Patent ID: 9192931
Filing Date: 2015-11-24
Classification: B01J,C10B,C10G,Y02E,Y02P

Abstract:
1. A process for treating biomass-derived pyrolysis oil comprising a metal ion component and having an original oxygen content, said process comprising the steps of: pyrolyzing a biomass feed in a pyrolysis reactor to form a biomass-derived pyrolysis vapor stream; condensing at least a portion of the biomass-derived pyrolysis vapor stream in a condensing system to form a biomass-derived pyrolysis oil stream; passing the biomass-derived pyrolysis oil stream through an ion exchange bed to form an ion-depleted pyrolysis oil stream; partially hydrotreating the ion-depleted pyrolysis oil stream in a hydrotreating device 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; passing at least a portion of the partially hydrotreated pyrolysis oil stream through the spent ion exchange bed; and passing water through the spent ion exchange bed after passing at least the portion of the partially hydrotreated pyrolysis oil stream therethrough.