Patents by Inventor An Ma

An Ma 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).

  • Publication number: 20250058297
    Abstract: The present invention provides a zirconium-based metal-organic framework material and a preparation method therefor and the use thereof, and an adsorption separation device and method. The zirconium-based metal-organic framework material has a chemical structural formula of [C18H6O16Zr3]n, and comprises zirconium and an organic ligand forming a coordination bond with zirconium, wherein the organic ligand is diphenylethyne-3,3?,5,5?-tetracarboxylic acid. The molecular structure of the zirconium-based metal-organic framework material of the present invention is a three-position network structure having a one-dimensional channel; and in the present invention, the size of the one-dimensional channel is accurately controlled by changing the aspect ratio of the organic ligand, such that the zirconium-based metal-organic framework material efficiently separates a hexane isomer by means of a kinetic effect.
    Type: Application
    Filed: December 2, 2022
    Publication date: February 20, 2025
    Inventors: Qihan GONG, Hao WANG, An MA, Jiayu DING, Shang ZHANG, Liang YU, Guangjuan GUO, Yawen BO, Hongyue YU, Kebin CHI
  • Publication number: 20210189267
    Abstract: Provided is a method and device for viscosity-reducing and upgrading of low-grade heavy oil. The method comprises: (a) performing visbreaking reaction on low-grade heavy oil raw material and controlling the content of toluene insolubles in the produced oil; (b) mixing the produced oil in step (a) with hydrogen in a gas-liquid mixer to obtain a hydrogen-oil mixture in liquid state, or mixing the produced oil in step (a) with hydrogen to obtain hydrogen-oil mixture in gas-liquid state; in the presence of a hydrogenation catalyst, performing hydrogenation reaction on the hydrogen-oil mixture in liquid state or the hydrogen-oil mixture in gas-liquid state in the reactor, and obtaining a viscosity-reduced and upgraded oil after the reaction. It is viscosity-reducing and upgrading method by combining thermal visbreaking and fixed-bed hydrogenation, which can solve the problems of high viscosity, high density and poor stability of low-grade heavy oil products in the prior art.
    Type: Application
    Filed: October 29, 2020
    Publication date: June 24, 2021
    Inventors: QINGFENG TAN, AN MA, CHANGLU HU, LUHAI WANG, TAO CHENG, LITAO WANG, DONGHAO YANG, YINDONG LIU, YAN WANG, SHUANG HAN, XIAO ZHANG, YINGCHUN LIANG, HANG YANG, JUNNAN SONG, HUILING YOU, JINGMAN LU, BOHAN ZHANG, WU SU
  • Patent number: 9422486
    Abstract: The present invention relates to a selective hydrogenation catalyst for an unsaturated compound. The supported catalyst contains at least one Group VIB non-noble metal oxide and at least one Group VIII non-noble metal oxide deposited on a carrier; and the catalyst has an optimized acid distribution on the surface of the catalyst, and more preferably has an optimized Group VIII/VIB metal ratio and a Group VIII non-noble metal density per unit of catalyst surface area. Using the catalyst of the present invention can have the following advantages: the weight increase of light sulphides in an unsaturated compound or a mixture containing unsaturated compounds, the hydrogenation of a polyunsaturated compound, the isomerization of a monounsaturated compound, high operation flexibility and a significant improvement in the effects of a hydrogenation treatment.
    Type: Grant
    Filed: November 8, 2012
    Date of Patent: August 23, 2016
    Assignee: PetroChina Company Limited
    Inventors: Xuejun Zhang, An Ma, Xiaoliang Yuan, Yuandong Hou, Honglei Sun, Pingyi Wu, Yin Zhang, Jiarui Piao
  • Publication number: 20150290626
    Abstract: The present invention relates to a selective hydrogenation catalyst for an unsaturated compound. The supported catalyst contains at least one Group VIB non-noble metal oxide and at least one Group VIII non-noble metal oxide deposited on a carrier; and the catalyst has an optimized acid distribution on the surface of the catalyst, and more preferably has an optimized Group VIII/VIB metal ratio and a Group VIII non-noble metal density per unit of catalyst surface area. Using the catalyst of the present invention can have the following advantages: the weight increase of light sulphides in an unsaturated compound or a mixture containing unsaturated compounds, the hydrogenation of a polyunsaturated compound, the isomerization of a monounsaturated compound, high operation flexibility and a significant improvement in the effects of a hydrogenation treatment.
    Type: Application
    Filed: November 8, 2012
    Publication date: October 15, 2015
    Inventors: Xuejun Zhang, An Ma, Xiaoliang Yuan, Yuandong Hou, Honglei Sun, Pingyi Wu, Yin Zhang, Jiarui Piao
  • Patent number: 7785547
    Abstract: An apparatus and a method that increase the concentration of recycled hydrogen in the hydrogenation unit are disclosed having a hydration separation unit included between the high-pressure separator and hydrocracking reactor. A part of the recycled hydrogen contacts with the water-in-oil microemulsion to form hydrates from which the light hydrocarbon components are removed. The gas flow entering into the hydration separation unit is present in amount of 20%˜100% of the total gas flow coming from the high-pressure separator; the water-in-oil microemulsion, in which the volume ratio of oil and water is 1:1 to 5:1 may increase hydrogen partial pressure in the reactor and thus upgrade the performance of hydrogenation.
    Type: Grant
    Filed: October 23, 2007
    Date of Patent: August 31, 2010
    Assignees: PetroChina Company Limited, China University of Petroleum Beijing
    Inventors: Guangjin Chen, An Ma, Lijun Yan, Xuqiang Guo, Changyu Sun, Xiulin Wang
  • Publication number: 20080112862
    Abstract: An apparatus and a method that increase the concentration of recycled hydrogen in the hydrogenation unit are disclosed having a hydration separation unit included between the high-pressure separator and hydrocracking reactor. A part of the recycled hydrogen contacts with the water-in-oil microemulsion to form hydrates from which the light hydrocarbon components are removed. The gas flow entering into the hydration separation unit is present in amount of 20%˜100% of the total gas flow coming from the high-pressure separator; the water-in-oil microemulsion, in which the volume ratio of oil and water is 1:1 to 5:1 may increase hydrogen partial pressure in the reactor and thus upgrade the performance of hydrogenation.
    Type: Application
    Filed: October 23, 2007
    Publication date: May 15, 2008
    Inventors: Guangjin Chen, An Ma, Lijun Yan, Xuqiang Guo, Changyu Sun, Xiulin Wang
  • Patent number: 7316773
    Abstract: The present invention relates to a catalytic cracking process and a device used in the process in particular, the present invention provides a catalytic cracking process, which comprises which comprises: 1) catalytic cracking a feedstock in the first riser for less than about 1.5 second and sending the resultant stream into the first separating device,; 2) catalytic cracking the recycle oil obtained from the first separating device in the second riser for less than about 1.
    Type: Grant
    Filed: March 15, 2004
    Date of Patent: January 8, 2008
    Assignees: Petrochina Company Limited, University of Petroleum China
    Inventors: Jianfang Zhang, An Ma, Honghong Shan, Chaohe Yang, Genlin Niu, Yongshan Tu, Feng Du, Yudong Sun, Zheng Li, Chunyi Li, Zhongxiang Han
  • Publication number: 20050277801
    Abstract: This application provides processes for recovering hydrogen, ethylene and ethane from dry gas or separating ethylene cracked gas from dry gas of refinery plants, wherein a hydrating separation may be combined with for example a freezing or absorbing separation so as to separate a multiple gas mixture.
    Type: Application
    Filed: December 20, 2004
    Publication date: December 15, 2005
    Inventors: Guangjin Chen, Xuqiang Guo, Guanjing Wu, An Ma, Lijun Yan, Hu Luo, Changyu Sun
  • Publication number: 20040178120
    Abstract: The present invention relates to a catalytic cracking process and a device used in the process in particular, the present invention provides a catalytic cracking process, which comprises which comprises:
    Type: Application
    Filed: March 15, 2004
    Publication date: September 16, 2004
    Inventors: Jianfang Zhang, An Ma, Honghong Shan, Chaohe Yang, Genlin Niu, Yongshan Tu, Feng Du, Yudong Sun, Zheng Li, Chunyi Li, Zhongxiang Han
  • Patent number: 6660157
    Abstract: The invention relates to a new and improved heavy oil hydrocracking process using a multimetallic liquid catalyst in a slurry-bed reactor, particularly an improvement of lightweight treatment of heavy oil in the petroleum processing technology. According to the present invention, a slurry-bed hydrocracking reactor and a highly dispersed multimetallic liquid catalyst are mainly applied during the process. A fixed-bed hydrotreating reactor is also used on line to enhance lightweight oil yield from heavy oil under normal pressure.
    Type: Grant
    Filed: November 2, 2001
    Date of Patent: December 9, 2003
    Assignees: PetroChina Company Limited, University of Petroleum
    Inventors: Guohe Que, Cungui Men, Chunxu Meng, An Ma, Jiashun Zhou, Wenan Deng, Zongxian Wang, Baoquan Mu, Chenguang Liu, Dong Liu, Shichang Liang, Bin Shi
  • Publication number: 20030147791
    Abstract: A multi-stage loop reactor, employed in various gas-liquid or gas-liquid-solid chemical reaction systems, which comprises a reactor body, draft tube(s) inside the reactor body, and a gas distributor at the bottom of draft tube. The draft tube can include one or more sections. The multi-stage loop reactor of the present invention has a higher mass transfer rate because the different phases are well mixed throughout the reactor, and the gas bubbles are distributed evenly everywhere. The reactor of this invention can be extensively applied in various gas-liquid or gas-liquid-solid reaction processes including the oxidization process, hydrogenation process, hydrocracking process, coal liquification process, fermentation process, hydrocarbon processing process, and biological treatment of waste water, etc.
    Type: Application
    Filed: December 18, 2002
    Publication date: August 7, 2003
    Inventors: Fuxin Ding, Naiju Yuan, Zheng Liu, An Ma, Yong Qiao
  • Publication number: 20020125172
    Abstract: The invention relates to a new and improved heavy oil hydrocracking process using a multimetallic liquid catalyst in a slurry-bed reactor, particularly an improvement of lightweight treatment of heavy oil in the petroleum processing technology. According to the present invention, a slurry-bed hydrocracking reactor and a highly dispersed multimetallic liquid catalyst are mainly applied during the process. A fixed-bed hydrotreating reactor is also used on line to enhance lightweight oil yield from heavy oil under normal pressure.
    Type: Application
    Filed: November 2, 2001
    Publication date: September 12, 2002
    Applicant: PetroChina Company Limited/University of Petroleum (East China)
    Inventors: Guohe Que, Cungui Men, Chunxu Meng, An Ma, Jiashun Zhou, Wenan Deng, Zongxian Wang, Baoquan Mu, Chenguang Liu, Dong Liu, Shichang Liang, Bin Shi
  • Publication number: 20020108887
    Abstract: This invention relates to a new two-stage riser catalytic cracking process, particularly to an improvement of the conventional riser reactor and reaction-regeneration system by application of a two-stage riser reactor to fulfill the aims of the concatenation of oil-vapor, catalyst in relays as result in shortening reaction time and increasing average performance of the catalyst.
    Type: Application
    Filed: December 13, 2001
    Publication date: August 15, 2002
    Applicant: PetroChina Company Limited and University of Petroleum (East China)
    Inventors: Jianfang Zhang, Honghong Shang, Chaohe Yang, An Ma, Genlin Niu, Feng Du, Yudong Sun, Zheng Li, Chunyi Li, Zhongxiang Han, Aijun Duan