Modelling Combustion of High-Ash Indian Coal in a Drop Tube Furnace

Numerical simulations of coal combustion of two samples with varying ash content are performed in a drop tube furnace (DTF) to mimic the particle heating rates observed in industrial furnaces. The combustion performance of high-ash Indian coal is explored through particle tracking and mass fractions of various products of combustion. Inferences are drawn about the role of varying ash content on the overall combustion performance. It is found that the high-ash content coal sample has a tendency to produce less \(NO_x\) and enhanced combustion performance, as it falls within an optimum ash percentage range.