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Title: Torrefaction reduction of coke formation on catalysts used in esterification and cracking of biofuels from pyrolysed lignocellulosic feedstocks

Patent ·
OSTI ID:1224889
; ; ;

A bio-oil production process involving torrefaction pretreatment, catalytic esterification, pyrolysis, and secondary catalytic processing significantly reduces yields of reactor char, catalyst coke, and catalyst tar relative to the best-case conditions using non-torrefied feedstock. The reduction in coke as a result of torrefaction was 28.5% relative to the respective control for slow pyrolysis bio-oil upgrading. In fast pyrolysis bio-oil processing, the greatest reduction in coke was 34.9%. Torrefaction at 275.degree. C. reduced levels of acid products including acetic acid and formic acid in the bio-oil, which reduced catalyst coking and increased catalyst effectiveness and aromatic hydrocarbon yields in the upgraded oils. The process of bio-oil generation further comprises a catalytic esterification of acids and aldehydes to generate such as ethyl levulinate from lignified biomass feedstock.

Research Organization:
UNIVERSITY OF GEORGIA RESEARCH FOUNDATION, INC., Athens, GA, (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
FG36-08GO88144
Assignee:
UNIVERSITY OF GEORGIA RESEARCH FOUNDATION, INC.
Patent Number(s):
9,175,235
Application Number:
14/080,153
OSTI ID:
1224889
Resource Relation:
Patent File Date: 2013 Nov 14
Country of Publication:
United States
Language:
English

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