Low pressure deethanizer

Details Low pressure deethanizer Low pressure deethanizer

1997-06-12

1998-08-11

Kilner, Christopher

Refrigeration

Cryogenic treatment of gas or gas mixture

Separation of gas mixture

62631, F25J 300

Patent

active

057911614

ABSTRACT:
The present invention is a set of improvements in deethanizing and depropanizing fractionation steps in NGL processing. The several embodiments of the present invention apply component distribution to multiple columns, interreboiling, intercondensing, thermal coupling and "thermo-mechanical" coupling to the commonly practiced deethanizer/depropanizer fractionation sequence of NGL processing. Also included are methods of capacity expansion or efficiency improvement for existing high pressure NGL deethanization operations.

REFERENCES:
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patent: 2277387 (1942-03-01), Carney
patent: 2327643 (1943-08-01), Houghland
patent: 2487147 (1949-11-01), Latchum, Jr.
patent: 2666019 (1954-01-01), Winn et al.
patent: 4251249 (1981-02-01), Gulsby
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patent: 4705549 (1987-11-01), Sapper
patent: 5435436 (1995-07-01), Manley et al.
"Temperature-Heat Diagrams for Complex Columns, 2. Underwood's Method for Side Strippers and Enrichers" (N.A. Carlberg et al, Ind. Eng. Chem. Res., vol. 28, pp. 1379-1386, 1989).

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