Patents by Inventor Xiqiang Chen

Xiqiang Chen 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: 9861969
    Abstract: The present invention relate to a binderless molecular sieve catalyst and a process for preparing the same, which are mainly useful for solving the problems of the current catalysts, such as lower activity, less pore volume and worse diffusivity. The present invention relates to a novel binderless molecular sieve catalyst, comprising, based on the weight of the catalyst, 90-100 wt. % of a molecular sieve, 0-10 wt. % of a binder, and 0-10 wt. % of an anti-wear agent, wherein said catalyst has a pore volume of 0.1-0.5 ml/g, an average pore diameter of 50-100 nm, and a porosity of 20-40%; the anti-wear agent is selected from the rod or needle-like inorganic materials having a length/diameter ratio of 2-20. Said catalyst has the advantages of higher activity, greater pore volume, larger average pore diameter and porosity, and better diffusivity, and well solves said problems and can be used for the industrial preparation of binderless molecular sieve catalysts.
    Type: Grant
    Filed: August 23, 2011
    Date of Patent: January 9, 2018
    Assignees: CHINA PETROLEUM & CHEMICAL CORPORATION, SHANGHAI RESEARCH INSTITUTE OF PETROCHEMICAL TECHNOLOGY, SINOPEC
    Inventors: Guangwei Ma, Huiming Zhang, Jingxian Xiao, Liang Chen, Xiqiang Chen
  • Patent number: 9783468
    Abstract: A method for producing an aromatic hydrocarbon with an oxygenate as raw material, includes: i) reacting an oxygenate in at least one aromatization reactor to obtain an aromatization reaction product; ii) separating the aromatization reaction product to obtain a gas phase hydrocarbons flow X and a liquid phase hydrocarbons flow Y; iii) after removing gas and/or a part of the oxygenate from the gas phase hydrocarbons flow X, a hydrocarbons flow X1 containing a non-aromatic hydrocarbon is obtained; or after removing gas and/or a part of the oxygenate from the gas phase hydrocarbons flow X, a reaction is conducted in another aromatization reactor and a separation is conducted to obtain a flow X2 containing a non-aromatic hydrocarbon and a flow X3 containing an aromatic hydrocarbon. The flows are further treated.
    Type: Grant
    Filed: October 30, 2014
    Date of Patent: October 10, 2017
    Assignees: CHINA PETROLEUM & CHEMICAL CORPORATION, SHANGHAI RESEARCH INSTITUTE OF PETROCHEMICAL TECHNOLOGY, SINOPEC
    Inventors: Zheming Wang, Weimin Yang, Xiqiang Chen, Jingxian Xiao, Feng Xu
  • Patent number: 9339801
    Abstract: The present invention relates to a catalyst for the conversion of methanol to aromatics and the preparation of the same. The catalyst comprising 85 to 99 parts by weight of a ZSM-5 zeolite, 0.1 to 15 parts by weight of element M1, which is at least one selected from the group consisted of Ag, Zn and Ga, and 0 to 5 parts by weight of element M2, which is at least one selected from the group consisted of Mo, Cu, La, P, Ce and Co, wherein the total specific surface area of the catalyst ranges from 350 to 500 m2/g, and the micropore specific surface area ranges from 200 to 350 m2/g. The catalyst has high total specific surface area, micropore specific surface area and micropore volume. Good catalytic activity can be shown from the results of the reaction of aromatics preparation from methanol using the catalyst provided by the present invention.
    Type: Grant
    Filed: July 11, 2013
    Date of Patent: May 17, 2016
    Assignees: China Petroleum & Chemical Corporation, Shanghai Research Institute of Petrochemical Technology Sinopec
    Inventors: Xiqiang Chen, Zheming Wang, Jingxian Xiao, Feng Xu
  • Publication number: 20160122256
    Abstract: A method for producing an aromatic hydrocarbon with an oxygenate as raw material, includes: i) reacting an oxygenate in at least one aromatization reactor to obtain an aromatization reaction product; ii) separating the aromatization reaction product to obtain a gas phase hydrocarbons flow X and a liquid phase hydrocarbons flow Y; iii) after removing gas and/or a part of the oxygenate from the gas phase hydrocarbons flow X, a hydrocarbons flow X1 containing a non-aromatic hydrocarbon is obtained; or after removing gas and/or a part of the oxygenate from the gas phase hydrocarbons flow X, a reaction is conducted in another aromatization reactor and a separation is conducted to obtain a flow X2 containing a non-aromatic hydrocarbon and a flow X3 containing an aromatic hydrocarbon. The flows are further treated.
    Type: Application
    Filed: October 30, 2014
    Publication date: May 5, 2016
    Applicants: CHINA PETROLEUM & CHEMICAL CORPORATION, SHANGHAI RESEARCH INSTITUTE OF PETROCHEMICAL TECHNOLOGY, SINOPEC
    Inventors: Zheming WANG, Weimin Yang, Xiqiang Chen, Jingxian Xiao, Feng Xu
  • Publication number: 20140018592
    Abstract: The present invention relates to a catalyst for the conversion of methanol to aromatics and the preparation of the same. The catalyst comprising 85 to 99 parts by weight of a ZSM-5 zeolite, 0.1 to 15 parts by weight of element M1, which is at least one selected from the group consisted of Ag, Zn and Ga, and 0 to 5 parts by weight of element M2, which is at least one selected from the group consisted of Mo, Cu, La, P, Ce and Co, wherein the total specific surface area of the catalyst ranges from 350 to 500 m2/g, and the micropore specific surface area ranges from 200 to 350 m2/g. The catalyst has high total specific surface area, micropore specific surface area and micropore volume. Good catalytic activity can be shown from the results of the reaction of aromatics preparation from methanol using the catalyst provided by the present invention.
    Type: Application
    Filed: July 11, 2013
    Publication date: January 16, 2014
    Inventors: Xiqiang CHEN, Zheming Wang, Jinxian Xiao, Feng Xu
  • Publication number: 20130225397
    Abstract: The present invention relate to a binderless molecular sieve catalyst and a process for preparing the same, which are mainly useful for solving the problems of the current catalysts, such as lower activity, less pore volume and worse diffusivity. The present invention relates to a novel binderless molecular sieve catalyst, comprising, based on the weight of the catalyst, 90-100 wt. % of a molecular sieve, 0-10 wt. % of a binder, and 0-10 wt. % of an anti-wear agent, wherein said catalyst has a pore volume of 0.1-0.5 ml/g, an average pore diameter of 50-100 nm, and a porosity of 20-40%; the anti-wear agent is selected from the rod or needle-like inorganic materials having a length/diameter ratio of 2-20. Said catalyst has the advantages of higher activity, greater pore volume, larger average pore diameter and porosity, and better diffusivity, and well solves said problems and can be used for the industrial preparation of binderless molecular sieve catalysts.
    Type: Application
    Filed: August 23, 2011
    Publication date: August 29, 2013
    Applicants: SHANGHAI RESEARCH INSTITUTE OF PETROCHEMICAL TECHNOLOGY, SINOPEC, CHINA PETROLEUM & CHEMICAL CORPORATION
    Inventors: Guangwei Ma, Huiming Zhang, Jingxian Xiao, Liang Chen, Xiqiang Chen