Refrigeration – Processes – Circulating external gas
Patent
1987-04-28
1988-01-19
Wayner, William E.
Refrigeration
Processes
Circulating external gas
62 28, 62 31, 62 39, 62 41, F25J 102
Patent
active
047202939
ABSTRACT:
The present invention relates to a process for the recovery of ethylene from a feed gas containing ethane, methane and other light gases, e.g. cracked gas or refinery off-gases, wherein ethylene is condensed in two stages, preferably rectified, and fed to an integrated demethanizer column. Refrigeration for the process is provided by an integrated combination of work expansion of rejected light gases, by vaporization of separated ethane at low partial pressure but high total pressure, and by a mixed refrigerant system. The process results in the separation and purification of ethylene from the feed gas stream while significantly reducing the energy consumption to do so.
REFERENCES:
patent: 3675435 (1972-07-01), Jackson et al.
patent: 4002042 (1977-01-01), Pryor et al.
patent: 4035167 (1977-07-01), Starks
patent: 4072485 (1978-02-01), Becdelievre et al.
patent: 4163652 (1979-08-01), Gazzi et al.
patent: 4218229 (1980-08-01), Schuster
patent: 4270940 (1981-06-01), Rowles et al.
patent: 4272270 (1981-06-01), Higgins
patent: 4285708 (1981-08-01), Politte et al.
patent: 4356014 (1982-10-01), Higgins
patent: 4368061 (1983-01-01), Mestrallet et al.
patent: 4401450 (1983-08-01), Schramm
patent: 4404008 (1983-09-01), Rentler et al.
patent: 4496381 (1985-01-01), Norenburg
patent: 4504296 (1985-03-01), Newton et al.
patent: 4525185 (1985-06-01), Newton
patent: 4545795 (1985-10-01), Liu
patent: 4548629 (1985-10-01), Chiu
R. L. Rowell, "New Low-Investment Process to Recover Liquids from Refinery Fuel Gas", Oil & Gas Journal, May 10, 1982, pp. 127-131.
W. R. Minton, "Recovering Ethylene from Refinery Gas" Oil & Gas Journal, Oct. 22, 1982, pp. 62-63.
W. Huang, "Cut Demethanizer Energy Costs," Hydrocarbon Processing, Oct. 1980, pp. 105-108.
V. Kaiser et al, "Optimize Demethanizer Pressure for Maximum Ethylene Recovery" Hydrocarbon Processing, Jun. 1979, pp. 115-121.
V. Kaiser et al, "Analyze Mixed Refrigerant Cycles" Hydrocarbon Processing, Jul. 1978, pp. 163-167.
Bernhard Dennis P.
Grassi Kimberly S.
Rowles Howard C.
Air Products and Chemicals Inc.
Jones II Willard
Marsh William F.
Simmons James C.
Warner Steven E.
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