Patents by Inventor Rendian Zhao

Rendian Zhao 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 continuously regenerating catalyst particles
    Patent number: 7045477
    Abstract: A process for continuously regenerating catalyst particles comprising: passing deactivated catalyst particles downwards in sequence through the first coke-burning zone, second coke-burning zone, oxychlorination zone, and calcination zone in the regenerator, wherein the catalyst particles are contacted with the regeneration gas from the second coke-burning zone, the supplemented dry air, and an inert gas in the first coke-burning zone; introducing an oxygen-containing regeneration gas from the second coke-burning zone into the regenerator, wherein said gas is contacted with the catalyst particles from the first coke burning zone; withdrawing the regeneration gas from the regenerator through the first coke-burning zone and, after the recovery system, recycling it to the second coke-burning zone. The regeneration gas may pass the catalyst bed in either a centrifugal or centripetal way.
    Type: Grant
    Filed: April 18, 2001
    Date of Patent: May 16, 2006
    Assignees: China Petrochemical Corporation, Research Institute of Petroleum Processing, Sinopec
    Inventors: Rendian Zhao, Zhihai Zhao, Jin Wang, Lanxin Zhang, Feng Shi, Jinhui Fu
  • Process for continuously regenerating catalyst particles
    Publication number: 20010049328
    Abstract: A process for continuously regenerating catalyst particles comprising: passing deactivated catalyst particles downwards in sequence through the first coke-burning zone, second coke-burning zone, oxychlorination zone, and calcination zone in the regenerator, wherein the catalyst particles are contacted with the regeneration gas from the second coke-burning zone, the supplemented dry air, and an inert gas in the first coke-burning zone; introducing an oxygen-containing regeneration gas from the second coke-burning zone into the regenerator, wherein said gas is contacted with the catalyst particles from the first coke burning zone; withdrawing the regeneration gas from the regenerator through the first coke-burning zone and, after the recovery system, recycling it to the second coke-burning zone. The regeneration gas may pass the catalyst bed in either a centrifugal or centripetal way.
    Type: Application
    Filed: April 18, 2001
    Publication date: December 6, 2001
    Applicant: China Petrochemical Corporation
    Inventors: Rendian Zhao, Zhihai Zhao, Jin Wang, Lanxin Zhang, Feng Shi, Jinhui Fu