Integration of a dehydrogenation unit and an alkylation unit

A process for dehydrogenation and alkylation, comprising:

• passing a field butane stream comprising isobutane and n-butane directly to a dehydrogenation unit to generate a dehydrogenation unit product stream comprising isobutane, isobutene, n-butane, and n-butenes;
• passing the dehydrogenation unit product 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 portion of the debutanizer overhead stream to an isomerization unit to generate an isomerization unit product stream which is passed to the deisobutanizer;
• passing another portion of the debutanizer overhead stream to the dehydrogenation unit;
• and
• separating a C3 stream comprising predominantly C3 hydrocarbons in a depropanizer which is in communication with the alkylation unit, and recycling the C3 stream to combine with the field butane stream.