Ash is removed in a coal preparation plant to improve the quality and efficiency of the coal. Here are a few specific reasons:
Increase Energy Content: By removing ash, the overall energy content of the coal is increased. Ash is non-combustible material, so its presence reduces the heating value per unit of weight.
Reduced Transportation Costs: Lowering the amount of non-combustible material means transporting less waste. This can significantly reduce shipping costs.
Environmental Benefits: Ash can contribute to air pollution when coal is burned. Removing it beforehand helps to lower emissions of pollutants like sulfur dioxide and particulate matter.
Improved Combustion Efficiency: Cleaner coal burns more efficiently and with fewer by-products, which can improve the overall performance of coal-fired power plants and other industrial applications.
Better Performance of Equipment: Ash can cause wear and tear on equipment such as boilers and furnaces. Reducing its content can extend the lifespan of these machines.
By removing ash, coal preparation plants optimize the coal product for various uses while also addressing economic and environmental concerns.
