Apparatus for the separation of hydrogen sulfide from gas mixtur

Details Apparatus for the separation of hydrogen sulfide from gas mixtur Apparatus for the separation of hydrogen sulfide from gas mixtur

1975-07-28

1978-05-16

Wolk, Morris O.

Chemistry: physical processes

Physical processes

Crystallization

55158, 210 22R, 423220, 423232, B01J 122, C01B 1716, C01B 3120

Patent

active

040896536

ABSTRACT:
Hydrogen sulfide is removed from a mixture of gases including carbon dioxide by passing the mixture over an assembly comprising a pair of immobilized liquid membranes of carbonate/bicarbonate solution separated by a gas permeable barrier of hydrophobic microporous material. Because hydrogen sulfide transport through the membranes is diffusion limited while carbon dioxide transport therethrough is reaction rate limited, the assembly exhibits reduced permeability to carbon dioxide and essentially unchanged high permeability to hydrogen sulfide compared to a single immobilized liquid membrane of thickness equal to total thickness of the membranes in the assembly. Hydrogen sulfide thus passes through the assembly more selectively than carbon dioxide.

REFERENCES:
patent: 2540152 (1951-02-01), Weller
patent: 3367504 (1968-02-01), Westmoreland
patent: 3396510 (1968-08-01), Ward et al.
patent: 3398505 (1968-08-01), Llewellyn
patent: 3455092 (1969-07-01), Llewellyn
patent: 3520803 (1970-07-01), Iaconelli
patent: 3819806 (1974-06-01), Ward et al.
patent: 3830733 (1974-08-01), Pivack et al.
patent: 3911080 (1975-10-01), Mehl et al.
patent: 3926561 (1975-12-01), Luccero
patent: 3926797 (1975-12-01), Gigou

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