Mulled coal - a beneficiated coal form for use as a fuel or fuel intermediate. Technical progress report No. 11, October 1, 1992--December 31, 1992
Under the auspices of the DOE and private industry, considerable progress has been made in: preparation of coal-water fuels; combustion of low-ash coal-based fuel forms; processes to provide deeply-cleaned coal. Developments in advanced beneficiation of coal to meet stringent requirements for low ash and low sulfur can be anticipated to further complicate the problem areas associated with this product. This is attributable to the beneficiated coal being procured in very fine particles with high surface areas, modified surface characteristics, reduced particle size distribution range, and high inherent moisture. Experience in the storage, handling, and transport of highly beneficiated coal has been limited. This is understandable, as quantities of such product are only now becoming available in meaningful quantities. Since the inception of the project, the authors have: developed formulations to stabilize wet filter cake into a granular free flowing material (Mulled Coal); applied the formulation to wet cake from a variety of coal sources ranging from anthracite to subbituminous coal; evaluated effects of moisture loss on mull properties; developed design concepts for equipment for preparing the Mulled Coal and converting it into Coal Water Fuel; obtained storage and handling system design data for the granular coal; completed the 74-day aging study on various mull formulations to determine the effects of time and exposure on mull properties; demonstrated the continuous production of mulled coal from wet filter cake; performed atomization studies on Mulled Coal and CWF prepared from Mulled Coal; developed a standardized set of empirical tests to evaluate handling characteristics of various mull formulations; completed integrated, continuous mulling process circuit design. During this report period they have completed coal aging studies; plant design is being reviewed; and final report preparation has begun.
- Research Organization:
- Energy International Corp., Pittsburgh, PA (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC22-90PC90167
- OSTI ID:
- 10150646
- Report Number(s):
- DOE/PC/90167-T14; ON: DE94012008; TRN: 94:005491
- Resource Relation:
- Other Information: PBD: Jan 1993
- Country of Publication:
- United States
- Language:
- English
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Mulled Coal: A beneficiated coal form for use as a fuel or fuel intermediate. Technical progress report No. 7, October 1, 1991--December 31, 1991
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