A process is described for the production of hydrocarbons with a high octane
number
starting from mixtures essentially consisting of n-butane and isobutane (such as
for example field butanes) comprising a skeleton isomerization section, a dehydrogenation
section of paraffins, a selective hydrogenation section of butadiene, two conversion
sections of olefins, in which the isobutene is firstly selectively transformed
by means of dimerization and/or etherification, followed by the linear butenes
by means of alkylation, in order to obtain, by joining the products of the two
conversion sections, a product having excellent motoristic properties (octane number,
volatility and distillation curve).
