US5607657 Desulfurization in claus process forming hydrogen sulfide |
| 03/04/1997 | US5607011 Reverse heat exchanging system for boiler flue gas condensing and combustion air preheating |
| 03/04/1997 | CA2043539C Monolithic catalysts for conversion of sulfur dioxide to sulfur trioxide |
| 02/27/1997 | WO1997007055A1 Improved sulfur separation system |
| 02/27/1997 | WO1997007051A2 Sealed observation element for sulfur recovery unit |
| 02/26/1997 | EP0759321A1 Process for cleaning an exhaust gas containing sulphur compounds uing an active carbon |
| 02/26/1997 | CN1143606A Amorphous sodium silicate-metal sulfate composite powder |
| 02/18/1997 | US5604173 Desulfurization of sulfur compound-containing gases with vanadium catalysts |
| 02/18/1997 | US5603913 Vapor phase; mixed oxide catalyst |
| 02/18/1997 | US5603839 Process for the recovery of waste sulphuric acid |
| 02/18/1997 | CA2099149C Removal of hydrogen sulfide |
| 02/13/1997 | WO1997005059A1 Device and process for conditioning a liquid |
| 02/13/1997 | WO1997004867A1 Catalyst for use in obtaining sulphur by the claus process and a process for manufacturing the same |
| 02/06/1997 | WO1997003920A1 Claus sulphur production process and installation |
| 02/05/1997 | CN2246655Y Up-tube-type acid distributor |
| 01/29/1997 | CN1141208A Process for desulfurizing H2S-containing gas |
| 01/28/1997 | CA2104488C High yield sodium hydrosulfite generation |
| 01/22/1997 | EP0705060A4 Regeneration of sulfuric acid from sulfate by-products of 2-hydroxy-4-(methylthio)butyric acid manufacture |
| 01/22/1997 | EP0702663B1 Process for purifying sulphide-containing waste water |
| 01/22/1997 | EP0429609B1 Purification of elemental sulphur |
| 01/21/1997 | US5595713 Purification of flue gas to prevent air pollution by forming acids |
| 01/21/1997 | CA2043389C Method of removing hydrogen sulfide from liquid sulfur |
| 01/21/1997 | CA2035110C Dual combustion zone sulfur recovery process |
| 01/16/1997 | WO1997001511A1 Improved method for increasing the production capacity of sulfuric acid plants and processes |
| 01/16/1997 | WO1997001510A1 Process for the realization of endothermic reactions for the thermal decomposition of solids, producing gases and solid residues |
| 01/15/1997 | EP0640058B1 Method for removing hydrogen sulphide from a gas and recovering in the form of sulphur |
| 01/14/1997 | US5593652 Method for increasing the production capacity of sulfuric acid plants and processes |
| 01/14/1997 | US5593651 Absorption of gaseous effluents in ammonium, alkali metal or alkaline earth metal sulfites and bisulfites |
| 01/14/1997 | CA2014628C Spent alkylation acid treatment process |
| 01/09/1997 | WO1997000714A1 Liquid medium extraction purification method |
| 01/08/1997 | CN2244556Y Improved spherical arch |
| 01/07/1997 | US5591419 Oxidation-reduction process |
| 01/07/1997 | US5591418 Process for removing sulfur oxides or nitrogen oxides from a gaseous mixture |
| 01/07/1997 | US5591417 Combustion, oxidation, adsorption, reduction, regeneration |