Special-shaped polar plate electrostatic ultralow emission device

Abstract

The invention provides a special-shaped polar plate electrostatic ultra-low emission device, and relates to the technical field of electric precipitators, and the special-shaped polar plate electrostatic ultra-low emission device comprises a shell, a dust removal chamber is defined in the shell, and the dust removal chamber is provided with a flue gas inlet and a flue gas outlet; the anode plates are symmetrically arranged on the left and right sides of the dust chamber; one end of the turbulent flow structure is fixedly arranged on the anode plate, and the other end of the turbulent flow structure respectively extends towards the flue gas inlet and the flue gas outlet to form a turbulent flow surface which is bent inwards; and the cathode wire is arranged in the dust removal chamber and corresponds to the turbulent flow surface. The turbulent flow structure is arranged on the basis of an original anode plate, the turbulent flow structure is Y-shaped, when flue gas flows through the turbulent flow structure, the turbulent flow structure can generate turbulent flow and enhance turbulent flow coagulation of fine particles, and the turbulent flow structure is used for intercepting the fine particles and inhibiting back corona and reentrainment of dust, so that the dust removal efficiency of the electric dust remover is improved, and the ultra-low emission standard is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of electrostatic precipitators, and in particular to an ultra-low electrostatic emission device with a special-shaped electrode plate. Background Art

[0002] Electrostatic precipitator is a highly efficient dust removal equipment, widely used in electricity, steel, cement, chemical and other industries to remove particulate matter and harmful gases in industrial flue gas.

[0003] At present, the particulate matter in industrial flue gas is generally required to achieve ultra-low emissions, that is, the particulate matter emission concentration must reach 10mg / m 3 The particle concentration of existing four-field and five-field electrostatic precipitators is mostly 20-30 mg / m 3 After adding high voltage pulse power supply, it can be lower than 15mg / m 3 , but it is still difficult to achieve ultra-low emission standards. This is because PM in flue gas 2.5 The particle size and mass are small, the flue gas conformability is good, and it is difficult to be charged, so it is not easy to remove in the electrostatic precipitator; at the same time, after the dust accumulates on the surface of the anode plate of the electrostatic precipitator, it is easy to produce back corona and secondary dust.

[0004] In view of this, how to provide an electrostatic precipitator that can suppress back corona and secondary dust and meet ultra-low emission standards is an urgent problem that needs to be solved by technical personnel in this field. Summary of the invention

[0005] The purpose of the present invention is to provide a special-shaped plate electrostatic ultra-low emission device to solve the problems existing in the prior art.

[0006] To achieve the above object, the present invention provides a special-shaped plate electrostatic ultra-low emission device, comprising:

[0007] A shell body defines a dust removal chamber inside, wherein the dust removal chamber has a smoke inlet and a smoke outlet;

[0008] Anode plates are symmetrically arranged on the left and right sides of the dust removal chamber;

[0009] A spoiler structure, one end of which is fixedly arranged on the anode plate, and the other end of which extends toward the smoke inlet and the smoke outlet to form a spoiler surface bent inwardly;

[0010] The cathode line is arranged in the dust removal chamber and corresponds to the spoiler surface.

[0011] Furthermore, the spoiler structure includes:

[0012] A connecting portion, one end of which is fixedly connected to the anode plate;

[0013] The first spoiler and the second spoiler are fixed to the other end of the connecting portion and extend toward the smoke inlet and the smoke outlet respectively, and the outer surfaces of the first spoiler and the second spoiler constitute a spoiler surface.

[0014] Furthermore, the width between the anode plates on the left and right sides of the dust removal chamber is D, the lateral width of the spoiler structure is L, L = 0.1D ~ 0.2D; the angle between the first spoiler and the direction of the flue gas inlet is 15-60°, and the angle between the second spoiler and the direction of the flue gas inlet is 120-165°.

[0015] Furthermore, the first spoiler and the second spoiler are straight or arc-shaped.

[0016] Furthermore, the spoiler structure is arranged on the anode plates on the left and right sides of the dust removal chamber or on the anode plate on one side.

[0017] Furthermore, it also includes a vibration and cleaning unit, which is arranged in the dust removal chamber and is used to vibrate the anode plate and / or the spoiler structure. The bottom of the dust removal chamber is provided with an ash hopper for collecting dust shaken off by the vibration and cleaning unit.

[0018] The present invention discloses the following technical effects:

[0019] A spoiler structure is set on the basis of the original anode plate. The spoiler structure is Y-shaped. When the flue gas flows through the spoiler structure, the spoiler structure can generate turbulence, enhance the turbulent coagulation of fine particles, and use the spoiler structure to intercept fine particles, suppress back corona and secondary dust, thereby improving the dust removal efficiency of the electrostatic precipitator and meeting the ultra-low emission standards. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a schematic diagram of the structure of the present invention;

[0022] Figure 2 It is a top view of Example 1;

[0023] Figure 3 It is a top view of Example 2;

[0024] Figure 4 It is a top view of Example 3;

[0025] Among them, 1. flue gas inlet; 2. shell; 3. cathode wire; 4. anode plate; 5. ash hopper; 6. flue gas outlet; 7. vibration and cleaning unit; 8. spoiler structure. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] Example 1

[0029] The embodiment of the present invention provides a special-shaped plate electrostatic ultra-low emission device, comprising: a housing 2, a dust removal chamber is defined inside, the dust removal chamber has a smoke inlet 1 and a smoke outlet 6, the smoke inlet 1 and the smoke outlet 6 are generally located at the front and rear sides of the dust removal chamber and the positions are corresponding; four groups of electric fields are arranged in the dust removal chamber, and the electric field is composed of anode plates 4 and cathode wires 3. The anode plates 4 are symmetrically arranged on the left and right sides of the dust removal chamber; the spoiler structure 8 is arranged on the anode plates 4 on the left and right sides of the dust removal chamber, one end of which is fixedly arranged on the anode plate 4, and the other end extends in the direction of the smoke inlet 1 and the smoke outlet 6 to form an inwardly bent spoiler surface; the cathode wire 3 is arranged in the dust removal chamber and corresponds to the spoiler surface.

[0030] In this embodiment, the spoiler structure 8 is Y-shaped, including a connecting portion, a first spoiler portion and a second spoiler portion, one end of the connecting portion is fixedly connected to the anode plate 4; the first spoiler portion and the second spoiler portion are fixed to the other end of the connecting portion and extend toward the smoke inlet 1 and the smoke outlet 6 respectively, and the outer surfaces of the first spoiler portion and the second spoiler portion constitute a spoiler surface.

[0031] In this embodiment, the width between the anode plates 4 on the left and right sides of the dust removal chamber is D, the lateral width of the spoiler structure 8 is L, L = 0.1D; the angle α between the first spoiler and the direction of the flue gas inlet 1 is 15°, the second spoiler is symmetrically arranged with the first spoiler, and the first spoiler and the second spoiler are straight structures.

[0032] After testing, when the inlet concentration of flue gas particles is 3g / m 3 When the average flow rate of flue gas in the electric field is 0.8m / s, the outlet particle concentration is 8mg / m 3 , the total particle removal efficiency is about 99.73%.

[0033] Example 2

[0034] The difference between this embodiment and embodiment 1 is that five groups of electric fields are provided, and the spoiler structure 8 is provided on the anode plate 4 on the left side of the dust removal chamber. L=0.2D, α is 60°.

[0035] After testing, the inlet concentration of flue gas particles is 4g / m 3 When the average flow rate of flue gas in the electric field is 0.7m / s, the outlet particle concentration is 9mg / m 3 , the total particle removal efficiency is about 99.78%.

[0036] Example 3

[0037] The difference between this embodiment and embodiment 1 is that five groups of electric fields are provided. L=0.2D, α is 45°. The first spoiler and the second spoiler are arc-shaped structures.

[0038] After testing, the inlet concentration of flue gas particles is 6g / m 3 When the average flow rate of flue gas in the electric field is 0.6 m / s, the outlet particle concentration is 4 mg / m 3 , the total particle removal efficiency is about 99.93%.

[0039] Example 4

[0040] The present embodiment differs from the first embodiment in that it further comprises a vibration and cleaning unit 7 which is arranged in the dust removal chamber and is used to vibrate the anode plate 4 and / or the spoiler structure 8 , and an ash hopper 5 is arranged at the bottom of the dust removal chamber and is used to collect dust shaken off by the vibration and cleaning unit 7 .

[0041] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0042] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A special-shaped plate electrostatic ultra-low emission device, characterized in that: include: A shell (2) defines a dust removal chamber inside, wherein the dust removal chamber has a smoke inlet (1) and a smoke outlet (6); Anode plates (4) are symmetrically arranged on the left and right sides of the dust removal chamber; A spoiler structure (8), one end of which is fixedly arranged on the anode plate (4), and the other end of which extends towards the smoke inlet (1) and the smoke outlet (6) to form a spoiler surface bent inwardly; The cathode line (3) is arranged in the dust removal chamber and corresponds to the turbulent surface.

2. The device for ultra-low static electricity emission of special-shaped plates according to claim 1, characterized in that: The spoiler structure (8) comprises: A connecting portion, one end of which is fixedly connected to the anode plate (4); The first spoiler and the second spoiler are fixed to the other end of the connecting portion and extend towards the smoke inlet (1) and the smoke outlet (6) respectively, and the outer surfaces of the first spoiler and the second spoiler form a spoiler surface.

3. The ultra-low static emission device for special-shaped plates according to claim 2, characterized in that: The width between the anode plates (4) on the left and right sides of the dust removal chamber is D, the transverse width of the spoiler structure (8) is L, and L=0.1D~0.2D; the angle between the first spoiler and the direction of the smoke inlet (1) is 15-60°, and the angle between the second spoiler and the direction of the smoke inlet (1) is 120-165°.

4. The device for ultra-low static electricity emission of special-shaped plates according to claim 3, characterized in that: The first spoiler and the second spoiler are straight or arc-shaped.

5. The ultra-low static emission device for special-shaped plates according to claim 1, characterized in that: The spoiler structure (8) is arranged on the anode plates (4) on the left and right sides of the dust removal chamber or on the anode plate (4) on one side.

6. The ultra-low static emission device for special-shaped plates according to claim 1, characterized in that: It also includes a vibrating and cleaning unit (7) which is arranged in the dust removal chamber and is used to vibrate the anode plate (4) and / or the spoiler structure (8). An ash hopper (5) is arranged at the bottom of the dust removal chamber and is used to collect dust shaken off by the vibrating and cleaning unit (7).

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