Praffins Recovery

Abstract

This is a three stage process: prefractionation, hydrotreating, and separation of n-paraffins. Kerosene in the l60-28S'C boiling range is prefractionated to give a stream in the desired range of carbon numbers. This stream is passed through a hydrotreater to remove sulphur. Separation of n-paraffin is carried out in the vapour phase at l7SoC. At least three adsorbers are used, one adsorbing, one purifying and one desorbing using hexane as a desorbent.