Flash pyrolysis of biomass with reactive and non-reactive gases. Summary report, March 1982-March 1983
The process chemistry of the flash pyrolysis of biomass (wood) with the reactive gases, H/sub 2/ and CH/sub 4/ and with the non-reactive gas He is being determined in a 1'' downflow tubular reactor at pressures from 20 to 1000 psi and temperatures from 600 to 1000/sup 0/C. With hydrogen, flash hydropyrolysis leads to high yields of methane and CO which can be used for SNG and methanol production. With methane, flash methanolysis of wood, leads to high yields of ethylene, benzene and CO which can be used for the production of valuable feedstocks and methanol fuel. At reactor conditions of 50 psi and 1000/sup 0/C and approximately 1 sec residence time, the ethylene yield based on wood carbon converted is 22%, benzene 12% and the CO yield is 48%. The yield of ethylene is 2.2 times higher with methane than with helium, thus indicating a free radical rection between CH/sub 4/ and the pyrolyzed wood. A preliminary process analysis indicates an economically competitive process for the production of ethylene, benzene and methanol based on the methanolysis of wood. It is recommended to further develop the data base for the flash pyrolysis of wood and other biomass materials with methane as well as with other reactive gases (e.g. CO and CO/sub 2/) and determine the role of the hemi-cellulose and lignin in the formation of these valuable fuels and feedstocks.
- Research Organization:
- Brookhaven National Lab., Upton, NY (USA)
- DOE Contract Number:
- AC02-76CH00016
- OSTI ID:
- 6459953
- Report Number(s):
- BNL-32746; CONF-830323-2; ON: DE83010852
- Resource Relation:
- Conference: 15. biomass thermochemical conversion contractors' meeting, Atlanta, GA, USA, 16 Mar 1983
- Country of Publication:
- United States
- Language:
- English
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Flash pyrolysis of biomass with reactive and non-reactive gases
The flash pyrolysis and methanolysis of biomass (wood) for production of ethylene, benzene and methanol
Related Subjects
WOOD
FLASH HYDROPYROLYSIS PROCESS
PYROLYSIS
BENZENE
CARBON MONOXIDE
ETHYLENE
HELIUM
HEMICELLULOSE
HYDROGEN
LIGNIN
METHANE
METHANOL
ALCOHOLS
ALKANES
ALKENES
AROMATICS
CARBOHYDRATES
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
CHEMICAL REACTIONS
COAL GASIFICATION
COAL LIQUEFACTION
DECOMPOSITION
ELEMENTS
FLUIDS
GASES
GASIFICATION
HYDROCARBONS
HYDROXY COMPOUNDS
LIQUEFACTION
NONMETALS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
POLYSACCHARIDES
RARE GASES
SACCHARIDES
THERMOCHEMICAL PROCESSES
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