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Title: Conversion of wood residues to diesel fuel

Abstract

The basic approach is indirect liquefaction, i.e., thermal gasification followed by catalytic liquefaction. The indirect approach results in separation of the oxygen in the biomass feedstock, i.e., oxygenated compounds do not appear in the liquid hydrocarbon fuel product. The general conversion scheme is shown. The process is capable of accepting a wide variety of feedstocks. Potential products include medium quality gas, normal propanol, paraffinic fuel and/or high octane gasoline. A flow diagram of the continuous laboratory unit is shown. A fluidized bed pyrolysis system is used for gasification. Capacity is about 10 lbs/h of feedstock. The pyrolyzer can be fluidized with recycle pyrolysis gas, steam or recycle liquefaction system off gas or some combination thereof. Tars are removed in a wet scrubber. Unseparated pyrolysis gases are utilized as feed to a modified Fischer-Tropsch reactor. The liquid condensate from the reactor consists of a normal propanol-water phase and a paraffinic hydrocarbon phase. The reactor can be operated to optimize for either product. If a high octane gasoline is desired, the paraffinic fuel is passed through a conventional catalytic reformer. The normal propanol could be used as a fuel extender if blended with the hydrocarbon fuel products. Off gases from the downstreammore » reactors are of high quality due to the accumulation of low molecular weight paraffins.« less

Authors:
Publication Date:
Research Org.:
Arizona State Univ., Tempe (USA). Coll. of Engineering and Applied Sciences
OSTI Identifier:
6826667
Alternate Identifier(s):
OSTI ID: 6826667
Report Number(s):
COO-2982-67; CONF-810237-1
DOE Contract Number:
AS02-76CS40202
Resource Type:
Conference
Resource Relation:
Conference: 4. annual wood energy program and contractor review meeting, Washington, DC, USA, 9 Feb 1981
Country of Publication:
United States
Language:
English
Subject:
09 BIOMASS FUELS; 29 ENERGY PLANNING, POLICY AND ECONOMY; BIOMASS; GASIFICATION; LIQUEFACTION; WOOD WASTES; ALKANES; BOILING POINTS; CALORIFIC VALUE; CATALYTIC REFORMING; CHEMICAL COMPOSITION; CHEMICAL REACTORS; DENSITY; EXPERIMENTAL DATA; FISCHER-TROPSCH SYNTHESIS; FLUIDIZED BED; FUEL OILS; GASOLINE; PHYSICAL PROPERTIES; PROPANOLS; PYROLYSIS; PYROLYTIC GASES; YIELDS; ALCOHOLS; CHEMICAL REACTIONS; COMBUSTION PROPERTIES; DATA; DECOMPOSITION; ENERGY SOURCES; FLUIDS; FUELS; GASES; HYDROCARBONS; HYDROXY COMPOUNDS; INFORMATION; LIQUID FUELS; NUMERICAL DATA; OILS; ORGANIC COMPOUNDS; OTHER ORGANIC COMPOUNDS; PETROLEUM PRODUCTS; PYROLYSIS PRODUCTS; REFORMER PROCESSES; RENEWABLE ENERGY SOURCES; SOLID WASTES; THERMOCHEMICAL PROCESSES; THERMODYNAMIC PROPERTIES; TRANSITION TEMPERATURE; WASTES 140504* -- Solar Energy Conversion-- Biomass Production & Conversion-- (-1989); 090122 -- Hydrocarbon Fuels-- Preparation from Wastes or Biomass-- (1976-1989); 299003 -- Energy Planning & Policy-- Unconventional Sources & Power Generation-- Other-- (-1989); 090222 -- Alcohol Fuels-- Preparation from Wastes or Biomass-- (1976-1989)

Citation Formats

Kuester, J.L. Conversion of wood residues to diesel fuel. United States: N. p., 1981. Web.
Kuester, J.L. Conversion of wood residues to diesel fuel. United States.
Kuester, J.L. Thu . "Conversion of wood residues to diesel fuel". United States. doi:. https://www.osti.gov/servlets/purl/6826667.
@article{osti_6826667,
title = {Conversion of wood residues to diesel fuel},
author = {Kuester, J.L.},
abstractNote = {The basic approach is indirect liquefaction, i.e., thermal gasification followed by catalytic liquefaction. The indirect approach results in separation of the oxygen in the biomass feedstock, i.e., oxygenated compounds do not appear in the liquid hydrocarbon fuel product. The general conversion scheme is shown. The process is capable of accepting a wide variety of feedstocks. Potential products include medium quality gas, normal propanol, paraffinic fuel and/or high octane gasoline. A flow diagram of the continuous laboratory unit is shown. A fluidized bed pyrolysis system is used for gasification. Capacity is about 10 lbs/h of feedstock. The pyrolyzer can be fluidized with recycle pyrolysis gas, steam or recycle liquefaction system off gas or some combination thereof. Tars are removed in a wet scrubber. Unseparated pyrolysis gases are utilized as feed to a modified Fischer-Tropsch reactor. The liquid condensate from the reactor consists of a normal propanol-water phase and a paraffinic hydrocarbon phase. The reactor can be operated to optimize for either product. If a high octane gasoline is desired, the paraffinic fuel is passed through a conventional catalytic reformer. The normal propanol could be used as a fuel extender if blended with the hydrocarbon fuel products. Off gases from the downstream reactors are of high quality due to the accumulation of low molecular weight paraffins.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Jan 01 00:00:00 EST 1981},
month = {Thu Jan 01 00:00:00 EST 1981}
}

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