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| Number | Title | Issue Date |
| 7871594 | Reactor and method for production of hydrogen sulphide The present invention describes a reactor (1) for continuously preparing hydrogen sulfide H2S from hydrogen and sulfur, comprising a distributor device (15) for distributing gaseous hydrogen in a sulfur melt (9) present at least in a ... | 01/18/2011 |
| 7833508 | Reaction vessel and process for its use The invention relates to a reaction vessel in which hydrogen sulphide is prepared from sulphur and hydrogen, wherein the reaction vessel consists partly or entirely of a material which is resistant to the reaction mixture, its compounds or elements and retains its r... | 11/16/2010 |
| 7833509 | Method and device for the continuous production of hydrogen sulfide The invention relates to a process and to an apparatus for preparing hydrogen sulfide H2S by converting a reactant mixture which comprises gaseous sulfur and hydrogen over a solid catalyst. The reactant mixture is converted at a pressure of from 0.5 to 10... | 11/16/2010 |
| 7485281 | Process for the production of sulfur from sulfur dioxide The reduction of gas streams containing sulfur dioxide to elemental sulfur is carried out by contacting a reducing gas, such as natural gas, methanol or a mixture of hydrogen and carbon monoxide, with recycled sulfur to produce a stream containing hydrogen sulfide t... | 02/03/2009 |
| 7097392 | Free-flowing sulfur transport, storage and use to produce energy, fertilizer or hydrogen without carbon dioxide Elemental sulfur is combined with either liquid anhydrous ammonia, liquid sulfur dioxide, or both to form a solution or slurry which is transportable through pipelines or other transport vessels without a risk of clogging due to the environmental temperature drops t... | 08/29/2006 |
| 7014833 | Process and apparatus for catalytic distillations A process for reacting a first component with itself or a second component to produce a third component in which a first material comprising a first component or said first component and a second component is fed to divided wall column having a catalytic distillatio... | 03/21/2006 |
| 6941742 | Method and device for reducing the number of particles in an exhaust gas To reduce the number of particles in an exhaust gas (A), in particular in the exhaust gas (A) from an internal-combustion engine, sulfur dioxide SO2 which is contained in the exhaust gas (A) is at least partially catalytically oxidized, in the presence of... | 09/13/2005 |
| 6852305 | Process for the production of hydrogen sulphide from elemental sulphur and use thereof in heavy metal recovery A process is provided for the production of hydrogen sulphide from the bacterial reduction of a mixture of a liquid and elemental sulfur with an electron donor, such as hydrogen gas, carbon monoxide or organic compounds. The bacteria may be Desulforomonas sp.... | 02/08/2005 |
| 6676918 | Hydrogen sulfide removal from liquid sulfur A method for removing hydrogen sulfide from liquid sulfur, comprising introducing liquid sulfur containing hydrogen sulfide in an upstream portion of a conduit. The conduit has a fluid outlet in a downstream portion thereof located within a lower portion ... | 01/13/2004 |
| 6372156 | Methods of chemically converting first materials to second materials utilizing hybrid-plasma systems In one aspect, the invention encompasses a method of chemically converting a first material to a second material. A first plasma and a second plasma are formed, and the first plasma is in fluid communication with the second plasma. The second plasma compr... | 04/16/2002 |
| 6342651 | Reductive combustion of ammonium salts of sulfuric acid A process is provided for the combustion of ammonium salts of sulfuric acid contained in aqueous media. More particularly, a reductive combustion process which produces a combustion gas containing a divalent sulfur compound having a high concentration of ... | 01/29/2002 |
| 6315802 | H2S production from a molten metal reactor Hydrogen sulfide is produced by charging a sulfur containing feed to a molten metal bath containing over 3 wt. % dissolved carbon. Allowing dissolved carbon levels to build up in the bath, preferably by controlling oxygen addition to ensure a large invent... | 11/13/2001 |
| 6284214 | Low or no slag molten metal processing of coke containing vanadium and sulfur A process for recovering and purifying vanadium found in petroleum coke is disclosed. Coke containing V and sulfur is charged to a molten metal bath and dissolved to form a molten metal bath with dissolved carbon, dissolved V metal and dissolved sulfur. A... | 09/04/2001 |
| 5976868 | Process for the treatment of gases An installation and a method are described for the treatment of a gas containing hydrogen sulphide, the gas (1) being washed in a first gas scrubber (5) with an alkaline wash liquid and the spent wash liquid (4) being treated in an aerobic reactor (6) wit... | 11/02/1999 |
| 5744117 | Feed processing employing dispersed molten droplets A method and an apparatus produce a product in at least one phase from an organic component in a feed gas stream. The method includes forming a process zone including a process molten bath and a process gas space disposed over the process molten bath. Mol... | 04/28/1998 |
| 5686056 | Methods and apparatus for purifying hydrogen sulfide The invention provides methods for purifying hydrogen sulfide gas having impurities therein. In one exemplary method, the hydrogen sulfide gas is purified by passing the gas through a filter media, with at least some of the impurities being trapped within... | 11/11/1997 |
| 5635147 | Process of treating the gasification residue formed by the gasification of solid fuels in a fluidized bed In addition to ash and coke, the gasification residue contains alkaline earth metal sulfide and alkaline earth metal oxide because desulfuring agents have been supplied to the gasifier. At temperatures from 5° to 80° C. the gasification residue is mixed... | 06/03/1997 |
| 5628974 | Process for treating by-products of lithium/sulfur hexafluoride A process is provided for treating the solid reaction by-products of lith and sulfur hexafluoride. Lithium in the by-product solid waste is converted to lithium hydroxide. Lithium sulfide in the by-product is converted to lithium hydroxide. Lithium sulfi... | 05/13/1997 |
| 5466427 | Catalysis and treatment of gases with the catalysts This invention relates to novel cobalt and molybdenum promoted titania and nickel and molybdenum promoted titania catalysts, and molybdenum promoted titania catalysts containing mixtures of cobalt and nickel. The invention also relates to a process for us... | 11/14/1995 |
| 5328677 | Recovery of sulfides from tannery waste liquor An apparatus and process for the removal and recovery of sulfides from tannery waste water or liquor. The apparatus comprises a closed vessel, the sulfide-bearing liquor is introduced into a first or acidulation zone of the vessel and mixed with acid to d... | 07/12/1994 |
| 5308456 | Molten carbonate fuel cell sulfur scrubber and method using same Sulfur compounds poison catalysts, such as the anode catalysts and reformer catalysts within molten carbonate fuel cell systems. This poisoning is eliminated using a sulfur scrubber 29 located prior to the inlet of the cathode chamber 13. Anode exhaust 19... | 05/03/1994 |
| 5298228 | Method and apparatus for treating hydrocarbon gas streams contaminated with carbonyl sulfide An improved method of reducing the concentration of carbonyl sulfide in a hydrocarbon gas containing carbonyl sulfide, which method comprises (a) feeding the hydrocarbon gas containing carbonyl sulfide to a hydrolysis section to contact the hydrocarbon ga... | 03/29/1994 |
| 5279801 | Production of binary rare earth/sulfur or transition metal/sulfur compounds Binary rare earth/sulfur or transition metal/sulfur compounds, e.g., the higher sulfides or sesquisulfides of the rare earths, are prepared by confinedly reacting either a rare earth compound, e.g., an oxide, carbonate or hydroxide, or a transition metal ... | 01/18/1994 |
| 5215728 | Method and apparatus for removal of h2s from a process gas, including thiosulfate and/or cyanide salt decomposition A method and apparatus for the hydrothermal treatment of a catalytic polyvalent metal redox absorption solution, after absorption of the H2 S from an H2 S containing gas stream, to avoid substantial buildup of thiosulfate salts, cyan... | 06/01/1993 |
| 5205908 | Purification of process gas from a partial combustion of black liquor The present invention relates to a process for the separation of sulphur and sodium compounds from a hot process gas generated during gasification of spent liquor from the kraft pulping industry, through contact with hydrogen sulphide ion and hydroxide io... | 04/27/1993 |
| 5173285 | Process for the manufacture of hydrogen sulfide The present invention relates to a process for the manufacture of hydrogen sulfide by reacting sulfur and hydrogen which comprises two hydrogenation reactions. The first hydrogenation reaction of the present invention comprises the steps of supplying hydr... | 12/22/1992 |
| 5169612 | Purification of sulphide-containing gases The removal of sulphides from gas streams while using a solid absorbent containing tin, tin oxides or mixtures thereof and optionally a stabilizing component consisting of nickel, copper, cobalt, iron or oxides thereof takes place by contacting the sulphi... | 12/08/1992 |
| 5167940 | Process and apparatus for removal of H2 S from a process gas including polyvalent metal removal and decomposition of salts and complexes A method and apparatus for treating a catalytic polyvalent metal redox absorption solution, after absorption of H2 S from a gas, in a first hydrothermal treatment, to separate the polyvalent metal, for example as a polyvalent metal sulfide prec... | 12/01/1992 |
| 5122351 | Method and apparatus for removing H2 S from a process gas and recovering sulfur A catalytic polyvalent metal redox solution can be recovered and re-used in a catalytic polyvalent metal redox solution H2 S-removal, sulfur production process by interposing a closed loop evaporator/condenser process and apparatus in the sulfu... | 06/16/1992 |
| 5089246 | Process for converting carbon disulfide to hydrogen sulfide in hydrogen sulfide/carbon disulfide mixtures A process for converting carbon disulfide (CS2) to hydrogen sulfide (H2 S) in mixtures of H2 S and CS2 is provided. The H2 S/CS2 mixture is combined with water to form a hydrolysis feed mix... | 02/18/1992 |
| 5021228 | Control of sox emission Sulfur oxides are removed from gases by contact with a composition containing 3 wt % potassium and 1 wt % thorium on alumina.... | 06/04/1991 |
| 4981661 | Process for converting and removing sulfur compounds from a CO containing gas A process is described for converting carbon oxylsulfide and/or carbon disulfide, possibly in combination with hydrogen cyanide, O2 and/or SO2 in a reducing CO containing gas stream by the catalytic hydrolysis of COS and CS2 | 01/01/1991 |
| 4892717 | Gas treating process Catalysts susceptible to deactivation by free oxygen or to reactions involving free oxygen are protected by scavenging the oxygen in the presence of an oxidation catalyst, so as to remove commingled oxygen from the reactants to be converted in the presenc... | 01/09/1990 |
| 4889700 | Process and device for selective extraction of H2 S from an H2 S-containing gas Method and devices for the selective removal of H2 S from an H2 S-containing gas by contacting the gas in an absorption column with an H2 S-selective absorbent liquid and transferring the H2 S-charged absorbent ... | 12/26/1989 |
| 4844876 | Process and device for selective extraction of H2 S from an H2 S-containing gas Method for the selective removal of H2 S from a H2 S-containing gas by operating in a single column (1) comprising an upper absorption zone (11) and a lower regeneration zone (12) separated by a medial enrichment zone (17). A selecti... | 07/04/1989 |
| 4837001 | Production of sulfur from sulfur dioxide obtained from flue gas This invention is a regenerable process for producing elemental sulfur from SO2 initially contained in a dilute gas source by: (1) absorbing the SO2 in a concentrated Na2 SO3 solution to convert most of the Na | 06/06/1989 |
| 4834953 | Process for removing residual mercury from treated natural gas Gases such as nitrogen and natural gas are depleted of contaminating mercury by contacting the gas first with an aqueous solution of sodium polysulfide and subsequently contacting the effluent gas with a cobalt salt, for example, cobalt chloride. The effl... | 05/30/1989 |
| 4806210 | H2 S and alcohol recovery process A process for the recovery of alcohols and hydrogen sulfide from a thiophosphate containing mixture is disclosed.... | 02/21/1989 |
| 4804522 | Process for removing SOx and NOx compounds from gas streams A process for removing SOx pollutants from a stack gas by (1) absorbing the SOx pollutants into an aqueous absorbent containing a formate compound and (2) regenerating the spent absorbent containing dissolved SOx compounds... | 02/14/1989 |
| 4770864 | Process for removing NH3 in an SO2 -containing gas An SO2 -containing gas, in particular, pre-stage gas for the Claus reaction to recover sulfur can effectively be purified by removing NH3 contained therein using a TiO2 catalyst.... | 09/13/1988 |
