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A composite diversion internal component applied to an electrostatic bag precipitator

A technology of internal components and dust collectors, which is applied in the direction of combined devices, chemical instruments and methods, and separation of dispersed particles, which can solve the problems of increased resistance of flow guide components, large load of front filter bags, and small resistance of dust removal units. The effect of resistance, extension of filter bag life, and improvement of overall dust removal efficiency

Active Publication Date: 2015-09-30
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, there are mainly two ways to connect the electrostatic precipitator area and the bag precipitator area in the electrostatic bag precipitator. One is direct connection, the airflow passes through the electrolytic precipitator area and directly enters the bag precipitator area, and the filter bags in the front row of the bag precipitator area are less washed out. Large, causing serious wear of the filter bag, secondly, it also causes uneven air distribution in the bag dust removal area, the load of the front filter bag is large, but the overall resistance of the dust removal unit is small; the other is connected by a flow guide member, but the flow guide Components will cause increased resistance, and part of the airflow will even flow back into the electrostatic precipitator area, affecting the dust removal efficiency of the electrostatic precipitator area

Method used

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  • A composite diversion internal component applied to an electrostatic bag precipitator
  • A composite diversion internal component applied to an electrostatic bag precipitator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Such as figure 1 , figure 2 As shown, a composite guide inner member applied to an electric bag filter, which includes a housing 1, a variable opening ratio distribution plate 2 installed in the housing 1, a louver-type guide plate 3, and a scrolling shaft 4 And the slot 5 on the lower part of the housing 1.

[0043] The section of the shell 1 is a rectangular tube. According to the relationship between the height of the bag and the height of the section of the dust collector box, the shell is divided into upper and lower parts. The upper part is installed with a scrolling shaft 4, and the installation height is generally 2 / 3 from top to bottom in the longitudinal direction. (about 200mm longer than the cloth bag), the lower part is provided with a slot 5, and the housing 1 is installed as a whole at the junction of the electrostatic precipitator area and the bag filter area. The installation location and method belong to the prior art and will not be repeated here. ...

Embodiment 2

[0047] The position of each part of the diversion internal member remains unchanged, the upper and lower distances between the upper and lower louver-shaped distribution plates adjacent to the central axis of the blades are twice the height of the blades, and the lower part of the distribution plate with variable opening ratio is arranged staggeredly in the center of each row of openings, divided into three stages. Holes, the shape of the opening is diamond, the opening ratio is large at the top and small at the bottom, respectively 60%, 40%, and 20%, and the blade inclination angle is initially set at 50°. According to the numerical simulation, the relative root mean square value of the front section of the bag is σ=0.09, which is significantly smaller than the relative root mean square value of 0.49 without the diversion inner member.

Embodiment 3

[0049] The position of each part of the diversion internal member remains unchanged. The upper and lower distances between the central axes of the adjacent blades of the upper louver-type distribution plate are 3 times the height of the blades. The porosity is large at the top and small at the bottom, respectively 60%, 50%, and 40%. The shape of the opening is square, and the blade inclination angle is initially set at 70°. After numerical simulation, the relative root mean square value of the front section of the bag is σ=0.21, which belongs to the qualified range.

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Abstract

The invention relates to a composite diversion inner component applied to an electric bag dust collector. The composite diversion inner component comprises a shell which is internally provided with an upper part and a lower part, wherein a shutter type guide plate is arranged at the upper half part, and multiple stages of variable-aperture-ratio distribution plates are arranged at the lower half part; the aperture ratios of all the stages of variable-aperture-ratio distribution plates are gradually reduced from top to bottom. The air flow between the whole composite diversion inner component and an electric bag can be well guided, so that the situation that the dust collection efficiency is influenced by the air flow which flows back into an electric dust collection area is prevented, and the resistance between the electric dust collection area and a bag dust collection area caused by an air flow distribution device can be greatly reduced. After the composite diversion inner component is used, the whole dust collection efficiency of the electric bag dust collector is improved, and the service life of a filter bag is prolonged.

Description

technical field [0001] The invention relates to the field of dust removal technology, in particular to an electric bag combined with dust removal equipment, and in particular to a composite flow-guiding inner member applied to an electric bag dust collector. Background technique [0002] The electric bag composite dust collector is a new type of dust removal device, which combines the advantages of the electric dust collector and the bag dust collector. It has reliability, small footprint, low investment and maintenance costs, and is not affected by the dust specific resistance. With the characteristics of small resistance and high classification dust removal efficiency, it has become a high-efficiency dust collector with good application prospects, and has been more and more used in the dust collector transformation of coal-fired boilers. However, new problems arise during operation, such as the selection of the joint part of the electric bag, the airflow distribution in th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D50/00
Inventor 朱廷钰王雪张晓曦
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI