Process for the dehydration of gases

Details Process for the dehydration of gases Process for the dehydration of gases

2011-08-16

2011-08-16

Smith, Duane (Department: 1776)

Gas separation: processes

Liquid contacting

And degasification of a liquid

C095S190000, C095S193000, C095S209000, C095S231000

Reexamination Certificate

active

07998248

ABSTRACT:
Process for the dehydration of gases, comprising: absorbing water vapor by means of a hygroscopic liquid consisting essentially of one or more C2-C8glycols and an additive capable of forming a minimum type azeotrope with water; distilling the glycol/water/additive mixture to obtain a top product consisting mainly of the water/additive azeotropic mixture and a bottom product consisting mainly of glycol and additive (hygroscopic liquid); recycling the regenerated hygroscopic liquid to the absorption stage.

REFERENCES:
patent: 2438368 (1948-03-01), Keeling
patent: 2455803 (1948-12-01), Pierotti
patent: 3321890 (1967-05-01), Barnhart
patent: 3349544 (1967-10-01), Scholten et al.
patent: 3867112 (1975-02-01), Honerkamp et al.
patent: 4005997 (1977-02-01), Fowler et al.
patent: 4524220 (1985-06-01), Law
patent: 4775395 (1988-10-01), Rojey et al.
patent: 1 195 418 (1970-06-01), None
patent: 1195418 (1970-06-01), None
“Hawley's Condensed Chemical Dictionary” 11thEd., p. 327.

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