Effects on liquefaction of recycling light SRC. SRC-I quarterly technical report. Supplement, April-June 1980
The rationale for recycling SRC in the SRC-I Demonstration Plant focuses on the need for maintaining process solvent yield and quality. As noted in previous reports, the flow through the scaled-up reactor of the Demonstration Plant will be approximately 10 times faster than that in the Wilsonville Pilot Plant reactor - and a computer study (a sequential kinetic model devised by Air Products) has indicated that the faster rate, in reducing the severity of the reaction, will thereby reduce solvent yield and quality. But the same computer study has also predicted that recycling SRC will generate additional solvent of adequate quality. SRC comes in several different compositions. Typically, in the Phase 0 filtration case, SRC is a mixture of approximately 5% oils, 55% asphaltenes, and 40% preasphaltenes. In the Kerr-McGee case for the Demonstration Plant, a light SRC (LSRC) is generated from the Third Stage Settler and a heavy SRC (HSRC) from the Second Stage Settler. The effects of recycling these fractions, mixtures of LSRC, coal and solvent were run through the Air Products Coal Process Development Unit (CPDU) under conditions simulating those of the Demonstration Plant. The results were: Oil formation increased; the hydrogen content of the oil and other condensed products decreased; the asphaltene yield in the SRC product decreased; light hydrocarbon gas formation (C/sub 1/-C/sub 4/) increased; the distillation characteristics of the oil changed; and hydroxyl groups in the oil increased. In addition to evaluating the recycling of LSRC and HSRC in regard to SRC conversion and solvent yield, the investigation will study its impact on hydrogen consumption and solvent quality. 11 figures, 17 tables.
- Research Organization:
- International Coal Refining Co., Allentown, PA (USA)
- DOE Contract Number:
- AC05-78OR03054
- OSTI ID:
- 6754439
- Report Number(s):
- DOE/OR/03054-T2-Suppl.; ON: DE84015109
- Resource Relation:
- Other Information: Portions are illegible in microfiche products. Original copy available until stock is exhausted
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
SOLVENT-REFINED COAL
RECYCLING
SRC PROCESS
COAL LIQUEFACTION
COAL LIQUIDS
DEMONSTRATION PLANTS
EXPERIMENTAL DATA
ORGANIC SOLVENTS
PROCESS DEVELOPMENT UNITS
DATA
FLUIDS
FUELS
FUNCTIONAL MODELS
INFORMATION
LIQUEFACTION
LIQUIDS
NUMERICAL DATA
SOLVENTS
THERMOCHEMICAL PROCESSES
010405* - Coal
Lignite
& Peat- Hydrogenation & Liquefaction