Energy-saving wind distributor for circulation fluidized bed boiler

The utility model relates to a distributor of air of a boiler, in particular to an energy-saving distributor of air for a circulating fluidized bed boiler, which belongs to the technical area of energy saving in a boiler. The utility model mainly comprises a plenum, an inferior combustion chamber, a grid plate with and air hole, and an air cap. Heat insulating layers are equipped on both the inferior surface and the superior surface of the grid plate. The air hole on the grid plate is connected with the plenum by an air conduit. The air cap is equipped on the top of core tube which is fixed at the superior part of the grid plate. The utility model is characterized in that among the following five spots, the intake A of the air conduit, the intake B of the air hole, the outtake C of the air hole, the upper part D in the core tube and the upper part E of the out side of the core tube, one or more corners are arch-shaped. The existence of arch-shaped corners can effectively reduce the air resistance, reduce the power consumption of the air blower, make the combustion complete, save energy and improve the economical benefit.