Vertical coal-fired boiler,A head, drum, top Furnace, Furnace, bending pipe and other components. Vertical bending the structural features of water-tube boilers are:  Furnace that has the curved pipe, increasing the radiation heating surface. However, a larger Furnace water level, lower the oven temperature, therefore, generally suitable for burning high quality coal. Such as the increase in the furnace refractory bricks, to maintain a high temperature, can also use the low quality coal species. Better water circulation.