Process for reducing the benzene content of petrols

Details Process for reducing the benzene content of petrols Process for reducing the benzene content of petrols

1994-12-29

1996-11-26

Pal, Asok

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Plural serial stages of chemical conversion

208139, 585253, 585734, 585747, 585748, 585750, 585751, C10G 4500, C07C 513

Patent

active

055781969

ABSTRACT:
The invention concerns a process for reducing the benzene content of petrol fractions, in which hydrogenation is carried out on a feed with the following composition by weight: 40% to 80% of paraffins, 0.5% to 7% of cyclic hydrocarbons and 6% to 45% of aromatics, and with a maximum distillation temperature of between 70.degree. C. and 90.degree. C., followed by isomerisation of the effluent from the hydrogenation step, mixing said feed and/or said effluent with a C.sub.5 -C.sub.6 cut; said process being characterised in that an isomerisation catalyst is used which contains chlorine and at least one group VIII metal deposited on a support composed of a mixture of specific proportions of eta alumina and gamma alumina.

REFERENCES:
patent: 3025248 (1962-03-01), Oleck et al.
patent: 3173856 (1965-03-01), Burton et al.
patent: 3903192 (1975-09-01), Torck et al.
patent: 5003118 (1991-03-01), Low et al.

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