Pulverized Power Plant Boiler for design coal having improved anthracite mixing combustion characteristics

摘要

The present invention relates to an anthracite coal mixed with a design coal and a coal-fired power plant boiler with improved anthracite-mixed combustion characteristics capable of improving the combustion characteristics of a design coal through improvement of the boiler. A feature of the present invention is that a design coal mixed with anthracite of the ASTM D388-12 condition improved in combustion characteristics is pulverized and then transferred to the combustion furnace 100 by an oxidizing agent supplied from the outside, In the boiler, the anthracite coal contained in the designed coal has an average particle size (Dp50) of less than 75 占 퐉 and an anthracite fraction of an average particle size of 50% to 99%, and the combustion furnace 100 has an injector 300 And a plurality of the injectors 300 are provided so as to be vertically spaced from the combustion furnace 100 so that bituminous coal is injected in the injector 300 positioned above the combustion furnace 100, The design charcoal mixed with bituminous coal and anthracite coal is injected.