HF Alkylation process utilizing compressed isoparaffin vapor in

Details HF Alkylation process utilizing compressed isoparaffin vapor in HF Alkylation process utilizing compressed isoparaffin vapor in

1978-04-27

1979-03-13

Crasanakis, George

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07C 354

Patent

active

041442814

ABSTRACT:
In an HF alkylation of an isoparaffin, e.g., isobutane, with olefins, the hydrocarbon phase from the HF reactor effluent settler is charged to an HF separation zone. HF-free bottoms from the HF separation zone are charged to an isobutane stripper thereby producing HF-free isobutane vapor as overhead. The heat available in the isobutane vapor overhead is then utilized by compressing the vapor and using it as additional heat exchange fluid prior to being recycled to the HF alkylation. The compressed vapor can, for example, be used to reboil the HF separation zone, e.g., an HF stripper, heat the inner-heater on the isobutane stripper, and heat the depropanizer inner heater.

REFERENCES:
patent: 2431500 (1947-11-01), Penick
patent: 2764623 (1956-09-01), Leonard et al.
patent: 3002818 (1961-10-01), Berger
patent: 3594444 (1971-07-01), Jones
patent: 3857904 (1974-12-01), Chapman
patent: 3957901 (1976-05-01), Chapman

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