Flexible net dust collection device, dust removal system and dust removal method

A technology of dust collection device and dust removal system, which is applied in chemical instruments and methods, electrode cleaning, electrostatic effect separation, etc., can solve the problems of difficult site layout and reconstruction investment, large gap between ultra-low emission indicators, and excessive emission concentration at the outlet. The effect of reducing equipment emission reduction and renovation investment, reducing electrostatic adhesion, and reducing rapping intensity

Active Publication Date: 2020-06-26
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the leading electrostatic precipitator equipment, in the process of capturing dry flue gas fine particles, has vibration and dust removal, secondary back-mixing and reverse corona seriously cause the outlet emission concentration to exceed the standard, and due to the decline in actual operating efficiency, the flue gas emission concentration is mostly at 20 ~50mg / Nm 3 , distance3 There is a large gap in ultra-low emission indicators, and we are forced to choose to increase multi-electric fields or replace bag filters to achieve governance goals. However, there are problems such as insufficient resistance margin of the current system, tight space and difficult layout, and high investment pressure for renovation.

Method used

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  • Flexible net dust collection device, dust removal system and dust removal method
  • Flexible net dust collection device, dust removal system and dust removal method
  • Flexible net dust collection device, dust removal system and dust removal method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] Such as figure 2 As shown, a single flexible net dust collector unit 2 is composed of an upper hanging box 14, a hollow rake-shaped jaw structure 16, a flexible net dust collector pole 18, a lower hanging box 19, and an end cover 23.

[0068] Such as Figure 4 with Figure 5 As shown, the upper hanging box 14 and the lower hanging box 19 are thin-walled profiles made of corrosion-resistant FRP through the pultrusion process. The resin and materials are adjusted according to the temperature of the treated smoke. The wall thickness is 3 mm and the length is 400 mm. ;The upper parts of the upper and lower hollow hanging boxes are square cavities, and the upper end of the upper hanging box has vertical ribs and two square holes. The bottom plates of the square cavities are arrayed at a distance of 30mm The water distribution hole 15 of the square chamber is provided with a water inlet pipe joint 24, and one end of the square chamber is closed by a sealing plate with a w...

Embodiment 2

[0073] Such as figure 1 As shown, the working system of the flexible net dust collector consists of an electric dust collector 1, a flexible net dust collector 2, a main pipe 3, an electric valve 5, a circulating pump 9, a circulating water tank 7, a booster pump 6, a sewage tank 10, a horizontal screw It is composed of centrifuge 8 and other main equipment, and the overall connection relationship is as follows: one end of the electrostatic precipitator 1 is the flue gas inlet, and the opposite end is the flue gas outlet, and the bottom of the electrostatic precipitator 1 is a plurality of Connected ash hoppers, wherein the ash hopper at the lower part of the final electric field where the flexible net dust collection device 2 is located is pre-corrosion-treated to become a wet ash hopper 11, and the remaining ash hoppers remain in their original state and are still dry ash hoppers 12; the lower part of the wet ash hopper 11 is treated with sewage After the muddy water in the ...

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Abstract

The invention discloses a flexible net dust collection device, a dust removal system and a dust removal method. The flexible net dust collection device comprises a flexible net dust collection electrode which is a plane fabric formed by the weaving of corrosion-resistant flexible fibers; an upper hanging box which comprises a clamping structure and a water distribution structure, wherein the clamping structure is arranged below the water distribution structure and is connected with the edge at one side of the flexible net dust collection electrode, and the water distribution structure is usedfor uniformly distributing water to the edge at the side where the flexible net dust collection electrode is located; and a lower hanging box which is clamped with the edge at the other side of the flexible net dust collection electrode and is arranged opposite to the upper hanging box. The fly ash layers deposited on the surfaces of the flexible net and other anhydrous film scattered parts are sequentially removed in a water film scouring mode and fall into an ash bucket, it is guaranteed that the ash removal is thorough, the secondary flying is avoided, and the problem that according to an existing dust removal device, the emission concentration of dust in smoke is high due to the secondary back mixing and back corona can be effectively solved, the clear water is circulated after ash-water separation, and the sludge can be recycled.

Description

technical field [0001] The invention belongs to the field of air pollutant control, and in particular relates to a flexible net dust collection device, a dust removal system and a dust removal method. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] Fine particulate matter emissions are the main cause of continuous large-scale atmospheric smog in my country. The analysis of emission reduction scenarios of key industries of air pollutants released by "China Environmental Science" shows that: electricity has a significant impact on SO 2 and NO X The main contribution to the emission reduction of metal smelting and rolling industry is the largest contribution to the emissio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03C3/017B03C3/78
CPCB03C3/017B03C3/78
Inventor 常景彩马春元
Owner SHANDONG UNIV
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