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公开(公告)号：US12116273B2
公开(公告)日：2024-10-15
申请号：US17415259
申请日：2019-12-09
申请人： Universite Mohammed VI Polytechnique , Universite Hassan 1ER De Settat , Universite Hassan II De Casablanca
IPC分类号： C01B17/02
CPC分类号： C01B17/0264 , C01P2002/72 , C01P2002/88 , C01P2004/03
摘要： The objective of the invention is the development of a new process for producing sulfur from phosphogypsum. During this process, the phosphogypsum is mixed with a source of carbon and hydrogen forming a slurry after mixing. This source of carbon and hydrogen is a natural or synthetic organic polymer, as an example that is not limiting, biomass, used tires or plastic, kerogen or tars. The granules undergo a heat treatment (100 to 150° C.) to evaporate the mixing water.
The product obtained undergoes a heat treatment (550 to 900° C.) under a neutral atmosphere and/or partially oxidizing. The generated gases are bubbled in deionized water, sodium hypochlorite solution or a basic aqueous solution which allows the trapping, among others, of organosulfur molecules and the precipitation of sulfur S8. Non-entrapped gases are recovered to extract volatile sulfur products.-
公开(公告)号：US11997937B2
公开(公告)日：2024-05-28
申请号：US17676708
申请日：2022-02-21
发明人： Dale W. Collins , Paolo Fantini , Lorenzo Fratin , Enrico Varesi
CPC分类号： H10N70/8822 , C01B17/0243 , C01B19/04 , H10B63/10 , H10B63/80
摘要： Methods, systems, and devices for chalcogenide memory device compositions are described. A memory cell may use a chalcogenide material having a composition as described herein as a storage materials, a selector materials, or as a self-selecting storage material. A chalcogenide material as described herein may include a sulfurous component, which may be completely sulfur (S) or may be a combination of sulfur and one or more other elements, such as selenium (Se). In addition to the sulfurous component, the chalcogenide material may further include one or more other elements, such as germanium (Ge), at least one Group-III element, or arsenic (As).
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公开(公告)号：US11975966B2
公开(公告)日：2024-05-07
申请号：US16963146
申请日：2020-01-20
申请人： Phil Ho Ahn
发明人： Phil Ho Ahn
CPC分类号： C01B17/0243 , C01B17/0221 , C04B28/04 , C04B2235/42
摘要： Provided are modified sulfur and a production method thereof, the modified sulfur including sulfur and a modifier, wherein the modifier is an unsaturated fatty acid-based modifier.
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4.发明授权公开(公告)号：US11807527B2
公开(公告)日：2023-11-07
申请号：US17606607
申请日：2020-04-29
申请人： HALDOR TOPSØE
发明人： Morten Thellefsen , Martin Møllerhøj , Mads Lykke
IPC分类号： C01B17/04 , C01B17/76 , C01B17/80 , B01D53/14 , B01D53/86 , F23G7/06 , C01B17/02 , B01J19/00 , B01J19/24 , C01B17/775
CPC分类号： C01B17/0404 , B01D53/1481 , B01D53/1493 , B01D53/8615 , B01J19/0013 , B01J19/2405 , B01J19/2465 , C01B17/0253 , C01B17/0447 , C01B17/0452 , C01B17/0456 , C01B17/76 , C01B17/775 , C01B17/80 , C01B17/806 , F23G7/06 , B01D2255/20723 , B01J2219/00157 , C01P2006/80 , F23G2209/14
摘要： A process and a process plant for production of elemental sulfur from a feedstock gas including from 15 vol % to 100 vol % H2S and a stream of sulfuric acid, the process including a) providing a Claus reaction furnace feed stream with a substoichiometric amount of oxygen, b) directing s to a reaction furnace operating at elevated temperature, c) cooling, d) directing to contact a material catalytically active in the Claus reaction, e) withdrawing a Claus tail gas and elemental sulfur, f) directing to a means for sulfur oxidation, g) directing to contact a material catalytically active in SO2 oxidation to SO3, h) converting to concentrated sulfuric acid, i) recycling to the Claus reaction furnace, wherein an amount of combustibles, in the Claus tail gas, is oxidized in the presence of a material catalytically active in sulfur oxidation, at an inlet temperature below 400° C.
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公开(公告)号：US20230339751A1
公开(公告)日：2023-10-26
申请号：US18334960
申请日：2023-06-14
CPC分类号： C01B17/0232 , B01D19/0005 , B01D19/0063
摘要： A method and system for liquid sulfur degassing is disclosed. The method and system generally involve degassing liquid sulfur in a degassing vessel, and the level of the liquid sulfur in the degassing vessel is controlled in the degassing vessel by determining the level of liquid sulfur in the degassing vessel.
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公开(公告)号：US20220055898A1
公开(公告)日：2022-02-24
申请号：US17415259
申请日：2019-12-09
申请人： Universite Mohammed VI Polytechnique , Universite Hassan 1ER De Settat , Universite Hassan II De Casablanca
IPC分类号： C01B17/02
摘要： The objective of the invention is the development of a new process for producing sulfur from phosphogypsum. During this process, the phosphogypsum is mixed with a source of carbon and hydrogen forming a slurry after mixing. This source of carbon and hydrogen is a natural or synthetic organic polymer, as an example that is not limiting, biomass, used tires or plastic, kerogen or tars. The granules undergo a heat treatment (100 to 150° C.) to evaporate the mixing water.
The product obtained undergoes a heat treatment (550 to 900° C.) under a neutral atmosphere and/or partially oxidizing. The generated gases are bubbled in deionized water, sodium hypochlorite solution or a basic aqueous solution which allows the trapping, among others, of organosulfur molecules and the precipitation of sulfur S8. Non-entrapped gases are recovered to extract volatile sulfur products.-
公开(公告)号：US20210198108A1
公开(公告)日：2021-07-01
申请号：US16990422
申请日：2020-08-11
发明人： Yanzhen WANG , Chunmin SONG , Hongling DUAN , An ZHANG , Li GAO
摘要： A method for producing insoluble sulfur, including: heating a sulfur to 200-700° C., quenching it with water, aqueous solution and other solvents, drying and solidifying the resulting substance at 40-80° C. for 3-15 h, to obtain an insoluble sulfur crude product; crushing the crude product in water into particles with a particle size of 50-400 meshes, wherein the water temperature is not higher than 80° C.; pumping the slurry of water and crude product into the upper part of an extraction column, pumping solvent into the lower part thereof; making the water and solvent from the top of the column flow into a separation tank to separate water phase and solvent phase, heating and evaporating the solvent phase to recover solvent and obtain soluble sulfur; heating and evaporating the insoluble sulfur and solvent from the bottom of the column to recover solvent and obtain purified insoluble sulfur.
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公开(公告)号：US11040874B1
公开(公告)日：2021-06-22
申请号：US16905204
申请日：2020-06-18
发明人： James Wasas , Mariavicenta Wasas
IPC分类号： C01B3/04 , C01B3/50 , C01B17/04 , C01B17/02 , B01J6/00 , B01D53/32 , B01D53/22 , B01D71/04 , B01D71/36
摘要： A reactive process for converting hydrogen sulfide into hydrogen gas and sulfur and a reactor for effecting such process.
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公开(公告)号：US11034583B2
公开(公告)日：2021-06-15
申请号：US16034475
申请日：2018-07-13
摘要： Contemplated systems and methods for removing polysulfides and hydrogen sulfide from liquid sulfur of a Claus plant include (a) physically separated steps of catalytic decomposition of polysulfides and gas stripping, or (b) use of the stripping gas as the continuous phase in a packed column with decomposition catalyst to so avoid catalyst attrition.
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公开(公告)号：US20210147306A1
公开(公告)日：2021-05-20
申请号：US16687412
申请日：2019-11-18
摘要： A system and method for storing molten sulfur includes a reinforced concrete vessel, the reinforced concrete vessel being subterranean. The vessel has a floor that is a raft footing formed of reinforced concrete and has a floor interior surface. The vessel also has a ceiling that is a slab of reinforced concrete and has a ceiling interior surface. Sidewalls of the vessel extend between the floor and the ceiling and are formed of reinforced concrete, each sidewall having a sidewall interior surface. A liner is bonded to the floor interior surface, the ceiling interior surface, and each sidewall interior surface. The liner formed of an epoxy vinyl ester resin, and a glass fiber sheet embedded in the epoxy vinyl ester resin.
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