Patents by Inventor Yongyan Lu

Yongyan Lu 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).

  • Process for the crystallization separation of P-xylene
    Patent number: 8293963
    Abstract: Provided is a process for crystallization separating p-xylene, comprising: a) feeding a mixed xylenes stream comprising greater than or equal to 60% by weight, of p-xylene, such as 60% to 98% by weight of p-xylene, to a crystallization unit to perform cooling crystallization, to obtain a slurry comprising p-xylene crystals; and b) feeding the slurry to a filtration and purification unit, to obtain a mother liquor, washings, and p-xylene, wherein the filtration and purification unit uses a simulated moving bed or a combination of multiple moving beds.
    Type: Grant
    Filed: November 20, 2009
    Date of Patent: October 23, 2012
    Assignees: China Petroleum & Chemical Corporation, Shanghai Research Institute of Petrochemical Technology Sinopec
    Inventors: Luping Zhong, Jian Xiao, Yongyan Lu, Yanzi Guo, Dejin Kong
  • PROCESS FOR THE CRYSTALLIZATION SEPARATION OF P-XYLENE
    Publication number: 20100137660
    Abstract: Provided is a process for crystallization separating p-xylene, comprising: a) feeding a mixed xylenes stream comprising greater than or equal to 60% by weight, of p-xylene, such as 60% to 98% by weight of p-xylene, to a crystallization unit to perform cooling crystallization, to obtain a slurry comprising p-xylene crystals; and b) feeding the slurry to a filtration and purification unit, to obtain a mother liquor, washings, and p-xylene, wherein the filtration and purification unit uses a simulated moving bed or a combination of multiple moving beds.
    Type: Application
    Filed: November 20, 2009
    Publication date: June 3, 2010
    Inventors: Luping Zhong, Jian Xiao, Yongyan Lu, Yanzi Guo, Dejin Kong