Refrigeration – Processes – Circulating external gas
Patent
1987-09-18
1988-06-07
Capossela, Ronald C.
Refrigeration
Processes
Circulating external gas
62 36, 62 42, 62 44, F25J 302
Patent
active
047493933
ABSTRACT:
The process of this invention is a hybrid gas separation process which recovers both heavy hydrocarbon and high purity hydrogen products from a gas stream containing a relatively low concentration of hydrogen. The heavy hydrocarbon product may consist of C.sub.2 +, C.sub.3 + and/or C.sub.4 + hydrocarbons. The light hydrocarbons and other light components, such as N.sub.2 and CO, are removed as a light fuel gas stream. After convertional removal of any components which might freeze at low temperatures, the feed gas is combined with recycle gas from the hydrogen purifier and fed to the cryogenic unit.
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W. K. Lam et al., "Recover Valuable Off Gasses by Braun Roe Process", Aiche Nat'l Meeting, Apr. 6-10, 1986.
Hopkins Jeffrey A.
Rowles Howard C.
Air Products and Chemicals Inc.
Capossela Ronald C.
Jones II Willard
Marsh William F.
Simmons James C.
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