Process for prevention of water build-up in cryogenic distillati

Details Process for prevention of water build-up in cryogenic distillati Process for prevention of water build-up in cryogenic distillati

1986-08-01

1988-01-05

Warner, Steven E.

Refrigeration

Processes

Circulating external gas

62 18, F25J 308

Patent

active

047174080

ABSTRACT:
A process by which a vapor side product stream is taken from the bottom section of a cryogenic distillation column, such as a propane or ethane recovery column, which process optionally employs a nonpolar liquid additive for use in the separation of acid gases from a hydrocarbon feed stream. The withdrawal of the vapor side stream prevents the build-up of water in the column which would ordinarily lead to free-water formation or the formation of solid hydrates in the cryogenic distillation column.

REFERENCES:
patent: 2672034 (1954-03-01), Morrow
patent: 3038315 (1962-06-01), Colton
patent: 3163511 (1964-12-01), Linde et al.
patent: 3633371 (1972-01-01), Davison
patent: 4428759 (1984-01-01), Ryan et al.
patent: 4444576 (1984-04-01), Ryan et al.
patent: 4462814 (1984-07-01), Holmes et al.
patent: 4595404 (1986-06-01), Ozero et al.

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