Methods for sulfate removal in liquid-phase catalytic hydrothermal gasification of biomass
Abstract
Processing of wet biomass feedstock by liquid-phase catalytic hydrothermal gasification must address catalyst fouling and poisoning. One solution can involve heating the wet biomass with a heating unit to a pre-treatment temperature sufficient for organic constituents in the feedstock to decompose, for precipitates of inorganic wastes to form, for preheating the wet feedstock in preparation for subsequent removal of soluble sulfate contaminants, or combinations thereof. Processing further includes reacting the soluble sulfate contaminants with cations present in the feedstock material to yield a sulfate-containing precipitate and separating the inorganic precipitates and/or the sulfate-containing precipitates out of the wet feedstock. Having removed much of the inorganic wastes and the sulfate contaminants that can cause poisoning and fouling, the wet biomass feedstock can be exposed to the heterogenous catalyst for gasification.
- Inventors:
- Issue Date:
- Research Org.:
- Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1111121
- Patent Number(s):
- 8608981
- Application Number:
- 13/541,003
- Assignee:
- Battelle Memorial Institute (Richland, WA); Genifuel Corporation (Salt Lake City, UT)
- Patent Classifications (CPCs):
-
B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY
B - PERFORMING OPERATIONS B09 - DISPOSAL OF SOLID WASTE B09B - DISPOSAL OF SOLID WASTE
- DOE Contract Number:
- AC05-76RL01830
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 09 BIOMASS FUELS
Citation Formats
Elliott, Douglas C, and Oyler, James. Methods for sulfate removal in liquid-phase catalytic hydrothermal gasification of biomass. United States: N. p., 2013.
Web.
Elliott, Douglas C, & Oyler, James. Methods for sulfate removal in liquid-phase catalytic hydrothermal gasification of biomass. United States.
Elliott, Douglas C, and Oyler, James. Tue .
"Methods for sulfate removal in liquid-phase catalytic hydrothermal gasification of biomass". United States. https://www.osti.gov/servlets/purl/1111121.
@article{osti_1111121,
title = {Methods for sulfate removal in liquid-phase catalytic hydrothermal gasification of biomass},
author = {Elliott, Douglas C and Oyler, James},
abstractNote = {Processing of wet biomass feedstock by liquid-phase catalytic hydrothermal gasification must address catalyst fouling and poisoning. One solution can involve heating the wet biomass with a heating unit to a pre-treatment temperature sufficient for organic constituents in the feedstock to decompose, for precipitates of inorganic wastes to form, for preheating the wet feedstock in preparation for subsequent removal of soluble sulfate contaminants, or combinations thereof. Processing further includes reacting the soluble sulfate contaminants with cations present in the feedstock material to yield a sulfate-containing precipitate and separating the inorganic precipitates and/or the sulfate-containing precipitates out of the wet feedstock. Having removed much of the inorganic wastes and the sulfate contaminants that can cause poisoning and fouling, the wet biomass feedstock can be exposed to the heterogenous catalyst for gasification.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Dec 17 00:00:00 EST 2013},
month = {Tue Dec 17 00:00:00 EST 2013}
}
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