Process for ionic liquid catalyst regeneration

Details Process for ionic liquid catalyst regeneration Process for ionic liquid catalyst regeneration

2007-12-28

2010-06-08

Mayes, Melvin C (Department: 1793)

Catalyst, solid sorbent, or support therefor: product or process

Regenerating or rehabilitating catalyst or sorbent

Gas or vapor treating

C502S029000, C502S032000, C502S155000, C502S167000, C502S150000

Reexamination Certificate

active

07732364

ABSTRACT:
A regeneration process for re-activating an ionic liquid catalyst, which is useful in a variety of reactions, especially alkylation reactions, and which has been deactivated by conjunct polymers. The process includes a reaction step and a solvent extraction step. The process comprises (a) providing the ionic liquid catalyst, wherein at least a portion of the ionic liquid catalyst is bound to conjunct polymers; and (b) reacting the ionic liquid catalyst with aluminum metal to free the conjunct polymers from the ionic liquid catalyst in a stirred reactor or a fixed reactor. The conjunct polymer is then separated from the catalyst phase by solvent extraction in a stirred extraction or packed column.

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