| Patents for C01B 17 - Sulfur; Compounds thereof (11,743) |
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| 08/18/1994 | DE4322629C1 Process for producing granules (pellets) from molten products |
| 08/18/1994 | DE4304143A1 Process for purifying waste air, in particular from cellulose staple fibre works, by recovery of CS2 and H2S |
| 08/16/1994 | US5338778 Iron chelate compound and water soluble anionic polymer |
| 08/16/1994 | US5338521 Process for reversibly absorbing acid gases from gaseous mixtures |
| 08/11/1994 | DE4402311A1 Process for improving the filtration of sulphur-containing suspensions |
| 08/09/1994 | US5336479 Rapid mixing of aqueous stream containing sodium borohydride and sodium hydroxide with second aqueous stream containing sodium bisulfite and sulfur dioxide or one containing sulfuric acid and sodium bisulfite |
| 08/04/1994 | WO1994016991A1 Stable sulfide compositions, uses, and process for preparation thereof |
| 08/04/1994 | WO1994016990A1 Method for removing sulfide with catalytic carbon |
| 08/04/1994 | CA2131987A1 Method for removing sulfide with catalytic carbon |
| 08/02/1994 | US5334363 Process for recovering sulfur and hydrogen from hydrogen sulfide |
| 08/02/1994 | US5334359 Apparatus for production of sparingly water-soluble salt crystal grains |
| 08/02/1994 | CA1331081C Process for the elimination of sulfurated compunds contained in some waste gases, including those of claus sulfur plants, and the recuperation of said compounds as sulfur |
| 07/26/1994 | CA1330867C Handling characteristics of froth of elemental sulfur particles |
| 07/22/1994 | WO1993014026A1 Method and apparatus for desulfurization of a gas |
| 07/22/1994 | CA2127884A1 Method and apparatus for desulfurization of a gas |
| 07/21/1994 | WO1994015874A1 Stabilized sodium dithionite |
| 07/21/1994 | CA2153058A1 Stabilized sodium dithionite |
| 07/19/1994 | US5330708 In particular, metal-semiconductor phase transition with hysteresis as a function of temperature |
| 07/13/1994 | EP0518887B1 Process for conditioning waste sulphuric acid |
| 07/13/1994 | EP0477338B1 Process for the treatment of water containing sulphur compounds |
| 07/12/1994 | US5328677 Recovery of sulfides from tannery waste liquor |
| 07/12/1994 | US5328673 Process for removal of NOx and SOx oxides from waste gases with chloric acid |
| 07/12/1994 | US5328563 Method of treating material containing sodium sulphate and/or sodium carbonate in a pulp mill |
| 07/07/1994 | WO1994014703A1 Method for desulfurizing a gas |
| 07/06/1994 | CN1088886A Process and apparatus for preparing sulfur |
| 06/30/1994 | DE4243763A1 Raw powder mixt |
| 06/28/1994 | US5324500 Method for processing residues of barium sulfide or strontium sulfide leaching |
| 06/28/1994 | US5324499 Adding silica to circulating waste sulfuric acid mixture containing hydrogen fluoride yields silicon tetrafluoride |
| 06/23/1994 | WO1994013580A1 Drying and separating process and plant |
| 06/23/1994 | WO1994013579A1 Process for recovery of sulfur from acid gases |
| 06/23/1994 | WO1994013578A1 Method and apparatus for treating a flow of gas containing oxidized sulphur compounds |
| 06/23/1994 | DE4336768A1 Sulphur and nitrogen conversion from oxide to elemental form |
| 06/23/1994 | CA2152079A1 Method and apparatus for treating a flow of gas containing oxidized sulphur compounds |
| 06/22/1994 | CN1088131A Method and system for removing waste gases of high-concentration hydrogen sulfide and carbon disulfide and recoverying sulphur |
| 06/21/1994 | US5321946 Method and system for a condensing boiler and flue gas cleaning by cooling and liquefaction |
| 06/16/1994 | DE4242209A1 Sulphur tri:oxide prodn. by catalytic gas phase oxidn. of sulphur - at relatively temp. using low-alkali then alkali-rich vanadium pent:oxide catalyst for complete combustion with min. nitrogen oxide formation |
| 06/09/1994 | WO1994012431A1 Process for recovering sulfur and hydrogen from hydrogen sulfide |
| 06/09/1994 | WO1994012430A1 Process for desulphurating a h2s-containing crude gas |
| 06/09/1994 | WO1994012429A1 PROCESS FOR REMOVING NOx/SOx OXIDES FROM GASES ______________ |
| 06/09/1994 | DE4311326A1 Removal of metal contaminants, e.g. mercury, from molten sulphur using activated alumina - in packed column, filter or fluidised bed produces almost pure sulphur for e.g. sulphuric acid mfr. |
| 06/09/1994 | CA2149443A1 Process for removing nox/sox oxides from gases |
| 06/08/1994 | EP0599917A1 Production of alkali metal hydroxide and regeneration of pulp liquors |
| 06/01/1994 | EP0454817B1 Process for the production of cement clinker and sulphur dioxide recovery |
| 06/01/1994 | DE4239811A1 Verfahren zur Entschwefelung eines H¶2¶S-haltigen Rohgases Process for desulfurization of a H¶2¶S-containing raw gas |
| 05/31/1994 | US5316683 Metal extraction by ion exchange |
| 05/26/1994 | WO1994011105A1 Process for removing sulphur dioxide from a sulphur dioxide-containing gas stream |
| 05/26/1994 | CA2149677A1 Process for removing sulphur dioxide from a sulphur dioxide-containing gas stream |
| 05/25/1994 | EP0597890A1 Removal of hydrogen sulphide. |
| 05/25/1994 | CN2165918Y SF6 gas recovery filtering unit |
| 05/24/1994 | US5314714 Process for increasing the density and improving the homogeneity of Chevrel phase powders and Chevrel phase wire obtained using said process |
| 05/18/1994 | CN1024524C Method for operation of claus-apparatus |
| 05/18/1994 | CN1024523C Method for operating claus-unit |
| 05/17/1994 | US5312992 Process for removing sulfur from organic sulfides |
| 05/17/1994 | US5312604 Work-up of waste materials from barium or strontium sulfide leaching |
| 05/17/1994 | CA1329582C Acid gas absorbent composition |
| 05/17/1994 | CA1329467C Removal and recovery of sulphur dioxide from gas streams |
| 05/17/1994 | CA1329466C Desulfurization of gypsum |
| 05/11/1994 | CN1086459A Treatment of gas streams |
| 05/04/1994 | CN1086203A Preparation method for low-zinc sodium bisulphite formaldehyde |
| 05/03/1994 | US5308600 Polyether emulsifier |
| 05/03/1994 | US5308587 Cooled sulphur furnace bypass system |
| 05/03/1994 | CA1329005C Method for precipitation of chromium and/or vanadium from waste sulphuric acid from the titanium dioxide production |
| 04/28/1994 | DE4235957A1 Separate removal of sulphur cpds. and carbon di:oxide from gas - by desulphurisation catalytically then with doped activated charcoal and pressure swing adsorption to remove carbon di:oxide |
| 04/27/1994 | CN1024325C Removal and recovery of sulphur dioxide from gas streams |
| 04/26/1994 | US5306477 Use of wrought and cast materials and welding fillers for making and using hot concentrated sulphuric acid or oleum |
| 04/26/1994 | US5306476 Continuous sulfur removal process |
| 04/19/1994 | US5304361 Oxidation of hydrogen sulfide to sulfer dioxide and water, absorption, catalytic reduction of sulfur dioxide |
| 04/14/1994 | WO1994007796A1 Process for the recovery of sulfur from a feedstock |
| 04/13/1994 | EP0591852A1 Product with reduces H2S-content and method for its production |
| 04/12/1994 | US5302361 Removing hydrogen sulfide by oxidizing to elemental sulfur |
| 04/12/1994 | US5302353 Catalytic converter |
| 04/05/1994 | US5300228 Method for separating and recovering an acid |
| 03/30/1994 | EP0589501A2 Process for the production of alkali metal hydroxides and elemental sulfur from sulfur-containing alkali-metal salts |
| 03/30/1994 | CN1084427A Desuiphurisation of waste gases |
| 03/29/1994 | US5298229 Purification of sulfur hexafluoride |
| 03/23/1994 | CN2159392Y Producting apparatus for sulphuric acid for battery cell |
| 03/22/1994 | US5296210 Mixing sodium dithionite with calcium oxide, barium oxide, calcium sulfate/sodium carbonate, silica gel/sodium carbonate, alumina/sodium carbonate or calcium oxide/barium oxide |
| 03/22/1994 | US5296205 Mobile packing elements in both loosely packed bed and fixed packed bed having density such that they float in water |
| 03/16/1994 | EP0587429A1 High yield sodium hydrosulfite generation |
| 03/16/1994 | EP0493589B1 Catalytic destruction of sulfur-oxygen anions |
| 03/15/1994 | US5294428 Double combustion oxygen enhanced sulfur recovery process |
| 03/15/1994 | US5294316 Regenerated cellulose process |
| 03/15/1994 | CA1327694C Conversion of calcium compounds into solid and gaseous compounds |
| 03/10/1994 | DE4230099A1 Regenerating spent sulphuric acid from nitration of aromatic cpds. - esp. alkyl-aromatic cpds. by vacuum evapn. and oxidn. of organic cpds., then concn. at higher temp. using nitric acid for decolourisation |
| 03/08/1994 | US5292492 Recovering sulfur from ammonia acid gas stream |
| 03/08/1994 | US5292440 Removal of hydrogen sulfide from sour water without loss of heavy metal |
| 03/08/1994 | CA1327445C Process for preparing sulfur solvent compositions |
| 03/03/1994 | WO1994005054A1 Process for disposing of sodium-sulphur accumulator cells |
| 03/03/1994 | CA2141575A1 Process for disposing of sodium-sulphur accumulator cells |
| 03/01/1994 | US5290321 Process for preparation of granular μ-sulfur having improved flowability, as a vulcanizing agent of rubber composition |
| 03/01/1994 | CA1327266C Treatment of gases |
| 02/26/1994 | CA2104746A1 Process for the production of alkali metal hydroxides and elemental sulfur from sulfur-containing alkali metal salts |
| 02/22/1994 | US5288309 Flue gas conditioning agent demand control apparatus |
| 02/22/1994 | US5288303 Flue gas conditioning system |
| 02/22/1994 | CA1327114C Method for precipitating and separating metals |
| 02/16/1994 | EP0582632A1 Process and apparatus for removal of h 2?s from gaseous streams using membrane purification of recycle solution |
| 02/16/1994 | EP0504187B1 Dual impeller method and apparatus for effecting chemical conversion |
| 02/15/1994 | US5286697 Iron and/or chromium-containing oxidation catalysts for gas desulfurization |
| 02/15/1994 | US5286466 Multi-bed cocurrent downflow mass transfer column with spherical packing |
| 02/09/1994 | EP0582337A1 Process of removing hydrogen sulphide from a gas mixture |