Bench scale development of the TRW process for cleaning coal (Gravimelt process). Quarterly technical progress report, August-October 1985

Technical Report · Fri Nov 01 04:00:00 EST 1985

OSTI ID:6421724

Construction of the 20 lb per hour modular test plant has been initiated and all major equipment has been received with the exception of the caustic-water evaporator and the rotary kiln, which are scheduled for December and January, respectively. Construction, checkout and shakedown is on schedule with the three sections of the modular test plant planned for completion together with checkout and shakedown by March. A topical report containing the detailed plant design, shakedown plans and a preliminary test plan was submitted to the DOE. A third kiln test was successfully performed at the kiln vendor test facility to provide information on long-term operation of the kiln as well as a supply of coal-caustic products sufficient for shakedown of both the filtration and regeneration sections of the modular test plant. Regeneration verification and intermediate scale up testing, initiated last quarter, was completed resulting in a confirmation and refining of the data previously obtained for regeneration. Considerable information was also generated on the filtration of spent caustic solution. It was determined that mineral matter reject contains only $1 worth of caustic per ton of coal processed. This study will be presented in detail in a topical report to be issued this month. Filtration testing of separation of concentrated caustic-coal slurries was conducted both at laboratory scale utilizing an 0.1 square foot leaf filter and in a commercial one square foot rotary drum vacuum filter. The observed laboratory cake moisture level of 2.6 to 1 w/w decreased to 2.2 when performed in the one square foot rotary vacuum drum filter. 2 figs., 2 tabs.

• Research Organization: TRW Space and Technology Group, Redondo Beach, CA (USA)
• DOE Contract Number: AC22-83PC63032
• OSTI ID: 6421724
• Report Number(s): DOE/PC/63032-T7; ON: DE86003911
• 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
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
CLEANING
COAL
COAL PREPARATION PLANTS
DESULFURIZATION
ENERGY SOURCES
FOSSIL FUELS
FUELS
INDUSTRIAL PLANTS
KILNS
MATERIALS
SEPARATION EQUIPMENT
TESTING
TRW PROCESS