Patents by Inventor Weisheng Yang
Weisheng Yang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11773072Abstract: A method for producing an epoxyalkane includes the step of separating a stream containing an epoxyalkane and an extracting agent in a separation column having a column kettle reboiler. A part of a stream in the column kettle of the separation column enters an extracting agent purifier and is treated to obtain a gas phase light fraction that returns to the separation column and a liquid phase heavy fraction that is subjected to a post-treatment. The method can be used in the industrial production of an epoxyalkane.Type: GrantFiled: November 30, 2018Date of Patent: October 3, 2023Assignees: CHINA PETROLEUM & CHEMICAL CORPORATION, SHANGHAI RESEARCH INSTITUTE OF PETROCHEMICAL TECHNOLOGY SINOPECInventors: Song Hu, Shuai Hu, Weisheng Yang
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Patent number: 11591303Abstract: A method for producing epoxyalkane includes the step of separating, in a separation column, a stream containing epoxyalkane, extractant, and diol. The separation column operates under conditions so as to enable the extractant and the diol to form an azeotrope, and a stream containing extractant and binary azeotrope is extracted from the side-draw of the separation column to liquid-liquid separation. The method can be used for the industrial production of epoxyalkane.Type: GrantFiled: November 30, 2018Date of Patent: February 28, 2023Assignees: CHINA PETROLEUM & CHEMICAL CORPORATION, SHANGHAI RESEARCH INSTITUTE OF PETROCHEMICAL TECHNOLOGY SINOPECInventors: Song Hu, Shuai Hu, Weisheng Yang
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Publication number: 20220410104Abstract: The present invention discloses a gas-liquid bubbling bed reactor, comprising a liquid distributor, a gas distributor located below the liquid distributor, a catalyst bed layer and a catalyst support plate, and an optional interception screen, wherein the top of the reactor is provided with a gas outlet, the reactor is provided with a feed inlet connected to the liquid distributor, a gas inlet connected to the gas distributor, the bottom is provided with a discharge outlet. The present invention further provides a reaction system, which comprises the gas-liquid bubbling bed reactor as the main reactor and a sub-reactor. Through the system and the process of the present invention, the problems of the low conversion rate, the gas binding of the circulating pump, the unstable operation, the low yield of electronic-grade products, and the like in the carbonate synthesis process are solved purposedly targetedly, and the present invention can be applied to related industrial production.Type: ApplicationFiled: October 23, 2020Publication date: December 29, 2022Inventors: Yinchuan LIU, Weisheng YANG, Na LI, Dizong SUN, Wenjun HE
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Patent number: 11091412Abstract: A process for producing ethylene includes the steps of: (1) catalytically cracking a raw material hydrocarbon to obtain a first stream containing propylene; (2) separating the first stream to obtain a C3 component stream; and (3) disproportionating the C3 component stream to obtain an ethylene stream. This process reduces the overall energy consumption of the production process and increases the total yield of the ethylene while obtaining a polymerization-grade ethylene.Type: GrantFiled: September 3, 2018Date of Patent: August 17, 2021Assignees: CHINA PETROLEUM & CHEMICAL CORPORATION, SHANGHAI RESEARCH INSTITUTE OF PETROCHEMICAL TECHNOLOGY SINOPECInventors: Hepan Lu, Yangdong Wang, Weisheng Yang, Jiawei Teng
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Publication number: 20210171484Abstract: A method for producing an epoxyalkane includes the step of separating a stream containing an epoxyalkane and an extracting agent in a separation column having a column kettle reboiler. A part of a stream in the column kettle of the separation column enters an extracting agent purifier and is treated to obtain a gas phase light fraction that returns to the separation column and a liquid phase heavy fraction that is subjected to a post-treatment. The method can be used in the industrial production of an epoxyalkane.Type: ApplicationFiled: November 30, 2018Publication date: June 10, 2021Inventors: Song HU, Shuai HU, Weisheng YANG
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Publication number: 20210163433Abstract: A method for producing epoxyalkane includes the step of separating, in a separation column, a stream containing epoxyalkane, extractant, and diol. The separation column operates under conditions so as to enable the extractant and the diol to form an azeotrope, and a stream containing extractant and binary azeotrope is extracted from the side-draw of the separation column to liquid-liquid separation. The method can be used for the industrial production of epoxyalkane.Type: ApplicationFiled: November 30, 2018Publication date: June 3, 2021Inventors: Song HU, Shuai HU, Weisheng YANG
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Publication number: 20200346996Abstract: A process for producing ethylene includes the steps of: (1) catalytically cracking a raw material hydrocarbon to obtain a first stream containing propylene; (2) separating the first stream to obtain a C3 component stream; and (3) disproportionating the C3 component stream to obtain an ethylene stream. This process reduces the overall energy consumption of the production process and increases the total yield of the ethylene while obtaining a polymerization-grade ethylene.Type: ApplicationFiled: September 3, 2018Publication date: November 5, 2020Inventors: Hepan LU, Yangdong WANG, Weisheng YANG, Jiawei TENG
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Patent number: 10160700Abstract: An apparatus for recycling propylene includes a first propylene recovery column, a flash tank, a second propylene recovery column, and a depropanizing column. The apparatus can effectively solve the problem of high power consumption in the prior art, and can be used for the industrial manufacturing of propylene recovery from a propylene oxide apparatus. A process for recycling and refining propylene also is described.Type: GrantFiled: July 22, 2015Date of Patent: December 25, 2018Assignees: CHINA PETROLEUM & CHEMICAL CORPORATION, SHANGHAI RESEARCH INSTITUTE OF PETROCHEMICAL TECHNOLOGY SINOPECInventors: Weisheng Yang, Mujin Li, De Shi, Zhi He
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Publication number: 20160023965Abstract: An apparatus for recycling propylene includes a first propylene recovery column, a flash tank, a second propylene recovery column, and a depropanizing column. The apparatus can effectively solve the problem of high power consumption in the prior art, and can be used for the industrial manufacturing of propylene recovery from a propylene oxide apparatus. A process for recycling and refining propylene also is described.Type: ApplicationFiled: July 22, 2015Publication date: January 28, 2016Applicants: CHINA PETROLEUM & CHEMICAL CORPORATION, SHANGHAI RESEARCH INSTITUTE OF PETROCHEMICAL TECHNOLOGY SINOPECInventors: Weisheng YANG, Mujin LI, De SHI, Zhi HE
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Patent number: 8084657Abstract: A process of making p-xylcne comprising processing a mixed feedstock containing benzene, toluene, C8 aromatic hydrocarbons, C9 and higher aromatic hydrocarbons, and non-aromatic hydrocarbons through a series of operations and various units, including a C9 and higher aromatic hydrocarbon dealkylation unit, a toluene selective disproportionate unit, an adsorption separation unit, an isomerization unit, and a crystallization separation unit.Type: GrantFiled: November 20, 2009Date of Patent: December 27, 2011Assignees: China Petroleum & Chemical Corporation, Shanghai Research Institute of Petrochemical Technology SinopecInventors: Dejin Kong, Hongli Guo, Luping Zhong, Weisheng Yang, Jian Xiao
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Publication number: 20100228066Abstract: The present invention provides an integrated process for the production of p-xylene, comprising the steps of A) separating a mixed feedstock containing benzene, toluene, C8 aromatic hydrocarbons, C9 and higher aromatic hydrocarbons, and non-aromatic hydrocarbons from a reforming unit, to obtain a first benzene stream, a first toluene stream, a first C8 aromatic hydrocarbon stream, a stream of C9 and higher aromatic hydrocarbons, and a stream of non-aromatic hydrocarbons; B) feeding the stream of C9 and higher aromatic hydrocarbons from step A) to a C9 and higher aromatic hydrocarbon dealkylation unit, where dealkylation reaction occurs in the presence of hydrogen, and separating the reaction effluent to obtain a second benzene stream, a second toluene stream, and a second C8 aromatic hydrocarbon stream; C) feeding both the first toluene stream and the second toluene stream to a toluene selective disproportionation unit, where toluene selective disproportionation reaction occurs in the presence of hydrogen toType: ApplicationFiled: November 20, 2009Publication date: September 9, 2010Applicants: China Petroleum & Chemical Corporation, Shanghai Research Institute of Petrochemical Technology SinopecInventors: Dejin Kong, Hongli Guo, Luping Zhong, Weisheng Yang, Jian Xiao
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Patent number: 6867339Abstract: A complete new process for producing p-xylene is provided to solve the problems in the prior arts of the great amount of benzene as a by-product and the requirement of low content of C10+ heavy aromatics in the feedstock. The process comprises first subjecting benzene and C9+ aromatics to alkyl transfer reaction to produce toluene and C8 aromatics, then conducting toluene selective disproportionation, and molecular sieve adsorptive separation and isomerization of C8 aromatics, to obtain p-xylene.Type: GrantFiled: March 19, 2003Date of Patent: March 15, 2005Assignees: China Petroleum & Chemical Corporation, Shanghai Research Institute of Petrochemical Technology SinopecInventors: Dejin Kong, Weisheng Yang, Hongli Guo, Huaying Li
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Publication number: 20040186330Abstract: A complete new process for producing p-xylene is provided to solve the problems in the prior arts of the great amount of benzene as a by-product and the requirement of low content of C10+ heavy aromatics in the feedstock. The process comprises first subjecting benzene and C9+ aromatics to alkyl transfer reaction to produce toluene and C8 aromatics, then conducting toluene selective disproportionation, and molecular sieve adsorptive separation and isomerization of C8 aromatics, to obtain p-xylene.Type: ApplicationFiled: March 19, 2003Publication date: September 23, 2004Applicant: China Petroleum & Chemical CorporationInventors: Dejin Kong, Weisheng Yang, Hongli Guo, Huaying Li
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Patent number: 6774273Abstract: The present invention relates to a process for the selective disproportionation of toluene and the disproportionation and transalkylation of toluene and C9+ aromatics to mainly solve the problems in the prior arts of the great amount of recycle stream, high energy consumption or harsh requirement for the reaction feedstocks. The present invention has better solved these problems by the technical solution using a process for selective disproportionation of toluene to produce mixed xylenes containing a high concentration of p-xylene, and subsequent disproportionation and transalkylation of C9+ aromatics and toluene to produce benzene and the mixed xylenes which are in the thermodynamic equilibrium. The process is applicable to the industrial production.Type: GrantFiled: October 22, 2002Date of Patent: August 10, 2004Assignee: China Petroleum & Chemical CorporationInventors: Zaiku Xie, Weisheng Yang, Dejin Kong, Dongmao Zhu
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Publication number: 20030130549Abstract: The present invention relates to a process for the selective disproportionation of toluene and the disproportionation and transalkylation of toluene and C9+ aromatics to mainly solve the problems in the prior arts of the great amount of recycle stream, high energy consumption or harsh requirement for the reaction feedstocks. The present invention has better solved these problems by the technical solution using a process for selective disproportionation of toluene to produce mixed xylenes containing a high concentration of p-xylene, and subsequent disproportionation and transalkylation of C9+ aromatics and toluene to produce benzene and the mixed xylenes which are in the thermodynamic equilibrium. The process is applicable to the industrial production.Type: ApplicationFiled: October 22, 2002Publication date: July 10, 2003Applicants: China Petroleum & Chemical Corporation, Shanghai Research Institute of Petrochemical TechnologyInventors: Zaiku Xie, Weisheng Yang, Dejin Kong, Dongmao Zhu