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Dust collection polar plate based on particle trap effect, novel polarity form and efficient electrostatic dust collector

A technology of electrostatic precipitator and dust collecting plate, which is applied in the field of electrostatic precipitator and environmental protection, can solve the problems of weakening electrode discharge characteristics and anti-corona, so as to reduce the decline of collection efficiency, reduce the drag force, and suppress the anti-corona effect. Effect

Pending Publication Date: 2020-03-13
ZHEJIANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problems existing in the existing electrostatic precipitator, and propose a method that can broaden the application range of specific resistance, increase the corona current, strengthen the charging of fine particles, reduce the secondary dust generated during air entrainment and rapping, and can The particle trap effect-based dust collection plate and high-efficiency electrostatic precipitator solve the problem of weakened electrode discharge characteristics and even back corona caused by the accumulation of dust layers

Method used

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  • Dust collection polar plate based on particle trap effect, novel polarity form and efficient electrostatic dust collector
  • Dust collection polar plate based on particle trap effect, novel polarity form and efficient electrostatic dust collector
  • Dust collection polar plate based on particle trap effect, novel polarity form and efficient electrostatic dust collector

Examples

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Effect test

Embodiment 1

[0071] combined with figure 1 As shown, this embodiment relates to a dust collection plate 1 based on the particle trap effect, the dust collection plate 1 forms a plurality of raised folded plates 4 and grooves 5 arranged at intervals by bending, and the grooves 5 Particle traps are formed. The cross section of the groove 5 is an isosceles trapezoid, the width of the upper bottom surface of the cross section is 3-11cm, the width of the lower bottom surface is 2-6cm, the depth of the groove 5 is 1-5cm, and the angle between the two waists of the groove 5 and the bottom surface of the groove 5 is 100-135°. The dust-collecting pole plate 1 is also provided with reinforced folded plates 3 , and the strengthened folded plates 3 are arranged at both ends of the dust-collected pole plate 1 .

Embodiment 2

[0073] combined with figure 2 As shown, a new pole matching form involved in this embodiment includes two dust collecting pole plates 1 and several multi-angle double-thorn electrodes 6, the dust collecting pole plates 1 are arranged at intervals, and the dust collecting pole plates 1 pass through The bending method forms a plurality of raised folded plates 4 and grooves 5 arranged at intervals, and a particle trap is formed at the groove 5. The cross section of the groove 5 is an isosceles trapezoid, and the width of the upper bottom of the cross section is 3 to 11 cm. The width is 2-6 cm, the depth of the groove 5 is 1-5 cm, and the angle between the two waists of the groove 5 and the bottom surface of the groove 5 is 100-135°. The dust-collecting pole plate 1 is also provided with a strengthened folded plate 3, and the strengthened folded plate 3 is arranged at both ends of the dust-collected pole plate 1; , the distance between the multi-angle double-thorn electrode 6 an...

Embodiment 3

[0075] Based on a generator set with a capacity of 1000MW in a power plant, the particle size range of the measured flue gas particles is 0.01-0.1μm, and the maximum stable ash concentration of the dust removal device is set to 30g / m 3 , specific resistance ρ of particles r =2×10 12 Ω·cm, for low specific resistance particles, using dry electrostatic precipitator to achieve efficient removal of fine particles.

[0076] combined with Figure 4 As shown, it is the electric field layout and rapping control structure diagram of the high-efficiency electrostatic precipitator with the particle trap dust collection plate in Example 3, wherein the dust collection plate 1 with the particle trap is only arranged on the high-efficiency electrostatic precipitator The fourth electric field is the final electric field.

[0077] combined with Figure 4 As shown, the high-efficiency electrostatic precipitator involved in this embodiment includes four sets of dust-collecting pole plates 1,...

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Abstract

The invention relates to a dust collection polar plate based on a particle trap effect, a novel polarity form and an efficient electrostatic dust collector. The dust collection polar plate is bent toform a plurality of convex folded plates and grooves, particle traps are formed at the grooves, a novel polarity form of matching the dust collection polar plate with the multi-angle double-thorn electrode is low in dust accumulation thickness and high in field intensity at the convex parts of the particle traps, and particles at the convex parts easily enter the traps under the action of airflowdrag force or rapping. The thickness of accumulated dust in the grooves is large, but the field intensity in a formed dust layer is low, inter-particle breakdown and interference to discharge are prevented, the operating voltage working interval is increased, and the electrostatic dust collector is formed in cooperation with an intelligent rapping system. According to the invention, reentrainmentdust is reduced, the effective field intensity loss of high-specific-resistance fly ash is reduced, and the specific resistance application range and the working temperature window of the electric precipitator are widened. The dust collection polar plate has the advantages of improving corona current, strengthening fine particle charge, improving dust removal efficiency and the like, can reduce operation cost, and has high industrial applicability and operation reliability.

Description

technical field [0001] The invention relates to the field of electrostatic precipitator environmental protection technology, in particular to a dust collection plate based on particle trap effect, a new pole matching form and a high-efficiency electrostatic precipitator. Background technique [0002] The electrostatic precipitator is a kind of dust removal equipment that uses electricity to separate the dust particles in the gas. It is widely used in blast furnace tail gas dust removal in various industries. It has the advantages of less energy consumption, low resistance, high dust removal efficiency and large amount of flue gas treatment Etc. A traditional electrostatic precipitator such as the patent No. CN 103357504 B discloses an electrostatic precipitator, which includes a positive plate and a negative plate, there is a distance between the positive plate and the negative plate, and the positive plate is provided with a plurality of through holes to A plurality of tub...

Claims

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Application Information

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IPC IPC(8): B03C3/47B03C3/43B03C3/76
CPCB03C3/47B03C3/43B03C3/763B03C2201/06
Inventor 高翔郑成航吴卫红伍致承周灿张涌新刘少俊翁卫国张悠
Owner ZHEJIANG UNIV
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