EDS coal liquefaction process development: Phase IIIA. Monthly technical progress report, April 1--April 30, 1977

Technical Report · Fri Jul 01 00:00:00 EDT 1977

DOI:https://doi.org/10.2172/6992970· OSTI ID:6992970

Fant, B. T.

The process variable study with Wyoming subbituminous coal in the 50 lb/dau Recycle Coal Liquefaction Unit (RCLU) was completed. A process variable study was initiated with North Dakota lignite. Operations were initiated with Wyoming subbituminous coal in the one ton-per-day Coal Liquefaction Pilot Plant (CLPP). The characterization of solvent hydrogenation feeds and products has been greatly facilitated by computerization of procedures to tabulate concentrations of compounds according to classes having common reactivity. Product upgrading studies show that heavy coal liquids produced by the EDS process can be hydrofined to improve compatibility with petroleum based fuel oils. Additional hydrofining studies are in progress to determine the minimum upgrading necessary to make EDS heavy coal liquids compatible with petroleum products. Initial evaluation of liquefaction bottoms processing alternatives has begun, following the validation of adjusted hydrogen manufacturing vectors. Initial slurry preheater tests on CLPP indicate that higher film temperatures may be achieved without coking in mixed-phase preheating than with slurry-only preheating. Short-term tests at a film temperature of 900/sup 0/F showed no coking in the mixed-phase preheating mode; whereas, some coke was formed in the slurry-only mode at a film temperture of 875/sup 0/F.

• Research Organization: Exxon Research and Engineering Co., Baytown, Tex. (USA). Baytown Research and Development Div.
• DOE Contract Number: EX-76-C-01-2353
• OSTI ID: 6992970
• Report Number(s): FE-2353-15
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
COAL LIQUIDS
DISTILLATION
REFINING
EXXON LIQUEFACTION PROCESS
PILOT PLANTS
ORGANIC SOLVENTS
HYDROGENATION
RESIDUES
COKING
GASIFICATION
CATALYSTS
COAL LIQUEFACTION
PYROLYSIS
SUBBITUMINOUS COAL
TESTING
CARBONACEOUS MATERIALS
CARBONIZATION
CHEMICAL REACTIONS
COAL
DECOMPOSITION
ENERGY SOURCES
FOSSIL FUELS
FUELS
FUNCTIONAL MODELS
LIQUEFACTION
PROCESSING
SEPARATION PROCESSES
SOLVENTS
010405* - Coal
Lignite
& Peat- Hydrogenation & Liquefaction