Between 1996 and 1998, several cumene expansions employing zeolite technology were completed worldwide.
In the United States, 7 cumene plants were retrofitted from SPA to zeolite technology, with 4 using the Mobil-
Badger process and 3 using UOP technology. The CDTech process will be used in a grassroots plant planned
for construction in Taiwan by 2000. EniChem also developed its own zeolite technology, which was employed
to revamp its SPA-based facilities at Porto Torres, Italy.