Elemental Sulfur Patents (Class 423/567.1)
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Patent number: 10570218Abstract: A vulcanizing composition useful for the vulcanization of vulcanizable formulations is disclosed. The vulcanizing composition includes a vulcanizing agent which in turn includes a cyclododecasulfur compound. A cyclododecasulfur compound characterized by a DSC melt point onset of between 155° C. and 167° C. when measured at a DSC heat rate of 20° C./minute is also disclosed.Type: GrantFiled: May 29, 2018Date of Patent: February 25, 2020Assignee: Eastman Chemical CompanyInventors: Scott Donald Barnicki, Frederick Ignatz-Hoover, Robert Thomas Hembre, Andrew Neil Smith, Henk Kreulen
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Patent number: 9884283Abstract: A method for treating sulfur-containing exhaust gases is provided, comprising the following steps: step i): mixing the sulfur-containing exhaust gases, air, and a hydrocarbon fuel, and controlling a reaction between the air and the hydrocarbon fuel therein, to obtain a procedure gas stream comprising the sulfur-containing exhaust gases, hydrogen, and carbon oxides; step ii): controlling a hydrogenation reaction between the hydrogen contained in the procedure gas stream and a sulfur-containing substance in the sulfur-containing exhaust gases, to obtain hydrogenated tail gases containing hydrogen sulfide; and step iii): absorbing the hydrogen sulfide contained in the hydrogenated tail gases with an absorbing agent to obtain purified tail gases.Type: GrantFiled: June 5, 2015Date of Patent: February 6, 2018Assignee: CHINA PETROLEUM & CHEMICAL CORPORATIONInventors: Aihua Liu, Jianfeng Shang, Baojun Luo, Jianli Liu, Jinshan Xu, Wenliang Zhang, Peng Han, Cuicui Xu, Weidong Tao
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Publication number: 20150008368Abstract: A method for obtaining sweet gas, synthetic gas, and sulphur from natural gas. The method includes the steps of removing impurities from the natural gas for obtaining pre-treated natural gas; sweetening the pre-treated natural gas through a separation using a plurality of membranes for obtaining sweet gas and acid gases; ionizing the acid gases to dissociate them into sulphur and synthetic gas with remnants of acid gases; and neutralizing the synthetic gas with remnants of acid gases for generating sweet gas. Likewise, a system is presented on how to implement the method.Type: ApplicationFiled: July 3, 2013Publication date: January 8, 2015Inventors: Yibran Argenis PERERA MERCADO, Luis Alfonso GARCIA CERDA, Griselda CASTRUITA DE LEON, Luis Alberto VILLARREAL CARDENAS, Maria Guadalupe NEIRA VELAZQUEZ, Manuel de Jesus AGUILAR VEGA, Maria Isabel de los Dolores LORIA BASTARRACHEA, Jose Luis SANTIAGO GARCIA, Alejandra Aimee GUTIERREZ MEJIA, Joel Osvaldo PACHECO SOTELO, Marquidia Josseline PACHECO PACHECO, Ricardo VALDIVIA BARRIENTOS, Jose Fidel RAMOS FLORES, Miguel Angel DURAN GARCIA, Miguel Angel HIDALGO PEREZ
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Patent number: 8926737Abstract: The present invention provides a process for purifying natural gas, comprising removing mercaptans from a natural gas stream by a combination of an amine-based separation unit and a selective oxidation unit to obtain a purified natural gas stream, wherein at least part of the mercaptans are converted into at least elemental sulphur in the selective oxidation unit by selective catalytic oxidation.Type: GrantFiled: November 26, 2009Date of Patent: January 6, 2015Assignee: Shell Oil CompanyInventors: Arnab Chatterjee, Carolus Matthias Anna Maria Mesters, Ronald Jan Schoonebeek, Eri Ito
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Publication number: 20140308198Abstract: The present invention relates to a process for the preparation of articles of manufacture made of or based on sulphur, which comprises cooling of liquid sulphur in a volume of containment until the sulphur mass solidifies and forming of the product, characterised in that elastic pressure waves are applied to the cooling mass of liquid sulphur to produce a crystalline suspension of solid sulphur in liquid sulphur.Type: ApplicationFiled: April 18, 2012Publication date: October 16, 2014Applicants: AUSY S.R.L., FALCONIERI, ANTONIO SALVATOREInventors: Antonio Salvatore Falconieri, Franco Finocchiaro, Claudio Paolo Cecchini
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Publication number: 20140193324Abstract: A process is provided for the production of a micronized sulphur powder product as well as a micronized sulphur cake intermediate. Production of the micronized sulphur powder using this process, which comprises preparation of a micronized sulphur emulsion from molten sulphur and a dispersant solution, from which the dispersant solution is subsequently removed, produces a product superior quality, and the method of production itself has enhanced safety and economic attributes.Type: ApplicationFiled: February 7, 2014Publication date: July 10, 2014Applicant: SULVARIS INC.Inventor: Satish IYER
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Patent number: 8771636Abstract: Chemical processes and reactors for efficiently producing hydrogen fuels and structural materials and associated systems and methods. A representative process includes dissociating a hydrogen donor into dissociation products by adding energy to the hydrogen donor, wherein the energy includes waste heat generated by a process other than dissociating the hydrogen donor. The process can further include providing, from the dissociation products, a structural building block and/or a hydrogen-based fuel, with the structural building block based on carbon, nitrogen, boron, silicon, sulfur, and/or a transition metal.Type: GrantFiled: November 26, 2012Date of Patent: July 8, 2014Assignee: McAlister Technologies, LLCInventor: Roy Edward McAlister
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Publication number: 20140186706Abstract: A method is presented for fabricating an anode preloaded with consumable metals. The method provides a material (X), which may be one of the following materials: carbon, metals able to be electrochemically alloyed with a metal (Me), intercalation oxides, electrochemically active organic compounds, and combinations of the above-listed materials. The method loads the metal (Me) into the material (X). Typically, Me is an alkali metal, alkaline earth metal, or a combination of the two. As a result, the method forms a preloaded anode comprising Me/X for use in a battery comprising a M1YM2Z(CN)N·MH2O cathode, where M1 and M2 are transition metals. The method loads the metal (Me) into the material (X) using physical (mechanical) mixing, a chemical reaction, or an electrochemical reaction. Also provided is preloaded anode, preloaded with consumable metals.Type: ApplicationFiled: March 6, 2014Publication date: July 3, 2014Applicant: Sharp Laboratories of America, Inc.Inventors: Long Wang, Yuhao Lu, Jong-Jan Lee
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Patent number: 8679446Abstract: A process is provided for the production of a micronized sulphur powder product as well as a micronized sulphur cake intermediate. Production of the micronized sulphur powder using this process, which comprises preparation of a micronized sulphur emulsion from molten sulphur and a dispersant solution, from which the dispersant solution is subsequently removed, produces a product of superior quality, and the method of production itself has enhanced safety and economic attributes.Type: GrantFiled: March 9, 2010Date of Patent: March 25, 2014Inventor: Satish R. Iyer
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Publication number: 20140079614Abstract: The present invention provides a process for reducing sulfur emission of a sulfur plant, wherein the sulfur plant includes a thermal reaction unit, a catalytic reaction unit and a tail-gas purification unit, the process is characterized in that the waste-gas from the degassing of the liquid sulfur in the liquid sulfur tank is introduced into the catalytic reaction unit, and/or the waste-gas from the degassing of the liquid sulfur in the liquid sulfur tank is introduced into the tail-gas purification unit. In present invention, the H2S in purified tail-gas can be reduced to no more than 10 ppm(v) and the SO2 emission concentration of the sulfur plant can be reduced to no more than 100 mg/m3.Type: ApplicationFiled: September 19, 2013Publication date: March 20, 2014Applicant: CHINA PETROLEUM & CHEMICAL CORPORATIONInventors: Aihua LIU, Yongchang XU, Qinshu LI, Jianbang REN, Jianli LIU, Yiling ZHANG
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Patent number: 8597581Abstract: A system may include a sulfur recovery unit. The sulfur recovery unit may include an acid gas supply, which may supply acid gas, an oxygen supply, which may supply oxygen, a fuel supply, which may supply fuel. The fuel may have a higher heating value than the acid gas. Also, the sulfur recovery unit may include a thermal reaction zone, which may thermally recover sulfur from the acid gas by combustion of the fuel and the acid gas with the oxygen and through reaction of the acid gas with combustion products arising from the combustion.Type: GrantFiled: January 4, 2010Date of Patent: December 3, 2013Assignee: General Electric CompanyInventors: Sachin Suhas Naphad, Ganesh Prasadh Kidambi
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Patent number: 8585993Abstract: Methods for regenerating amorphous iron oxide hydroxide after being used as desulfurizer by (1) grinding a waste mixture into waste powder, wherein the waste mixture results from use of the composition comprising amorphous iron oxide hydroxide as desulfurizer; (2) preparing the waste powder into a suspension and charging the suspension with a gas containing oxygen to obtain a slurry comprising amorphous iron oxide hydroxide and elemental sulfur; and (3) placing the slurry or a solid resulting from filtering the slurry into a container and charging the slurry or the solid with air so that the elemental sulfur floats and the amorphous iron oxide hydroxide precipitates.Type: GrantFiled: June 30, 2011Date of Patent: November 19, 2013Assignee: Beijing Sanju Enviromental Protection and New Material Co., Ltd.Inventors: Zhenyi Liu, Fengren Liu, Ke Lin
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Patent number: 8580225Abstract: Use of organomodified polysiloxanes which have at least three different polyether radicals, at least two of these polyether radicals differing by at least 9% by mass in the proportion of ethylene oxide units therein in the total weight of the polyether radical, as a release agent or release agent constituent in melt granulation.Type: GrantFiled: July 5, 2012Date of Patent: November 12, 2013Assignee: Evonik Goldschmidt GmbHInventors: Rene Haensel, Sabine Giessler-Blank, Stefan Kempka
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Patent number: 8580208Abstract: 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 lower part of the reactor. The distributor device (15) is arranged in the sulfur melt (9) and comprises a distributor plate (16) which is arranged in the reactor (1) and has an edge (17) extending downward and, if appropriate, has passage orifices (19). The hydrogen from a hydrogen bubble which forms below the distributor plate (16) is (for example through the passage orifices (19)) distributed in the sulfur melt (9) via the distributor plate (16).Type: GrantFiled: December 9, 2010Date of Patent: November 12, 2013Assignee: BASF SEInventors: Andreas Woelfert, Herald Jachow, Heinz Driess
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Patent number: 8529855Abstract: A method for removing gas components SOx, NOx, and CO2 from a flue gas, comprises the steps of contacting the flue gas successively with first, second and third liquid mediums each of which provides a plasma containing reactive electrons or ions in an amount such that the gas molecules SOx, NOx, and CO2 are successively subjected to impingement of the electrons or ions in the respective plasma to enable the dissociation of the gas molecules SOx, NOx, and CO2 so as to remove SOx, NOx, and CO2 from the flue gas. A system for removing gas components SOx, NOx, and CO2 from a flue gas is also disclosed.Type: GrantFiled: May 26, 2010Date of Patent: September 10, 2013Assignee: Ecospec Global Technology Pte Ltd.Inventor: Hwee Hong Chew
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Publication number: 20130230448Abstract: A method of producing micronized sulphur wherein elemental sulphur is dissolved in a solvent for sulphur to produce a sulphur-solvent solution and precipitation of the dissolved sulphur is effected or controlled by manipulation of at least one of pressure, temperature or water content in the solvent to produce the micronized sulphur.Type: ApplicationFiled: April 1, 2013Publication date: September 5, 2013Inventors: Raymond G.F. Abry, Todd Beasley, Richard Lyle Johnson, Richard Eugene Kuzub, Jin Kwon Tak
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Publication number: 20130157845Abstract: Activated carbon is rendered more thermally stable by exposure to a non-halogenated additive, and optionally to a halogen and/or a halogen-containing compound. Such treated carbon is suitable for use in mitigating the content of hazardous substances in flue gases, especially flue gases having a temperature within the range of from about 100° C. to about 420° C.Type: ApplicationFiled: August 19, 2011Publication date: June 20, 2013Applicant: ALBEMARLE CORPORATIONInventors: Christopher J. Nalepa, William S. Pickrell, Gregory H. Lambeth, Qunhui Zhou
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Patent number: 8431106Abstract: A method of producing micronized sulphur wherein elemental sulphur is dissolved in a solvent for sulphur to produce a sulphur-solvent solution and precipitation of the dissolved sulphur is effected or controlled by manipulation of at least one of pressure, temperature or water content in the solvent to produce the micronized sulphur.Type: GrantFiled: August 10, 2007Date of Patent: April 30, 2013Assignee: CCR, Technologies, Ltd.Inventors: Raymond G. F. Abry, Todd Stephen Beasley, Richard Lyle Johnson, Richard Eugene Kuzub, Jin Kwon Tak
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Publication number: 20130071315Abstract: Sulfur emissions from liquid sulfur are reduced, or even entirely avoided by degassing the liquid sulfur at pressure in an out-of-pit vessel and by sweeping the rundown pit (or vessel) with a sweep gas that is non-poisonous for a hydrogenation catalyst. Acid gases from degassing are fed at pressure to the Claus unit, while sweep gases are fed to the tail gas treatment unit to substantially recycle the acid gases to extinction. In preferred plants and methods, motive fluids and booster eductors or compressors are not needed, and incineration of the acid gases can be avoided.Type: ApplicationFiled: September 21, 2012Publication date: March 21, 2013Applicant: FLUOR TECHNOLOGIES CORPORATIONInventor: FLUOR TECHNOLOGIES CORPORATION
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Publication number: 20130052122Abstract: A process tank for producing insoluble sulfur comprising a tank body having an upper half portion, a lower half portion, a first end and a second end along the longitudinal axis; an inner semi-cylinder body inside the upper half portion; and a first filter plate in the lower half portion. The space between the inner semi-cylinder body and the tank body is a sandwich structure, and an inner cavity independent of the sandwich structure is provided inside the tank body. The first filter plate is wavelike in the cross section which separates from the inner cavity a first filter liquid cavity. A first liquid outlet communicating with the first filter liquid cavity is provided on the tank body.Type: ApplicationFiled: May 1, 2012Publication date: February 28, 2013Applicant: Jiangsu Sinorgchem Technology Co., Ltd.Inventors: Xinmin CHEN, Dezhu WANG, Luxin WANG
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Patent number: 8318131Abstract: Chemical processes and reactors for efficiently producing hydrogen fuels and structural materials and associated systems and methods. A representative process includes dissociating a hydrogen donor into dissociation products by adding energy to the hydrogen donor, wherein the energy includes waste heat generated by a process other than dissociating the hydrogen donor. The process can further include providing, from the dissociation products, a structural building block and/or a hydrogen-based fuel, with the structural building block based on carbon, nitrogen, boron, silicon, sulfur, and/or a transition metal.Type: GrantFiled: February 14, 2011Date of Patent: November 27, 2012Assignee: McAlister Technologies, LLCInventor: Roy Edward McAlister
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Publication number: 20120252999Abstract: Systems and methods of producing chemical compounds are disclosed. An example chemical production system includes a combustion chamber having intake ports for entry of a gas mixture. An igniter ignites the gas mixture in the intake chamber to facilitate a reaction at a high temperature and high pressure. A nozzle restricts exit of the ignited gas mixture from the combustion chamber. An expansion chamber cools the ignited gas. The expansion chamber has an exhaust where the cooled gas exits the expansion chamber. A chemical compound product is formed in the expansion chamber.Type: ApplicationFiled: April 12, 2012Publication date: October 4, 2012Inventor: Bruce H. Peters
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Patent number: 8221519Abstract: Powder which is for a flux-cored wire intended to become alloyed with a molten metal bath and which is formed by particles composed with at least 95% of sulphur, characterised in that its granulometric population is defined by: ?1 ?m?d10?340 ?m; ?200 ?m d50?2000 ?m; ?500 ?m d90?2900 ?m. Sulphur-based flux-cored wire, characterised in that it contains the preceding powder, and in that the compaction rate of the powder within the wire is greater than or equal to 85%. Method for producing a sulphur-based flux-cored wire for alloying with molten metal baths.Type: GrantFiled: April 15, 2010Date of Patent: July 17, 2012Assignee: AffivalInventors: Andre Poulalion, Sebastien Gerardin, Vincent Moreschi
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Patent number: 8052935Abstract: A system for removing sulfur from a gaseous stream includes (a) a reaction bed for receiving the gaseous stream and for reacting sulfur dioxide and at least some of the hydrogen sulfide of the gaseous stream into elemental sulfur to provide an elemental sulfur stream and a first product stream; and (b) a circulating fluidized bed comprising (i) a first region for receiving the first product stream and using a sulfur adsorption material to adsorb and remove any remaining hydrogen sulfide from the first product stream to generate saturated sulfur adsorption material and a second product stream substantially free of sulfur; and (ii) a second region for receiving a regeneration stream and for using the regeneration stream to regenerate the saturated sulfur adsorption material and to generate the sulfur dioxide.Type: GrantFiled: April 30, 2009Date of Patent: November 8, 2011Assignee: General Electric CompanyInventors: Thomas Frederick Leininger, Ke Liu, Wei Wei, Rizeq George Rizeq
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Publication number: 20110262345Abstract: Sulfur sought to be removed from deposits formed at a subterranean gas producing well is dissolved in a high boiling point relatively pure and low cost non-aqueous solvent. The dissolved sulfur is then removed from the solvent by lowering the temperature of the solution to precipitate the sulfur which is then separated and recovered as a relatively pure product. After additional processing the regenerated solvent is injected back down the well hole to dissolve additional sulfur and reutilized in successive cycles of the process. An amine or solubilizing agent may be added to the non-aqueous solvent, and an oxidizing agent may be provided during the process to oxidize polysulfides to sulfur.Type: ApplicationFiled: April 12, 2011Publication date: October 27, 2011Inventors: Bryan J. Petrinec, David M. Seeger
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Publication number: 20110256044Abstract: A wet desulfurizing method for removal of H2S from gaseous stream at normal temperature, the method including: (a) contacting and reacting the gaseous stream containing H2S with a suspension containing desulfurizer in a desulfurization reactor; (b) leading the suspension containing waste agent produced by desulfurizing of desulfurizer after the reaction in step (a) to a regenerative reactor, and regenerating the waste agent using an oxygen-containing gas; (c) leading the suspension containing desulfurizer regenerated in step (b) to the desulfurization reactor in step (a), and contacting and reacting with the gaseous stream containing H2S. A simple method for removing hydrogen sulfide from gas at room temperature and normal pressure, which features high desulfurization rate and low cost.Type: ApplicationFiled: June 30, 2011Publication date: October 20, 2011Applicant: Beijing Sanju Environmental Protection and New Material Co., Ltd.Inventors: Zhenyi LIU, Zhiqiang WU, Xiangsheng WANG
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Publication number: 20110206601Abstract: A sulfur recovery system for recovering sulfur from a sulfur plant feed stream including a first sulfur removal system and a second sulfur removal system. The system includes a sulfur plant feed inlet to the first sulfur removal system, the sulfur plant feed inlet being capable of providing a sulfur plant feed stream at a first pressure. One or more oxidizing gas inlets are arranged and disposed to combine at least one oxidizing gas stream with the sulfur plant feed stream to form a combustion gas for combustion in the first sulfur removal system at a second pressure. A flow restriction device is operably configured to control an operating pressure in one or both of the first sulfur removal system and the second sulfur removal system. A gas processing plant and method for recovering sulfur from a sulfur plant feed stream are also disclosed.Type: ApplicationFiled: February 22, 2010Publication date: August 25, 2011Applicant: AIR PRODUCTS AND CHEMICALS, INC.Inventors: Xianming Jimmy Li, Elmo Nasato, Jung Soo Choe
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Patent number: 7988767Abstract: Contemplated configurations and methods for elemental sulfur removal from various gases, and especially well acid gases employ a hydrocarbon solvent that dissolves the sulfur to form a rich solvent and that is then regenerated by hydrotreating. Thus, sulfur is removed from the rich solvent as H2S that may then be processed (e.g., in Claus unit or absorption unit) while the regenerated solvent is routed back to the well and associated production pipes.Type: GrantFiled: August 28, 2007Date of Patent: August 2, 2011Assignee: Fluor Technologies CorporationInventors: Curt Graham, Robert Henderson, Richard B. Nielsen, Michael Debest
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Patent number: 7927577Abstract: Systems and methods for the collection of liquid sulfur with integrated degassing are described, wherein the system and methods include the use of one or more liquid jet pumps or eductors employing a pumped liquid sulfur recycle stream as motive fluid to boost sulfur rundown pressure. The new invention eliminates piping constraints inherent with conventional gravity flow, thus permitting location of the sulfur collection vessel above ground and remote from the sulfur recovery unit. In addition, the described methods provide entrainment and enough agitation in the liquid sulfur such that simultaneously degassing occurs within the sulfur collection piping and associated systems described herein. The instant systems and methods are integrated with the degassing system, meaning that the sulfur will be initially degassed during the collection process, and then further degassing occurs by the methods described herein.Type: GrantFiled: January 12, 2010Date of Patent: April 19, 2011Assignee: Worleyparsons Group, Inc.Inventors: Mahin Rameshni, Stephen L. Santo
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Patent number: 7901646Abstract: Disclosed herein are various types of systems and methods for the efficient production of sulfur from a sulfur-laden gas. The system described herein includes a desulfurization unit, a regenerator receiving sulfurized mass from the desulfurization unit, a sulfur recovery unit, a sulfur track in fluid communication with the regenerator and the sulfur recovery unit, and a sulfur concentrator on a sulfur track. The sulfur stream coming out of the regenerator is concentrated using the sulfur concentrator and converted into a sulfur product at the sulfur recovery unit.Type: GrantFiled: August 5, 2009Date of Patent: March 8, 2011Assignee: General Electric CompanyInventors: Raul Eduardo Ayala, Harish Radhakrishna Acharya
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Publication number: 20110048982Abstract: The present invention is a method and material for using a sorbent material to capture and stabilize mercury. The method for using sorbent material to capture and stabilize mercury contains the following steps. First, the sorbent material is provided. The sorbent material, in one embodiment, is nano-particles. In a preferred embodiment, the nano-particles are unstabilized nano-Se. Next, the sorbent material is exposed to mercury in an environment. As a result, the sorbent material captures and stabilizes mercury from the environment. In the preferred embodiment, the environment is an indoor space in which a fluorescent has broken.Type: ApplicationFiled: October 7, 2008Publication date: March 3, 2011Applicant: BROWN UNIVERSITYInventors: Robert H. Hurt, Steven P. Hamburg, Love Sarin, Indrek Kulaots
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Publication number: 20110044885Abstract: The invention relates to a method for production sulfur from an input gas comprising H2S, wherein a part of the H2S is burned in the presence of O2 and/or air to form SO2, and H2O, and the SO2 is reduced to sulfur and H2O using at least one catalyst and further H2S. In order to be able to control the temperatures in the combustion chamber, feedwater is sprayed into the process gas present in the combustion chamber.Type: ApplicationFiled: October 29, 2008Publication date: February 24, 2011Applicant: Lungi GmbHInventor: Mathias Fischer
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Publication number: 20110044884Abstract: The present subject matter is directed to plasma dissociation of fluidic hydrogen sulfide to hydrogen and sulfur. A reactor is configured to have a plasma discharge and a vortex flow pattern. The plasma discharge provides energy to the hydrogen sulfide disassociation reaction and the vortex flow pattern helps to cause the condensation of sulfur molecules. The condensation of sulfur molecules helps to reduce the amount of energy input required to disassociate a certain amount of hydrogen sulfide. Additionally, the reactor may be configured to have a vortex flow pattern that provides for a recirculation zone in which relatively warm reaction products may exchange their heat energy with relatively cool input fluids.Type: ApplicationFiled: May 7, 2008Publication date: February 24, 2011Applicant: Drexel UniversityInventors: Alexander F Gutsol, Alexander Fridman
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Publication number: 20110033370Abstract: Disclosed herein are various types of systems and methods for the efficient production of sulfur from a sulfur-laden gas. The system described herein includes a desulfurization unit, a regenerator receiving sulfurized mass from the desulfurization unit, a sulfur recovery unit, a sulfur track in fluid communication with the regenerator and the sulfur recovery unit, and a sulfur concentrator on a sulfur track. The sulfur stream coming out of the regenerator is concentrated using the sulfur concentrator and converted into a sulfur product at the sulfur recovery unit.Type: ApplicationFiled: August 5, 2009Publication date: February 10, 2011Applicant: GENERAL ELECTRIC COMPANYInventors: Raul Eduardo Ayala, Harish Radhakrishna Acharya
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Publication number: 20100233761Abstract: A method of fractionating biomass, by permeability conditioning biomass suspended in a pH adjusted solution of at least one water-based polar solvent to form a conditioned biomass, intimately contacting the pH adjusted solution with at least one non-polar solvent, partitioning to obtain an non-polar solvent solution and a polar biomass solution, and recovering cell and cell derived products from the non-polar solvent solution and polar biomass solution. Products recovered from the above method. A method of operating a renewable and sustainable plant for growing and processing algae.Type: ApplicationFiled: March 10, 2010Publication date: September 16, 2010Inventors: Thomas J. Czartoski, Robert Perkins, Jorge L. Villanueva, Glenn Richards
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Patent number: 7790315Abstract: The present invention pertains to composite cathodes suitable for use in an electrochemical cell, said cathodes comprising: (a) an electroactive sulfur-containing cathode material, wherein said electroactive sulfur-containing cathode material, in its oxidized state, comprises a polysulfide moiety of the formula —Sm—, wherein m is an integer equal to or greater than 3; and, (b) an electroactive transition metal chalcogenide composition, which encapsulates said electroactive sulfur-containing cathode material, and which retards the transport of anionic reduction products of said electroactive sulfur-containing cathode material, said electroactive transition metal chalcogenide composition comprising an electroactive transition metal chalcogenide having the formula MjYk(OR)l wherein: M is a transition metal; Y is the same or different at each occurrence and is oxygen, sulfur, or selenium; R is an organic group and is the same or different at each occurrence; j is an integer ranging from 1 to 12; k is a number ranType: GrantFiled: January 13, 2006Date of Patent: September 7, 2010Assignee: Sion Power CorporationInventors: Shyama P. Mukherjee, Terje A. Skotheim
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Publication number: 20100178229Abstract: Use of ionic liquids as solvents for elements such as phosphorus, selenium, tellurium and sulphur, and compounds thereof.Type: ApplicationFiled: August 21, 2006Publication date: July 15, 2010Applicant: THE QUEEN'S UNI.IONIC LIQUID LAB. RESEARCH CENTREInventors: Martin John Earle, Eva Boros, Kenneth Richard Seddon, Manuela A. Gilea, Joseph S. Vyle
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Publication number: 20100150817Abstract: A method of producing micronized sulphur wherein elemental sulphur is dissolved in a solvent for sulphur to produce a sulphur-solvent solution and precipitation of the dissolved sulphur is effected or controlled by manipulation of at least one of pressure, temperature or water content in the solvent to produce the micronized sulphur.Type: ApplicationFiled: August 10, 2007Publication date: June 17, 2010Inventors: Raymond G.F. Abry, Todd Stephen Beasley, Richard Lyle Johnson, Richard Eugene Kuzub, Jin Kwon Tak
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Patent number: 7531135Abstract: In a process and system for recovering sulfur from a process gas stream initially comprising a hydrogen sulfide containing gas and an oxygen containing gas, a control process and system respectively are provided. The sulfur recovery process includes a thermal step having a beginning followed by a catalytic step having an end. The control process includes first analyzing a composition of the process gas stream at a first location between the beginning of the thermal step and the end of the catalytic step, first controlling the oxygen containing gas having regard to that first composition, second analyzing the composition of the process gas stream at a second location downstream of the end of the catalytic step, and second controlling the oxygen containing gas having regard to that second composition. The sulfur recovery system and control system therefor are provided for performing the steps of the sulfur recovery process and control process respectively.Type: GrantFiled: July 13, 2004Date of Patent: May 12, 2009Inventors: Paul E. d'Haêne, Peter S. Schermann
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Patent number: 7498006Abstract: A method of extracting gold from arsenic gold ore concentrate, wherein increase the temperature of smelting chamber to 100-300° C. and then hold the temperature to remove the vapor and small quantity of dust in the arsenic gold ore concentrate; Under residual pressure?50 Pa, increase the temperature of smelting chamber and crystallization chamber to 300-500° C. and then hold the temperature to remove the volatilized arsenic sulfides; Hold the temperature of crystallization chamber, increase the temperature of smelting chamber to 500-600° C. and then hold the temperature to remove the gaseous element sulfur decomposed; Increase the temperature of smelting chamber to 600-760° C. and then hold the temperature, lower the crystallization chamber temperature to 270-370° C. and then hold the temperature to get element arsenic; shutdown, lower the temperature, charge the air, take out the gold-rich slag after dearsenization, and extract fine gold using conventional method.Type: GrantFiled: October 14, 2003Date of Patent: March 3, 2009Assignee: Beijing Goldtech Co., LtdInventor: Wenzhou Luo
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Publication number: 20080187819Abstract: A method and apparatus is disclosed for utilizing sulfur as a consumable fuel in an electrochemical cell. The principal of the above described invention is that sulfur is oxidized or acts as an oxidizing agent to produce energy while avoiding the production of harmful gases and other byproducts, traditionally associated with the burning of sulfur.Type: ApplicationFiled: October 31, 2007Publication date: August 7, 2008Inventor: Wesley Martin Lang
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Patent number: 7402547Abstract: Contact of a crude feed with one or more catalysts produces a total product that includes a crude product. The crude feed has a residue content of at least 0.2 grams of residue per gram of crude feed. Methods of preparing the one or more catalysts are described. The crude product is a liquid mixture at 25° C. and 0.101 MPa. One or more properties of the crude product may be changed by at least 10% relative to the respective properties of the crude feed. The crude product may include hydrocarbons with different boiling point distributions.Type: GrantFiled: December 16, 2004Date of Patent: July 22, 2008Assignee: Shell Oil CompanyInventors: Scott Lee Wellington, Stanley Nemec Milam
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Patent number: 7357905Abstract: The invention relates to a process for direct oxidation into sulfur and/or into sulfate of sulfur-containing compounds that are contained in an amount that is less than 10% by volume in a gas, in which said gas is brought into contact with an oxidation catalyst that comprises a substrate and an active phase that comprises iron in a proportion of between 2 and 5% by weight of the oxidation catalyst at a temperature of less than 200° C. and in the presence of oxygen.Type: GrantFiled: July 9, 2004Date of Patent: April 15, 2008Assignee: Institut Francais du PetroleInventors: Jean-François Chapat, Christophe Nedez, Jean-Louis Ray
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Process for the recovery of elemental sulphur from residues produced in hydrometallurgical processes
Publication number: 20070274902Abstract: The present invention relates to a process for the recovery of elemental sulphur from residues produced in hydrometallurgical processes based on leaching with a solution of sodium sulphide in which the sulphur contained in the residues is selectively leached as sodium polysulphide. The sulphur leaching solution is conveniently regenerated and recycled to the process.Type: ApplicationFiled: May 22, 2007Publication date: November 29, 2007Applicant: ENGITEC TECHNOLOGIES S.p.AInventors: Marco Olper, Massimo Maccagni, Silvano Cossali -
Patent number: 7138101Abstract: Apparatus and process for recovering elemental sulfur from a H2S-containing waste gas stream are disclosed. The apparatus preferably comprises a first reaction zone for carrying out the catalytic partial oxidation of H2S, a second reaction zone for the catalytic partial reduction of any incidental SO2 produced in the first reaction zone, and a cooling zone including a sulfur condenser. According to a preferred embodiment of the process, a mixture of H2S and O2 contacts a catalyst in the first reaction zone very briefly (i.e, less than about 200 milliseconds) producing primarily S0 and H2O. Some SO2 is also present in the first stage product gas mixture. A reductant gas (e.g. CO, or CH4 or natural gas) is fed together with the first stage product gas mixture to a second catalytic reaction zone where the partial reduction of the SO2 component to elemental sulfur and CO2 is carried out.Type: GrantFiled: January 12, 2005Date of Patent: November 21, 2006Assignee: Conocophillips CompanyInventors: Alfred E. Keller, Sriram Ramani
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Patent number: 6887447Abstract: The present invention provides a method for inhibiting the evolution of H2S from sulfhydryl compounds in molten sulfur by using scavenging agents such as anhydrides and polymers thereof, conjugated ketones, carbonates, epoxides, monoesters and diesters of unsaturated dicarboxylic acids and polymers of these esters, and the like and mixtures thereof. In one embodiment, it is preferred that the scavenging agent is in liquid form at contact temperature with the molten sulfur. In another embodiment, the scavenging agent may be atomized into the vapor space over the molten sulfur to contact the sulfur with the agent.Type: GrantFiled: October 17, 2003Date of Patent: May 3, 2005Assignee: Baker Hughes IncorporatedInventors: John A. Schield, Weldon J. Cappel, Jerry J. Weers, Glenn L. Roof
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Patent number: 6800261Abstract: The invention is directed to a process for the catalytic reduction of sulphur dioxide from a gas mixture at least containing 10 vol. % of water, in which process the gas mixture is passed over a sulphur resistant hydrogenation catalyst in sulphidic form, at a space velocity of at least 2000 h−1, in the presence of a reducing component, preferably at least partly consisting of hydrogen, in a molar ratio or reducing component to sulphur dioxide of more than 10 up to 100, at a temperature of 125° C. to 300° C., followed by passing the gas mixture, after the said reduction, through a dry oxidation bed for the oxidation of sulphur compounds, more in particular hydrogen sulphide, to elemental sulphur.Type: GrantFiled: August 12, 2002Date of Patent: October 5, 2004Assignees: Gastec N.V., Jacobs Nederland B.V.Inventors: Johannes Borsboom, Petrus Franciscus Maria Theresia van Nisselrooij
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Patent number: 6790422Abstract: Active alumina catalysts, well suited for the Claus reaction, for the hydrolysis of organosulfur compounds and for catalytically removing objectionable sulfur compounds from gaseous effluents comprised thereof, contain a cocatalytically effective amount of sodium values, such effective amount, expressed by weight of Na2O, ranging from 1,200 ppm to 2,700 ppm.Type: GrantFiled: August 19, 1997Date of Patent: September 14, 2004Assignee: Institut Francais du PetroleInventors: Olivier Legendre, Christophe Nedez
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Publication number: 20040086443Abstract: The present invention provides a method for inhibiting the evolution of H2S from sulfhydryl compounds in molten sulfur by using scavenging agents such as anhydrides and polymers thereof, conjugated ketones, carbonates, epoxides, monoesters and diesters of unsaturated dicarboxylic acids and polymers of these esters, and the like and mixtures thereof. In one embodiment, it is preferred that the scavenging agent is in liquid form at contact temperature with the molten sulfur. In another embodiment, the scavenging agent may be atomized into the vapor space over the molten sulfur to contact the sulfur with the agent.Type: ApplicationFiled: October 17, 2003Publication date: May 6, 2004Inventors: John A. Schield, Weldon J. Cappel, Jerry J. Weers, Glenn L. Roof
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Publication number: 20040071620Abstract: The liquid cooling spray in a gas conditioning chamber is modified by the addition of an alkali to scrub sulfur dioxide and other acid forming gases and a separation unit to remove particles that may contain either unreacted alkali or salts of the acid forming gases. A slurry of fine particles of hydrated lime is injected into the liquid coolant under conditions that result in kernels of controllable size that contain the alkali or salts from reactions with the acid forming gases. The modified cooling liquid provides for a high sulfur dioxide collection efficiency at a low molar ratio of alkali to sulfur, while the specified kernel size range allows for efficient removal of the kernels from the gas.Type: ApplicationFiled: February 28, 2001Publication date: April 15, 2004Inventors: Ronald L. Hawks, James J. Schwab