Recovery of HF and ethyl fluoride from alkylation of isoparaffin

Details Recovery of HF and ethyl fluoride from alkylation of isoparaffin Recovery of HF and ethyl fluoride from alkylation of isoparaffin

1974-12-10

1976-09-07

Crasanakis, G. J.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

26068351, C07C 354

Patent

active

039794750

ABSTRACT:
Lean HF is used to extract ethyl fluoride from depropanizer overhead by steps including contacting liquid propane containing ethyl fluoride with lean HF thus taking ethyl fluoride into the HF phase, contacting vent gas from the depropanizer overhead with lean HF thus taking into the HF ethyl fluoride from the vent gases, and passing thus enriched HF phases to an alkylation reactor thus recovering ethyl fluoride and HF acid for use in the alkylation reaction. There are recovered a propane yield stream substantially free from ethyl fluoride as well as a vent gas also substantially free from ethyl fluoride.

REFERENCES:
patent: 3751517 (1973-08-01), Hutson, Jr. et al.
patent: 3763265 (1973-10-01), Hutson, Jr. et al.
patent: 3767727 (1973-10-01), Chapman
patent: 3864423 (1975-02-01), Chapman
patent: 3911044 (1975-10-01), Carter

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