Bench scale development of the TRW process for cleaning coal (gravimelt process). Quarterly technical progress report, August-October 1984

Technical Report · Fri Nov 23 04:00:00 EST 1984

OSTI ID:6040302

Important progress has been made in all of the mojor process unit operations of the Gravimelt Process. Beginning with data that shows that molten caustic size reduces (comminuates) 3/8'' top size coal to a size giving excellent desulfurization and demineralization rates, including material balance results for operation of the 20 lb/hr leacher on Kentucky No. 11 coal and also including countercurrent molten caustic washing at the 20 lb/hr rate of Gravimelt reacted coal resulting in a product Pittsburgh No. 8 coal which is similar in ash and sulfur to a No. 2 fuel oil. In addition, laboratory scale demonstration of caustic regeneration by two different routes has been accomplished. An additional coal for the program was received from the Ames Laboratory which has high organic sulfur. This coal was tested at laboratory scale, to provide information prior to testing at bench scale, in which it is shown that this coal can be reduced in sulfur content to a value 1/3 lower than required by the New Source Performance Standards and the ash can be reduced to below 0.1%. 2 figures, 11 tables.

• Research Organization: TRW, Inc., Redondo Beach, CA (USA)
• DOE Contract Number: AC22-83PC63032
• OSTI ID: 6040302
• Report Number(s): DOE/PC/63032-T5; ON: DE85004377
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010402* -- Coal
Lignite
& Peat-- Purification & Upgrading
013000 -- Coal
Lignite
& Peat-- Transport
Handling
& Storage
ALKALI METAL COMPOUNDS
ASH CONTENT
BENCH-SCALE EXPERIMENTS
CARBONACEOUS MATERIALS
COAL
DATA
DISSOLUTION
ENERGY SOURCES
EXPERIMENTAL DATA
FOSSIL FUELS
FUELS
GRAVIMELT PROCESS
HYDROGEN COMPOUNDS
HYDROXIDES
INFORMATION
LEACHING
MATERIAL BALANCE
MATERIALS
NUMERICAL DATA
OXYGEN COMPOUNDS
POTASSIUM COMPOUNDS
POTASSIUM HYDROXIDES
REGENERATION
RESEARCH PROGRAMS
SEPARATION PROCESSES
SODIUM COMPOUNDS
SODIUM HYDROXIDES
SULFUR CONTENT