Patents
Sitemap › C01 - Inorganic chemistry › C01B - Non-metallic elements; Compounds thereof › C01B 17 - Sulfur; Compounds thereof
Patents for C01B 17 - Sulfur; Compounds thereof (11,743)
12/1989
12/26/1989US4889700 Process and device for selective extraction of H2 S from an H2 S-containing gas
12/19/1989US4888162 Temperature moderation with water of an oxygen enriched claus sulfur plant
12/19/1989CA1263908A1 Method of removing sulphur dioxide from a gaseous stream
12/14/1989WO1989012025A1 Condensing sulfuric acid vapours to produce sulfuric acid
12/14/1989WO1989012024A1 Sulfuric acid process and apparatus
12/14/1989WO1989012023A1 Method and apparatus for recovering sulfer from gases containing hydrogen sulfide
12/14/1989WO1989012022A1 Process for improving the sulphur performance of a sulphur production unit using an acid gas containing h2s, said unit comprising a sulphur plant with a downstream purification unit
12/13/1989EP0346218A1 Process for modifying the sulphur yield of a plant producing sulphur from an acid gas containing hydrogen sulphide, whereby a sulphur production plant is followed by a purification unit
12/13/1989EP0345862A2 Process for the removal of hydrogen sulfide from a gas mixture by active carbon
12/13/1989EP0345632A1 Method and apparatus for purifying exhaust gases containing sulfur dioxide
12/12/1989US4886649 Method for the purification of hydrogen sulfide-containing gases
12/12/1989CA1263873A1 Process for the production of nitrobenzene
12/07/1989DE3830390C1 Regenerative SO2 flue gas purification
12/06/1989EP0345136A1 Process for preparing crystals of anhydrous sodium sulfide
12/05/1989US4884396 Desulfurizing agent and process for treating hydrogen sulfide containing gas, coal gasification system and power generation system based on coal gasification using the desulfurizing agent
12/05/1989CA1263517A1 Method for recovering elemental sulfur from coal-gas
11/1989
11/30/1989WO1989011326A1 Process and device for removal of h2s
11/29/1989EP0343418A2 Process for the preparation of titanium dioxide
11/28/1989CA1263218A1 Stabilized water-containing sodium dithionite formulations which have been rendered alkaline
11/21/1989US4881642 Electrostatic charge dissipator and method of making
11/15/1989EP0341572A2 Process for regenerating an absorbent charged with H2S and/or COS
11/14/1989US4880761 Amine templating agent, germanium or tin sulfides, selenides
11/14/1989US4880609 Chelate catalyst system for H2 S removal from a gas stream
11/14/1989US4880606 Method and apparatus for desulfurization of sulfur or hydrogen sulfide-containing gases
11/14/1989US4880542 Biofilter for the treatment of sour water
11/14/1989CA1262812A1 Procedure for the production of potassium sulfate from potassium chloride by means of ion exchangers
11/08/1989EP0340617A2 Apparatus and process for the generation of sulfur trioxide reagent for sulfonation of the surface of polymeric resins
11/08/1989CN1005707B Process for removing nh3 in so2-containing gas
11/02/1989EP0339818A1 Process for the manufacture of hydrogen sulfide
11/02/1989EP0339640A1 Alumina-titania composition
10/1989
10/26/1989DE3812183A1 Process for recovering a dissolved ionic substance
10/25/1989CN1036545A Composition and method for removal of hydrogen sulfide
10/24/1989US4876079 Separation of a mixture of sulfur and alkaline solution and apparatus therefor
10/24/1989US4876075 Removal of H2 S from gas streams
10/19/1989DE3911889A1 Apparatus for producing sulphuric acid by the contact process
10/17/1989US4874589 Washing; pressurized aeration; oxidation
10/17/1989US4874585 Economic recovery and utilization of boiler flue gas pollutants
10/11/1989EP0335987A1 Process for producing chevrel compounds
10/11/1989EP0278539B1 Conditioning method for flue gases containing dust
10/05/1989DE3908715A1 Verfahren zur herstellung von pulverfoermigen hochschmelzenden anorganischen verbindungen und metallischen mischkoerpern Process for the preparation of pulverfoermigen refractory inorganic compounds and metallic mischkoerpern
10/04/1989EP0335441A1 Process for the purification of flue gases
10/03/1989US4871521 Sulfur recovery process using metal oxide absorbent with improved purge
10/03/1989US4871373 Continuous preparation of solutions of low viscosity solvents and high viscosity, pasty products
09/1989
09/27/1989CN1035808A Enclosed sulphur extracting method
09/27/1989CN1035780A Sulfur dioxide removal from gas streams using hydroxyalkyl substituted piperazinones
09/26/1989US4869893 Preparation of high purity compounds of sulfur, selenium, and tellurium
09/26/1989CA1261591A1 Process for the removal of nitrogen oxides and sulphur oxides from flue gases
09/26/1989CA1261118A1 High pressure process for sulfur recovery from a hydrogen sulfide containing gas stream
09/26/1989CA1260230A1 Method and apparatus for melting sulfur in aqueous slurries
09/26/1989CA1259887A1 Process for cleaning vessels containing sulfur dichloride
09/26/1989CA1259775A1 Purification and reconcentration of waste sulphuric acid
09/21/1989WO1989008498A1 Economic recovery and utilization of boiler flue gas pollutants
09/21/1989DE3900393A1 Process for removing carbonyl sulphide from gases
09/20/1989EP0333084A2 Method for preparing gaseous fluorides
09/20/1989CN1035645A Circulating utilization of sulphuric acid after nitrifying aromatic hydrocarbon
09/20/1989CN1035624A Integrated process for removal of sulfur compounds from fluid streams
09/19/1989US4867961 Absorption by magnesium oxide slurry, reaction with sulfuric acid
09/13/1989EP0332373A2 Process for removing sulfur moieties from claus tail-gas
09/13/1989CN1035443A Process for removing h2s from gas stream
09/08/1989WO1989007973A1 Process for purifying aqueous buffer solutions
09/06/1989EP0331228A2 Process for removing H2S from a gas stream
09/05/1989US4863645 Apparatus and process for producing particulate sulfur
08/1989
08/31/1989DE3841787A1 Process for removing hydrogen sulphide from industrial gases
08/30/1989CN1035063A Catalyst for treatment of flue gas, and process for treatment of flue gas
08/29/1989US4861577 Method for removing the sulphur content of a weak gas containing sulfur dioxide
08/29/1989US4861576 Method for reducing corrosion in a bypass system
08/23/1989EP0328820A2 Treatment of gas streams comprising hydrogen sulphide
08/23/1989CN1034903A Method of recovering the sulfuric acid from the waste sulfuric acid containing organic compound
08/22/1989US4859648 Layered metal chalcogenides containing interspathic polymeric chalcogenides
08/22/1989US4859447 Process for the production of sodium hydrosulfite
08/22/1989US4859441 Process for the preparation of uranium tetrafluoride by the reduction of uranium hexafluoride and sulphur fluorides produced by this process
08/22/1989US4859437 Process for the removal of H2S from fluid streams using a water soluble polymeric chelate of an oxidizing polyvalent metal
08/15/1989US4857297 Process for the reduction of the sulfur content in a gaseous stream
08/15/1989US4857296 CeO catalytic desulfurization of industrial gases
08/15/1989US4857285 Method and system for removal of sulfur compounds from gases and for regenerating spent sorbents
08/15/1989US4857281 Pauling boiler and process for the concentration of sulphuric acid
08/09/1989EP0326914A1 Process for preparing sodium polysulphides from elementary sodium and sulphur
08/08/1989US4855124 Continuous addition of hydrogen sulfide and sulfur dioxide to water yields sulfur which can be burned; claus reaction
08/08/1989US4855123 With oxygen using specific activated carbon catalyst
08/08/1989US4855113 Apparatus for removing sulfur from organic polysulfides
08/08/1989CA1258158A1 Separation of a mixture of sulfur and alkaline solution and apparatus therefor
08/03/1989DE3802236A1 Mixture of material for producing a metal chalcogenide and use of such a mixture
08/01/1989US4853206 Treatment of waste material
08/01/1989US4853192 Saturating stream of inert gas with excess water
08/01/1989CA1258036A1 Filter screen for the air outlet of an apparatus for producing solid sulphur particles
07/1989
07/27/1989WO1989006864A1 Process for increasing the density and improving the homogeneity of chevrel phase powders and chevrel phase wire obtained using said process
07/27/1989WO1989006675A1 Composition, method and apparatus for removal of hydrogen sulfide
07/27/1989DE3801335A1 Method for reprocessing residual liquors which contain sulphur compounds
07/26/1989EP0325522A1 Process and apparatus for cleaning gaseous effluents containing hydrogen sulphide
07/26/1989EP0325287A2 Dual combustion zone sulfur recovery process
07/26/1989EP0325286A2 Sulfur recovery process for ammonia-containing feed gas
07/26/1989EP0325214A1 Process for preparing a vanadium-based, high density, medium-porosity catalyst supported on a siliceous matrix
07/26/1989EP0325213A1 High-density, medium-porosity catalyst supported on a siliceous matrix and based on vanadium, iron, oxygen and alkali metal
07/26/1989EP0324753A1 Process for manufacturing a calcium sulphate-containing solid secondary raw material.
07/26/1989CN1034198A Acid gas absorbent composition
07/26/1989CN1034181A Process of removing hydrogen sulfide from exhaust gas
07/25/1989US4851202 Process for the simultaneous removal of nitrogen oxides and sulfur dioxide from an oxygen-containing exhaust gas
07/25/1989US4851197 Apparatus for the continuous reduction of sulphur-containing gases
07/25/1989US4851152 Prevention of formation of nickel subsulfide in partial oxidation of heavy liquid and/or solid fuels
07/25/1989CA1257765A1 Process of removing arsenic from waste sulfuric acid
1 ... 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 ... 118