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Title: Catalytic hydrothermal liquefaction for bio-oil production

Abstract

Embodiments of a method for producing bio-oil include hydrothermal liquefaction of a biomass (e.g., a lignocellulosic biomass) feedstock to provide a process stream comprising crude oil and an aqueous fraction. The process stream is catalytically upgraded by contact with a sulfided-ruthenium catalyst, in the absence of added hydrogen, at a temperature and pressure effective to reduce an oxygen content of the crude oil, reduce a nitrogen content of the crude oil, reduce a total acid number of the crude oil, increase a H:C mole ratio of the crude oil, reduce a density of the crude oil, reduce a moisture content of the crude oil, reduce viscosity of the crude oil, or any combination thereof, thereby producing an upgraded oil and an upgraded aqueous fraction, which are subsequently separated. The catalytic upgrading process may be a plug-flow process and/or may be performed at or near liquefaction conditions.

Inventors:
; ; ;
Issue Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1493500
Patent Number(s):
10,167,430
Application Number:
15/195,553
Assignee:
Battelle Memorial Institute (Richland, WA) (United States) PNNL
DOE Contract Number:  
AC0576RL01830
Resource Type:
Patent
Resource Relation:
Patent File Date: 2016 Jun 28
Country of Publication:
United States
Language:
English
Subject:
09 BIOMASS FUELS

Citation Formats

Hart, Todd R., Elliott, Douglas C., Schmidt, Andrew J., and Hallen, Richard T. Catalytic hydrothermal liquefaction for bio-oil production. United States: N. p., 2019. Web.
Hart, Todd R., Elliott, Douglas C., Schmidt, Andrew J., & Hallen, Richard T. Catalytic hydrothermal liquefaction for bio-oil production. United States.
Hart, Todd R., Elliott, Douglas C., Schmidt, Andrew J., and Hallen, Richard T. Tue . "Catalytic hydrothermal liquefaction for bio-oil production". United States. https://www.osti.gov/servlets/purl/1493500.
@article{osti_1493500,
title = {Catalytic hydrothermal liquefaction for bio-oil production},
author = {Hart, Todd R. and Elliott, Douglas C. and Schmidt, Andrew J. and Hallen, Richard T.},
abstractNote = {Embodiments of a method for producing bio-oil include hydrothermal liquefaction of a biomass (e.g., a lignocellulosic biomass) feedstock to provide a process stream comprising crude oil and an aqueous fraction. The process stream is catalytically upgraded by contact with a sulfided-ruthenium catalyst, in the absence of added hydrogen, at a temperature and pressure effective to reduce an oxygen content of the crude oil, reduce a nitrogen content of the crude oil, reduce a total acid number of the crude oil, increase a H:C mole ratio of the crude oil, reduce a density of the crude oil, reduce a moisture content of the crude oil, reduce viscosity of the crude oil, or any combination thereof, thereby producing an upgraded oil and an upgraded aqueous fraction, which are subsequently separated. The catalytic upgrading process may be a plug-flow process and/or may be performed at or near liquefaction conditions.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2019},
month = {1}
}

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Works referenced in this record:

Hydrothermal liquefaction of biomass: Developments from batch to continuous process
journal, February 2015