Operating Data Fluidized Bed Boiler, East Stroudsburg University. Operating Data, September 5, 1984-December 31, 1985

摘要

Fuel quality was a persistent problem and caused interruptions in operation. Because of a work stoppage at the primary fuel supplier, culm had to be procured from an alternate source. This fuel was unprocessed (i.e., came directly from a silt pond) and composition varied greatly, with much of the material falling outside of the design fuel specification. The substitute fuel, which came from farther north in the anthracite fields, was also lower in volatile material and less free burning. Very fine fuel (60% passing 60 mesh) delivered in October tended to blow through the bed before being completely burned. Accordingly, combustion efficiency was low and ignition difficult. Startup difficulties ultimately forced a shutdown of the system pending a resolution of the fuel quality control problem. Normal operation was resumed in November with the subsequent delivery of coarser material (25% below 60 mesh). In December, fuel having high ash content (up to 58%) and excessive fines overloaded the bed hopper ash removal system, resulting in a shutdown. (ERA citation 10:019843)