A gas distribution plate for vibrating fluidized bed

A gas distribution plate and plate body technology, which is applied in chemical/physical processes, chemical instruments and methods, etc., can solve the problems of distribution plate thickness, high probability of collision between particles and cone cap, complex structure, etc.

Active Publication Date: 2022-05-17
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The inclined-hole gas distribution plate is an optimized form of the direct-flow gas distribution plate. It has a larger air distribution area and has a guiding effect. The guiding direction is adjusted according to the angle of the inclined hole. The disadvantage is that the distribution plate is relatively thick to form the angle of the inclined hole, resulting in loss of resistance. Big
The side-flow gas distribution plate is not easy to leak and clog, and eliminates the generation of dead beds, but the structure is relatively complicated, it is not easy to manufacture, it has no guiding function, and the probability of collision between particles and the cone cap is high

Method used

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  • A gas distribution plate for vibrating fluidized bed
  • A gas distribution plate for vibrating fluidized bed
  • A gas distribution plate for vibrating fluidized bed

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Figure 8 An arrangement of gas distribution holes is given. Straight holes 1 are arranged in an equilateral triangle with side length L 3 = L 4 =20mm, α=60°, a straight hole 1 is arranged on the opposite side of the opening direction of each ellipsoidal curved surface guide hole 2 with a chamfered angle, and the exit of the ellipsoidal curved surface guide hole 2 with a chamfered angle is to the opposite side of the opening direction The center distance L of the set straight hole 1 2 is 15.5mm. Ellipsoidal surface guide hole with chamfer 2 long L 1 , width B 1 , high H 1 They are 8mm, 5.5mm, and 2mm respectively, and the cutting angle θ is 120°. The matching straight hole 1 has a diameter of 4mm, and the diameter of the straight hole is 0.73 times the width of the guide hole on the ellipsoidal surface with chamfered corners. The plate body 3 has a thickness of 2mm. use Figure 8 The structure of the gas distribution plate is shown, and the size of the distrib...

Embodiment 2

[0050] Figure 9 A gas distribution plate arrangement is given. The straight holes 1 are arranged in a rectangle, and the distance between the centers of two adjacent straight holes is L 5 =35mm, distance L between two adjacent rows of straight holes 6 = 20mm. A straight hole 1 is arranged on the opposite side of the opening direction of each ellipsoidal curved surface guide hole 2 with a chamfered angle, and the center distance from the exit of the ellipsoidal curved surface guide hole 2 with a chamfered angle to the straight hole 1 set on the opposite side of the opening direction L 2 is 15.5mm. Ellipsoidal surface guide hole with chamfer 2 long L 1 , width B 1 , high H 1 They are 8mm, 5.5mm, and 2.04mm respectively, and the cutting angle θ is 90°. The matching straight hole 1 has a diameter of 5.5mm, and the diameter of the straight hole is 1 time of the width of the guide hole on the ellipsoidal surface with chamfered corners. The plate body 3 has a thickness of 2...

Embodiment 3

[0052] Figure 10 A gas distribution plate arrangement method is given, the straight holes 1 are arranged in a square, and the distance between the centers of two adjacent straight holes is L 5 =35mm, distance L between two adjacent rows of straight holes 6 = 35mm. A straight hole 1 is arranged on the opposite side of the opening direction of each ellipsoidal curved surface guide hole 2 with a chamfered angle, and the center distance from the exit of the ellipsoidal curved surface guide hole 2 with a chamfered angle to the straight hole 1 set on the opposite side of the opening direction L 2 is 15.5mm. Ellipsoidal surface guide hole with chamfer 2 long L 1 , width B 1 , high H 1 They are 8mm, 5.5mm, and 1.31mm respectively, and the cutting angle θ is 165°. The matching straight hole 1 has a diameter of 7mm, and the diameter of the straight hole is 1.27 times the width of the guide hole on the ellipsoidal surface with chamfered corners. The plate body 3 has a thickness ...

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Abstract

The invention relates to a gas distribution plate for a vibrating fluidized bed. Including straight holes, ellipsoidal surface guide holes with chamfered angles and plate body; ellipsoidal curved surface guide holes with chamfered angles and straight holes are arranged alternately on the plate body. Each ellipsoid curved surface guide hole with a chamfered angle is provided with a straight hole on the opposite side of the hole opening direction; the distance from the straight hole to the opposite side of the hole opening direction from the same ellipsoid curved surface guide hole with a chamfered angle is less than the distance to the straight hole on the side of the hole opening direction . The straight holes are arranged in a triangular and rectangular way, and the arrangement of the guide holes on the ellipsoid surface with chamfered corners follows the arrangement of the straight holes. The use of this gas distribution plate makes the gas distribution more uniform; it can not only guide but also make the particles produce a good fluidized state, and can continue stably; reduce the force and probability of particles colliding with the distribution plate; the opening structure is not easy to block , damage, can reduce the number of dead zones in the bed; strengthen the disturbance of the gas phase near the surface of the gas distribution plate, so that the particles can fully contact with the hot air; the structure is simple and easy to manufacture.

Description

technical field [0001] The invention relates to a gas distribution plate, in particular to a gas distribution plate for a vibrating fluidized bed. Background technique [0002] Fluidized bed has good solid fluidity and heat and mass transfer characteristics, so it is widely used in petroleum, chemical industry, energy, environmental protection, pharmaceutical, food processing and other fields. In practical applications, most of the dry materials are non-spherical particles. Compared with spherical particles, non-spherical particles have the characteristics of anisotropy and poor fluidity. At present, there are two ways to increase the fluidity of non-spherical particle materials: one is to use a common fluidized bed with a gas distribution plate with a guiding function, such as an oblique hole gas distribution plate; the other is to use vibratory fluidization The bed relies on the combined action of vibration and gas distribution plates. In an ordinary fluidized bed, air ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J8/18B01J8/40
CPCB01J8/40B01J8/1818
Inventor 王晓静苏伟臧明华武宸宇
Owner TIANJIN UNIV
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