Project lignite. Quarterly technical progress report No. 13, April, May and June 1977

Technical Report · Mon Apr 10 04:00:00 EST 1978

DOI:https://doi.org/10.2172/6648829· OSTI ID:6648829

Severson, D. E.

Four runs were completed, M-29 through M-32, in liquefaction tests with 266 hours of operation logged with lignite charging and continued good material balance closures. Run M-29, of seven days duration, was the longest extended operation completed to date, with 149.9 hours on stream completed charging lignite. Extended operation with recycle of lignite-derived solvent indicated some continued improvement in conversion with cumulative time of operation. Sufficient possible recycle solvent was generated for continuous operation. Lignite from the Larson mine gave lower total conversions and decreased yields of light oil and gases under similar process conditions as compared with lignite from the Zap mine. Increased reactor temperature resulted in slightly lower conversions during M-30; previous correlations had indicated increased conversion with increased reaction temperature. Slightly higher conversions were obtained during operation with reactor R-1B than with reactor R-1A under apparently the same process conditions. Integrated operation of the deashing section with liquefaction operations was plagued with mechanical problems. Limited operation indicated separation was achieved, although ash content of the SRL was higher than desired. Maintenance was concentrated on maintaining operability of the PDU. Mechanical troubles with pumps, valves and seals continued to be a problem affecting operation.

• Research Organization: North Dakota Univ., Grand Forks (USA)
• OSTI ID: 6648829
• Report Number(s): FE-1224-78
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010405* -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
BROWN COAL
CARBONACEOUS MATERIALS
CARBONIZATION
CHEMICAL REACTIONS
COAL
COAL LIQUEFACTION
COAL LIQUIDS
COKING
CONTROL EQUIPMENT
DATA
DEASHING
DECOMPOSITION
ENERGY SOURCES
EQUIPMENT
FLOW REGULATORS
FOSSIL FUELS
FUELS
FUNCTIONAL MODELS
INFORMATION
LIGNITE
LIQUEFACTION
MAINTENANCE
MATERIAL BALANCE
PLUGGING
PROCESS DEVELOPMENT UNITS
PUMPS
SEALS
THERMOCHEMICAL PROCESSES
VALVES