Integration of advanced preparation with coal liquefaction. Third quarterly technical progress report, April 1-June 30, 1984

Technical Report · Tue Jul 24 00:00:00 EDT 1984

DOI:https://doi.org/10.2172/6754389· OSTI ID:6754389

Steedman, W. G.; Longanbach, J. R.; Muralidhara, H. S.; Folsom, D. W.; Droege, J. W.

The objective of this work is to explore the technoeconomic feasibility of a series of unit operations involving: (1) wet grinding of coal in water; (2) removal of chlorine and sodium, release of undesirable mineral matter, and chemical incorporation, if needed, of a disposable liquefaction catalyst in coal via hot water teatment; (3) oil agglomeration to dewater and deash coal while retaining most of the pyrite; and (4) solvent drying of coal agglomerates to eliminate oxidation of coal, improve coal liquefaction reactivity, save energy and prepare the coal/solvent slurry for liquefaction. An apparatus capable of running five microautoclaves simultaneously has been designed and constructed. The autoclaves are shaken along the long axis to insure good mixing and pressure and temperature can be monitored in each autocalve during the run. Reproducibility experiments indicate that the standard deviation on the conversion to THF solubles is about 2.5 percent. The standard deviations in conversions to preasphaltenes and asphaltenes are much higher. A five-autoclave experiment has confirmed earlier results which indicate that wet grinding and hot-water treatment have little effect on conversion to THF solubles but that oil agglomeration followed by drying in a vacuum oven causes a large increase and oil agglomeration followed by solvent drying causes a significant but smaller increase in conversion. 5 references, 13 figures.

• Research Organization: Battelle Columbus Labs., OH (United States)
• DOE Contract Number: AC22-83PC60045
• OSTI ID: 6754389
• Report Number(s): DOE/PC/60045-T3; ON: DE84014522
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
CATALYSTS
IMPREGNATION
CHLORINE
REMOVAL
COAL
DRYING
OXIDATION
COAL LIQUEFACTION
BENCH-SCALE EXPERIMENTS
COAL PREPARATION
MINERALS
SODIUM
INHIBITION
AGGLOMERATION
AUTOCLAVES
FUEL OILS
GRINDING
HEAT TREATMENTS
IRON HYDROXIDES
PYRITE
RETENTION
WATER
ALKALI METALS
CARBONACEOUS MATERIALS
CHALCOGENIDES
CHEMICAL REACTIONS
COMMINUTION
ELEMENTS
ENERGY SOURCES
FOSSIL FUELS
FUELS
HALOGENS
HYDROGEN COMPOUNDS
HYDROXIDES
IRON COMPOUNDS
IRON SULFIDES
LIQUEFACTION
LIQUID FUELS
MACHINING
MATERIALS
METALS
NONMETALS
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PETROLEUM PRODUCTS
SULFIDE MINERALS
SULFIDES
SULFUR COMPOUNDS
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENT COMPOUNDS
010405* - Coal
Lignite
& Peat- Hydrogenation & Liquefaction
013000 - Coal
Lignite
& Peat- Transport
Handling
& Storage