Pipeline gas pressure reduction with refrigeration generation

Details Pipeline gas pressure reduction with refrigeration generation Pipeline gas pressure reduction with refrigeration generation

1984-02-08

1985-06-11

Hart, Charles

Gas separation

Means within gas stream for conducting concentrate to collector

55 32, 55208, 62 87, 62402, B01D 5314

Patent

active

045226369

ABSTRACT:
The high pressure of pipeline gas is reduced to the low pressure of a distribution system with simultaneous generation of refrigeration by passing the gas through two successive centrifugal compressors driven by two turbo-expanders in which the compressed gas is expanded to successively lower pressures. Refrigeration is recovered from the gas as it leaves each turbo-expander. Methanol is injected into the pipeline gas before it is expanded to prevent ice formation. Aqueous methanol condensate separated from the expanded gas is distilled for the recovery and reuse of methanol.

REFERENCES:
patent: 3002362 (1961-10-01), Morrison
patent: 3355903 (1967-12-01), La Fleur
patent: 3360944 (1968-01-01), Knapp et al.
patent: 3735601 (1973-05-01), Stannard
patent: 3886757 (1975-06-01), McClintock et al.
patent: 4312851 (1982-01-01), Isalski et al.
patent: 4420950 (1983-12-01), Bodas et al.

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