Patents by Inventor Linghua Zuo

Linghua Zuo 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 regenerating a deactivated heteropolymolybdophosphoric acid catalyst
    Patent number: 9192930
    Abstract: The present invention provides a process for regenerating a deactivated heteropolymolybdophosphoric acid catalyst, comprising the steps of grinding the deactivated catalyst into particles having a particle size of 40 mesh or less, mixing the particles with a mixture comprising aqua ammonia, an aqueous solution containing ammonium ions and organic auxiliaries, kneading the same in a kneader to obtain a paste, drying the paste, molding the paste into cylindrical particles with a through hole in its longitudinal axis, and heating the paste in atmosphere at 350˜450° C. for 1˜10 hours to produce the generated catalyst.
    Type: Grant
    Filed: September 22, 2011
    Date of Patent: November 24, 2015
    Assignee: SHANGHAI HUAYI ACRYLIC ACID CO. LTD.
    Inventors: Xin Wen, Linghua Zuo, Ge Luo, Xiaoqi Zhao, Yan Zhuang, Xiaodong Chu, Jingming Shao
  • PROCESS FOR REGENERATING A DEACTIVATED HETEROPOLYMOLYBDOPHOSPHORIC ACID CATALYST
    Publication number: 20120135856
    Abstract: The present invention provides a process for regenerating a deactivated heteropolymolybdophosphoric acid catalyst, comprising the steps of grinding the deactivated catalyst into particles having a particle size of 40 mesh or less, mixing the particles with a mixture comprising aqua ammonia, which is an aqueous solution containing ammonium ions and organic auxiliaries, kneading the mixture of particles and aqua ammonia in a kneader to obtain a paste, drying the paste, molding the paste into cylindrical particles with a through hole in its longitudinal axis, and heating the paste in atmosphere at 350˜450° C. for 1˜10 hours to produce the generated catalyst.
    Type: Application
    Filed: September 22, 2011
    Publication date: May 31, 2012
    Applicant: Shanghai HuaYi Acrylic Acid Co. Ltd.
    Inventors: Xin Wen, Linghua Zuo, Ge Luo, Xiaoqi Zhou, Yan Zhuang, Xiaodong Chu, Jingming Shao