Sulfur Compounds thereof

CCHEMISTRY METALLURGY C01Inorganic chemistry C01BNON-METALLIC ELEMENTS COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C

C01B17/00Sulfur Compounds thereof

C01B17/02Preparation of sulfur Purification C01B17/0205Separation of sulfur from liquids C01B17/021Separation of sulfur from gases C01B17/0216Solidification or cooling of liquid sulfur C01B17/0221Melting C01B17/0226Vaporising or superheating C01B17/0232Purification C01B17/0237Converting into particles C01B17/0243Other after-treatment of sulfur C01B17/0248of particulate sulfur C01B17/0253from non-gaseous sulfur compounds other than sulfides or materials containing such sulfides C01B17/0259by reduction of sulfates C01B17/0264of calcium sulfates C01B17/027Recovery of sulfur from material containing elemental sulfur C01B17/033using a liquid extractant C01B17/04from gaseous sulfur compounds including gaseous sulfides C01B17/0404by processes comprising a dry catalytic conversion of hydrogen sulfide-containing gases C01B17/0408Pretreatment of the hydrogen sulfide containing gases C01B17/0413characterised by the combustion step C01B17/0417Combustion reactors C01B17/0421Multistage combustion C01B17/0426characterised by the catalytic conversion C01B17/043Catalytic converters C01B17/0434Catalyst compositions C01B17/0439at least one catalyst bed operating below the dew-point of sulfur C01B17/0443in a moving bed C01B17/0447Separation of the obtained sulfur C01B17/0452Process control; Start-up or cooling-down procedures of the Claus process C01B17/0456the hydrogen sulfide-containing gas being a Claus process tail gas C01B17/046without intermediate formation of sulfur dioxide C01B17/0465Catalyst compositions C01B17/0469at least one catalyst bed operating below the dew-point of sulfur C01B17/0473by reaction of sulfur dioxide or sulfur trioxide containing gases with reducing agents other than hydrogen sulfide C01B17/0478with hydrocarbons or mixtures containing them C01B17/0482with carbon or solid carbonaceous materials C01B17/0486with carbon monoxide or carbon monoxide containing mixtures C01B17/0491with hydrogen or hydrogen-containing mixtures C01B17/0495by dissociation of hydrogen sulfide into the elements C01B17/05by wet processes C01B17/06from non-gaseous sulfides or materials containing such sulfides C01B17/10Finely divided sulfur C01B17/12Insoluble sulfur (mu-sulfur) C01B17/125Sulfur isotopes other than 32S C01B17/16Hydrogen sulfides C01B17/161Preparation from elemental sulfur C01B17/162from elemental sulfur and hydrogen C01B17/164Preparation by reduction of oxidic sulfur compounds C01B17/165Preparation from sulfides, oxysulfides or polysulfides C01B17/167Separation C01B17/168Purification C01B17/18Hydrogen polysulfides C01B17/20Methods for preparing sulfides or polysulfides, in general C01B17/22Alkali metal sulfides or polysulfides C01B17/24Preparation by reduction C01B17/26with carbon C01B17/28with reducing gases C01B17/30Preparation from sodium or potassium amalgam with sulfur or sulfides C01B17/32Hydrosulfides of sodium or potassium C01B17/34Polysulfides of sodium or potassium C01B17/36Purification C01B17/38Dehydration C01B17/40Making shaped products C01B17/42Sulfides or polysulfides of magnesium, calcium, strontium, or barium C01B17/43from oxides or hydroxides with sulfur or hydrogen sulfide C01B17/44by reduction of sulfates C01B17/45Compounds containing sulfur and halogen, with or without oxygen C01B17/4507containing sulfur and halogen only C01B17/4515containing sulfur and fluorine only C01B17/4523Sulfur tetrafluoride C01B17/453Sulfur hexafluoride C01B17/4538containing sulfur and chlorine only C01B17/4546Sulfur dichloride C01B17/4553Sulfur hexachloride C01B17/4561Compounds containing sulfur, halogen and oxygen only C01B17/4569Thionyl fluoride (SOF2) C01B17/4576Sulfuryl fluoride (SO2F2) C01B17/4584Thionyl chloride (SOCl2) C01B17/4592Sulfuryl chloride (SO2Cl2) C01B17/46Compounds containing sulfur, halogen, hydrogen, and oxygen C01B17/463Fluorosulfonic acid (FSO3H) C01B17/466Chlorosulfonic acid (ClSO3H) C01B17/48Sulfur dioxide Sulfurous acid C01B17/50Preparation of sulfur dioxide C01B17/501by reduction of sulfur compounds C01B17/502of sulfur trioxide C01B17/503of sulfuric acid C01B17/504of ammonium sulfates C01B17/505of alkali metal sulfates C01B17/506of calcium sulfates C01B17/507of iron sulfates C01B17/508by oxidation of sulfur compounds C01B17/52by roasting sulfides C01B17/54by burning elemental sulfur C01B17/56Separation Purification C01B17/58Recovery of sulfur dioxide from acid tar or the like or from any waste sulfuric acid C01B17/585from ammonium sulfate containing sulfuric acid solutions C01B17/60Isolation of sulfur dioxide from gases C01B17/62Methods of preparing sulfites in general C01B17/625metabisulfites or pyrosulfites C01B17/64Thiosulfates Dithionites Polythionates C01B17/66Dithionites or hydrosulfites (S204 2-) C01B17/665Stabilisation by additives subsequent to preparation; Dust prevention by additives C01B17/69Sulfur trioxide Sulfuric acid C01B17/70Stabilisation of gamma-form sulfur trioxide C01B17/74Preparation C01B17/745from sulfates C01B17/76by contact processes C01B17/762High pressure processes C01B17/765Multi-stage SO3-conversion C01B17/7655with intermediate absorption C01B17/77Fluidised-bed processes C01B17/775Liquid phase contacting processes or wet catalysis processes C01B17/78characterised by the catalyst used C01B17/79containing vanadium C01B17/80Apparatus C01B17/803Converters C01B17/806Absorbers; Heat exchangers C01B17/82of sulfuric acid using a nitrogen oxide process C01B17/84Chamber process C01B17/86Tower process C01B17/88Concentration of sulfuric acid C01B17/90Separation Purification C01B17/901Recovery from spent acids containing metallic ions C01B17/902by dialysis C01B17/903by liquid-liquid extraction C01B17/904by ion-exchange C01B17/905Removal of organic impurities C01B17/906Removal of mercury C01B17/907Removal of arsenic C01B17/908Removal of antimony or bismuth C01B17/92Recovery from acid tar or the like C01B17/925by processes involving a liquid-liquid extraction C01B17/94Recovery from nitration acids C01B17/96Methods for the preparation of sulfates in general C01B17/965Pyrosulfates C01B17/98Other compounds containing sulfur and oxygen