Particle size and velocity measurements in the radiant section of an industrial-scale, coal-fired boiler: the effect of coal type

摘要

To improve understanding of the complex phenomena involved in pulverized coal combustion in utility boilers and to develop information suitable for model validation of comprehensive comjbustion coes, a series of measurements was taken on a 160 MW corner-fired, pulverized-coal fired boiler operated by New York State Electric and Gas (NYSEG). Data taken during the complete series of tests consisted of particle size and velocity measurements, gas temperature and velocity measurements, species concentration, wall heat flux and solid sample composition at locations in the radiant section and the convective pass of the boiler. The measurements discussed here include those of particle size, velocity, concentration, and data rate for the full-load, baseline operating condition firing the boiler on different coals. The types of coals used during this test were three bituminous coals, one with a relatively high fixed carbon and low volatiles, labeled coal type B, one with a lower fixed carbon and higher volatiles content, labeled coal type A, and a coal similar to the type A coal in composition, labeled coal type C.