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1. (WO2013148056) PROCESSES FOR WASHING A SPENT ION EXCHANGE BED

Pub. No.:    WO/2013/148056    International Application No.:    PCT/US2013/028531
Publication Date: Fri Oct 04 01:59:59 CEST 2013 International Filing Date: Sat Mar 02 00:59:59 CET 2013
IPC: C10G 25/02
B01J 49/00
C10G 3/00
Applicants: UOP LLC
Inventors: BAIRD, Lance, A.
BRANDVOLD, Timothy, A.
Title: PROCESSES FOR WASHING A SPENT ION EXCHANGE BED
Abstract:
Processes and apparatuses for washing a spent ion exchange bed and for treating biomass-derived pyrolysis oil are provided herein. An exemplary process for washing a spent ion exchange bed employed in purification of biomass-derived pyrolysis oil includes the step of providing a ion-depleted pyrolysis oil stream having an original oxygen content. The ion-depleted pyrolysis oil stream is partially hydrotreated to reduce the oxygen content thereof, thereby producing a partially hydrotreated pyrolysis oil stream having a residual oxygen content that is less than the original oxygen content. At least a portion of the partially hydrotreated pyrolysis oil stream is passed through the spent ion exchange bed. Water is passed through the spent ion exchange bed after passing at least the portion of the partially hydrotreated pyrolysis oil stream therethrough.