Title:
SYSTEM FOR EXTRACTING HELIUM FROM HELIUM-POOR NATURAL GAS AND CO-PRODUCING MULTIPLE PRODUCTS, AND METHOD
Document Type and Number:
WIPO Patent Application WO/2024/036837
Kind Code:
A1
Abstract:
A system for extracting helium from helium-poor natural gas and co-producing multiple products, and a method. The system comprises: a primary refrigeration device (11), a primary cryogenic separator (9), a pre-denitrogenation column (26), a demethanizer (51), a secondary refrigeration device (72), a helium extraction column (75), a denitrogenation column (98), etc. Rectification and separation of nitrogen, methane, ethane and propane are carried out in ascending order of the boiling points of components, nitrogen and methane are separated by using the pre-denitrogenation column (26), and nitrogen and helium are separated by means of low-temperature rectification.
Inventors:
LIU ZIBING (CN)
SHI DAOHAN (CN)
YU HAOJIE (CN)
BAN XINGAN (CN)
WANG DENGHAI (CN)
WANG NIANRONG (CN)
LIU FENG (CN)
CHANG ZHIBO (CN)
ZHU GUOCHENG (CN)
LIANG XUANJI (CN)
LIU YINCHUN (CN)
QIU PENG (CN)
SU HAIPING (CN)
WANG CHUNYAN (CN)
LI SHUHUA (CN)
LIU JIE (CN)
FAN JUNLAI (CN)
HAN WANLONG (CN)
LI JINGZI (CN)
LIN LIANG (CN)
HUANG JIE (CN)
ZHANG WENCHAO (CN)
ZHAO YUJUN (CN)
GUO YONGQIANG (CN)
SHI DAOHAN (CN)
YU HAOJIE (CN)
BAN XINGAN (CN)
WANG DENGHAI (CN)
WANG NIANRONG (CN)
LIU FENG (CN)
CHANG ZHIBO (CN)
ZHU GUOCHENG (CN)
LIANG XUANJI (CN)
LIU YINCHUN (CN)
QIU PENG (CN)
SU HAIPING (CN)
WANG CHUNYAN (CN)
LI SHUHUA (CN)
LIU JIE (CN)
FAN JUNLAI (CN)
HAN WANLONG (CN)
LI JINGZI (CN)
LIN LIANG (CN)
HUANG JIE (CN)
ZHANG WENCHAO (CN)
ZHAO YUJUN (CN)
GUO YONGQIANG (CN)
Application Number:
PCT/CN2022/138095
Publication Date:
February 22, 2024
Filing Date:
December 09, 2022
Export Citation:
Assignee:
CHANGQING ENG DESIGN CO LTD (CN)
CHINA NAT PETROLEUM CORP (CN)
CHINA NAT PETROLEUM CORP (CN)
International Classes:
F25J3/02
Foreign References:
| CN106866339A | 2017-06-20 | |||
| CN112179048A | 2021-01-05 | |||
| CN107228526A | 2017-10-03 | |||
| CN208042611U | 2018-11-02 | |||
| CN113865263A | 2021-12-31 | |||
| CN212747065U | 2021-03-19 |
Attorney, Agent or Firm:
RUNPING & PARTNERS (CN)
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