Refrigeration – Processes – Circulating external gas
Patent
1986-04-21
1988-05-10
Capossela, Ronald C.
Refrigeration
Processes
Circulating external gas
55 68, 55 76, 62 20, F25J 300
Patent
active
047432829
ABSTRACT:
A gas-liquid extractive stripping process is disclosed which uses at least one preferential physical solvent in at least one solvent loop, each loop passing through at least two unit operations: extractive-stripping and distillation. At least the first extractive-stripping operation may additionally comprise a rectification section on top of the extraction section. Three products are made from streams of thermally cracked gases or refinery gases: a hydrogen-rich gas stream, a methane-rich gas stream, and a C.sub.2 =+ hydrocarbons stream which is the feed stream for the conventional fractionation train of an olefins manufacturing facility. Ethylene can be economically produced from the C.sub.2 =+ hydrocarbons product stream at a recovery of at least 99.5% and a purity of at least 99.9%.
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Advanced Extraction Technologies, Inc.
Capossela Ronald C.
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