Fractional distillation pressure control for separation of aroma

Details Fractional distillation pressure control for separation of aroma Fractional distillation pressure control for separation of aroma

1976-06-24

1977-07-26

Levine, Herbert

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

202160, 203 2, 260671P, C07C 356, C07C 1509

Patent

active

040383342

ABSTRACT:
A pressure control system and method for utilization in a process for effecting the alkylation of an aromatic hydrocarbon with a normally gaseous olefinic feed stream. The system is intended to control the pressure within a fractional distillation column which initially recovers the alkylaromatic product from unreacted aromatic hydrocarbons and a minor quantity of normally gaseous paraffinic contaminants contained in the olefinic feed stream. The system is especially advantageous in the boron trifluoride-catalyzed alkylation of benzene with ethylene, the latter containing minor quantities of ethane which must necessarily be vented, or removed from the system.

REFERENCES:
patent: 2995611 (1961-08-01), Linn et al.
patent: 3423291 (1969-01-01), Oglesby
patent: 3427228 (1969-02-01), Constantikes et al.
patent: 3444052 (1969-05-01), Bracken et al.
patent: 3520944 (1970-07-01), Ward

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