Hydrogen liquefaction using a dense fluid expander and neon...

Details Hydrogen liquefaction using a dense fluid expander and neon... Hydrogen liquefaction using a dense fluid expander and neon...

F - Mech Eng,Light,Heat,Weapons

25

J

162/110

F25J 1/00 (2006.01) F25J 1/02 (2006.01)

Patent

CA 1298775

ABSTRACT The present invention is a process for the liquefaction of hydrogen which utilizes A dense fluid expander and neon as a precoolant refrigerant. In the process, a two phase mixture containing about 85-90% liquid of greater than 95% para-hydrogen is produced in a dense fluid expander. Most of the refrigeration for liquefaction is supplied by a neon refrigeration system, consisting of a centrifugal compressor, heat exchangers and one or more stages of neon expansion. As an option, further refrigeration may be supplied utilizing liquid nitrogen as another precoolant.

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