Pilot Plant Program for the AED Advanced Coal Cleaning System. Phase II. Interim final report

Technical Report · Fri Aug 01 00:00:00 EDT 1980

OSTI ID:6515288

Advanced Energy Dynamics, Inc. (AED), has developed a proprietary coal cleaning process which employs a combination of ionization and electrostatic separation to remove both sulfur and ash from dry pulverized coal. The Ohio Department of Energy sponsored the first part of a program to evaluate, develop, and demonstrate the process in a continuous-flow pilot plant. Various coals used by Ohio electric utilities were characterized and classified, and sulfur reduction, ash reduction and Btu recovery were measured. Sulfur removal in various coals ranged from 33 to 68% (on a Btu basis). Ash removal ranged from 17 to 59% (on a Btu basis). Ash removal of particles greater than 53 microns ranged from 46 to 88%. Btu recovery ranged from 90 to 97%. These results, especially the large percentage removal of ash particles greater than 53 microns, suggest that the AED system can contribute materially to improved boiler performance and availability. The study indicated the following potential areas for commercial utilization of the AED process: installation between the pulverizer and boiler of conventional coal-fired power utilities; reclamation of fine coal refuse; dry coal cleaning to supplement, and, if necessary, to take the place of conventional coal cleaning; upgrading coal used in: (1) coal-oil mixtures, (2) gasification and liquefaction processes designed to handle pulverized coal; and (3) blast furnaces for making steel, as a fuel supplement to the coke. Partial cleaning of coking coal blends during preheating may also prove economically attractive. Numerous other industrial processes which use pulverized coal such as the production of activated carbon and direct reduction of iron ore may also benefit from the use of AED coal cleaning.

• Research Organization: Advanced Energy Dynamics, Inc., Natick, MA (USA)
• OSTI ID: 6515288
• Report Number(s): NP-4901797; ON: TI84901797
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
COAL
DEASHING
DESULFURIZATION
LOSSES
COAL PREPARATION
ELECTROSTATICS
PILOT PLANTS
AVAILABILITY
BOILERS
COMMERCIALIZATION
ECONOMICS
EXPERIMENTAL DATA
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
DATA
ENERGY SOURCES
FOSSIL FUELS
FUELS
FUNCTIONAL MODELS
INFORMATION
MATERIALS
NUMERICAL DATA
013000* - Coal
Lignite
& Peat- Transport
Handling
& Storage