Title:
RECOVERY OF PROPYLENE AND ETHYLENE FROM OFFGASES
Document Type and Number:
WIPO Patent Application WO2000031214
Kind Code:
A3
Abstract:
A system and process for the recovery of ethylene and propylene from a gas stream, such as a refinery offgas stream. The process comprises withdrawing, cooling, and recovering an overhead vapor stream from a single distillation column (20). The process includes withdrawing a liquid C3+, C4+, C5+ or C6+ bottoms product stream (4) and recycling (5) a portion of the bottoms stream (4) to maintain an overhead column condenser (28) at temperature refrigeration levels of above -140 DEG F and withdrawing a vapor side stream rich in propylene or ethylene-propylene.
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Inventors:
HOPEWELL RICHARD B (US)
Application Number:
PCT/US1999/027622
Publication Date:
October 26, 2000
Filing Date:
November 19, 1999
Export Citation:
Assignee:
CHART INC (US)
HOPEWELL RICHARD B (US)
HOPEWELL RICHARD B (US)
International Classes:
C07C7/04; C07C7/20; C10G70/04; C10G70/06; F25J3/02; (IPC1-7): F25J1/00
Foreign References:
| US4430102A | 1984-02-07 | |||
| US4753667A | 1988-06-28 | |||
| US5680775A | 1997-10-28 |
Other References:
See also references of EP 1157249A4
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