Patents by Inventor LEMIN CHENG

LEMIN CHENG 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 regenerating SCR denitration catalyst assisted by microwaves and device therefor
    Patent number: 9533259
    Abstract: Disclosed is a method for regenerating a SCR denitration catalyst assisted by microwaves. The method comprises: (1) a poisoned SCR denitration catalyst is immersed in deionized water, and the SCR denitration catalyst is cleaned by a bubbling method; (2) the SCR denitration catalyst is transferred to a container containing a pore-expanding solution for a soaking treatment; (3) the SCR denitration catalyst is transferred to a microwave device and treated for 1-10 minutes; (4) the SCR denitration catalyst is transferred to a container with an activating liquid and impregnated for 1-4 hours; (5) the SCR denitration catalyst is dried with microwaves for 1-20 minutes; and (6) the SCR denitration catalyst is calcined under conditions of 500-600° C. for 4-7 hours. The present invention has readily available raw materials, is simple and energy-saving in device and process, and is suitable for industrial scale regeneration.
    Type: Grant
    Filed: October 9, 2013
    Date of Patent: January 3, 2017
    Assignee: ZHEJIANG UNIVERSITY
    Inventors: Xiang Gao, Zhongyang Luo, Kefa Cen, MingJiang Ni, Hao Song, Weihong Wu, Hongmin Yu, Zhenglun Shi, Jinsong Zhou, Mengxiang Fang, Chunjiang Yu, Shurong Wang, Lemin Cheng, Qinhui Wang
  • METHOD FOR REGENERATING SCR DENITRATION CATALYST ASSISTED BY MICROWAVES AND DEVICE THEREFOR
    Publication number: 20160256824
    Abstract: Disclosed is a method for regenerating a SCR denitration catalyst assisted by microwaves. The method comprises: (1) a poisoned SCR denitration catalyst is immersed in deionized water, and the SCR denitration catalyst is cleaned by a bubbling method; (2) the SCR denitration catalyst is transferred to a container containing a pore-expanding solution for a soaking treatment; (3) the SCR denitration catalyst is transferred to a microwave device and treated for 1-10 minutes; (4) the SCR denitration catalyst is transferred to a container with an activating liquid and impregnated for 1-4 hours; (5) the SCR denitration catalyst is dried with microwaves for 1-20 minutes; and (6) the SCR denitration catalyst is calcined under conditions of 500-600° C. for 4-7 hours. The present invention has readily available raw materials, is simple and energy-saving in device and process, and is suitable for industrial scale regeneration.
    Type: Application
    Filed: October 9, 2013
    Publication date: September 8, 2016
    Inventors: XIANG GAO, ZHONGYANG LUO, KEFA CEN, MINGJIANG NI, HAO SONG, WEIHONG WU, HONGMIN YU, ZHENGLUN SHI, JINSONG ZHOU, MENGXIANG FANG, CHUNJIANG YU, SHURONG WANG, LEMIN CHENG, QINHUI WANG