Bench-scale development of the gravimelt process for cleaning coal: Final report

Technical Report · Sat Aug 01 04:00:00 EDT 1987

OSTI ID:6187075

The objectives of this project are to perform preliminary bench-scale testing, design, construction, shakedown and operation of a 20 lbs of coal per hour modular test circuit to demonstrate the feasibility of the Gravimelt (Molten-Caustic-Leaching) technology for producing coal that meets New Source Performance Standards (NSPS). This is to be accomplished while processing three coals representative of the Eastern United States coal production. The coal seams selected were Pittsburgh No. 8, Kentucky No. 11 and Middle Kittanning. Bench-scale tests for regeneration, filtration and rector type were performed to obtain design data for scale-up 20 lbs of coal per hour. On the basis of this data, a modular test circuit was constructed and each unit was operated on a sequential but not simultaneous basis. Coal was produced with sulfur content well under the New Source Performance Standards and with equipment performance consistent with commercial design requirements. An assessment of the results indicates that the next step in bench-scale testing should be the installation of multiple stages of countercurrent washing capability which will allow real-time linkage of the modules for long-term steady state operation. 52 figs., 56 tabs.

• Research Organization: TRW Space and Technology Group, Redondo Beach, CA (USA). Applied Technology Div.
• DOE Contract Number: AC22-83PC63032
• OSTI ID: 6187075
• Report Number(s): DOE/PC/63032-T19; ON: DE89009052
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010402* -- Coal
Lignite
& Peat-- Purification & Upgrading
BENCH-SCALE EXPERIMENTS
CARBONACEOUS MATERIALS
CLEANING
COAL
DESIGN
DOCUMENT TYPES
ENERGY SOURCES
FILTRATION
FOSSIL FUELS
FUELS
GRAVIMELT PROCESS
MATERIALS
PROGRESS REPORT
REGENERATION
SEPARATION PROCESSES
SPECIFICATIONS
SULFUR CONTENT
TESTING
WASHING