This section presents conceptual designs and economics for two versions of the zeolite-based process—one employing refinery-grade and
the other using chemical-grade propylene as feedstock. The designs are intended to resemble the processes using conventional fixed-bed
alkylation reactors, as in the technologies of Mobil-Badger, UOP, and Dow-Kellogg. PEP Review 92-3-4, Cumene by a Catalytic Distillation
Process (1994), evaluated the cumene process using a catalytic distillation reactor (licensed by CDTech).