Stepped differential-velocity fluidized bed cooler

A fluidized bed cooler, a stepped technology, applied in the field of fluidized bed coolers, can solve the problems of poor cooling effect, high discharge temperature, uneven discharge particle temperature, etc., to achieve improved cooling efficiency, uniform temperature, good cooling effect

Inactive Publication Date: 2012-05-02
HARBIN INST OF TECH
4 Cites 18 Cited by

AI-Extracted Technical Summary

Problems solved by technology

[0003] In order to solve the problems of the existing fluidized bed coolers, such as excessively high discharge temperature, poor cooli...
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Method used

Embodiment five: As shown in Figure 1, the height difference H3 between the air cap 3 on the highest air distribution plate 2 of this embodiment and the air cap 3 on the lowest air distribution plate 2 is 500-4000mm. This design avoids the inconvenience of operation and management due to the large height difference, while ensuring effective cooling. The other components and connections are the same as those in Embodiment 1, 2 or 4.
Step differential fluidized bed cooler of the present invention is divided into the first stage fluidized bed subbed A, the second stage fluidized bed subbed B successively along the feed to the discharge direction of fluidized bed main body 1 , The third-stage fluidized bed sub-bed C...the N-stage fluidized bed sub-bed. Differential speed operation is implemented between the fluidized sub-beds at all levels to achieve the best cooling effect.
[0012] Specific embodiment three: as shown in Figure 1, the height difference H2 between the air caps 3 on two adjacent air distribution plates 2 of this embodiment is 200-500mm. This design ensures the fluidization height of adjacent fl...
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Abstract

The invention discloses a stepped differential-velocity fluidized bed cooler relating to a fluidized bed cooler. The invention aims to solve the problems of overhigh discharging temperature, poor cooling effect and non-uniform discharged grain temperature in the traditional fluidized bed cooler. A feeding pipe is communicated with the side wall at one end of a fluidized bed main body; an outer side wall at the other end of the fluidized bed main body is provided with an exhaust pipe and a first discharging pipe from the top down; a plurality of air chambers are arranged in the fluidized bed main body; the air chambers are arranged in sequence from high to low along the feeding-to-discharging direction of the fluidized bed main body; the upper end of each air chamber is provided with an air distribution plate; each air distribution plate is provided with a second discharging pipe; a plurality of air distribution holes are uniformly distributed and processed on each air distribution plate; a hood is arranged at each air distribution hole; an overflow plate is vertically arranged between every two adjacent air distribution plates; and the height of each overflow plate is sequentially and progressively reduced along the feeding-to-discharging direction of the fluidized bed main body. The stepped differential-velocity fluidized bed cooler is used for high-temperature granular materials in the cooling industry field.

Application Domain

Direct contact heat exchangers

Technology Topic

Image

  • Stepped differential-velocity fluidized bed cooler
  • Stepped differential-velocity fluidized bed cooler

Examples

  • Experimental program(6)

Example Embodiment

[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.

Example Embodiment

[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.

Example 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.
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Description & Claims & Application Information

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