Co-firing High Sulfur Coal with Refuse Derived Fuels. Technical Progress Report {number_sign}11

Technical Report · Sat May 31 04:00:00 EDT 1997

DOI:https://doi.org/10.2172/622588· OSTI ID:622588

Pan, Wei-Ping; Riley, John T; Lloyd, William G

The objective of this quarter of study was to prepare fuel pellets containing PVC, newspaper and plastics to be co-fired with coal in the AFBC combustor. The Western Kentucky University atmospheric fluidized bed combustion system requires the fuel to fall from a bunker into a lock-hopper, and from there into a mixing box where the fuel is auger-fed under pressure into the bottom of the fluidized bed. The fuel must flow freely out of the bunker and through the lock- hopper for proper feeding into the combustor. In order for the fuel to continuously fall through these units and into the mixing box during combustion, the density of the fuel and the size of the particles must meet certain requirements. The particles must be no larger than 3/8 inches in diameter and must have a density approaching that of coal. Loose materials such as sawdust, shredded paper products and most shredded plastics do not feed properly in the WKU AFBC system. Bridging and blockage of feed chutes result, even with constant vibration of parts of the feed mechanism. It is not possible to run the AFBC system powered solely by these loose materials.

• Research Organization: Western Kentucky Univ., Bowling Green, KY (United States). Dept. of Chemistry
• Sponsoring Organization: USDOE Assistant Secretary for Fossil Energy, Washington, DC (United States)
• DOE Contract Number: FG22-94PC94211
• OSTI ID: 622588
• Report Number(s): DOE/PC/94211--T12; ON: DE97054030
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
COAL
COCOMBUSTION
COMBUSTORS
PAPER
PELLETS
PLASTICS
PROGRESS REPORT
SOLID WASTES