Integration of a dehydrogenation unit and an alkylation unit

A process for dehydrogenation and alkylation, comprising:

• passing a field butane stream comprising about 38% isobutane and about 58% n-butane directly to a dehydrogenation unit to generate a process stream comprising isobutane, isobutene, n-butane and n-butenes;
• passing the process stream to a selective hydrogenation unit to generate a selective hydrogenation unit product stream comprising isobutane, isobutene, n-butane and n-butenes;
• passing the selective hydrogenation unit product stream to a dehydrogenation fractionation unit to generate a light stream, a heavies stream, and a dehydrogenation fractionation product stream;
• passing the dehydrogenation fractionation product stream to an alkylation unit to produce an alkylation unit product stream comprising alkylate;
• passing the alkylation unit product stream to a deisobutanizer to generate a deisobutanizer overhead stream and a deisobutanizer bottoms stream;
• passing the deisobutanizer bottoms stream to a debutanizer to generate a debutanizer overhead stream and a debutanizer alkylate products stream;
• passing a deisobutanizer side cut to a first isomerization unit to generate a first isomerization unit product stream with an increase of isobutane which is passed to the deisobutanizer;
• passing a portion of the debutanizer overhead stream to a second isomerization unit to generate a second isomerization unit product stream with an increase of isobutane which is passed to the deisobutanizer;
• and
• passing a portion of the debutanizer overhead stream to the dehydrogenation unit.