Process for the separation of landfill gas

Details Process for the separation of landfill gas Process for the separation of landfill gas

1986-01-24

1987-07-21

Capossela, Ronald C.

Refrigeration

Processes

Circulating external gas

55 16, 55 23, 55 57, 55 68, 62 40, F25J 306

Patent

active

046816127

ABSTRACT:
A recycle process for the separation of landfill gas containing a wide variety of impurities into a carbon dioxide product stream and a fuel-grade-pressurized methane product stream, the process providing for the removal of both the impurities and the carbon dioxide in a cryogenic column as a bottom stream, the separation of the methane from the overhead product stream by a membrane process, and, optionally, the removal of impurities from the carbon dioxide bottom stream in a separate purification column, to recover a high-quality, liquid, carbon dioxide stream.

REFERENCES:
patent: 2888807 (1959-06-01), Bocquet
patent: 4000990 (1977-01-01), Bingham
patent: 4130403 (1978-12-01), Cooley et al.
patent: 4152129 (1979-05-01), Trentham et al.
patent: 4157247 (1979-06-01), Collins, III et al.
patent: 4529411 (1985-07-01), Goddin, Jr. et al.

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