Patents by Inventor Weimin Yang
Weimin 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: 9079346Abstract: Apparatus and method for preparing laminated nano-composite material. The apparatus comprising: a plasticizing-and-feeding device assembly consisting of n plasticizing-and-feeding devices; a current collector having n inlets, one outlet and a conjunction runner; k laminated composite generators connected in series, wherein each generator comprises one melt inlet channel, m branch laminated runners and one melt outlet channel, while the vicinity of each melt inlet channel is provided with m distributary openings, and each branch laminated runner can make each equal composite melt that flows out from each distributary opening rotate approximately 90 degrees and extend in width as it flows forward, and then join together and form a laminated structure melt, and the laminated structure melt which joins together at the melt outlet channel of the last laminated composite generator has n×mk layers; and a forming device connected in series to the melt outlet channel of the last generator.Type: GrantFiled: May 18, 2012Date of Patent: July 14, 2015Assignee: BEIJING UNIVERSITY OF CHEMICAL TECHNOLOGYInventor: Weimin Yang
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Publication number: 20150119904Abstract: A linear cutting element (1) with an E-shaped guiding element (16) enables the suture and cutting of surgery to be simultaneously conducted when being loaded in a linear cutting anastomat (2). The linear cutting element (1) comprises a knife underlaying plate (10), a nail abutting seat (11), an assembly cover (12), suture nails (13), a nail cartridge (14), a push sheet (15), a guiding element (16), a pin (17) for the guiding element, a cutting knife (18), a knife stand (19), a positioning needle (20), a positioning needle holder (21) and a blank cap (22). The knife underlaying plate (10) and the nail abutting seat (11) are fixedly connected through a front-end groove (101) and rear-end agnails (102, 103) of the knife underlaying plate (10). The nail abutting seat (11) is fixedly connected to the guiding element (16) through the pin (17) for the guiding element.Type: ApplicationFiled: August 31, 2012Publication date: April 30, 2015Applicant: CHANGZHOU KANGDI MEDICAL STAPLER CO., LTD.Inventors: Rong Ji, Weimin Yang, Xingfang Liu, Yuhong Wang, Long Rui
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Patent number: 8962895Abstract: The present invention relates to a method for the production of ethylene glycol using a feedstock comprising an oxalate and a catalyst containing copper and/or a copper oxide, comprising contacting the feedstock with the catalyst in a reactor under the conditions of a temperature in the range from about 170 to about 270° C., a weight hourly space velocity of the oxalate in the range from about 0.2 to about 5 h?1, a molar ratio of hydrogen to the oxalate in the range from about 40:1 to about 200:1 and a reaction pressure in the range from about 1.5 to about 10 MPa, to produce an effluent containing ethylene glycol, in which the reactor is a tube-array reactor using partitioned heat exchange and adopting outer and inner tubes configured in a double-tube structure to facilitate the heat exchange of the catalyst.Type: GrantFiled: February 24, 2012Date of Patent: February 24, 2015Assignees: China Petroleum & Chemical Corporation, Shanghai Research Institute of Petrochemical Technology, SinopecInventors: Juntao Liu, Weimin Yang, Lei Li, Wanmin Wang, Linna Zhang, Haifeng Song
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Patent number: 8921592Abstract: A process of producing oxalate by CO gas phase method includes the following steps: a) introducing nitrite salt, water and an inorganic acid first into a reactor I to produce a NO containing effluent I; and separating the resultant effluent to obtain the effluent II of NO; b) introducing the effluent II of NO, a C1-C4 alkanol and oxygen into a reactor II to be subjected to the reaction, and separating the resultant effluent to obtain the effluent IV of C1-C4 alkyl nitrites; c) introducing the effluent IV of C1-C4 alkyl nitrites and a CO gas stream into a coupling reactor where they are reacted to produce a NO containing effluent VI. The reactor I and/or the reactor II are preferably rotating supergravity reactors. Therefore, the process is applicable to the industrial production of oxalate by CO gas phase method.Type: GrantFiled: June 9, 2011Date of Patent: December 30, 2014Assignees: China Petroleum & Chemical Corporation, Shanghai Research Institute of Petrochemical Technology, SINOPECInventors: Weimin Yang, Juntao Liu, Wanmin Wang, Lei Li
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Publication number: 20140221719Abstract: The present disclosure provides a premixer for at least two gases, comprising: a tabular body having a closed end and an opposite, open end; a first flow passage for receiving a first gas, the first flow passage axially extending through the closed end into the tabular body in a sealable manner; a conical tube arranged in the tabular body, wherein a small end of the conical tube communicates with the first flow passage, and a large end of the conical tube extends toward the open end with an edge thereof being fixed to an inner wall of the tabular body, thereby defining a sealed distribution chamber between the tabular body and the conical tube; and a second flow passage arranged on a side portion of the tabular body for receiving a second gas, wherein the second flow passage communicates with the distribution chamber, so that the second gas can be introduced into said conical tube via the distribution chamber in a substantially radial manner.Type: ApplicationFiled: January 27, 2014Publication date: August 7, 2014Applicants: Shanghai Research Institute of Petrochemical Technology, SINOPEC, CHINA PETROLEUM & CHEMICAL CORPORATIONInventors: Weimin YANG, Wenjie LIU, Yunqun HUANG, Yi GUO, Depan SHI
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Publication number: 20130338406Abstract: The present invention relates to a method for the production of ethylene glycol using a feedstock comprising an oxalate and a catalyst containing copper and/or a copper oxide, comprising contacting the feedstock with the catalyst in a reactor under the conditions of a temperature in the range from about 170 to about 270° C., a weight hourly space velocity of the oxalate in the range from about 0.2 to about 5 h?1, a molar ratio of hydrogen to the oxalate in the range from about 40:1 to about 200:1 and a reaction pressure in the range from about 1.5 to about 10 MPa, to produce an effluent containing ethylene glycol, in which the reactor is a tube-array reactor using partitioned heat exchange and adopting outer and inner tubes configured in a double-tube structure to facilitate the heat exchange of the catalyst.Type: ApplicationFiled: February 24, 2012Publication date: December 19, 2013Applicants: SHANGHAI RESEARCH INSTITUTE OF PETROCHEMICAL TECHNOLOGY, SINOPEC, CHINA PETROLEUM & CHEMICAL CORPORATIONInventors: Juntao Liu, Weimin Yang, Lei Li, Wanmin Wang, Linna Zhang, Haifeng Song
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Publication number: 20130331617Abstract: A process for producing ethylene glycol includes contacting an oxalate with a fluidized bed catalyst under the following conditions: a reaction temperature of from about 170 to about 270° C., a weight space velocity of oxalate of from about 0.2 to about 7 hours?1, a hydrogen/ester molar ratio of about 20˜200:1, a reaction pressure of from about 1.5 to about 10 MPa, and a reaction temperature difference T of from about 1 to about 15° C. The fluidized bed catalyst includes: a) from about 5 to about 80 parts by weight of copper and the oxide thereof, b) from about 10 to about 90 parts by weight of at least one carrier selected from silica, molecular sieve or alumina, c) from about 0.01 to about 30 parts by weight of bismuth and tungsten metallic elements or the oxides thereof, or cerium and niobium metallic elements or the oxides thereof.Type: ApplicationFiled: February 24, 2012Publication date: December 12, 2013Applicants: Shanghai Research Institute of Petrochemical Technology, Sinopec, China Petroleum & Chemical CorporationInventors: Weimin Yang, Juntao Liu, Wanmin Wang, Jun Kuai
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Patent number: 8519208Abstract: Processes for catalytically synthesizing ethylbenzene from ethanol and benzene comprising: 1) reacting a first mixture comprising ethanol and benzene with at least one catalyst chosen from binder-containing alkylation catalysts and binder-free alkylation catalysts in an alkylation reactor to obtain a second mixture comprising residual benzene, ethylbenzene, diethylbenzene, and water; 2) passing the second mixture successively through a benzene recovery tower, an ethylbenzene recovery tower, and a polyethylbenzene recovery tower to obtain separated water, separated benzene, separated ethylbenzene, and separated diethylbenzene; and 3) reacting a third mixture with at least one transalkylation catalyst in a transalkylation reactor, wherein the third mixture comprises at least some of the separated benzene and at least some of the separated diethylbenzene at a weight ratio ranging from about 2:1 to about 10:1.Type: GrantFiled: June 13, 2011Date of Patent: August 27, 2013Assignees: China Petroleum & Chemical Corporation, Shanghai Research Institute of Petrochemical Technology, SinopecInventors: Weimin Yang, Hongmin Sun, Wenjie Liu, Bin Zhang, Zhenhao Shen, Mingyao Huan, Hongyu Zhang
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Patent number: 8476469Abstract: A process of producing C1-C4 alkyl nitrite, comprising the following steps: a) firstly feeding nitrogen oxide and oxygen into Reactor I, contacting with an aluminosilicate catalyst, and reacting to produce an effluent I containing NO2 and unreacted NO; b) feeding the effluent I and C1-C4 alkanol into Reactor II, and reacting to produce an effluent II containing C1-C4 alkyl nitrite; and c) separating the effluent II containing C1-C4 alkyl nitrite to obtain C1-C4 alkyl nitrite; wherein reactor I is a fixed bed reactor, and Reactor II is a rotating high-gravity reactor; said nitrogen oxide in step a) is NO, or a mixed gas containing NO and one or more of N2O3 and NO2, wherein the molar number of NO is greater than that of NO2, if any; and the molar ratio of NO in nitrogen oxide to oxygen is 4-25:1.Type: GrantFiled: April 14, 2011Date of Patent: July 2, 2013Assignees: China Petroleum & Chemical Corporation, Shanghai Research Institute of Petrochemical Technology SINOPECInventors: Juntao Liu, Weimin Yang, Wanmin Wang, Linna Zhang
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Publication number: 20130079549Abstract: A process of producing oxalate by CO gas phase method includes the following steps: a) introducing nitrite salt, water and an inorganic acid first into a reactor I to produce a NO containing effluent I; and separating the resultant effluent to obtain the effluent II of NO; b) introducing the effluent II of NO, a C1-C4 alkanol and oxygen into a reactor II to be subjected to the reaction, and separating the resultant effluent to obtain the effluent IV of C1-C4 alkyl nitrites; c) introducing the effluent IV of C1-C4 alkyl nitrites and a CO gas stream into a coupling reactor where they are reacted to produce a NO containing effluent VI. The reactor I and/or the reactor II are preferably rotating supergravity reactors. Therefore, the process is applicable to the industrial production of oxalate by CO gas phase method.Type: ApplicationFiled: June 9, 2011Publication date: March 28, 2013Applicants: Shanghai Research Institute of Petrochemical Technology, Sinopec, China Petroleum & Chemical CorporationInventors: Weimin Yang, Juntao Liu, Wanmin Wang, Lei Li
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Patent number: 8304594Abstract: The present invention provides a process for increasing ethylene and/or propylene yield during conversion of oxygenates using a system comprising a reactor and a regenerator, wherein the reactor comprises a fluidized bed reactor and a riser reactor, which process increases ethylene and/or propylene yield by using a mixture of the deactivated catalyst from the fluidized bed reactor and the regenerated catalyst from the regenerator in the riser reactor for further cracking the C4+ hydrocarbon stream separated from the product stream.Type: GrantFiled: July 17, 2008Date of Patent: November 6, 2012Assignees: China Petroleum & Chemical Corporation, Shanghai Research Institute of Petrochemical Technology SinopecInventors: Zaiku Xie, Guozhen Qi, Weimin Yang, Siqing Zhong
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Patent number: 8178734Abstract: Provided are processes for producing ethylene glycol from oxalate(s), wherein two or more reaction zones in series are used, and oxalate feedstock is fed stagewise, or hydrogen feedstock and optionally a solvent are fed stagewise. The present processes achieve higher selectivity for the product and improved stability of catalysts.Type: GrantFiled: December 18, 2009Date of Patent: May 15, 2012Assignees: China Petroleum & Chemical Corporation, Shanghai Research Institute of Petrochemical Technology SinopecInventors: Juntao Liu, Weimin Yang, Fengxia Sun, Siqing Zhong, Wanmin Wang
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Publication number: 20110306810Abstract: Processes for catalytically synthesizing ethylbenzene from ethanol and benzene comprising: 1) reacting a first mixture comprising ethanol and benzene with at least one catalyst chosen from binder-containing alkylation catalysts and binder-free alkylation catalysts in an alkylation reactor to obtain a second mixture comprising residual benzene, ethylbenzene, diethylbenzene, and water; 2) passing the second mixture successively through a benzene recovery tower, an ethylbenzene recovery tower, and a polyethylbenzene recovery tower to obtain separated water, separated benzene, separated ethylbenzene, and separated diethylbenzene; and 3) reacting a third mixture with at least one transalkylation catalyst in a transalkylation reactor, wherein the third mixture comprises at least some of the separated benzene and at least some of the separated diethylbenzene at a weight ratio ranging from about 2:1 to about 10:1.Type: ApplicationFiled: June 13, 2011Publication date: December 15, 2011Inventors: Weimin Yang, Hongmin Sun, Wenjie Liu, Bin Zhang, Zhenhao Shen, Mingyao Huan, Hongyu Zhang
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Publication number: 20110257424Abstract: A process of producing C1-C4 alkyl nitrite, comprising the following steps: a) firstly feeding nitrogen oxide and oxygen into Reactor I, contacting with an aluminosilicate catalyst, and reacting to produce an effluent I containing NO2 and unreacted NO; b) feeding the effluent I and C1-C4 alkanol into Reactor II, and reacting to produce an effluent II containing C1-C4 alkyl nitrite; and c) separating the effluent II containing C1-C4 alkyl nitrite to obtain C1-C4 alkyl nitrite; wherein reactor I is a fixed bed reactor, and Reactor II is a rotating high-gravity reactor; said nitrogen oxide in step a) is NO, or a mixed gas containing NO and one or more of N2O3 and NO2, wherein the molar number of NO is greater than that of NO2, if any; and the molar ratio of NO in nitrogen oxide to oxygen is 4-25:1.Type: ApplicationFiled: April 14, 2011Publication date: October 20, 2011Applicants: Shanghai Research Institute of Petrochemical Technology SINOPEC, China Petroleum & Chemical CorporationInventors: Juntao LIU, Weimin YANG, Wanmin WANG, Linna ZHANG
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Publication number: 20110127193Abstract: The present invention relates to a catalyst for catalytic cracking fluidized-bed, and the technical problems to be primarily solved by the present invention are high reaction temperature, low cryogenic activity of catalysts and worse selectivity during the preparation of ethylene-propylene by catalytically cracking naphtha. The present invention uses the composition having the chemical formula (on the basis of the atom ratio): AaBbPcOx, so as to magnificently solve said problems. The present invention therefore can be industrially used to produce ethylene and propylene by catalytically cracking naphtha.Type: ApplicationFiled: December 23, 2010Publication date: June 2, 2011Applicants: CHINA PETROLEUM & CHEMICAL CORPORATION, SHANGHAI RESEARCH INSTITUTE OF PETROCHEMICAL TECHNOLOGY SINOPECInventors: Zaiku Xie, Guangwei Ma, Weimin Yang, Hui Yao, Liang Chen
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Publication number: 20100331596Abstract: The present invention provides a process for increasing ethylene and/or propylene yield during conversion of oxygenates using a system comprising a reactor and a regenerator, wherein the reactor comprises a fluidized bed reactor and a riser reactor, which process increases ethylene and/or propylene yield by using a mixture of the deactivated catalyst from the fluidized bed reactor and the regenerated catalyst from the regenerator in the riser reactor for further cracking the C4+ hydrocarbon stream separated from the product stream.Type: ApplicationFiled: July 17, 2008Publication date: December 30, 2010Inventors: Zaiku Xie, Guozhen Qi, Weimin Yang, Siqing Zhong
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Publication number: 20100179356Abstract: Provided are processes for producing ethylene glycol from oxalate(s), wherein two or more reaction zones in series are used, and oxalate feedstock is fed stagewise, or hydrogen feedstock and optionally a solvent are fed stagewise. The present processes achieve higher selectivity for the product and improved stability of catalysts.Type: ApplicationFiled: December 18, 2009Publication date: July 15, 2010Inventors: Juntao LIU, Weimin Yang, Fengxia Sun, Siqing Zhong, Wanmin Wang
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Patent number: 7692056Abstract: The present invention provides a process for producing lower olefins from methanol or dimethyl ether. The technical problem mainly addressed in the present invention is to overcome the defects presented in the prior art including high operation temperature, low yield and selectivity of lower olefins as the target products, and poor stability and short regeneration period of catalyst.Type: GrantFiled: August 15, 2006Date of Patent: April 6, 2010Assignee: Shanghai Research Institute of Petrochemical Technology SinopecInventors: Zaiku Xie, Juntao Liu, Weimin Yang, Siqing Zhong, Xiaofeng Chen
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Patent number: 7692057Abstract: The present invention provides a process for producing lower olefins by catalytic cracking a feedstock comprising an olefins-enriched mixture containing C4 or higher olefins and optionally an organic oxygenate compound. The technical problem mainly addressed in the present invention is to overcome the defects presented in the prior art including low yield and selectivity of lower olefins as the target products, and short regeneration period of catalyst.Type: GrantFiled: August 11, 2006Date of Patent: April 6, 2010Assignees: China Petroleum & Chemical Corporation, Shanghai Research Institute of Petrochemical Technology SinopecInventors: Zaiku Xie, Juntao Liu, Weimin Yang, Siqing Zhong, Yanhui Yuan, Huiming Zhang
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Patent number: 7686942Abstract: A method for preparation of ethylene and propylene by catalytic cracking using a fluid-bed catalyst. The main technical problems to be solved are a relatively high reaction temperature, and low activities and poor selectivities of the catalyst at a low temperature, during the reaction for preparing ethylene and propylene by catalytically cracking naphtha. The fluid-bed catalyst is a composition of the chemical formula Mo1.0VaAbBcCdOx based on stoichiometric ratio. The method using the fluid-bed catalyst has satisfactorily solved the above-mentioned problems, and is useful in the industrial production of ethylene and propylene by catalytically cracking naphtha.Type: GrantFiled: February 3, 2009Date of Patent: March 30, 2010Assignees: Shanghai Research Institute of Petrochemical Technology Sinopec, China Petroleum & Chemical CorporationInventors: Zaiku Xie, Hui Yao, Weimin Yang, Guangwei Ma, Jingxian Xiao, Liang Chen