Application of Numerical Methods for Calculating the Burning Problems of Coal-Dust Flame in Real Scale

摘要

The burning of low-grade coals in coal-dust boilers presents considerable difficulties because poor quality fuels adversely affects to the performance of the ignition process, stabilization of the burning torch and process of burning out of fuel, in addition, significantly reduces to the environmental and economic indicators of thermal power plants, as a result of emission of harmful gases (NO, SO, CO) and fly ash. This article presents the numerical methods for calculating the burning problems of coal-dust flame. The increase in moisture of fuel leads to the reduction of average values of temperature and concentration of carbon dioxide in the combustion chamber, and also to the reduction of concentration of carbon monoxide CO and nitrogen oxides NO in the field of combustion.