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Publication No: US20230391621 [USA] Application No: US20230391621
Title: Cryogenic process for crude helium recovery from natural gas
Publication Date: 07-12-2023 File Date: 05-06-2023
Inventor(s): Kumar, Sunil; Mhetre, Avinash S;; Sharma, Ojasvi; Diveker, Swapnil; Dasgupta, Soumen; Srivastava, Manoj; Ray, Anjan; Arya, Aarti; Ghosh, Prasenjit; Mendhe, Bharat S;; Ramya, Nammi
IPC Classification: C01
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.
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Industrial Applications Chemistry, Chemical Processes Polymers [Chemistry, Chemical Processes]