Stepped circulating fluidized bed boiler air distribution device

The utility model discloses a stepped circulating fluidized bed boiler air distribution device, and mainly relates to the field of boiler air distribution devices. The boiler comprises a hearth, an air distribution plate is arranged at the bottom of the hearth in an inclined mode, an air chamber is arranged at the bottom of the air distribution plate, a plurality of installation blocks are arranged on the air distribution plate, the installation blocks are distributed in a stepped mode in the inclined direction of the air distribution plate, and L-shaped directional air caps are arranged on the installation blocks. The utility model has the beneficial effects that on the basis of ensuring the deslagging efficiency, the impact abrasion of the rear row of air caps to the front row of air caps is reduced, the service life of the air caps is prolonged, and the operation period of the boiler is prolonged, so that the safety and the economy are improved, and meanwhile, the maintenance is convenient. 本实用新型公开了一种阶梯型循环