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Title: R D for the storage, transport, and handling of coal-based fuels

Abstract

The product of several advanced physical coal cleaning processes is a dry, ultrafine coal (DUC), in the order of 10 microns mean mass diameter. To utilize this fuel commercially, cost-effective, environmentally safe systems must be provided for the storage, transport, and handling of this finely divided form of fuel. The objective of this project is the development of total logistics systems for DUC, including experimental verification of key features. The systems to be developed will provide for safe, economic, and environmentally protective storage and delivery of DUC for residential, commercial, and industrial uses. This quarter, the rotary feeder for the Residential Tank is being modified because of jamming which occurred during shakedown testing with poly methlymethacrylate particles; shear stress measurements (Jenkie shear cell) indicate that Upper Elkhorn DUC has a higher solids strength than Wyodak coal and will be more difficult to handle. Upon consolidation, the Illinois No. 6 coal with asphalt binder becomes much stronger than either of the other coals and is expected to be the most difficult to handle. Deaeration tests indicate that the deaeration (rate at which a fluidized bed losses its gas content) is strongly influenced by the moisture content of the coal. Experiments havemore » shown that the pickup velocity (i.e., the gas velocity at which particles at the bottom of a horizontal pipe are entrained) is a function of Froude number. The relatively high gas velocities for pickup are caused by the surface forces acting among the fine particles of coal. 17 figs.« less

Publication Date:
Research Org.:
Westinghouse Electric Corp., Pittsburgh, PA (United States). Advanced Energy Systems Div.
Sponsoring Org.:
USDOE; USDOE, Washington, DC (United States)
OSTI Identifier:
5530294
Report Number(s):
DOE/PC/89797-T2
ON: DE91016807
DOE Contract Number:  
AC22-89PC89797
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
01 COAL, LIGNITE, AND PEAT; COAL; MATERIALS HANDLING; STORAGE; ADHESION; FLUIDIZATION; FUEL SLURRIES; PROGRESS REPORT; SHEAR; TRANSPORT; CARBONACEOUS MATERIALS; DISPERSIONS; DOCUMENT TYPES; ENERGY SOURCES; FOSSIL FUELS; FUELS; MATERIALS; MIXTURES; SLURRIES; SUSPENSIONS; 013000* - Coal, Lignite, & Peat- Transport, Handling, & Storage; 010600 - Coal, Lignite, & Peat- Properties & Composition

Citation Formats

. R D for the storage, transport, and handling of coal-based fuels. United States: N. p., 1990. Web.
. R D for the storage, transport, and handling of coal-based fuels. United States.
. 1990. "R D for the storage, transport, and handling of coal-based fuels". United States.
@article{osti_5530294,
title = {R D for the storage, transport, and handling of coal-based fuels},
author = {},
abstractNote = {The product of several advanced physical coal cleaning processes is a dry, ultrafine coal (DUC), in the order of 10 microns mean mass diameter. To utilize this fuel commercially, cost-effective, environmentally safe systems must be provided for the storage, transport, and handling of this finely divided form of fuel. The objective of this project is the development of total logistics systems for DUC, including experimental verification of key features. The systems to be developed will provide for safe, economic, and environmentally protective storage and delivery of DUC for residential, commercial, and industrial uses. This quarter, the rotary feeder for the Residential Tank is being modified because of jamming which occurred during shakedown testing with poly methlymethacrylate particles; shear stress measurements (Jenkie shear cell) indicate that Upper Elkhorn DUC has a higher solids strength than Wyodak coal and will be more difficult to handle. Upon consolidation, the Illinois No. 6 coal with asphalt binder becomes much stronger than either of the other coals and is expected to be the most difficult to handle. Deaeration tests indicate that the deaeration (rate at which a fluidized bed losses its gas content) is strongly influenced by the moisture content of the coal. Experiments have shown that the pickup velocity (i.e., the gas velocity at which particles at the bottom of a horizontal pipe are entrained) is a function of Froude number. The relatively high gas velocities for pickup are caused by the surface forces acting among the fine particles of coal. 17 figs.},
doi = {},
url = {https://www.osti.gov/biblio/5530294}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 1990},
month = {Mon Jan 01 00:00:00 EST 1990}
}

Technical Report:
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