Reaction, process, and cost engineering for the flash hydropyrolysis (FHP) of coal
The latest experimental data on the Flash Hydropyrolysis of North Dakota lignite in the 2 lb/hr entrained tubular reactor experimental facility are summarized. The range of conditions investigated covers reactor pressures from 500 psi to 4000 psi, temperatures from 500/sup 0/ to 900/sup 0/C, and coal particle residence times in the reactor from 1 to 10 seconds. The major effects of the process variables on the yields of liquid hydrocarbons consisting mainly of BTX and heavy oils (>= C/sub 9/) and hydrocarbon gases consisting mainly of methane and ethane and small amounts of carbon oxides are summarized. The product yield for maximum carbon conversion to liquid was obtained at 725/sup 0/C and 2000 psi and amounts to 10% BTX, 10% oils, 25% methane, 10% ethane, and 6% CO. A maximum gaseous yield was obtained at 875/sup 0/C and 2500 psi and amounts to 88% methane, 0.5% ethane, 1.3% CO and < 1% BTX. The FHP process has the advantage of allowing effective gas-solid and gas-liquid separation operations for producing hydrocarbon products from the unconverted char, oils, and process gas. The FHP system also has the distinct advantage of versatility and process flexibility for varying the product slate and the production rate of gaseous and liquid hydrocarbon fuel products in the same reactor depending on reactor operating conditions.
- Research Organization:
- Brookhaven National Lab., Upton, NY (USA)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- EY-76-C-02-0016
- OSTI ID:
- 6574855
- Report Number(s):
- BNL-25232; CONF-781110-8
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
010404 -- Coal
Lignite
& Peat-- Gasification
010405 -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
010406* -- Coal & Coal Products-- Pyrolysis & Cracking-- (-1987)
ALKANES
AROMATICS
BENZENE
CARBONACEOUS MATERIALS
CHEMICAL REACTION YIELD
CHEMICAL REACTORS
COAL
COAL GASIFICATION
COAL LIQUEFACTION
CRYOGENIC FLUIDS
DESIGN
ENERGY SOURCES
ENGINEERING
ETHANE
FLASH HYDROPYROLYSIS PROCESS
FLUIDS
FOSSIL FUELS
FUEL OILS
FUELS
GASIFICATION
HYDROCARBONS
LIQUEFACTION
MATHEMATICAL MODELS
METHANE
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PETROLEUM PRODUCTS
THERMOCHEMICAL PROCESSES
TOLUENE
XYLENES
YIELDS