Patents by Inventor Jiansheng Ding
Jiansheng Ding 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: 11000837Abstract: A catalyst for preparing chlorine gas by hydrogen chloride oxidation, comprising the following components calculated according to mass content based on the total weight of the catalyst: 0.5-20 wt % copper; 2-10 wt % manganese; 0.05-2 wt % boron; 0.01-3 wt % chromium; 0.1-10 wt % rare earth metal; 0.1-10 wt % potassium; and 3-15 wt % titanium; also comprising 0.02-1.1 wt % phosphorus; and 0.03-1.9 wt % iron; the carrier content is 55-90 wt %. In the case of a fluidized bed reactor, the present catalyst can achieve a one-way hydrogen chloride conversion rate of 80-85%. Almost all of the 0-1000 mg/kg of chlorinated benzene contained in hydrogen chloride gas can be converted into CO2 and H2O without generating polychlorinated benzene.Type: GrantFiled: August 5, 2016Date of Patent: May 11, 2021Inventors: Hongke Zhang, Bo Zhou, Zhangwei Zai, Dan Xu, Yu Yao, Yanlong Xu, Dongke Zhao, Jingjing Yang, Jiansheng Ding, Weiqi Hua
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Publication number: 20200370120Abstract: The invention relates to a method for preparing a simulated maternal cfDNA component for non-invasive prenatal testing, using a DNA fragmentation factor to digest a nucleus for simulating a maternal sample cell line, so as to obtain a simulated maternal cfDNA (short nucleic acid fragment) component. The reference material for non-invasive prenatal testing prepared by mixing different chromosome aneuploid cfDNA fragments with the normal chromosome number cfDNA fragments obtained by the present invention provides a method for manufacturing a reference material for internal quality control and external quality assessment. This method of making a reference material by mixing chromosome aneuploid cfDNA fragments and normal chromosome number cfDNA fragments produced with different enzyme digestions is the first case in the art. This method can also be used to make a series of mixed cfDNA sample reference materials for other noninvasive testing.Type: ApplicationFiled: November 27, 2018Publication date: November 26, 2020Inventors: Jinming Li, Jiansheng Ding, Rui Zhang
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Patent number: 10576465Abstract: The present invention relates to a catalyst for producing chlorine by oxidation of hydrogen chloride and a method for preparing the same. The catalyst comprises a support and active ingredients that comprise 1-20 wt % of copper, 0.01-5 wt % of boron, 0.1-10 wt % of alkali metal element(s), 0.1-15 wt % of one or more rare earth elements, and 0-10 wt % of one or more elements selected from magnesium, calcium, barium, manganese, iron, nickel, cobalt, zinc, ruthenium or titanium based on the total weight of the catalyst. The catalyst is prepared by a two-step impregnation method. Comparing with the available catalysts of the same type, the catalyst according to the present invention has greatly improved conversion and stability.Type: GrantFiled: June 13, 2017Date of Patent: March 3, 2020Assignee: Wanhua Chemical Group Co., Ltd.Inventors: Guangquan Yi, Yinchuan Lou, Yi Wan, Xunkun Wu, Weiqi Hua, Jiansheng Ding
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Publication number: 20190337802Abstract: A process of producing chlorine gas by catalytic oxidation of hydrogen chloride including: incorporating an oxidizing agent such as ozone, hydrogen peroxide solution etc. into a gas stream of hydrogen chloride containing impurities, conducting oxidation pretreatment of the gas stream under the action of ultrasonic wave, such that the impurities contained in the gas stream are oxidized; where the gas stream obtained after the oxidation pretreatment is allowed to pass through a separating device, the oxidized impurities in the form of liquid and/or the oxidized impurities in the form of solid are removed from the gas stream so as to obtain a purified gas stream of hydrogen chloride, and thereafter the purified gas stream of hydrogen chloride is well mixed with a gas stream containing molecular oxygen, the resultant gas mixture is preheated to a reaction temperature, and then catalytically oxidized to produce chlorine gas.Type: ApplicationFiled: June 22, 2019Publication date: November 7, 2019Inventors: Jiansheng Ding, Wuxi Luo, Bin Chen, Kunpeng Zhang, Weiqi Hua
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Publication number: 20190291087Abstract: A catalyst for preparing chlorine gas by hydrogen chloride oxidation, comprising the following components calculated according to mass content based on the total weight of the catalyst: 0.5-20 wt % copper; 2-10 wt % manganese; 0.05-2 wt % boron; 0.01-3 wt % chromium; 0.1-10 wt % rare earth metal; 0.1-10 wt % potassium; and 3-15 wt % titanium; also comprising 0.02-1.1 wt % phosphorus; and 0.03-1.9 wt % iron; the carrier content is 55-90 wt %. In the case of a fluidized bed reactor, the present catalyst can achieve a one-way hydrogen chloride conversion rate of 80-85%. Almost all of the 0-1000 mg/kg of chlorinated benzene contained in hydrogen chloride gas can be converted into CO2 and H2O without generating polychlorinated benzene.Type: ApplicationFiled: August 5, 2016Publication date: September 26, 2019Applicant: Wanhua Chemical Group Co., Ltd.Inventors: Hongke Zhang, Bo Zhou, Zhangwei Zai, Dan Xu, Yu Yao, Yanlong Xu, Dongke Zhao, Jingjing Yang, Jiansheng Ding, Weiqi Hua
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Patent number: 10226758Abstract: The present invention relates to a method for preparing catalyst used for preparing chlorine by oxidizing hydrogen chloride. The method is mixing a slurry mainly containing boron and chromium with a slurry mainly containing copper, boron, alkali-metal elements, rare-earth elements, aluminum sol, silica sol, carrier and optionally other metal elements, the mixing temperature being not more than 100° C., and the residence time being not more than 120 minutes, the mixed slurry is successively treated with spray drying, high temperature calcination, so that the catalyst is obtained. The present invention also relates to the catalyst prepared through the method, use of the catalyst used in the process of preparing chlorine by oxidizing hydrogen chloride and a method for preparing chlorine by using the catalyst. The catalyst is used for preparing chlorine by oxidizing hydrogen chloride with oxygen or air in fluidized bed reactor.Type: GrantFiled: January 27, 2014Date of Patent: March 12, 2019Assignee: Wanhua Chemical Group Co., Ltd.Inventors: Yinchuan Lou, Yang Lv, Guangquan Yi, Liangfeng Shao, Hongke Zhang, Weiqi Hua, Jiansheng Ding
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Patent number: 9845281Abstract: Hydroxyethyl (methyl)acrylate is prepared by a process of a combination of a three-stage tubular reactor and a tower reactor, wherein, firstly, a catalyst, a polymerization inhibitor and (methyl) acrylic acid are mixed until the solids are dissolved, then mixed with a part of ethylene oxide and thereafter enter into a first tubular reactor for a reaction, a reaction liquid flowing out from the first tubular reactor is mixed with a certain amount of ethylene oxide and enters into a second tubular reactor for a reaction, a reaction liquid flowing out from the second tubular reactor is then mixed with a certain amount of ethylene oxide and thereafter enters into a third tubular reactor, and a reaction liquid flowing out from the third tubular reactor is then passed through a stage of an adiabatic tower reactor and aged such that a product liquid is obtained from extraction.Type: GrantFiled: July 29, 2014Date of Patent: December 19, 2017Assignee: Wanhua Chemical Group Co., Ltd.Inventors: Junping Li, Haibo Chen, Lichang Zhang, Chunxian Cui, Yuan Li, Weiqi Hua, Jiansheng Ding, Junhua Zhang, Zhaokun Cheng
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Patent number: 9802848Abstract: The invention relates to a method of circular use of waste brine produced in the manufacture process of MDI, comprising the following steps: (1) the waste brine produced in the manufacture process of MDI is subjected to a high-gravity extraction and then to a column extraction, wherein said waste brine contains aniline, diaminodiphenylmethane and polyamine; (2) the waste brine from step (1) is transmitted to a stripping tower for steam stripping; (3) the waste brine from the stripping tower of step (2) and a chemical oxidant are transmitted to an oxidation reactor to which air is blown for aeration; (4) the waste brine after the treatment of step (3) is transmitted to an absorption tower for absorption. The invention makes the salt water have TOC of less than 8 ppm and TN of less than 2.5 ppm and achieves regeneration of resources in the waste brine such as sodium chloride and water and the like for circular use.Type: GrantFiled: September 17, 2009Date of Patent: October 31, 2017Assignee: WANHUA CHEMICAL (NINGBO) CO., LTD.Inventors: Hongke Zhang, Weiqi Hua, Xiaogao Liu, Zhenhua Zhao, Shuchang Sun, Jiansheng Ding, Jianfeng Chen, Pengyuan Zhang, Haikui Zou, Guangwen Chu, Limin Xu
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Publication number: 20170274361Abstract: The present invention relates to a catalyst for producing chlorine by oxidation of hydrogen chloride and a method for preparing the same. The catalyst comprises a support and active ingredients that comprise 1-20 wt % of copper, 0.01-5 wt % of boron, 0.1-10 wt % of alkali metal element(s), 0.1-15 wt % of one or more rare earth elements, and 0-10 wt % of one or more elements selected from magnesium, calcium, barium, manganese, iron, nickel, cobalt, zinc, ruthenium or titanium based on the total weight of the catalyst. The catalyst is prepared by a two-step impregnation method. Comparing with the available catalysts of the same type, the catalyst according to the present invention has greatly improved conversion and stability.Type: ApplicationFiled: June 13, 2017Publication date: September 28, 2017Inventors: Guangquan Yi, Yinchuan Lou, Yi Wan, Xunkun Wu, Weiqi Hua, Jiansheng Ding
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Publication number: 20170183288Abstract: Hydroxyethyl (methyl)acrylate is prepared by a process of a combination of a three-stage tubular reactor and a tower reactor, wherein, firstly, a catalyst, a polymerization inhibitor and (methyl) acrylic acid are mixed until the solids are dissolved, then mixed with a part of ethylene oxide and thereafter enter into a first tubular reactor for a reaction, a reaction liquid flowing out from the first tubular reactor is mixed with a certain amount of ethylene oxide and enters into a second tubular reactor for a reaction, a reaction liquid flowing out from the second tubular reactor is then mixed with a certain amount of ethylene oxide and thereafter enters into a third tubular reactor, and a reaction liquid flowing out from the third tubular reactor is then passed through a stage of an adiabatic tower reactor and aged such that a product liquid is obtained from extraction.Type: ApplicationFiled: July 29, 2014Publication date: June 29, 2017Applicant: Wanhua Chemical Group Co., Ltd.Inventors: Junping Li, Haibo Chen, Lichang Zhang, Chunxian Cui, Yuan Li, Weiqi Hua, Jiansheng Ding, Junhua Zhang, Zhaokun Cheng
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Publication number: 20170001178Abstract: The present invention relates to a method for preparing catalyst used for preparing chlorine by oxidizing hydrogen chloride. The method is mixing a slurry mainly containing boron and chromium with a slurry mainly containing copper, boron, alkali-metal elements, rare-earth elements, aluminum sol, silica sol, carrier and optionally other metal elements, the mixing temperature being not more than 100° C., and the residence time being not more than 120 minutes, the mixed slurry is successively treated with spray drying, high temperature calcination, so that the catalyst is obtained. The present invention also relates to the catalyst prepared through the method, use of the catalyst used in the process of preparing chlorine by oxidizing hydrogen chloride and a method for preparing chlorine by using the catalyst. The catalyst is used for preparing chlorine by oxidizing hydrogen chloride with oxygen or air in fluidized bed reactor.Type: ApplicationFiled: January 27, 2014Publication date: January 5, 2017Applicants: Wanhua Chemical Group Co., Ltd., Wanhua Chemical (Ningbo) Co., Ltd.Inventors: Yinchuan Lou, Yang Lv, Guangquan Yi, Liangfeng Shao, Hongke Zhang, Weiqi Hua, Jiansheng Ding
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Patent number: 9168515Abstract: The invention relates to a catalyst for selective synthesis of high-quality gasoline fractions from syngas and the preparation method of the catalyst. This catalyst consists of cobalt, a promoter and molecular sieve, wherein cobalt is presented in an amount of 1-30%, the promoter is represented in an amount of 0.01-5% and the balance is molecular sieve based on the weight of the catalyst. This catalyst provides superior selectivity for C5-C11 isoparaffins and relatively lower selectivity for wax-type hydrocarbons with more than 20 carbon atoms. Thereof, this catalyst can be used for the synthesis of high-quality gasoline and is good at preventing catalyst coking. Besides, the invention provides a preparation method of the catalyst.Type: GrantFiled: April 2, 2011Date of Patent: October 27, 2015Assignee: Wanhua Industrial Group Co., Ltd.Inventors: Ye Wang, Jincan Kang, Lei Zhang, Qinghong Zhang, Kang Cheng, Qingge Zhai, Jiansheng Ding, Weiqi Hua, Yinchuan Lou
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Patent number: 9138717Abstract: Disclosed is a rapid mixing reactor, comprising a first feed-in passage housing, a reactor housing, a second feed-in passage, a hollow blade-wheel feed distributor, a rotation shaft, and a first feed distributor, wherein the first feed-in passage housing and the reactor housing are constructed coaxially and communicated with each other; the second feed-in passage, the hollow blade-wheel feed distributor and the rotation shaft each are fixed in connection with each other in the sequence along the central axis of the reactor; the hollow blade-wheel feed distributor is located within the reactor housing and rotates axially under the driving force of the rotation shaft; the second feed-in passage is connected with the hollow blade-wheel feed distributor; the first feed-in passage housing is set up with at least one first feed-in inlet therein; the reactor housing is set up with at least one reaction liquid outlet at its distal end; and the first feed distributor and the hollow blade-wheel feed distributor are proType: GrantFiled: December 29, 2010Date of Patent: September 22, 2015Assignee: WANHUA CHEMICAL GROUP CO., LTDInventors: Jiansheng Ding, Dezhen Sun, Weiqi Hua, Qingle Hou, Wenbo Wang, Xueli Yu
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Publication number: 20150037243Abstract: A process of producing chlorine gas by catalytic oxidation of hydrogen chloride including: incorporating an oxidizing agent such as ozone, hydrogen peroxide solution etc.Type: ApplicationFiled: May 26, 2012Publication date: February 5, 2015Applicants: WANHUA CHEMICAL (NINGBO) CO., LTD., WANHUA CHEMICAL GROUP CO., LTD.Inventors: Jiansheng Ding, Wuxi Luo, Bin Chen, Kunpeng Zhang, Weiqi Hua
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Publication number: 20140018232Abstract: The invention relates to a catalyst for selective synthesis of high-quality gasoline fractions from syngas and the preparation method of the catalyst. This catalyst consists of cobalt, a promoter and molecular sieve, wherein cobalt is presented in an amount of 1-30%, the promoter is represented in an amount of 0.01-5% and the balance is molecular sieve based on the weight of the catalyst. This catalyst provides superior selectivity for C5-C11 isoparaffins and relatively lower selectivity for wax-type hydrocarbons with more than 20 carbon atoms. Thereof, this catalyst can be used for the synthesis of high-quality gasoline and is good at preventing catalyst coking. Besides, the invention provides a preparation method of the catalyst.Type: ApplicationFiled: April 2, 2011Publication date: January 16, 2014Inventors: Ye Wang, Jincan Kang, Lei Zhang, Qinghong Zhang, Kang Cheng, Qingge Zhai, Jiansheng Ding, Weiqi Hua, Yinchuan Lou
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Publication number: 20130288884Abstract: The present invention relates to a catalyst for producing chlorine by oxidation of hydrogen chloride and a method for preparing the same. The catalyst comprises a support and active ingredients that comprise 1-20 wt % of copper, 0.01-5 wt % of boron, 0.1-10 wt % of alkali metal element(s), 0.1-15 wt % of one or more rare earth elements, and 0-10 wt % of one or more elements selected from magnesium, calcium, barium, manganese, iron, nickel, cobalt, zinc, ruthenium or titanium based on the total weight of the catalyst. The catalyst is prepared by a two-step impregnation method. Comparing with the available catalysts of the same type, the catalyst according to the present invention has greatly improved conversion and stability.Type: ApplicationFiled: June 3, 2011Publication date: October 31, 2013Applicants: NINGBO WANHUA POLYURETHANES CO., LTD., WANHUA CHEMICAL GROUP CO., LTD.Inventors: Guangquan Yi, Yinchuan Lou, Yi Wan, Xunkun Wu, Weiqi Hua, Jiansheng Ding
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Publication number: 20130178596Abstract: Disclosed is a rapid mixing reactor, comprising a first feed-in passage housing, a reactor housing, a second feed-in passage, a hollow blade-wheel feed distributor, a rotation shaft, and a first feed distributor, wherein the first feed-in passage housing and the reactor housing are constructed coaxially and communicated with each other; the second feed-in passage, the hollow blade-wheel feed distributor and the rotation shaft each are fixed in connection with each other in the sequence along the central axis of the reactor; the hollow blade-wheel feed distributor is located within the reactor housing and rotates axially under the driving force of the rotation shaft; the second feed-in passage is connected with the hollow blade-wheel feed distributor; the first feed-in passage housing is set up with at least one first feed-in inlet therein; the reactor housing is set up with at least one reaction liquid outlet at its distal end; and the first feed distributor and the hollow blade-wheel feed distributor are proType: ApplicationFiled: December 29, 2010Publication date: July 11, 2013Applicant: YANTAI WANHUA POLYURETHANES CO., LTD.Inventors: Jiansheng Ding, Dezhen Sun, Weiqi Hua, Qingle Hou, Wenbo Wang, Xueli Yu
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Patent number: 8333927Abstract: The present invention relates to a hole-jetting type reactor and its applications, in particular to a process for the production of isocyanates by the phosgenation of aliphatic or aromatic diamines or triamines in the gas phase using this reactor. The present invention achieves a good mixing and reacting result of the gas-phase phosgenation reaction at a high temperature by improving the mixing of reactants in the reactor to reduce the possibility of forming swirls and eliminate negative pressure produced at a local jet area, which can finally reduce back-mixing and formation of solid by-products.Type: GrantFiled: August 21, 2007Date of Patent: December 18, 2012Assignee: Ningbo Wanhua Polyurethanes Co., Ltd.Inventors: Jiansheng Ding, Yong hua Shang, Deqiang Ma, Jingquan Hao, Peicheng Luo, Shuang Hu
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Patent number: D1017375Type: GrantFiled: June 21, 2023Date of Patent: March 12, 2024Inventor: Jiansheng Ding
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Patent number: D1024777Type: GrantFiled: January 28, 2020Date of Patent: April 30, 2024Assignee: Johnson & Johnson Consumer Inc.Inventors: Shenhui Chen, Jiansheng Dong, Aihua Ding