Patents by Inventor Pengyan Zhang

Pengyan Zhang 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).

  • Method for removing SOx from gas using polyethylene glycol
    Patent number: 9017454
    Abstract: A method for removing SOx (x=2 and/or 3) from gas using a solution having polyethylene glycol as the main ingredient. First, SOx in the gas is absorbed by the solution of polyethylene glycol. Second, the solution of polyethylene glycol which has absorbed SOx is regenerated by one or more of the heating, vacuum, ultrasonic, microwave or radiation methods, thereby releasing the by-products of sulfur dioxide and sulfur trioxide. The regenerated solution of polyethylene glycol is recycled. When the water content of the regenerated solution of polyethylene glycol is high enough to affect the desulfurization, it needs to be removed. Removal methods include heating and rectification, absorption using a water absorbent, or a combination of these methods. The polyethylene glycol solution is recycled after dehydration.
    Type: Grant
    Filed: February 10, 2010
    Date of Patent: April 28, 2015
    Assignees: Beijing Boyuan-Hengsheng High-Technology Co., Ltd., Yongfeng Boyuan Industry Co. Ltd., Peking University
    Inventors: Xionghui Wei, Fang Han, Jianbin Zhang, Pengyan Zhang, Daolong Gao, Jinfei Wang, Chuan Zou, Chun Hu
  • METHOD FOR REMOVING SOx FROM GAS USING POLYETHYLENE GLYCOL
    Publication number: 20110315014
    Abstract: A method for removing SOx (x=2 and/or 3) from gas using a solution having polyethylene glycol as the main ingredient. First, SOx in the gas is absorbed by the solution of polyethylene glycol. Second, the solution of polyethylene glycol which has absorbed SOx is regenerated by one or more of the heating, vacuum, ultrasonic, microwave or radiation methods, thereby releasing the by-products of sulfur dioxide and sulfur trioxide. The regenerated solution of polyethylene glycol is recycled. When the water content of the regenerated solution of polyethylene glycol is high enough to affect the desulfurization, it needs to be removed. Removal methods include heating and rectification, absorption using a water absorbent, or a combination of these methods. The polyethylene glycol solution is recycled after dehydration.
    Type: Application
    Filed: February 10, 2010
    Publication date: December 29, 2011
    Applicants: BEIJING BOYUAN-HENGSHENG HIGH-TECHNOLOGY CO., LTD., PEKING UNIVERSITY, YONGFENG BOYUAN INDUSTRY CO., LTD.
    Inventors: Xionghui Wei, Fang Han, Jianbin Zhang, Pengyan Zhang, Daolong Gao, Jinfei Wang, Chuan Zou, Chun Hu