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U.S. Department of Energy
Office of Scientific and Technical Information

Coal liquefaction short residence time process research. Second quarterly report, January 1-March 31, 1979

Technical Report ·
OSTI ID:5934640
Process research on short residence time studies includes kinetic studies on a bench scale reactor, residence time studies in the three phase liquefaction systems, and characterization of the initial chemical processes. Failures of electrical heaters and a new compressor prevented operation of the reactor in the last quarter. A detector system for measuring the residence time of solids has been built. Chemical studies show the solvent and coal react to form a preasphaltene adduct resulting in a solvent imbalance. The reaction occurs in the 200 to 300/sup 0/C range where neither the coal nor the solvent by themselves undergo reaction. The extent of adduction depends on the nature of the coal and of the solvent.
Research Organization:
Sandia Labs., Albuquerque, NM (USA)
DOE Contract Number:
EY-76-C-04-0789
OSTI ID:
5934640
Report Number(s):
SAND-79-1834
Country of Publication:
United States
Language:
English