Analysis of coal hydrogasification processes. Monthly technical progress report, 1 September--30 September 1977

Technical Report · Sat Oct 01 04:00:00 EDT 1977

DOI:https://doi.org/10.2172/5328359· OSTI ID:5328359

Data from nine recent Cities Service hydrogasification tests using Montana Rosebud subbituminous coal were entered into a computerized data base. This base contained data from earlier Cities Service tests using lignite coal and recent Cities Service tests using the subbituminous coal. Semiempirical correlations for predicting carbon conversion efficiency, carbon selectivity to methane, carbon selectivity to ethane, and carbon selectivity to hydrocarbon gas were fitted to the data. Coal type did not appear to have any significant effect on carbon conversion or carbon selectivity. Carbon selectivity to methane increased with increasing gas temperature and residence time; carbon selectivity to ethane (and higher hydrocarbon gases) decreased with increasing gas temperature and residence time. In addition, a thermal efficiency for the Cities Service reactor was defined in terms of the primary desirable gaseous hydrocarbon products, the coal feed, and the hydrogen consumed. Data from 18 tests conducted at the Brookhaven National Laboratory for the rapid gas-phase hydrogenation of coal were entered into the computerized data base. The results are tabulated and discussed. The design of a commercial-scale hydrogasification reactor is continuing. The unit will have a configuration similar to the Rocketdyne reactor assembly, consisting mainly of a preburner, injector element, and an entrained-flow reaction chamber.

• Research Organization: Bechtel Corp., San Francisco, Calif. (USA)
• OSTI ID: 5328359
• Report Number(s): FE-2565-6
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010404* -- Coal
Lignite
& Peat-- Gasification
ALKANES
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
CHEMICAL REACTORS
COAL
COAL GASIFICATION
COMPARATIVE EVALUATIONS
CORRELATIONS
CRYOGENIC FLUIDS
DESIGN
EFFICIENCY
ENERGY SOURCES
ETHANE
FLUIDS
FOSSIL FUELS
FUELS
GASIFICATION
HYDROCARBONS
HYDROGENATION
LIGNITE
MATHEMATICAL MODELS
METHANE
ORGANIC COMPOUNDS
SUBBITUMINOUS COAL