Refrigeration – Processes – Circulating external gas
Patent
1990-03-12
1992-05-19
Bennet, Henry A.
Refrigeration
Processes
Circulating external gas
62 11, 62 32, 62 44, F25J 302
Patent
active
051144514
ABSTRACT:
A process for the recovery of ethane, ethylene, propane, propylene and heavier hydrocarbons from a liquefied natural gas (LNG) stream is disclosed. At least a portion of the LNG feed stream is directed in heat exchange relation with a compressed recycle portion of the fractionation tower overhead, with the warmed LNG stream thereafter supplied to the fractionation tower at a mid-column feed position. The recycle stream is cooled by the LNG stream sufficiently to substantially condense it, and the substantially condensed recycle stream is then supplied to the column at a top column feed position to serve as reflux for the tower. The pressure of the recycle stream and the quantities and temperatures of the feeds to the column are effective to maintain the column overhead temperature at a temperature whereby the major portion of said desired components is recovered in the bottom liquid product from the column.
REFERENCES:
patent: 2952984 (1960-09-01), Marshall, Jr.
patent: 3837172 (1974-09-01), Markbreiter et al.
patent: 4140504 (1979-02-01), Campbell et al.
patent: 4285708 (1981-08-01), Politte et al.
patent: 4368061 (1983-01-01), Mestrallet et al.
patent: 4687499 (1987-08-01), Aghili
patent: 4714487 (1987-12-01), Rowles
patent: 4752312 (1988-06-01), Prible
patent: 4851020 (1989-07-01), Montgomery, IV
patent: 4854955 (1989-08-01), Campbell et al.
patent: 4889545 (1989-12-01), Campbell et al.
patent: 4966612 (1990-10-01), Bauer
Hudson Hank M.
Rambo C. L.
Wilkinson John D.
Bennet Henry A.
Elcor Corporation
Kilner Christopher B.
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