The Selectopol™ process is a variant of the Polynaphtha™ process using the same catalyst but at lower severity:
- To convert selectively the isobutene portion of an olefinic C4 fraction to high octane, low RVP gasoline blending stock,
- or to enrich Trimethyl Pentene stream for petrochemical applications.
Selectopol™ technology is an alternative scheme to avoid or reduce MTBE production in C4 complex.
Enriched n-butenes raffinate of Selectopol™ is ideally sent to Alkylation, Methyl Ethyl Ketone (MEK), Metathesis or Dimersol-X™ process unit, without any pretreatment.
Low cost means of retrofitting existing MTBE units
or debottlenecking existing alkylation units
Almost complete isobutene conversion
while preserving N-butenes
20 Selectopol™ and Polynaphtha™ units
have been licensed by Axens