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Hydropyrolysis of biomass [electronic resource].

Published:
Washington, D.C. : United States. Environmental Protection Agency, 1992.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description:
Pages: (23 pages) : digital, PDF file
Additional Creators:
Brookhaven National Laboratory, United States. Environmental Protection Agency, and United States. Department of Energy. Office of Scientific and Technical Information
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Summary:
The pyrolysis and hydropyrolysis of biomass was investigated. Experimental runs using the biomass (Poplar wood sawdust) were performed using a tubular reactor of dimensions 1 inch inside diameter and 8 feet long heated at a temperature of 800 C and pressures between 450 and 750 psig. At low heat-up rate the reaction precedes in two steps. First pyrolysis takes place at temperatures of 300 to 400 c and subsequent hydropyrolysis takes place at 700 C and above. This is also confirmed by pressurized thermogravimetric analysis (PTGA). Under conditions of rapid heat-up at higher temperatures and higher hydrogen pressure gasification and hydrogasification of biomass is especially effective in producing carbon monoxide and methane. An overall conversion of 88 to 90 wt % of biomass was obtained. This value is in agreement with the previous work of flash pyrolysis and hydropyrolysis of biomass for rapid heat-up and short residence time. Initial rates of biomass conversion indicate that the rate increases significantly with increase in hydrogen pressure. At 800 C and 755 psig the initial rate of biomass conversion to gases is 0.92 1/min.
Report Numbers:
E 1.99:bnl-47158
bnl-47158
Subject(s):
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Note:
Published through SciTech Connect.
01/01/1992.
"bnl-47158"
"DE92010164"
Steinberg, M.; Kobayashi, Atsushi.
Funding Information:
AC02-76CH00016
View MARC record | catkey: 13819468