Coal desulfurization by a microwave process. Technical progress report

Technical Report · Fri Jan 01 04:00:00 EST 1982

OSTI ID:5408414

Zavitsanos, P D; Golden, J A; Bleiler, K W

Desulfurization experiments have been carried out using the moving bed flow reactor to examine the following: (1) hardgrove grindability index of microwave treated coal compared with raw coal; (2) washability of microwave treated coal compared with raw coal; (3) the extent of sulfur and ash removal from alkali/coal treated samples. In the washability experiments, the following treatment sequence was carried out: expose raw coal (1-2'' size) to microwaves (2 kW power level, 120 to 240 sec exposure); crush (30 to 200 mesh); float/sink (1.6 S.G.). Sulfur, ash and CV measurements were made on the float fractions for comparison with similar measurements on raw coal float samples prepared in the same way as microwave treated samples. Table 2 is a summary of the sulfur, ash and calorific value analyses comparing washed with raw coal samples. These data were used to calculate percent energy recovery as shown in the table. It is not possible to conclude from the data taken to date whether there is beneficiation from microwave treated-washed coal since two coals showed increased energy recovery and two did not. Additional washability data will be taken to pursue this question.

• Research Organization: General Electric Co., Philadelphia, PA (USA). Research and Engineering Dept.
• DOE Contract Number: AC22-80PC30142
• OSTI ID: 5408414
• Report Number(s): DOE/PC/30142-T3; ON: DE82007514
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
013000* -- Coal
Lignite
& Peat-- Transport
Handling
& Storage
ALKALI METAL COMPOUNDS
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
COAL
DEASHING
DESULFURIZATION
ELECTROMAGNETIC RADIATION
ENERGY SOURCES
FOSSIL FUELS
FUELS
HYDROGEN COMPOUNDS
HYDROXIDES
MATERIALS
MICROWAVE RADIATION
OXYGEN COMPOUNDS
RADIATIONS
SODIUM COMPOUNDS
SODIUM HYDROXIDES