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)
12/1981
12/15/1981US4305827 Heavy metal adsorbents of high selectivity, process for production of same, and adsorption process
12/15/1981CA1114174A1 Recovery of elemental sulfur and metal values from tailings from copper recovery processes
12/08/1981US4304759 Process for obtaining metal oxide and SO2 -containing gases essentially free of SO3 and H2 SO4 from ferrous sulphate containing salt
12/08/1981US4304570 Method of separation of sulfur from a scrubbing liquid
12/02/1981EP0040892A1 A regenerable process for the selective removal of sulfur dioxide from effluent gases
12/01/1981US4303633 Method of recovering elemental sulfur from reactive gases containing sulfur dioxide and hydrogen sulfide
12/01/1981CA1113258A1 Method for controlling the heat content and evening out temperatures in various sulfidizing processes
11/1981
11/24/1981US4302434 Thermal cracking
11/24/1981US4302425 Apparatus and process for flue gas desulphurization
11/24/1981US4302221 Process for regeneration of carbonaceous adsorbent for use in desulfurization of exhaust gas
11/24/1981US4302218 Adsorption, donversion to hydrogen sulfide
11/18/1981EP0039866A2 Process for the dissociation of iron sulfate and sulfuric acid, and application of rubber scraps thereto
11/17/1981CA1112423A1 A process for the conversion of soluble thiosulfate in an effluent liquor to sulfates
11/12/1981WO1981003166A1 Method of obtaining sulphur trioxide
11/10/1981US4299811 With inorganic phosphorus compounds, urea or urea derivatives
11/10/1981US4299634 Portland cements
11/04/1981EP0039266A1 Oxidation process of hydrogen sulfide and organic compounds of sulfur
11/03/1981US4298379 From solution of mixed metal sulfates containing boron and silicon impurities
10/1981
10/29/1981WO1981003063A1 Distillative separation of carbon dioxide from hydrogen sulfide
10/28/1981EP0038779A1 Process for the enrichment of SO2 separated from waste gases
10/28/1981EP0038741A1 Preparation process for catalysts or catalyst supports made of titanium dioxide and its use in the Claus catalysis
10/28/1981EP0038686A2 Distillative separation of carbon dioxide from hydrogen sulfide
10/27/1981CA1111592A1 Plasticized sulfur composition
10/21/1981EP0037883A1 Process for the separation of sulphuric acid from the sulfoxidation product obtained by reacting paraffins with sulphurous anhydride, oxygen and water in the presence of ultraviolet light
10/20/1981US4296088 Circulating liquid
10/20/1981US4296075 Catalytic conversion of polythionates to thiosulfates, sulfites
10/20/1981CA1110833A1 Regeneration apparatus for producing sulfur dioxide
10/14/1981EP0037508A1 Method for the decrease of corrosion on Pauling boilers
10/13/1981US4294723 Vanadium oxide, potassium sulfate promoter
10/13/1981US4294590 Scrubbing with an absorbants
10/06/1981US4293525 Apparatus for recovering sulfur from gases containing hydrogen sulfide
10/06/1981US4293322 Distillative separation of carbon dioxide from hydrogen sulfide
10/06/1981CA1110039A1 Reduction of ferric chloride
10/06/1981CA1110038A1 Reduction of ferric chloride
10/06/1981CA1110025A1 Granulation of sulfur
09/1981
09/30/1981EP0036411A1 Sulfur oxide removal from gas.
09/29/1981US4292293 Method for the oxidation of water-soluble sulfide compounds to higher oxidation states
09/29/1981US4292016 Apparatus for solidifying molten material
09/29/1981CA1109647A1 Sulfur oxide removal from gas
09/22/1981US4291003 Process for the purification of residual industrial gases containing small quantities of sulfur compounds
09/16/1981EP0035759A1 Process for producing dithionites
09/15/1981US4289738 Multistage absorption with aqueous amine
09/15/1981CA1108823A1 Separation of hydrogen sulfide from fluid streams
09/08/1981US4288421 Absorption into solution of iron chelate and alkali sulfite
09/08/1981CA1108594A1 Method for preparing wetproofed catalyst particles and particles produced thereby
09/08/1981CA1108356A1 Method of treating an alkali metal sulfide liquor
09/02/1981EP0034848A2 A process for combusting ammonia-containing gases which also contain hydrogen sulphide
09/01/1981US4286966 Process for the melting of sulfur
09/01/1981EP0036411A4 Sulfur oxide removal from gas.
08/1981
08/25/1981US4285927 Production of sulfuric acid using a K2 SO4, V2 O5, diatomaceous earth catalyst
08/25/1981US4285917 Method for removal of hydrogen sulfide from sour gas streams
08/25/1981US4285915 Recovery of alkali values from trona ore
08/18/1981US4284530 Vanadium catalyst for sulfur dioxide oxidation; support of silica, alumina, iron
08/18/1981US4284469 Method and apparatus for concentrating a liquid
08/11/1981US4283379 Washing solution of solubilized vanadium, water soluble nonquinone aromatic compounds, thiocyanate ions, and a carboxylate complexing agent
08/11/1981US4283374 Regenerable manganese oxide hot gas desulfurization process
08/11/1981US4283303 Evaporation at low heat under vacuum and cooling promptly
08/11/1981CA1106571A1 Process for the concentration of dilute sulfuric acid solutions
08/06/1981WO1981002153A1 Production of high purity and high surface area magnesium oxide
08/04/1981US4281821 Method of controlling the suction gas pressure of a sulfuric acid plant for treatment of smelter exhaust gas
08/04/1981CA1106348A1 Process for the regeneration of spent aqueous solutions of sodium, potassium and/or ammonium sulfides
08/04/1981CA1106184A1 Benefication method for iron which residues from electrolytic treatment of zinc
08/04/1981CA1106149A1 Process for the elimination of hydrogen sulfide contained in a gaseous mixture
08/04/1981CA1106147A1 Recovering sulfur from gas streams containing hydrogen sulfur
08/04/1981CA1106139A1 Hydrosulfite preparation
07/1981
07/28/1981US4280990 High pressure process for recovery of sulphur from gases
07/28/1981CA1105680A1 Autocirculation process and apparatus
07/28/1981CA1105678A1 Sequential removal of sulfur oxides from hot gases
07/22/1981EP0032454A2 Method and apparatus for concentrating a liquid
07/21/1981US4279882 Catalytic oxidation
07/21/1981CA1105371A1 Flue gas scrubbing additive utilization
07/14/1981CA1104838A1 Leaching of metal sulphides
07/14/1981CA1104792A1 Pollution control system and method for the removal of sulfur oxides
07/14/1981CA1104791A1 Method of preparing sulphur dioxide
07/08/1981EP0031666A1 Process for the manufacture of sulfur dioxide
07/07/1981US4277459 Containing sulfur and organic phosphorus compounds to produce pure crystalline sulfur and liquid fertilizer
07/07/1981US4277458 Catalyst of vanadium and silver oxides
07/07/1981US4277451 Wet process for the desulfurization of exhaust gas
06/1981
06/30/1981US4276224 Anthraquinone sulphonamide compounds and preparation
06/30/1981US4276116 Vacuum evaporation using heat from formation of sulfuric acid; cycles
06/30/1981CA1103899A1 Process for separating so.sub.2 from a current of gas containing the same, and plant for carrying out such process
06/30/1981CA1103898A1 No translation available
06/30/1981CA1103892A1 Method of producing sulphuric acid
06/30/1981CA1103891A1 Hydrosulfite production
06/30/1981CA1103888A1 Production of sodium dithionite from sulfur dioxide, sodium formate and sodium carbonate with minimum solvent
06/23/1981US4275044 Sulfur dioxide disposal system
06/23/1981US4274910 Enamel parts
06/23/1981CA1103427A1 Catalytic incineration of hydrogen sulfide from gas streams
06/17/1981EP0030447A1 High pressure process for recovery of sulphur from gases
06/17/1981EP0030361A1 Process for polishing glass objects by sulphuric and fluorhydric acid
06/16/1981CA1103002A1 Process for treatment of residual gas
06/16/1981CA1102997A1 Method and apparatus for the thermal cracking of sulfuric acid
06/09/1981US4272234 Pelletizing apparatus
06/09/1981CA1102528A1 Hydrogen sulfide abatement in geothermal steam
06/09/1981CA1102527A1 Separation and recovery of elemental sulfur from mineral impurities
06/09/1981CA1102526A1 Process for producing a fuel gas and sulfur from a hydrocarbon fuel
06/03/1981EP0029583A1 Process and apparatus for reprocessing waste sulfuric acid, acid sludges, etc. of various compositions and consistencies
06/02/1981CA1102095A1 Vapor-liquid contacting system
06/02/1981CA1102094A1 Process for removal of hydrogen sulfide from gas streams
06/02/1981CA1102076A1 Solidification of molten sulphur
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