Patent ID: 8053620
Filing Date: 2011-11-08
Classification: C10G

Abstract:
1. A process for removing sulfur and nitrogen containing contaminants from a paraffin containing feedstock, the process comprising: providing a kerosene boiling range petroleum fraction; fractionating the kerosene boiling range petroleum fraction with a high bromine index to produce a liquid fractionated stream; hydrotreating the fractionated stream to produce the paraffin containing feedstock with a lower bromine index compared to the bromine index of the fractionated stream; providing the liquid paraffin containing feedstock, wherein the feedstock comprises C passing the paraffin containing feedstock to an inlet of a guard bed, wherein the guard bed includes an adsorbent material consisting of a molecular sieve and a binder; contacting the paraffin containing feedstock with the adsorbent material in the guard bed to produce a treated paraffin containing feedstock having a reduced thiophenic content relative to the paraffin containing feedstock entering the guard bed; removing the treated paraffin containing feedstock from an outlet of the guard bed; and passing the treated paraffin containing feedstock to a liquid phase paraffin separation zone that separates normal paraffins from the treated paraffin containing feedstock.