Plural stage distillation with intermediate indirect heat exchan

Details Plural stage distillation with intermediate indirect heat exchan Plural stage distillation with intermediate indirect heat exchan

1975-03-04

1976-05-11

Lutter, Frank W.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

62 28, 62 31, 62 34, C07C 328, C07C 532, C07C 1102

Patent

active

039564150

ABSTRACT:
Substantially pure methane and ethylene are supplied economically from a transportable liquefied methane-ethylene-ethane mixture by a two-stage distillation at superatmospheric pressure wherein the refrigeration for the first stage reflux may be supplied entirely from sensible cold of the compressed mixture and the second stage reflux is obtained by heat exchange with first stage reboil so that the only power requirement is for compressing the mixture. The mixture is conveniently obtained by combining a cracker gas fraction with a natural gas fraction.

REFERENCES:
patent: 1853743 (1932-04-01), Pollitzer
patent: 1870334 (1932-08-01), Lantz
patent: 2035516 (1936-03-01), Wilkinson et al.
patent: 2180435 (1939-11-01), Schlitt
patent: 2711085 (1955-06-01), Anderson
patent: 2817216 (1957-12-01), Etienne
patent: 3073130 (1963-01-01), Becker
patent: 3625017 (1971-12-01), Hoffman
patent: 3663644 (1972-05-01), Harvey
patent: 3675435 (1972-07-01), Jackson et al.

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