Isoparaffin-olefin alkylation utilizing liquefied normal paraffi

Details Isoparaffin-olefin alkylation utilizing liquefied normal paraffi Isoparaffin-olefin alkylation utilizing liquefied normal paraffi

1978-04-24

1979-09-11

Crasanakis, George

Chemistry of hydrocarbon compounds

Saturated compound synthesis

By condensation of a paraffin molecule with an olefin-acting...

585715, 585719, 585723, C07C 354

Patent

active

041675355

ABSTRACT:
Field butanes, otherwise introduced into an isostripping column, also utilized to recover alkylate product from unreacted isobutane, are separately fractionated to provide an isobutane concentrate and a normal butane concentrate. The former is increased in pressure and reacted with the olefinic feed stream in admixture with HF-acid catalyst. The latter is introduced into the reaction zone wherein it is vaporized via indirect contact with the reaction mixture. Vaporous normal butane is introduced into the fractionation facility wherein the exothermic heat of reaction serves to separate the field butane stream. Alkylation reactions can thus be conducted at sub-ambient temperatures which results in an alkylate product of improved quality. This technique also obviates the necessity for a cooling water system, thus eliminating the possibility of HF-acid contamination of water bodies.

REFERENCES:
patent: 2409389 (1946-10-01), Ringham
patent: 2906796 (1959-09-01), Putney
patent: 2949494 (1960-08-01), Putney
patent: 3055958 (1962-09-01), Webb, Jr.
patent: 3080438 (1963-03-01), Sailors
patent: 3105102 (1963-09-01), Webb, Jr.
patent: 3969078 (1976-07-01), Zabransky

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