Coal desulfurization by a microwave process. Technical progress report
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
- Resource Relation:
- Other Information: Portions of document are illegible
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
COAL
DEASHING
DESULFURIZATION
MICROWAVE RADIATION
SODIUM HYDROXIDES
ALKALI METAL COMPOUNDS
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
ELECTROMAGNETIC RADIATION
ENERGY SOURCES
FOSSIL FUELS
FUELS
HYDROGEN COMPOUNDS
HYDROXIDES
MATERIALS
OXYGEN COMPOUNDS
RADIATIONS
SODIUM COMPOUNDS
013000* - Coal
Lignite
& Peat- Transport
Handling
& Storage