Research and development of rapid hydrogenation for coal conversion to synthetic motor fuels (riser cracking of coal). Second quarter report, July 1--September 30, 1978

Technical Report · Fri Dec 01 04:00:00 EST 1978

DOI:https://doi.org/10.2172/6074239· OSTI ID:6074239

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

Over the reporting period, work in the bench-scale unit has been directed at exploring methods for handling caking coals. Throughout this work, a sample of Illinois No. 6 coal having an FSI of 4-1/2 has been used, and the methods explored included the use of dry diluents, extractive solvents, and additives. Both silica sand and devolatilized char have been successfully used as dry diluents, but large amounts are required, tending to make processing inefficient. Slurrying with a solvent carrier comprised of 20% weight naphthalene, 40% by weight toluene, and 40% by weight phenol is in the evaluation stage, as is the use of additives which are used at the level of 10% by weight additive with 90% by weight coal. One of the most promising systems is coal treated in water with calcium hydroxide with subsequent evaporation of the water to obtain dry solids for feeding. The bench-scale unit was modified to permit liquids and slurries to be pumped from atmospheric pressure to reactor pressure in a single step. In the experimental work, it has been found that the mixture of naphthalene, toluene, and phenol can be fed to the reactor at temperature and pressure without plugging the reactor. Site preparation for the PDU is approximately half finished, and a contract for fabrication of the major vessels is being let. The Incoloy 800 tubing for the preheater and riser reactor has been received, and the pressure shell for the riser should be delivered in December. A low pressure simulator of a PD combustor section has been built and operated; there does not appear to be any critical relationship between the mainstream velocity and the entering oxygen velocity, allowing considerable latitude in sizing the air/oxygen injection needle. For temperature changes of 300/sup 0/F, the use of ceramic shields does not appear to be necessary.

• Research Organization: Institute of Gas Technology, Chicago, IL (USA)
• OSTI ID: 6074239
• Report Number(s): FE-2307-42
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010405* -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
BENCH-SCALE EXPERIMENTS
BITUMINOUS COAL
BLACK COAL
CAKING POWER
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
COAL
COAL LIQUEFACTION
DECOMPOSITION
ENERGY SOURCES
FOSSIL FUELS
FUELS
GASOLINE
HYDROGENATION
LIQUEFACTION
MATERIALS HANDLING
PETROLEUM PRODUCTS
PRODUCTION
PYROLYSIS
THERMOCHEMICAL PROCESSES