Refrigeration – Processes – Circulating external gas
Patent
1979-05-29
1980-11-25
Yudkoff, Norman
Refrigeration
Processes
Circulating external gas
62 24, 62 28, 55 68, F25J 302
Patent
active
042356130
ABSTRACT:
Method for preparing natural gas having a high carbon dioxide, ethane and propane content to meet sales gas specifications, such as BTU requirements. The gas is prepared by cooling, followed by contacting with at least one physical solvent which has a greater affinity for heavier hydrocarbons and carbon dioxide than for methane, ethane, propane and butane. Ethane, propane and butane separated by the initial cooling are selectively recombined with the gas after solvent contact.
REFERENCES:
patent: 3130026 (1964-04-01), Becker
patent: 3595782 (1971-07-01), Bucklin et al.
patent: 3724226 (1973-04-01), Pachaly
patent: 3770622 (1973-11-01), Freireich et al.
patent: 4012212 (1977-03-01), Kniel
Bass Jan W.
Castoe Alonzo R.
Atlantic Richfield Company
Wilson Ronnie D.
Yudkoff Norman
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