Configurations and methods of acid gas removal

Details Configurations and methods of acid gas removal Configurations and methods of acid gas removal

2003-12-11

2009-12-29

Smith, Duane (Department: 1797)

Gas separation: processes

Liquid contacting

And degasification of a liquid

C095S164000, C095S169000, C095S175000, C095S235000, C095S236000, C096S234000

Reexamination Certificate

active

07637987

ABSTRACT:
A plant includes a vacuum stripper (118) that receives a lean hydrogen sulfide-containing physical solvent (32) and in which substantially hydrogen sulfide-free stripping gas (51,52) is provided by at least one of a high-pressure flash vessel (110) and a medium pressure flash vessel (112). Contemplated configurations advantageously extend the range of use for physical solvents to treat sour gas comprising carbon dioxide and hydrogen sulfide, and can be used to meet most pipeline specification of 4 ppm hydrogen sulfide.

REFERENCES:
patent: 3301778 (1967-01-01), Cabbage
patent: 3375639 (1968-04-01), Miller et al.
patent: 3435590 (1969-04-01), Smith
patent: 3594985 (1971-07-01), Ameen et al.
patent: 3664091 (1972-05-01), Hegwer
patent: 3841382 (1974-10-01), Gravis et al.
patent: 4080424 (1978-03-01), Miller et al.
patent: 5061465 (1991-10-01), Carter
patent: 7192468 (2007-03-01), Mak et al.
www.environmental-expert.com/STSE—resulteach—prodcut.aspx?cid.

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