Patents by Inventor Guizhi Wang

Guizhi Wang 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).

  • Patent number: 11352572
    Abstract: The present invention provides a low viscosity poly-?-olefin lubricating oil and a synthesis method thereof. The method comprises: (1) the ?-olefin raw material is subjected to dehydration treatment so that the water content in the raw material is ?10 ppm; (2) a reaction of the dehydration treated ?-olefin raw material is carried out in the presence of a complex catalyst and gaseous BF3 to obtain a reaction product, wherein the pressure of the gaseous BF3 is 0.01 to 1 MPa; (3) the reaction product obtained in step (2) is sequentially subjected to flash distillation, gas stripping, centrifugation, and washing treatment to obtain an intermediate product; (4) the intermediate product obtained in step (3) is subjected to distillation under reduced pressure to separate the unreacted ?-olefin raw material and ?-olefin dimers, and the remaining heavy fractions are subjected to hydrogenation saturation treatment followed by fractionation and cutting-off.
    Type: Grant
    Filed: October 24, 2019
    Date of Patent: June 7, 2022
    Assignee: PETROCHINA COMPANY LIMITED
    Inventors: Hongling Chu, Sihan Wang, Kecun Ma, Xianming Xu, Libo Wang, Guizhi Wang, Yan Jiang, Legang Feng, Yulong Wang, Enhao Sun, Hongliang Huo, Tong Liu, Yali Wang, Xiuhui Wang, Han Gao, Yuanyuan Cao, Fengrong Wang, Weihong Guan, Ruhai Lin, Xuemei Han, Yunguang Han, Fuling Huang, Buwei Yu
  • Publication number: 20200190409
    Abstract: The present invention provides a low viscosity poly-?-olefin lubricating oil and a synthesis method thereof. The method comprises: (1) the ?-olefin raw material is subjected to dehydration treatment so that the water content in the raw material is ?10 ppm; (2) a reaction of the dehydration treated ?-olefin raw material is carried out in the presence of a complex catalyst and gaseous BF3 to obtain a reaction product, wherein the pressure of the gaseous BF3 is 0.01 to 1 MPa; (3) the reaction product obtained in step (2) is sequentially subjected to flash distillation, gas stripping, centrifugation, and washing treatment to obtain an intermediate product; (4) the intermediate product obtained in step (3) is subjected to distillation under reduced pressure to separate the unreacted ?-olefin raw material and ?-olefin dimers, and the remaining heavy fractions are subjected to hydrogenation saturation treatment followed by fractionation and cutting-off.
    Type: Application
    Filed: October 24, 2019
    Publication date: June 18, 2020
    Applicant: PETROCHINA COMPANY LIMITED
    Inventors: Hongling CHU, Sihan WANG, Kecun MA, Xianming XU, Libo WANG, Guizhi WANG, Yan JIANG, Legang FENG, Yulong WANG, Enhao SUN, Hongliang HUO, Tong LIU, Yali WANG, Xiuhui WANG, Han GAO, Yuanyuan CAO, Fengrong WANG, Weihong GUAN, Ruhai LIN, Xuemei HAN, Yunguang HAN, Fuling HUANG, Buwei YU
  • Patent number: 9440227
    Abstract: A method for preparing catalyst coating on a metal base plate comprising: thermal-spraying a layer of ?-aluminum oxide nano-particles on a metal base plate using a high temperature flame powder spray gun, at a temperature of 2500-3500° C. and a pressure of 0.2-1.2 MPa; coating an aluminum sol, the weight concentration of the aluminum sol aqueous solution being 2-30%, at a pH of 0.5-4, the drying temperature being 50-150° C., the drying time being 0.5-24 hours, the calcination temperature being 200-1200° C., and the calcination time being 0.5-24 hours; immersing in an active component, the immersing temperature being 20-120° C., the duration being 0.5-24 hours, the drying temperature being 50-150° C., the drying time being 0.5-24 hours, the calcination temperature being 200-1200° C., and the calcination time being 0.5-24 hours. The method is suitable for the preparation of various catalyst coatings with active components.
    Type: Grant
    Filed: November 28, 2011
    Date of Patent: September 13, 2016
    Assignees: Petrochina Company Limited, Tsinghua University
    Inventors: Zhongtao Zhang, Yi Cheng, Xuli Zhai, Yong Jin, Jianzhong Li, Guizhi Wang, Zhixiang Zhang, Huimin Yuan, Fengrong Wang, Xianming Xu, Shubao Wan, Fangwei Li, Fengbo Ma, Jing Wei, Jina Zhao, Lijun Liu, Dawei Zhang
  • Patent number: 9248430
    Abstract: A method for synthesis of 1-decene oligomer is provided, wherein 1-decene is polymerized at 80-120° C., 0.8-1.4 MPa in the presence of aluminum trichloride catalyst supported on gamma-alumina and n-hexane solvent where the volume ratio of 1-decene to n-hexane is 3:8-4:1. The catalyst is treated as follows: impregnating gamma-alumina carrier in 0.5-2.0 M of hydrochloric acid, sulfuric acid, nitric acid or mixtures thereof, then vacuum drying at 80-100° C. and calcining at 400-800° C.; dissolving 5-10 g of anhydrous aluminum trichloride in 100 ml of tetrachloromethane, trichloromethane or dichloromethane solvent; adding the obtained solution into 10-20 g of activated alumina carrier and obtaining the catalyst after vacuum drying. The conversion of 1-decene is 50 wt % or more. The oligomer has a kinematic viscosity at 40° C. of 6.0-25 mm2/s and a viscosity index of 160-262.
    Type: Grant
    Filed: July 22, 2010
    Date of Patent: February 2, 2016
    Assignees: PETROCHINA COMPANY LIMITED, EAST CHINA UNIVERSITY OF SCIENCE
    Inventors: Fuling Huang, Puke Mi, Sihan Wang, Jinhua Qian, Qian Chen, Sheng Xu, Jianzhong Li, Gang Wang, Baojun Zhang, Min Liu, Guizhi Wang, Xuemei Han, Jiabo Qu, Panfeng Lu, Shukun Sun, Xiuhui Wang, Yuxin Gao, Deshun Zhang, Ling Jiang, Buwei Yu, Libo Wang, Yali Wang, Lingting Fan, Peng Wei, Wei Liu, Guiyue Guo
  • Publication number: 20130137569
    Abstract: A method for preparing catalyst coating on a metal base plate comprising: thermal-spraying a layer of a-aluminum oxide nano-particles on a metal base plate using a high temperature flame powder spray gun, at a temperature of 2500-3500° C. and a pressure of 0.2-1.2 MPa; coating an aluminum sol, the weight concentration of the aluminum sol aqueous solution being 2-30%, at a pH of 0.5-4, the drying temperature being 50-150° C., the drying time being 0.5-24 hours, the calcination temperature being 200-1200° C., and the calcination time being 0.5-24 hours; immersing in an active component, the immersing temperature being 20-120° C., the duration being 0.5-24 hours, the drying temperature being 50-150° C., the drying time being 0.5-24 hours, the calcination temperature being 200-1200° C., and the calcination time being 0.5-24 hours. The method is suitable for the preparation of various catalyst coatings with active components.
    Type: Application
    Filed: November 28, 2011
    Publication date: May 30, 2013
    Inventors: Zhongtao Zhang, Yi Cheng, Xuli Zhai, Yong Jin, Jianzhong Li, Guizhi Wang, Zhixiang Zhang, Huiming Yuan, Fengrong Wang, Xianming Xu, Shubao Wan, Fangwei Li, Fengbo Ma, Jing Wei, Jina Zhao, Lijun Liu, Dawei Zhang
  • Publication number: 20130090508
    Abstract: Disclosed is a method for preparing 1-octene in the presence of a catalyst system for ethylene oligomerization, which includes: premixing a part of ethylene gas as raw material with a solvent, mixing with the components a+b, c and d of the catalyst system, and then sending in a reactor; directly sending the rest of ethylene gas in the reactor; discharging the resultant liquid from the upper part of the reactor into an overflow channel; adding a catalysis stopping agent to the overflow channel; and then separating the resultant liquid. The advantages of the method are high selectivity of 1-octene and high catalytic activity.
    Type: Application
    Filed: June 3, 2011
    Publication date: April 11, 2013
    Applicant: PETROCHINA COMPANY LIMITED
    Inventors: Gang Wang, Baojun Zhang, Jianzhong Li, Sihan Wang, Jiabo Qu, Defu He, Guizhi Wang, Qian Chen, Buwei Yu, Deshun Zhang, Libo Wang, Yali Wang, Liwei Liang, Yuxin Gao, Jie Li, Wenchao Zhang, Hua Li, Xiaoyu Gao, Shouhui Zha, Fuling Huang, Jing Wei, Xiuhui Wang, Xiangmin Yu, Jingying Zhao, Xuemei Han, Chunfeng Song, Junfeng Wei, Rui Meng
  • Publication number: 20120232321
    Abstract: A method for synthesis of 1-decene oligomer is provided, wherein 1-decene is polymerized at 80-120° C., 0.8-1.4 MPa in the presence of aluminum trichloride catalyst supported on gamma-alumina and n-hexane solvent where the volume ratio of 1-decene to n-hexane is 3:8-4:1. The catalyst is treated as follows: impregnating gamma-alumina carrier in 0.5-2.0 mol of hydrochloric acid, sulfuric acid, nitric acid or mixtures thereof, then vacuum drying at 80-100° C. and calcining at 400-800° C.; dissolving 5-10 g of anhydrous aluminum trichloride in 100 ml of tetrachloromethane, trichloromethane or dichloromethane solvent; adding the obtained solution into 10-20 g of activated alumina carrier and obtaining the catalyst after vacuum drying. The conversion rate of 1-decene is 50 wt % or more. The oligomer has a kinematic viscosity at 40° C. of 6.0-25 mm2/s and a viscosity index of 160-262.
    Type: Application
    Filed: July 22, 2010
    Publication date: September 13, 2012
    Applicant: PETROCHINA COMPANY LIMITED
    Inventors: Fuling Huang, Puke Mi, Sihan Wang, Jinhua Qian, Qian Chen, Sheng Xu, Jianzhong Li, Gang Wang, Baojun Zhang, Min Liu, Guizhi Wang, Xuemei Han, Jiabo Qu, Panfeng Lu, Shukun Sun, Xiuhui Wang, Yuxin Gao, Deshun Zhang, Ling Jiang, Buwei Yu, Libo Wang, Yali Wang, Lingting Fan, Peng Wei, Wei Liu, Guiyue Guo
  • Patent number: 7786336
    Abstract: The present invention relates to a catalyst composition for ethylene oligomerization and the use thereof. Such catalyst composition includes chromium compound, ligand containing P and N, activator and accelerator; wherein the chromium compound is selected from the group consisting of acetyl acetone chromium, THF-chromium chloride and Cr(2-ethylhecanoate)3; general formula of the ligand containing P and N is shown as: in which R1, R2, R3 and R4 are phenyl, benzyl, or naphthyl. R5 is isopropyl, butyl, cyclopropyl, cyclopentyl, cyclohexyl or fluorenyl; the activatior is methyl aluminoxane, ethyl aluminoxane, propyl aluminoxane and/or butyl aluminoxane; the accelerator is selected from the group consisting of 1,1,2,2,-tetrachloroethane, 1,1,2,2-tetrabromoethane, 1,1,2,2-tetrafluoroethane, and compounds having a formula of X1R6X2, in which X1 and X2 are F, Cl, Br, I or alkoxyl, R6 is alkylene or arylene group; the molar ratio of chromium compound, ligand containing P and N, activator and accelerator is 1:0.
    Type: Grant
    Filed: March 9, 2007
    Date of Patent: August 31, 2010
    Assignee: Petrochina Company Limited
    Inventors: Baojun Zhang, Tao Jiang, Jianzhong Li, Lihua Xing, Yingnan Ning, Shukun Sun, Dongting Kuang, Yongcheng Sun, Yunguang Han, Qian Chen, Hongxia Chen, Deshun Zhang, Yulong Li, Yongjun Zhang, Huimin Yuan, Sihan Wang, Guizhi Wang, Jingyuan Zhang
  • Publication number: 20070232481
    Abstract: The present invention relates to a catalyst composition for ethylene oligomerization and the use thereof. Such catalyst composition includes chromium compound, ligand containing P and N, activator and accelerator; wherein the chromium compound is selected from the group consisting of acetyl acetone chromium, THF-chromium chloride and/or Cr(2-ethylhecanoate)3; general formula of the ligand containing P and N is shown as: in which R1, R2, R3 and R4 are phenyl, benzyl, or naphthyl. R5 is isopropyl, butyl, cyclopropyl, cyclopentyl, cyclohexyl or fluorenyl; the activatior is methyl aluminoxane, ethyl aluminoxane, propyl aluminoxane and/or butyl aluminoxane; general formula of the accelerator is X1R6X2, in which X1 and X2 are F, Cl, Br, I or alkoxyl, R6 is alkyl or aryl; the molar ratio of a, b, c and d is 1:0.5˜10:50˜3000:0.5˜10.
    Type: Application
    Filed: March 9, 2007
    Publication date: October 4, 2007
    Inventors: Baojun Zhang, Tao Jiang, Jianzhong Li, Lihua Xing, Yingnan Ning, Shukun Sun, Dongting Kuang, Yongcheng Sun, Yunguang Han, Qian Chen, Hongxia Chen, Deshun Zhang, Yulong Li, Yongjun Zhang, Huimin Yuan, Sihan Wang, Guizhi Wang, Jingyuan Zhang
  • Patent number: 5525320
    Abstract: Processes for the direct manufacture of nitride powders suitable for low temperature sintering are provided. An elemental vapor is contacted with a nitriding gas at temperatures between 1400 and 1973 K and atmospheric pressure to produce nitride powder.
    Type: Grant
    Filed: July 11, 1994
    Date of Patent: June 11, 1996
    Assignee: University of Cincinnati
    Inventors: Sotiris E. Pratsinis, M. Kamal Akhtar, Guizhi Wang, Siddhartha Panda