Stepped differential-velocity fluidized bed cooler

[0009] Specific implementation one: as figure 1 As shown, the stepped differential fluidized bed cooler in this embodiment includes a fluidized bed body 1, a feed pipe 5, an exhaust pipe 6, a first discharge pipe 8, a plurality of second discharge pipes 9, and a plurality of second discharge pipes 9. A plurality of air chambers 10, a plurality of air distribution plates 2, a plurality of air caps 3 and a plurality of overflow plates 7, one end of the feed pipe 5 is installed on the side wall of one end of the fluidized bed main body 1 and is connected with the fluidized bed main body. 1 is connected to the inner cavity of the fluidized bed body 1, and an exhaust pipe 6 and a first discharge pipe 8 are arranged from top to bottom on the outer side wall of the other end of the fluidized bed main body 1. The exhaust pipe 6 and the first discharge pipe 8 They are all communicated with the inner cavity of the fluidized bed main body 1, the plurality of air chambers 10 are arranged in the inner cavity of the fluidized bed main body 1, and the plurality of air chambers 10 are fed along the fluidized bed main body 1. The directions are arranged in order from high to low. The upper end of each air chamber 10 is provided with an air distribution plate 2, and each air distribution plate 2 is provided with a second discharge pipe 9. Each air distribution plate 2 is evenly distributed and processed. There are a plurality of air distribution holes 2-1, each air distribution hole 2-1 is provided with an air cap 3, and an overflow plate 7 is vertically arranged between two adjacent air distribution plates 2. The height of the plate 7 decreases sequentially along the feeding to the discharging direction of the fluidized bed main body 1 .

[0010] The stepped differential fluidized bed cooler of the present invention is sequentially divided into a first-stage fluidized bed sub-bed A, a second-stage fluidized bed sub-bed B, and a third-stage fluidized bed sub-bed B along the feeding to the discharging direction of the fluidized bed main body 1. Stage fluidized bed subbed C... Nth stage fluidized bed subbed. Differential speed operation is implemented between the fluidized sub-beds of each stage to achieve the best cooling effect.

[0011] Specific implementation two: as figure 1 As shown, the height difference H1 between two adjacent air distribution boards 2 in this embodiment is 180-550 mm. This design ensures that there is a height difference between adjacent fluidized sub-beds, and the fluidized material enters the next stage smoothly. Other components and connection relationships are the same as in the first embodiment.

[0012] Specific implementation three: as figure 1 As shown, the height difference H2 between the air caps 3 on two adjacent air distribution panels 2 in this embodiment is 200-500 mm. This design ensures the fluidization height of the adjacent fluidized sub-beds and prevents the exchange and back-mixing of particles in the adjacent fluidized sub-beds. Other compositions and connection relationships are the same as in the first or second embodiment.