The HYDROCARB process: Conversion of carbonaceous materials to clean carbon and gaseous fuel
HYDROCARB is a two-step process for producing a clean carbon black solid fuel and a co-product hydrogen-rich or methane-rich clean fuel gas from such raw carbonaceous materials as coal, wood, and municipal solid waste. The carbonaceous raw material is first hydropyrolyzed in an excess of hydrogen to convert the majority of the carbon in the raw feedstock to a methane-rich process gas containing smaller equilibrium amounts of CO, CO/sub 2/, H/sub 2/O, H/sub 2/S and N/sub 2/. The solid ash and impurities remain behind. After removal of water, the process gas is raised in temperature to thermally decompose the methane to carbon black and hydrogen. The process is completed by recycling the hydrogen-rich gas to the hydropyrolyzer, and the excess gas is withdrawn as a clean medium Btu hydrogen-rich or methane-rich gas after removal of H/sub 2/S. Much of the sulfur can be removed in the hydropyrolyzer by the addition of limestone. The process chemistry applied to a bituminous coal is described. The process can essentially be described as a distillation of carbon from the carbonaceous material with the use of hydrogen to a clean carbon black fuel form. 3 refs., 2 figs., 7 tabs.
- Research Organization:
- Brookhaven National Lab., Upton, NY (USA)
- DOE Contract Number:
- AC02-76CH00016
- OSTI ID:
- 5492143
- Report Number(s):
- BNL-40731; CONF-880215-1; ON: DE88006302
- Resource Relation:
- Conference: Energy from biomass and wastes, New Orleans, LA, USA, 15 Feb 1988; Other Information: Portions of this document are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
09 BIOMASS FUELS
CARBONACEOUS MATERIALS
GASIFICATION
PROCESSING
FUEL GAS
MANUFACTURING
SOLID FUELS
SYNTHETIC FUELS
BIOMASS
CALORIFIC VALUE
CARBON BLACK
COAL
COMBUSTION
COMPARATIVE EVALUATIONS
COST
DECOMPOSITION
EFFICIENCY
HYDROGEN
HYDROGENATION
PYROLYSIS
RECYCLING
SOLID WASTES
WOOD
CARBON
CHEMICAL REACTIONS
COMBUSTION PROPERTIES
ELEMENTS
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUELS
GAS FUELS
GASES
MATERIALS
NONMETALS
OXIDATION
RENEWABLE ENERGY SOURCES
THERMOCHEMICAL PROCESSES
WASTES
090100* - Hydrocarbon Fuels- (-1989)
090110 - Hydrocarbon Fuels- Properties- (1979-1989)
090400 - Solid Waste & Wood Fuels- (-1989)