Patents by Inventor Chunjiang CUI

Chunjiang CUI 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).

  • System for purifying helium gas, method, and application
    Patent number: 12693071
    Abstract: A system for purifying helium gas, a method, and an application. The system includes a first gas-liquid separation device, a primary helium extraction tower, a second gas-liquid separation device, a secondary helium extraction tower, and a nitrogen removal tower, which are in sequential communication. The first gas-liquid separation device performs first treatment to convert helium-containing natural gas into a first gas and first liquid phases; the primary helium extraction tower performs first distillation on the first gas and first liquid phases to obtain a second gas and second liquid phases; the second gas-liquid separation device performs second treatment to convert the second gas phase to a third gas and third liquid phase; the secondary helium extraction tower performs second distillation on the third gas and third liquid phases to obtain crude helium and a fourth liquid phase form which nitrogen is removed by the nitrogen removal tower.
    Type: Grant
    Filed: December 9, 2022
    Date of Patent: July 28, 2026
    Assignees: Changqing Engineering Design Co., Ltd., China National Petroleum Corporation
    Inventors: Zibing Liu, Peng Qiu, Zhibo Chang, Zheng Xia, Haojie Yu, Yinchun Liu, Xuanji Liang, Denghai Wang, Feng Liu, Liang Lin, Wei Wei, Junlai Fan, Yong Ma, Weiping Jiang, Jie Liu, Yongqiang Guo, Chunjiang Cui, Fuyang Wu, Zongwei Zhang, Jie Huang
  • SYSTEM FOR PURIFYING HELIUM GAS, METHOD, AND APPLICATION
    Publication number: 20250060157
    Abstract: A system for purifying helium gas, a method, and an application. The system includes a first gas-liquid separation device, a primary helium extraction tower, a second gas-liquid separation device, a secondary helium extraction tower, and a nitrogen removal tower, which are in sequential communication. The first gas-liquid separation device performs first treatment to convert helium-containing natural gas into a first gas and first liquid phases; the primary helium extraction tower performs first distillation on the first gas and first liquid phases to obtain a second gas and second liquid phases; the second gas-liquid separation device performs second treatment to convert the second gas phase to a third gas and third liquid phase; the secondary helium extraction tower performs second distillation on the third gas and third liquid phases to obtain crude helium and a fourth liquid phase form which nitrogen is removed by the nitrogen removal tower.
    Type: Application
    Filed: December 9, 2022
    Publication date: February 20, 2025
    Applicants: Changqing Engineering Design Co., Ltd., China National Petroleum Corporation
    Inventors: Zibing LIU, Peng QIU, Zhibo CHANG, Zheng XIA, Haojie YU, Yinchun LIU, Xuanji LIANG, Denghai WANG, Feng LIU, Liang LIN, Wei WEI, Junlai FAN, Yong MA, Weiping JIANG, Jie LIU, Yongqiang GUO, Chunjiang CUI, Fuyang WU, Zongwei ZHANG, Jie HUANG