Parallel stream heat exchange for separation of ethane and highe

Details Parallel stream heat exchange for separation of ethane and highe Parallel stream heat exchange for separation of ethane and highe

1984-09-13

1986-06-03

Sever, Frank

Refrigeration

Processes

Circulating external gas

62 25, 62 29, 62 31, 62 34, 62 39, F25J 302

Patent

active

045927669

ABSTRACT:
For the separation of ethane and higher hydrocarbons from a high pressure incoming gas containing hydrocarbons, the raw gas is cooled and expanded in several stages and the condensates that are produced are fed to a rectifying column to provide an overhead gaseous product essentially consisting of methane and a bottoms product consisting essentially of ethane and higher hydrocarbons. To save energy, the raw gas and/or the product streams are heat exchanged in parallel streams under different pressures, the cooled high-pressure gas is work-expanded and the condensates produced by cooling and expansion are fed separately to the rectifying column.

REFERENCES:
patent: 4331461 (1982-05-01), Karbosky et al.

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