Analysis of the Burnout Time of Superfine Pulverized Anthracite Coal during Combustion in Industrial Boiler

A model for the combustion of superfine pulverized anthracite coal in industrial boiler combustor was built, and by taking Yangquan anthracite coal and 3 Fujian anthracite coal as specific objects, the burnout time of these pulverized anthracite coal with different particle sizes of 20∼75μm under a range of ambient temperatures was calculated. Research shows that: The burnout time of Fujian anthracite of particle size between 20∼75μm is 0.5∼2.5s at the ambient temperature of 1100°C, and that of Yangquan anthracite of particle size between 20∼75μm is 0.3∼1s at the ambient temperature of 1200°C.