SYSTEM FOR FIRING COAL HAVING A SIGNIFICANT MINERAL CONTENT IN A FURNACE AND A METHOD OF GENERATING STEAM FIRING SUCH COAL IN THE FURNACE OF A STEAM GENERATOR

摘要

pA conventional pulverized coal-fired furnace is supplied fuel at two different levels. The raw coal is classified into a stream of relatively pure coal ground to conventional fineness for burners at the lower level, and a stream of very finely divided coal with a large, heavy mineral content for burners at the higher level./p[US4438709A]