Research and development of rapid hydrogenation for coal conversion to synthetic motor fuels (riser cracking of coal). Annual report, April 1, 1976--March 31, 1977. [15 refs]

Technical Report · Wed Jun 01 04:00:00 EDT 1977

DOI:https://doi.org/10.2172/7297128· OSTI ID:7297128

Duncan, D. A.; Beeson, J. L.; Oberle, R. D.

The objective of the program is to develop a noncatalytic process for the rapid hydrogenation of lignites and coals in a short residence-time entrained-flow reactor at high temperatures and pressures for the production of feedstock for synthetic motor fuels. Operating temperatures in the range of 900/sup 0/ to 1500/sup 0/F and operating pressures up to 2000 psig will be used; solids residence time will be varied from 1 to 10 sec. Both a bench-scale unit (5 to 10 lb/hr) and a process development unit (50 to 100 lb/hr) will be used in this program. The development program is based on a commercial concept in which the use of a short residence-time riser reactor, of the type used in contemporary catalytic cracking, is extended to the conversion of coals and lignites to gaseous and liquid products by reaction with gases such as hydrogen, synthesis gas, or mixtures of carbon monoxide and steam. The gases also carry the feed coal through the riser reactor. A maximized production of high-octane gasoline constituents (C/sub 4/ to 400/sup 0/F boiling range including BTX) is an important aspect of this investigation. Light gases (C/sub 1/ to C/sub 3/) will also be produced and will contain substantial proportions of methane and other light hydrocarbons that could be used either for fuel or for petrochemicals feedstock. Spent char would be used for synthesis gas or hydrogen production for use in the riser reactor. The process is expected to have more favorable economics than other known processes--such as the Bergius or Fischer-Tropsch processes--because of the high space-velocity (volume efficiency) of the reactor and also because less hydrogen would be consumed. The distillate fuel yields are expected to be lower than those of the Bergius process, but gas and gasoline yields are expected to be greater.

• Research Organization: Institute of Gas Technology, Chicago, Ill. (USA)
• OSTI ID: 7297128
• Report Number(s): FE-2307-17
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010403 -- Coal & Coal Products-- Hydrogenation-- (-1987)
010405* -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
AUTOMOTIVE FUELS
BENCH-SCALE EXPERIMENTS
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CARBONACEOUS MATERIALS
CHALCOGENIDES
CHEMICAL REACTIONS
CHEMICAL REACTORS
COAL
COAL LIQUEFACTION
COMPARATIVE EVALUATIONS
CRACKING
CRYOGENIC FLUIDS
DECOMPOSITION
ECONOMICS
EFFICIENCY
ELEMENTS
ENERGY SOURCES
EVALUATION
FLUID FLOW
FLUIDS
FOSSIL FUELS
FUEL FEEDING SYSTEMS
FUEL SYSTEMS
FUELS
FUNCTIONAL MODELS
GAS FLOW
GASES
HYDROGEN
HYDROGENATION
LIGNITE
LIQUEFACTION
NONMETALS
OXIDES
OXYGEN COMPOUNDS
PERFORMANCE TESTING
PROCESS DEVELOPMENT UNITS
PYROLYSIS
RESEARCH PROGRAMS
STEAM
SYNTHESIS GAS
SYNTHETIC FUELS
TESTING