Upgrading of coal liquids for use as power generation fuels. Annual report, February 1977--January 1978
Residual coal liquids were hydroprocessed in a fixed bed hydroprocessing unit to upgrade them to high quality power generation fuels. Greater than 95, 90, and 80 percent of the sulfur, oxygen, and nitrogen, respectively, were removed at hydrogen consumptions as high as 4300 scf/B. The conversion of the resins and asphaltenes to saturates, oils, and light liquids appears to be strongly dependent upon the oxygen removal. SRC products produced at short contact times were upgraded to the same extent as regular SRC when processed at similar conditions. Trace metal contaminants in the SRC products deposit on the hydroprocessing catalysts and contribute to catalyst deactivation. A kinetic model linking the rates of conversion and heteroatom removal to the operating conditions was developed. A 30-day aging study was conducted on an H-Coal distillate product. A relatively low aging rate of 5 to 10% F/month indicates that acceptable cycles can be obtained wth this feed. Tests in a small scale turbine combustor at Westinghouse Research indicate that H-Coal and SRC distillate liquids would be unacceptable in today's gas turbines. However, when hydroprocessed, these liquids gave results comparable to a No. 2 petroleum fuel oil.
- Research Organization:
- Mobil Research and Development Corp., Paulsboro, NJ (USA). Process Research and Technical Service Div.
- OSTI ID:
- 6410672
- Report Number(s):
- EPRI-AF-873
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
010405* -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
CHALCOGENIDES
CHEMICAL REACTIONS
COAL LIQUEFACTION
COAL LIQUIDS
CORROSION
CRYOGENIC FLUIDS
DEPOSITS
ELEMENTS
EROSION
FLUIDS
FUELS
GAS TURBINES
H-COAL PROCESS
HYDROGENATION
LIQUEFACTION
NITROGEN
NITROGEN COMPOUNDS
NITROGEN OXIDES
NONMETALS
OXIDES
OXYGEN
OXYGEN COMPOUNDS
PERFORMANCE TESTING
PROCESSING
REFINING
REMOVAL
SRC PROCESS
SULFUR
SYNTHETIC FUELS
TESTING
THERMOCHEMICAL PROCESSES
TURBINES
TURBOMACHINERY