Alkylation The normal feedstock to an alkylation
unit is olefinic, which typically comes from a cracking process. Normally,
butene (or sometimes pentene or propene) is coupled with iso-butane in the
presence of a catalyst. Hydrogen Fluoride (HF) or Sulphuric acid
(H2SO4) are examples of the catalysts normally used.
The alkylation process requires a clean, dry feed stream. Therefore, some
pre-conditioning may be required.
Alkylate product is high in octane,
contains no sulphur, is saturated and is Lead-sensitive. Therefore, it is a
highly valuable component for blending into gasoline.