Processes for washing a spent ion exchange bed and for treating biomass-derived pyrolysis oil, and apparatuses for treating biomass-derived pyrolysis oil
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.
- Research Organization:
- UOP LLC, Des Plaines, IL (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- EE0002879
- Assignee:
- UOP LLC (Des Plaines, IL)
- Patent Number(s):
- 9,192,931
- Application Number:
- 13/436,648
- OSTI ID:
- 1226831
- Resource Relation:
- Patent File Date: 2012 Mar 30
- Country of Publication:
- United States
- Language:
- English
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