Bench scale development of the TRW process for cleaning coal (gravimelt process): Quarterly technical progress report for the period February 1986-April 1986

Technical Report · Fri May 23 04:00:00 EDT 1986

OSTI ID:7055796

The objective of this phase of the project is to shakedown and operate a modular bench scale plant for testing the Gravimelt Process for desulfurization and demineralization of coal and to evaluate the processing of three coals, Pittsburgh No. 8, Kentucky No. 11, and Middle Kittanning. The plant consists of four modules, each operated sequentially and independently. These are: (1) the reaction section with a 14 inch diameter by 12 foot heated section rotary kiln as the major equipment, (2) the coal filtration module which includes a dissolver and wash tanks as well as a one square foot Bird rotary drum vacuum filter and associated tankage and pumps, (3) the spent caustic liquor and spent sulfuric acid regeneration module consisting of reaction tanks, feed tanks, a Bird solid bowl centrifuge for separation of mineral products and a polishing filter as the main equipment, and (4) the caustic evaporator system for conversion of the regenerated caustic liquor to anhydrous caustic for recycle to the kiln. Each module is designed for separate operation, where the product from one module becomes the feed to the next. The reaction, filtration, and regeneration modules have been constructed and the evaporator module major equipment, instrumentation, and piping has been installed. Kiln product from each of the three coals was then washed in the filtration module at several caustic levels, beginning with 50%, as well as acid and water washes to provide filtration data for specifying a complete Gravimelt washing process train. 5 tabs.

• Research Organization: TRW Space and Technology Group, Redondo Beach, CA (USA)
• DOE Contract Number: AC22-83PC63032
• OSTI ID: 7055796
• Report Number(s): DOE/PC/63032-T11; ON: DE87003129
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010300* -- Coal
Lignite
& Peat-- Preparation-- (1987-)
ALKALI METAL COMPOUNDS
BENCH-SCALE EXPERIMENTS
CARBONACEOUS MATERIALS
COAL
COAL PREPARATION
COMPARATIVE EVALUATIONS
DATA
ENERGY SOURCES
EXPERIMENTAL DATA
FILTRATION
FOSSIL FUELS
FUELS
GRAVIMELT PROCESS
HYDROGEN COMPOUNDS
HYDROXIDES
INFORMATION
KILNS
MATERIALS
NUMERICAL DATA
OXYGEN COMPOUNDS
POTASSIUM COMPOUNDS
POTASSIUM HYDROXIDES
REGENERATION
SEPARATION PROCESSES
SODIUM COMPOUNDS
SODIUM HYDROXIDES