Process and apparatus for the recovery of the heaviest hydrocarb

Details Process and apparatus for the recovery of the heaviest hydrocarb Process and apparatus for the recovery of the heaviest hydrocarb

1990-03-09

1991-10-01

Capossela, Ronald C.

Refrigeration

Processes

Circulating external gas

55 16, 55158, 62 40, F25J 302

Patent

active

050530674

ABSTRACT:
Part of the hydrogen from the gas treated, which is for example a residual gas from petroleum refinery, is first removed. The remaining mixture is introduced at an intermediate level of a distillation column which includes a head condenser operating at a temperature TF of the order of -40.degree. C. or more. The hydrogen content of said remaining mixture is selected so that the dew point of the residual gas which is removed at the top of the column is slightly higher than the temperature TF. The heavy hydrocarbons are collected at the base of the column.

REFERENCES:
patent: 3250080 (1966-05-01), Garwin
patent: 4284423 (1981-08-01), Eakman et al.
patent: 4374657 (1983-02-01), Schendel et al.
patent: 4411677 (1983-10-01), Pervier et al.
patent: 4595404 (1986-06-01), Ozero et al.
patent: 4602477 (1986-07-01), Lucadamo
patent: 4681612 (1987-07-01), O'Brien et al.
patent: 4732583 (1988-03-01), DeLong et al.

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