Pulverized coal firing system

Pulverized Coal Firing System. This bin may contain from 12 to 24 hrs. The mixture of coal powder and the air is fired in the steam boiler furnace to achieve most efficient combustion process. Pulverized Coal-Fired Boilers The conventional pulverized fuel systems include both wall-fired and tangentially fired arrangements. The finer the grinding of coal the more efficient its combustion.

Supply of pulverized coal. In the air-conveyed direct-fired coal pulverizing system used extensively in the industry today there normally exists a combustible coal air mixture in the burner lines and pulverizer equipment. Pulverized coal is the most widely used fuel in the steel sector. This bin may contain from 12 to 24 hrs. Large amount of heat release is possible in this system compared to stoke firing system. Pulverized coal PC combustion is presently the system of choice for coal-fired power-generating plants.

Combustion of pulverized coal can readily be adopted to automatic control.

For example in a pulverized coal power station a grate firing system may be installed at the bottom of the combustion chamber though this solution is rare. The direct injection of pre-milled biomass into the pulverised coal pipework 4. The pulverized coal produces fly ashes. The direct injection of pre-milled biomass into modified coal. Hence there is the continual danger of fires and under certain conditions explosions. Disadvantages of Pulverized Coal Firing The initial investment in pulverized coal firing system is more compared to solid firing system.