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Descending bed

A cylindrical part and air outlet technology, applied in the field of pyrolysis, can solve the problems of complicated structure, high failure rate, easy blockage of sieve holes, etc., and achieve the effects of wide application range, good cloth uniformity and flexible control.

Pending Publication Date: 2017-07-25
SHENWU TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The material distribution system of the lower bed in the related art usually adopts a screen type and a mechanical type. However, the screen hole of the screen type material distribution system is easy to be blocked, and the structure of the mechanical type material distribution system is relatively cumbersome and has a high failure rate.

Method used

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  • Descending bed
  • Descending bed
  • Descending bed

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Such as figure 1 and figure 2 As shown, the descending bed 100 includes: a feed bin 2, a furnace 1 located directly below the feed bin 2, a distributor 3 located in the furnace 1, and an air inlet pipe 4 communicated with the distributor 3, wherein the distributor 3 includes a cylindrical Part 31 and gas outlet pipe 32, the central axis of cylindrical part 31 extends vertically and the top wall 311 is a truncated cone, the vertical distance h between the top wall 311 of cylindrical part 31 and the top inlet of furnace 1 It is substantially equal to the diameter D of the feed port, and the maximum diameter (i.e. the diameter of the lowermost end of the top wall 311) d of the top wall 311 of the cylindrical part 31 is 1 / 3 of the feed port diameter D (that is, d=1 / 3D) , the taper angle θ of the top wall 311 of the cylindrical portion 31 is: 60°≤θ≤120°.

[0049] Such as figure 2 As shown, there are a plurality of circular air outlets 310 arranged in a single row on the...

Embodiment 2

[0052] The structure of the second embodiment is basically the same as that of the first embodiment, the only difference lies in the number and distribution of the air outlets 310 on the cylindrical portion 31 . Such as image 3 As shown, there are two gas outlets 310 on the cylindrical part 31, and each gas outlet 310 includes 8 gas outlets 310, and the 8 gas outlets 310 in each gas outlet 310 are located at the same cross section in the axial direction of the cylindrical part 31 , and the eight air outlets 310 in each air outlet 310 are evenly spaced and distributed in the circumferential direction of the cylindrical portion 31 . In addition, any two of the plurality of air outlets 310 on the cylindrical portion 31 are not facing each other in the axial direction of the cylindrical portion 31 .

Embodiment 3

[0054] The structure of the third embodiment is substantially the same as that of the second embodiment, the only difference lies in the shape and number of the air outlets 310 on the cylindrical portion 31 . Such as Figure 4 As shown, each air outlet 310 is configured in a strip shape.

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PUM

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Abstract

The invention discloses a descending bed, comprising: a furnace, a material bin, a distributor and an air intake pipe, the material bin is arranged above the furnace for injecting materials into the furnace, and the distributor is arranged at Inside the furnace, there is a vertically arranged cylindrical portion with a closed top, and the cylindrical portion has a plurality of gas outlets spaced apart in the circumferential direction and / or axial direction of the cylindrical portion. One end of the air inlet pipe is located outside the furnace, the other end penetrates into the furnace and communicates with the inside of the cylindrical part to supply gas to the inside of the cylindrical part. The gas fed into the cylindrical part passes through multiple The gas outlets are blown out into the furnace to disperse the materials. The descending bed of the present invention has wide application range, good cloth uniformity, simple structure and flexible control.

Description

technical field [0001] The invention relates to the technical field of pyrolysis, in particular to a descending bed. Background technique [0002] The descending bed is a kind of heat exchange equipment that works according to the principle of countercurrent, which has the advantages of short gas-solid contact time, fast heating speed, and small axial back-mixing. Specifically, the working process of the descending bed is to load the material into the furnace through the material distribution equipment on the top of the furnace, and the material continuously falls in the form of free fall, and the hot gas in the furnace exchanges heat with the falling solid particles, so as to realize the material recovery. of heating. [0003] The distribution system of the descending bed is particularly important. The uniformity of the distribution determines the utilization rate of energy consumption and production efficiency. The more uniform the material arrangement, the better the hea...

Claims

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Application Information

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IPC IPC(8): C10B53/00C10J3/56C10J3/50C10J3/82
CPCC10B53/00C10J3/50C10J3/56C10J3/82
Inventor 谢善清常胜良李生忠林景龙吴道洪
Owner SHENWU TECH GRP CO LTD