skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

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

Abstract

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.

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

Citation Formats

Kastner, James R, Mani, Sudhagar, Hilten, Roger, and Das, Keshav C. Torrefaction reduction of coke formation on catalysts used in esterification and cracking of biofuels from pyrolysed lignocellulosic feedstocks. United States: N. p., 2015. Web.
Kastner, James R, Mani, Sudhagar, Hilten, Roger, & Das, Keshav C. Torrefaction reduction of coke formation on catalysts used in esterification and cracking of biofuels from pyrolysed lignocellulosic feedstocks. United States.
Kastner, James R, Mani, Sudhagar, Hilten, Roger, and Das, Keshav C. Wed . "Torrefaction reduction of coke formation on catalysts used in esterification and cracking of biofuels from pyrolysed lignocellulosic feedstocks". United States. doi:. https://www.osti.gov/servlets/purl/1224889.
@article{osti_1224889,
title = {Torrefaction reduction of coke formation on catalysts used in esterification and cracking of biofuels from pyrolysed lignocellulosic feedstocks},
author = {Kastner, James R and Mani, Sudhagar and Hilten, Roger and Das, Keshav C},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Nov 04 00:00:00 EST 2015},
month = {Wed Nov 04 00:00:00 EST 2015}
}

Patent:

Save / Share: