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Fluidizer of fluidized bed

A fluidized device and fluidized bed technology, applied in the field of fluidized bed fluidized devices, can solve the problems of high energy consumption and large resistance, and achieve the effects of improving desulfurization efficiency, improving load adaptability and saving investment.

Inactive Publication Date: 2007-05-30
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this process is high resistance and high energy consumption at high loads

Method used

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  • Fluidizer of fluidized bed
  • Fluidizer of fluidized bed

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] It is used for flue gas desulfurization of medium-temperature or low-temperature semi-dry circulating fluidized bed spraying lime slurry. The minimum flow rate in venturi pipe throat 3 is 30% of the rated load. And perpendicular to the flue gas inlet 6, the left and right ends are respectively welded to the inner wall of the Venturi tube throat 3 and the Venturi tube expansion section 1. There are seven groups of branch flues 5 that can be closed, and their outlets gradually decrease from the center to the wall. The cross-sectional area of ​​the central branch flue 5 accounts for 15% of the cross-sectional area of ​​the Venturi throat pipe 3, and the cross-sectional areas of the other symmetrical flues are equal, and the cross-sectional areas of the closed flue account for 9%, 7%, and 6.5% respectively . The adjustment baffle 2 is in contact with the deflector 4, its rotation can be manually adjusted, and the shape of the sealing baffle 7 can be controlled by the servo ...

Embodiment 2

[0021] The difference between this embodiment and Embodiment 1 is that there are three groups of branch flues 5 that can be closed, and their outlet heights are equal to 15% of the total area of ​​the horizontal cross-sectional area of ​​the central flue, and the other two groups are 10% of the load at 73 When changing between %~85%, only the central branch flue 5 is closed; when between 55%~73% of the rated load, close the three branch flues 5 and the structure size of the other is the same as that of embodiment 1

Embodiment 3

[0023] The difference between this embodiment and Embodiment 1 is that there is only one closable branch flue 5, which accounts for 20% of the total cross-sectional area; 5 The deflector 4 on the other side is extended so that it can contact the closed adjustment baffle 2 and the sealing baffle 7 is welded to the inner wall of the deflector 4 and the Venturi tube diverging section 1. When the adjustment baffle 2 is closed, they Together, only the triangular prisms with lower openings close the flue at 85% of the rated load, so the adjustment range of the load is 68% to 85% of the rated value, and the rest of the structural dimensions are the same as in Embodiment 1.

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Abstract

A fluidizing unit of fluidized bed is composed of a fume channel, a regulating barrier for controlling the fluidizing air speed, a guide plate, and the throat tubes and gradually expanded segments of Venturi tubes. Its advantages are stable fluidizing speed and high load adaptability.

Description

technical field [0001] The invention belongs to the field of environmental protection and chemical industry, in particular to a fluidized bed fluidization device with load adaptability for fluidized bed fluidization technology Background technique [0002] At present, among the devices used for the removal of industrial waste gas pollutants, the circulating fluidized bed adopting Venturi fluidization is a commonly used one. This kind of circulating fluidized bed has small resistance loss and large flue gas treatment capacity, but the disadvantage is that as the load of the boiler or other devices changes, the fluidization velocity in the Venturi section will change to a greater or lesser extent. For example, "a circulating suspension bed dry flue gas desulfurization process and its system" disclosed in the Chinese patent application number 0012828 5.9, the circulating suspension bed passes through a low-resistance flue gas flow composed of a single or several venturi tubes ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J8/24
Inventor 马春元郝晓文董勇徐夕仁王文容
Owner SHANDONG UNIV
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