Did You Know...
...that to encourage use of his new invention, the shopping cart, market owner Sylvan Goldman hired fake shoppers to push the carts around his store in Oklahoma City? Seems his customers were reluctant to give up their hand-carried baskets.
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| Number | Title | Issue Date |
| 7722852 | Process for the thermal reduction of sulfur dioxide to sulfur Processes for the thermal reduction of sulfur dioxide to elemental sulfur are described and disclosed. The processes described include three general reaction sections, including the reaction furnace portion where the SO2-containing stream is combusted, th... | 05/25/2010 |
| 7427383 | Hydrogen sulfide removal method and system for treating gaseous process streams A method and system for removing hydrogen sulfide from gaseous process streams, such as sour gas streams are disclosed and described. A gaseous stream containing hydrogen sulfide can be contacted with an aqueous silicon-containing composition under high shear condit... | 09/23/2008 |
| 7374742 | Direct sulfur recovery system The present invention provides a method for removing sulfur species from a gas stream without the use of a sulfur species removal process, such as an amine scrub. The sulfur species are removed by directly subjecting the gas stream to a sulfur recovery process, such... | 05/20/2008 |
| 7250149 | Sulfur gas treatment process The present invention comprises a method of treating an off-gas stream from a refining process to remove sulfur compounds. A portion of the off-gas stream containing hydrogen sulfide is injected at the front end of the thermal reactor and in at least one other locat... | 07/31/2007 |
| 7122170 | Catalysts for SPOC™ enhanced synthesis gas production A process and system for producing synthesis gas by a SPOC® enhanced catalytic partial oxidation process is disclosed. Light hydrocarbons in a H2S-containing feed gas are partially oxidized to produce hydrogen and carbon monoxide over a catalyst that sim... | 10/17/2006 |
| 7108842 | Process for the catalytic partial oxidation of HS using staged addition of oxygen A multistage oxygen-added catalytic partial oxidation process and apparatus for converting H2S in an acid gas stream to elemental sulfur and water are disclosed. Each staged addition of oxygen or air at the top of the catalyst bed and at points along the ... | 09/19/2006 |
| 7067101 | Water wall boiler for air and oxygen fired Claus sulfur recovery units The thermal combustion step of the modified Claus process is carried out in a water-wall boiler instead of a refractory-lined reaction furnace. The water-wall boiler replaces the conventional refractory-lined furnace and waste heat boiler when air, oxygen, or oxygen... | 06/27/2006 |
| 7060233 | Process for the simultaneous removal of sulfur and mercury A process for removing hydrogen sulfide, other sulfur-containing compounds and/or sulfur and mercury from a gas stream contaminated with mercury, hydrogen sulfide or both. The method comprises the step of selective oxidation of hydrogen sulfide (H2S) in a... | 06/13/2006 |
| 7055395 | Sulfur deposition control method and related control algorithm A method for detecting and controlling the elemental sulfur deposition on pressure reducing gas fuel control valves in cases where the sulfur deposition results from a temperature drop during expansion across the control valve, such as that encountered in gas turbin... | 06/06/2006 |
| 6962683 | Method of removing and recovering elemental sulfur from highly reducing gas streams containing sulfur gases A method is provided for removal of sulfur gases and recovery of elemental sulfur from sulfur gas containing supply streams, such as syngas or coal gas, by contacting the supply stream with a catalyst, that is either an activated carbon or an oxide based catalyst, a... | 11/08/2005 |
| 6946111 | Short contact time catalytic partial oxidation process for recovering sulfur from an H2S containing gas stream A process for removing sulfur from a H2S-containing gas stream is disclosed. A preferred embodiment of the process comprises incorporating a short contact time catalytic partial oxidation reactor, a cooling zone, and a condenser into a conventional refine... | 09/20/2005 |
| 6616908 | Treatment of a gas stream containing hydrogen sulphide Sour gas containing hydrogen sulphide has hydrogen sulphide absorbed therefrom in an absorbent in a vessel 4. A hydrogen sulphide rich gas stream is formed by desorbing hydrogen sulphide from the absorbent in a vessel 12. The resulting hydrogen sulphide r... | 09/09/2003 |
| 6444185 | Process for recovering as sulfur the compounds H2S, SO2, COS and/or CS2 in a tail gas from a sulfur plant A process is provided to recover residual H2 S, SO2, COS and CS2 in the tail gas from a sulphur recovery process. The tail gas is oxidized and hydrolyzed at a temperature of from 180° C. to 700° C. to provide an oxidized... | 09/03/2002 |
| 6024933 | Direct oxidation method for converting sulphur compounds into sulphur with a copper catalyst The invention relates to a process for the direct oxidation of sulphur compounds into elemental sulphur and/or into sulphates at a temperature below 200° C., in which a supported catalyst whose catalytically active phase comprises copper is used, the cop... | 02/15/2000 |
| 5814293 | Catalyst for the selective oxidation of sulfur compounds to elemental sulfur, process for preparing such catalyst and process for the selective oxidation of sulfur compounds to elemental sulfur The invention relates to a catalyst on support for the selective oxidation of sulfur-containing compounds to elemental sulfur, comprising at least one catalytically active material applied to a support material, this catalyst being obtainable by applying ... | 09/29/1998 |
| 5766567 | Method for desulphurising a gaseous mixture containing H2 S and SO.sub . A single-stage low temperature catalytic process for desulphurisation of a gas which contains a mixture of H2 S and SO2 which process includes feeding the gas to be treated at a temperature below the dew point of sulphur to a Claus c... | 06/16/1998 |
| 5653953 | Process for recovering elemental sulfur by selective oxidation of hydrogen sulfide The present invention discloses a method of selectively oxidizing hydrogen sulfide to elemental sulfur, in which a H2 S-containing gas mixture contacts with an oxygen-containing gas at 50°-500° C. in the presence of a mixed-metal catalyst. Th... | 08/05/1997 |
| 5512260 | Reduction of sulfur content in a gaseous stream A process for reducing sulfur content in a gaseous stream with the production of elemental sulfur by first treating the gaseous steam with hydrogenation and hydrolysis to convert substantially all of the sulfur components therein to hydrogen sulfide. Then... | 04/30/1996 |
| 5494650 | Process for improving the sulphur yield of a complex for producing sulphur from a sour gas containing H2 S, the said complex comprising a sulphur plant and then an oxidation and hydrolysis unit followed by a purification unit A process is provided for the improvement of the sulphur yield of an assembly which produces sulphur from H2 S and which consists of a sulphur plant (1), an oxidation and hydrolysis unit (2) and a purification unit (3). The sulphur plant in pro... | 02/27/1996 |
| 5468458 | Treatment of gas streams A part of the hydrogen sulphide content of a feed gas stream comprising hydrogen sulphide is burned by a burner that fires into a furnace. The combustion is supported by a stream of oxygen or oxygen-enriched air. Resulting sulphur dioxide reacts with resi... | 11/21/1995 |
| 5370848 | Sulfur absorbents Provided is an improved process for removing sulfur compounds from sulfur contaminated fluid streams by contacting such fluid streams with an absorbent composition comprising zinc oxide, silica, and molybdenum disulfide. The absorbent composition comprisi... | 12/06/1994 |
| 5366717 | Method for producing elemental sulfur from sulfur-containing gases A method for producing elemental sulfur and reduced/oxidized sulfur compounds from sulfur containing gases. The method comprises mixing a primary gas stream of sulfur-containing gases with a secondary gas stream to produce a combined gas stream having a p... | 11/22/1994 |
| 5366708 | Process for catalytic reaction of gases Apparatus and process for the catalytic gaseous phase reaction of a feed gas mixture. The apparatus includes a reactor having two ends which alternately serve as an inlet for the feed gas mixture and as an outlet for reacted gas and two stationary heat ex... | 11/22/1994 |
| 5262135 | Process for producing elemental sulfur from an H2 S-containing gas The gas to be treated contains H2 S and carbon compounds first enters the combustion chamber of a Claus process plant and a gas mixture which contains 1 to 3 moles H2 S per mole of SO2 is withdrawn from that combustion cha... | 11/16/1993 |
| 5256384 | Activated carbon process for removing hydrogen sulfide from gases To a gas which contains H2 S and water vapor and which is to be desulfurized oxygen is added at such a rate that the gas contains 1 to 20 moles O2 per mole of H2 S. At a temperature in the range of 50° to 180° C. the gas... | 10/26/1993 |
| 5202107 | Process for improving the sulphur yield of a complex for the production of sulphur followed by a purification unit A process is provided for improving the sulphur yield of a sulphur production unit using an acid gas containing H2 S and wherein said unit is comprised of a sulphur plant with a downstream purification unit. The H2 S resulting from h... | 04/13/1993 |
| 5176888 | Acid rain abatement The process of this invention will remove acid rain precursors, sulfur oxides (SOX) and nitrogen oxides (NOX) by catalytically reducing the NOX to water and elemental nitrogen and the SOX to either H2 S or elemental sulfur as desired. The proce... | 01/05/1993 |
| 5120517 | Process for the removal of sulfur oxides and nitrogen oxides from flue gas A continuous process for removing sulfur oxide and nitrogen oxide contaminants from the flue gas generated by industrial power plants and boiler system burning sulfur containing fossil fuels. The sulfur oxide and nitrogen oxide contaminants removed from t... | 06/09/1992 |
| 5106607 | Multilobar catalysts for the conversion of sulfur containing gaseous effluents Multilobar shaped catalyst particulates, e.g., tri- or quadrilobar particulates, well adapted for the catalytic conversion of gases containing compounds of sulfur, e.g. SO2, H2 S, COS and/or CS2, by the Claus reaction and/... | 04/21/1992 |
| 4857296 | CeO catalytic desulfurization of industrial gases The desulfurization of industrial gases by the catalytic conversion of contaminating sulfur values therein, comprising, e.g., either Claus process or hydrolysis of organosulfur compounds, is carried out in the presence of an effective amount of a cerium o... | 08/15/1989 |
| 4818740 | Catalyst for the selective oxidation of sulfur containing compounds to elemental sulfur The invention relates to a catalyst for the selective oxidation of sulfur-containing compounds, in particular hydrogen sulfide, to form elemental sulfur, comprising a carrier of which the surface exposed to the gaseous phase does not exhibit alkaline prop... | 04/04/1989 |
| 4814159 | Catalytic process for the production of sulphur from a gas containing H.sub. S A catalytic process for the production of sulphur from an acid gas containing H2 S, in which a part of H2 S is catalytically oxidized in order to form an effluent containing H2 S and SO2 in a molar ratio of 2:1 ... | 03/21/1989 |
| 4636371 | Removal of sulfur oxides from fluid streams The removal of sulfur oxide (particularly sulfur dioxide) from a fluid stream, such as the tail gas from a sulfur process, is accomplished by contacting such fluid stream with a catalyst composition comprising zinc titanate and a promoter in the presence ... | 01/13/1987 |
| 4608363 | Activated alumina Claus catalyst having increased sodium oxide content An improved Claus catalyst comprising activated alumina in which sodium oxide concentration is controlled to achieve increased sulfur conversion. Sodium oxide is present in an amount greater than 1.0 wt % (1100° C. calcined basis), the remainder being ac... | 08/26/1986 |
| 4605546 | Catalytic process for the production of sulfur from a gas containing H2 S A catalytic process for the production of sulphur from an acid gas containing H2 S, in which a part of H2 S is catalytically oxidized in order to form an effluent containing H2 S and SO2 in a molar ratio of 2:1 ... | 08/12/1986 |
| 4581128 | Hydrocarbon desulfurization process A sour liquid hydrocarbon feedstock is desulfurized upon contact with a hydrogen gas in the presence of a catalyst to obtain a low sulfur product and a hydrogen sulfide gas by-product. The hydrogen sulfide gas is treated with an anthraquinone which is dis... | 04/08/1986 |
| 4568664 | Activated alumina Claus catalyst having increased sodium oxide content An improved Claus catalyst comprising activated alumina in which sodium oxide concentration is controlled to achieve increased sulfur conversion. Sodium oxide is present in an amount greater than 0.50 wt % (1100° C. calcined basis), the remainder being a... | 02/04/1986 |
| 4533529 | Sulfur recovery process Sulfur species are removed from a Claus plant tail gas stream by contacting with zinc oxide in the presence of sufficient reducing equivalents for conversion of sulfur compounds to hydrogen sulfide. In another aspect, sulfur compounds are converted to hyd... | 08/06/1985 |
| 4514375 | Method of recovering sulfur from the hydrogen sulfide contained in coke oven gases Ammonia and hydrogen sulfide are washed out of the coke oven gas and stripped from the wash liquor in the form of gases and fumes or vapors. The ammonia is decomposed in a nickel catalyzer and a small part of the decomposition gases is supplied directly t... | 04/30/1985 |
| 4508699 | Claus process improvement An improvement in the Claus Process for producing sulfur by reaction of hydrogen sulfide with sulfur dioxide at elevated temperature in the presence of a porous catalyst is described. The improvement lies in employing a porous catalyst, preferably alumina... | 04/02/1985 |
