Abstract: The present invention relates to a cryogenic process to produce crude helium from pretreated natural gas. The pretreated natural gas is processed in two flash stages using the helium free process stream as a stripping agent, and a distillation column with the identified operating conditions and process scheme to ensure 100% helium recovery with reduced capital and operating cost for producing the crude helium. The integration of the cryogenic process with the already known purification system to produce pure helium is demonstrated to ensure high helium recovery in a hybrid process.
Type:
Application
Filed:
June 5, 2023
Publication date:
December 7, 2023
Applicants:
COUNCIL OF SCIENTIFIC & INDUSTRIAL RESEARCH, ONGC Energy Centre Trust (OECT)