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1. (WO2018119836) METHOD OF REDUCING ARGON CONTENT IN HYDROGEN

Pub. No.:    WO/2018/119836    International Application No.:    PCT/CN2016/112927
Publication Date: Fri Jul 06 01:59:59 CEST 2018 International Filing Date: Fri Dec 30 00:59:59 CET 2016
IPC: C01B 3/22
C01B 3/32
Applicants: LINDE AG
SU, Kefeng
Inventors: SU, Kefeng
BRANDES, Stefan
JIAO, Xingmin
Title: METHOD OF REDUCING ARGON CONTENT IN HYDROGEN
Abstract:
The present invention provides a method of reducing argon content in hydrogen. In particular, the method of reducing argon content in hydrogen which is obtained through methanol cracker and PSA, wherein an improvement of the method comprises: subjecting a feed stream comprising methanol to a stripper process using a stripper gas comprising nitrogen, a stripper gas comprising hydrogen, or a stripper gas comprising a mixture of hydrogen and nitrogen before the feed stream is introduced into the methanol cracker. In the present invention, the introduction of a stripper for the methanol feed may drastically reduce the argon to low enough levels such that in the downstream PSA unit, H2 can be produced which will meet the very high purity requirements with regard to argon, i. e., in a range of less than 70ppb by volume.