Certification Accuired By Ransol Holding For C4 Raffinate II.
which is used to produce M.E.K, Butadiene1.3 and Butene-1. Raffinate-2 can be regarded as stages in the processing of Crude C4s streams. The first stage of the process is to remove, by solvent extraction, the valuable butadiene which may be 40-45% of the stream. What is left is Raffinate-1. It consists of Isobutylene, the two normal isomers, butene-1 and butene-2 and small quantities of butanes and other compounds. Removal of the isobutylene, usually by reaction with Methanol to produce MTBE, leaves Raffinate-2.