Dust remover capable of removing mercury synergistically

Abstract

The dust remover comprises a shell, a pattern plate is horizontally fixed in the shell, the upper part of the pattern plate is a dust removal area, and the lower part of the pattern plate is a dust hopper; a discharge electrode row connected with a negative high-voltage power supply is horizontally fixed in the ash bucket; an air inlet is formed in the side wall of the ash bucket and positioned below the discharge electrode row; a filtering assembly communicated with the ash hopper is longitudinally arranged in the dust removal area, the surface of the filtering assembly is coated with a mercury removal catalyst, and an air outlet is formed in the top of the dust removal area. The negative high-voltage discharge electrode row is arranged on the lower portion of the pattern plate, the pattern plate serves as a fixing and positioning device at the bottom of the filter assembly and also serves as a grounding electrode of the discharge electrode row, an electric field is formed by the pattern plate and the discharge electrode row, and corona discharge is carried out, so that dust entering from an air inlet is charged firstly and then enters the filter assembly to be captured; a dust layer formed on the inner surface of the filter component is relatively fluffy, so that the filter resistance is small, the service cycle is long and the dust removal performance is high.

Description

Technical Field

[0001] The utility model relates to the technical field of industrial flue gas purification, in particular to a dust collector capable of collaboratively removing mercury. Background Art

[0002] Industrial dust removal mainly includes electrostatic precipitators, bag dust collectors, electric bag composite dust collectors or wet dust collectors, but the electrostatic precipitator has low efficiency in capturing fine particulate matter, and the bag dust collector has problems such as large filtration resistance, short filtration cycle, easy damage to filter bags, and high operation and maintenance costs. The electric bag composite dust collector uses one or two pre-stage electric fields for electrostatic precipitation and then bag dust removal, but the construction cost of the pre-stage electric field is high, and the airflow direction between the electric zone and the bag zone is perpendicular, making it difficult to achieve good regulation. In addition, the pre-stage electric field produces a certain amount of ozone gas, which has an adverse effect on the service life of the filter bag and also affects the ambient air quality after escape.

[0003] Furthermore, mercury in flue gas occurs in various forms, including particulate, zerovalent, and divalent mercury. Particulate mercury adheres to dust and is removed during dust removal. Divalent mercury is readily soluble in water and can be directly dissolved into the desulfurization absorbent in wet desulfurization towers for removal. However, zerovalent mercury vapor, which primarily accounts for flue gas mercury, is insoluble in water and cannot be removed by existing denitrification-dust removal-desulfurization systems. Chinese utility model patent publication number CN217188737U discloses an injection system for reducing dioxins and mercury in incineration flue gas. This system removes dioxins and mercury by injecting activated carbon into the flue, but the purification cost is prohibitive for polluting companies. Later, some scholars developed a demercuration catalyst and integrated it with a selective catalytic reduction (SCR) flue gas denitrification catalyst. This method catalytically oxidizes zero-valent mercury into divalent mercury, which is then removed through wet desulfurization. However, this method, when integrated with SCR denitrification, usually directly deals with the original flue gas discharged directly from the boiler. Without dust removal, a large amount of dust will cause various adverse effects on the denitrification and demercuration catalysts, such as blockage, passivation, and poisoning, significantly affecting the demercuration performance. Utility Model Content

[0004] The utility model aims to provide a dust collector capable of collaborative mercury removal, which can economically and efficiently remove dust from flue gas and convert difficult-to-treat zero-valent mercury vapor in the flue gas into divalent mercury.

[0005] The technical solution adopted by the utility model is a dust collector capable of collaborative mercury removal, comprising a shell, a flower plate fixed horizontally in the shell, the upper part of the flower plate being a dust removal area, and the lower part being an ash hopper;

[0006] A discharge electrode row connected to a negative high-voltage power supply is fixed horizontally in the ash hopper, and an air inlet is provided on the side wall of the ash hopper below the discharge electrode row;

[0007] A filter assembly connected to the ash hopper is longitudinally arranged in the dust removal area. The surface of the filter assembly is coated with a mercury removal catalyst. An air outlet is opened on the top of the dust removal area.

[0008] The utility model is also characterized in that:

[0009] A back-blowing air inlet is also provided on the top of the dust removal area.

[0010] The discharge electrode row is composed of several barbed wires arranged side by side.

[0011] The distance between two adjacent thorn lines is 250-350mm.

[0012] The thorn line uses eight-tooth thorn line.

[0013] The distance between the discharge electrode row and the flower plate is 300-400mm.

[0014] The filter components are evenly arranged filter bags, filter membranes or ceramic filter tubes.

[0015] The ash hopper is conical.

[0016] The beneficial effects of the utility model are:

[0017] 1. This utility model installs a negative high-voltage discharge electrode row under the flower plate. While serving as a fixed positioning device at the bottom of the filter assembly, the flower plate also becomes the grounding electrode of the discharge electrode row. Together with the discharge electrode row, an electric field is formed to perform corona discharge, so that the dust entering from the air inlet is first charged before entering the filter assembly and being captured. Due to the pre-charged dust and the principle of like charges repelling each other, the dust layer formed on the inner surface of the filter assembly is relatively fluffy, resulting in low filtration resistance, a long filtration cycle, easy shedding during cleaning, good cleaning effect, and high dust removal performance. The compressed air pressure used for cleaning is also low, which does not damage the filter bags, and the filter bags have a long service life and low operating and maintenance costs.

[0018] 2. This new design incorporates a discharge electrode array that, together with the flower plate, forms only half a discharge unit equivalent to the pre-stage electric field of an electric bag composite dust collector. This structure generates negligible ozone compared to traditional electric bag composite dust collectors, effectively eliminating the risk of ozone oxidative damage to the filter bags during the pre-charging process and fundamentally resolving the threat posed by ozone to filter bag safety.

[0019] 3. The present invention employs an internal filtration dust collector coated with a mercury removal catalyst on the outer surface of the filter assembly. After flue gas enters the dust collector, it is first charged and then dusted. Dust is trapped on the inner surface of the filter assembly. After dust removal, the flue gas passes through the filter assembly, where zero-valent mercury vapor is catalytically oxidized to divalent mercury on the outer surface of the filter material, making it easier to remove in the subsequent flue gas desulfurization absorption tower. This oxidative mercury removal is performed after dust removal, eliminating the adverse effects of dust and ensuring the safety of the catalyst and efficient oxidative mercury removal.

[0020] Furthermore, the utility model opens a back-blowing air inlet in the dust removal area and adopts reverse airflow for dust cleaning. After the dust cleaning is completed, the back-blowing air is continuously introduced for a period of time. The back-blown air is blown directly onto the discharge electrode array through the filter assembly, which is equivalent to cleaning the discharge wire, thereby continuously keeping the discharge wire smooth, ensuring subsequent efficient corona discharge, and also ensuring its long-term safe use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the utility model;

[0022] In the figure: 1. Shell, 2. Ash hopper, 3. Air inlet, 4. Air outlet, 5. Back-blowing air inlet, 6. Filter assembly, 7. Flower plate, 8. Fixed hanging device, 9. Discharge electrode row, 10. Negative high-voltage power supply. DETAILED DESCRIPTION

[0023] The present invention will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0024] Example 1

[0025] like Figure 1 As shown, a dust collector capable of collaborative mercury removal comprises a shell 1, in which a flower plate 7 is horizontally fixed. The flower plate 7 divides the shell 1 into two cavities, the upper part being a dust removal area and the lower part being an ash hopper 2.

[0026] Discharge electrodes 9 are arranged horizontally within the ash hopper 2, parallel to the panel 7. Discharge electrodes 9 are connected to a negative high-voltage power supply 10 via a high-voltage cable. An air inlet 3 is provided on the sidewall of the ash hopper 2, located below the discharge electrodes 9. During operation, the panel 7 is grounded, and the discharge electrodes 9 are connected to the negative high-voltage power supply 10, forming a precharge zone between the discharge electrodes 9 and the panel 7. Flue gas enters the dust collector through the air inlet 3, and after passing through the precharge zone, the dust particles in the flue gas carry a negative charge.

[0027] Several filter assemblies 6 are arranged in the dust removal area, perpendicular to the flower plate 7. One end of the filter assemblies 6 is closed, and the other end is connected to the ash hopper 2. The surfaces of the filter assemblies 6 are coated with a mercury removal catalyst. During operation, negatively charged smoke dust from the pre-charged area enters the filter assemblies 6, where it is intercepted on the inner surface. Meanwhile, particulate mercury in the flue gas adheres to the dust and is removed during dust removal. Zero-valent mercury vapor in the flue gas is oxidized to divalent mercury by the mercury removal catalyst, which is then absorbed and removed in the wet desulfurization tower after dust removal.

[0028] Example 2

[0029] like Figure 1As shown, a dust collector capable of collaborative mercury removal comprises a shell 1, in which a flower plate 7 is horizontally fixed. The flower plate 7 divides the shell 1 into two cavities, the upper part being a dust removal area and the lower part being an ash hopper 2.

[0030] Discharge electrodes 9 are arranged horizontally within the ash hopper 2, parallel to the panel 7. Discharge electrodes 9 are connected to a negative high-voltage power supply 10 via a high-voltage cable. An air inlet 3 is provided on the sidewall of the ash hopper 2, located below the discharge electrodes 9. During operation, the panel 7 is grounded, and the discharge electrodes 9 are connected to the negative high-voltage power supply 10, forming a precharge zone between the discharge electrodes 9 and the panel 7. Flue gas enters the dust collector through the air inlet 3, and after passing through the precharge zone, the dust particles in the flue gas carry a negative charge.

[0031] Several filter assemblies 6 are arranged in the dust removal area, perpendicular to the flower plate 7. One end of the filter assemblies 6 is closed, and the other end is connected to the ash hopper 2. The surfaces of the filter assemblies 6 are coated with a mercury removal catalyst. During operation, negatively charged smoke dust from the pre-charged area enters the filter assemblies 6, where it is intercepted on the inner surface. Meanwhile, particulate mercury in the flue gas adheres to the dust and is removed during dust removal. Zero-valent mercury vapor in the flue gas is oxidized to divalent mercury by the mercury removal catalyst, which is then absorbed and removed in the wet desulfurization tower after dust removal.

[0032] A back-blowing air inlet 5 is also provided at the top of the dust removal area. When in use, when the amount of dust deposited on the inner surface of the filter component 6 reaches a certain thickness, the flue gas intake is stopped, and compressed air is then fed into the dust removal area from the back-blowing air inlet 5. The compressed air flow penetrates into the component from the outer surface of the filter component 6, blowing the dust deposited on its inner surface down into the ash hopper 2, and the compressed air is discharged from the air inlet 3.

[0033] Example 3

[0034] like Figure 1 As shown, a dust collector capable of collaborative mercury removal comprises a shell 1, in which a flower plate 7 is horizontally fixed. The flower plate 7 divides the shell 1 into two cavities, the upper part being a dust removal area and the lower part being an ash hopper 2.

[0035] Discharge electrodes 9 are arranged horizontally within the ash hopper 2, parallel to the panel 7. Discharge electrodes 9 are connected to a negative high-voltage power supply 10 via a high-voltage cable. An air inlet 3 is provided on the sidewall of the ash hopper 2, located below the discharge electrodes 9. During operation, the panel 7 is grounded, and the discharge electrodes 9 are connected to the negative high-voltage power supply 10, forming a precharge zone between the discharge electrodes 9 and the panel 7. Flue gas enters the dust collector through the air inlet 3, and after passing through the precharge zone, the dust particles in the flue gas carry a negative charge.

[0036] The discharge electrode array 9 is composed of several barbed wires connected side by side. The barbed wires are eight-tooth barbed wires, and the distance between two adjacent barbed wires is 250-350mm. This is to achieve as many point discharges as possible and ensure the corona strength in the pre-charge area.

[0037] Several filter assemblies 6 are arranged in the dust removal area, perpendicular to the flower plate 7. One end of the filter assemblies 6 is closed, and the other end is connected to the ash hopper 2. The surfaces of the filter assemblies 6 are coated with a mercury removal catalyst. During operation, negatively charged smoke dust from the pre-charged area enters the filter assemblies 6, where it is intercepted on the inner surface. Meanwhile, particulate mercury in the flue gas adheres to the dust and is removed during dust removal. Zero-valent mercury vapor in the flue gas is oxidized to divalent mercury by the mercury removal catalyst, which is then absorbed and removed in the wet desulfurization tower after dust removal.

[0038] A back-blowing air inlet 5 is also provided at the top of the dust removal area. When in use, when the amount of dust deposited on the inner surface of the filter component 6 reaches a certain thickness, the flue gas intake is stopped, and compressed air is then fed into the dust removal area from the back-blowing air inlet 5. The compressed air flow penetrates into the component from the outer surface of the filter component 6, blowing the dust deposited on its inner surface down into the ash hopper 2, and the compressed air is discharged from the air inlet 3.

[0039] Example 4

[0040] like Figure 1 As shown, a dust collector capable of collaborative mercury removal comprises a shell 1, in which a flower plate 7 is horizontally fixed. The flower plate 7 divides the shell 1 into two cavities, the upper part being a dust removal area and the lower part being an ash hopper 2.

[0041] Discharge electrodes 9 are arranged horizontally within the ash hopper 2, parallel to the panel 7. Discharge electrodes 9 are connected to a negative high-voltage power supply 10 via a high-voltage cable. An air inlet 3 is provided on the sidewall of the ash hopper 2, located below the discharge electrodes 9. During operation, the panel 7 is grounded, and the discharge electrodes 9 are connected to the negative high-voltage power supply 10, forming a precharge zone between the discharge electrodes 9 and the panel 7. Flue gas enters the dust collector through the air inlet 3, and after passing through the precharge zone, the dust particles in the flue gas carry a negative charge.

[0042] The discharge electrode array 9 is composed of several parallel, eight-tooth barbed wires, with a spacing of 250-350 mm between adjacent wires. This maximizes discharge points and ensures corona strength within the precharge zone. In this embodiment, the spacing between the discharge electrode array 9 and the pattern plate 7 is 300-400 mm, ensuring a strong electric field and a good corona effect with a small inter-electrode spacing.

[0043] Several filter assemblies 6 are arranged in the dust removal area, perpendicular to the flower plate 7. One end of the filter assemblies 6 is closed, and the other end is connected to the ash hopper 2. The surfaces of the filter assemblies 6 are coated with a mercury removal catalyst. During operation, negatively charged smoke dust from the pre-charged area enters the filter assemblies 6, where it is intercepted on the inner surface. Meanwhile, particulate mercury in the flue gas adheres to the dust and is removed during dust removal. Zero-valent mercury vapor in the flue gas is oxidized to divalent mercury by the mercury removal catalyst, which is then absorbed and removed in the wet desulfurization tower after dust removal.

[0044] A back-blowing air inlet 5 is also provided at the top of the dust removal area. When in use, when the amount of dust deposited on the inner surface of the filter component 6 reaches a certain thickness, the flue gas intake is stopped, and compressed air is then fed into the dust removal area from the back-blowing air inlet 5. The compressed air flow penetrates into the component from the outer surface of the filter component 6, blowing the dust deposited on its inner surface down into the ash hopper 2, and the compressed air is discharged from the air inlet 3.

[0045] Example 5

[0046] like Figure 1 As shown, a dust collector capable of collaborative mercury removal comprises a shell 1, in which a flower plate 7 is horizontally fixed. The flower plate 7 divides the shell 1 into two cavities, the upper part being a dust removal area and the lower part being an ash hopper 2.

[0047] Discharge electrodes 9 are arranged horizontally within the ash hopper 2, parallel to the panel 7. Discharge electrodes 9 are connected to a negative high-voltage power supply 10 via a high-voltage cable. An air inlet 3 is provided on the sidewall of the ash hopper 2, located below the discharge electrodes 9. During operation, the panel 7 is grounded, and the discharge electrodes 9 are connected to the negative high-voltage power supply 10, forming a precharge zone between the discharge electrodes 9 and the panel 7. Flue gas enters the dust collector through the air inlet 3, and after passing through the precharge zone, the dust particles in the flue gas carry a negative charge.

[0048] The discharge electrode array 9 is composed of several parallel, eight-tooth barbed wires, with a spacing of 250-350 mm between adjacent wires. This maximizes discharge points and ensures corona strength within the precharge zone. In this embodiment, the spacing between the discharge electrode array 9 and the pattern plate 7 is 300-400 mm, ensuring a strong electric field and a good corona effect with a small inter-electrode spacing.

[0049] Several filter assemblies 6 are arranged in the dust removal area, perpendicular to the flower plate 7. One end of the filter assemblies 6 is closed, and the other end is connected to the ash hopper 2. The surfaces of the filter assemblies 6 are coated with a mercury removal catalyst. During operation, negatively charged smoke dust from the pre-charged area enters the filter assemblies 6, where it is intercepted on the inner surface. Meanwhile, particulate mercury in the flue gas adheres to the dust and is removed during dust removal. Zero-valent mercury vapor in the flue gas is oxidized to divalent mercury by the mercury removal catalyst, which is then absorbed and removed in the wet desulfurization tower after dust removal.

[0050] A back-blowing air inlet 5 is also provided at the top of the dust removal area. When in use, when the amount of dust deposited on the inner surface of the filter component 6 reaches a certain thickness, the flue gas intake is stopped, and compressed air is then fed into the dust removal area from the back-blowing air inlet 5. The compressed air flow penetrates into the component from the outer surface of the filter component 6, blowing the dust deposited on its inner surface down into the ash hopper 2, and the compressed air is discharged from the air inlet 3.

[0051] In this embodiment, the filter assembly 6 utilizes a filter membrane or filter bag, one end of which is open and the other closed. A plurality of through-holes are evenly distributed across the surface of the pattern plate 7, with a diameter equal to or smaller than the cross-sectional diameter of the open end of the filter membrane or filter bag. During use, the open edge of the filter membrane or filter bag is secured to the through-holes of the pattern plate 7. The closed end is positioned and secured to the top of the housing 1 via a mounting hanger 8, maintaining a vertical orientation to facilitate uniform entry of pre-charge zone flue gas into the filter membrane or filter bag.

[0052] Example 6

[0053] like Figure 1 As shown, a dust collector capable of collaborative mercury removal comprises a shell 1, in which a flower plate 7 is horizontally fixed. The flower plate 7 divides the shell 1 into two cavities, the upper part being a dust removal area and the lower part being an ash hopper 2.

[0054] Discharge electrodes 9 are arranged horizontally within the ash hopper 2, parallel to the panel 7. Discharge electrodes 9 are connected to a negative high-voltage power supply 10 via a high-voltage cable. An air inlet 3 is provided on the sidewall of the ash hopper 2, located below the discharge electrodes 9. During operation, the panel 7 is grounded, and the discharge electrodes 9 are connected to the negative high-voltage power supply 10, forming a precharge zone between the discharge electrodes 9 and the panel 7. Flue gas enters the dust collector through the air inlet 3, and after passing through the precharge zone, the dust particles in the flue gas carry a negative charge.

[0055] The discharge electrode array 9 is composed of several parallel, eight-tooth barbed wires, with a spacing of 250-350 mm between adjacent wires. This maximizes discharge points and ensures corona strength within the precharge zone. In this embodiment, the spacing between the discharge electrode array 9 and the pattern plate 7 is 300-400 mm, ensuring a strong electric field and a good corona effect with a small inter-electrode spacing.

[0056] Several filter assemblies 6 are arranged in the dust removal area, perpendicular to the flower plate 7. One end of the filter assemblies 6 is closed, and the other end is connected to the ash hopper 2. The surfaces of the filter assemblies 6 are coated with a mercury removal catalyst. During operation, negatively charged smoke dust from the pre-charged area enters the filter assemblies 6, where it is intercepted on the inner surface. Meanwhile, particulate mercury in the flue gas adheres to the dust and is removed during dust removal. Zero-valent mercury vapor in the flue gas is oxidized to divalent mercury by the mercury removal catalyst, which is then absorbed and removed in the wet desulfurization tower after dust removal.

[0057] A back-blowing air inlet 5 is also provided at the top of the dust removal area. When in use, when the amount of dust deposited on the inner surface of the filter component 6 reaches a certain thickness, the flue gas intake is stopped, and compressed air is then fed into the dust removal area from the back-blowing air inlet 5. The compressed air flow penetrates into the component from the outer surface of the filter component 6, blowing the dust deposited on its inner surface down into the ash hopper 2, and the compressed air is discharged from the air inlet 3.

[0058] In this embodiment, the filter assembly 6 utilizes a ceramic filter tube, one end of which is closed and the other open. The surface of the flower plate 7 is uniformly provided with a number of through-holes, each with a diameter equal to or smaller than the cross-sectional diameter of the open end of the ceramic filter tube. During use, the ceramic filter tube, with the same number of through-holes as the through-holes, is vertically fixed to the flower plate 7, with the open end covering the through-holes on the flower plate 7, ensuring uniform entry of flue gas into the ceramic filter tube.

[0059] The working mode of this utility model is:

[0060] After the discharge electrode row 9 is powered by the negative high-voltage power supply 10, it forms an electric field with the grounded flower plate 7 to perform corona discharge. The flue gas enters the pre-charge zone of the dust collector through the air inlet 3. The dust in the flue gas first passes through the corona discharge zone and carries a negative charge. Then it enters the filter assembly 6 and is trapped on the inner surface of the filter assembly 6. After the flue gas passes through the filter assembly 6 for dust removal, the zero-valent mercury vapor in the flue gas is oxidized into divalent mercury by the mercury removal catalyst coated on the outer surface of the filter assembly 6 (later absorbed and removed in the wet desulfurization tower), completing the integrated dust removal and mercury removal. The purified flue gas is then discharged from the air outlet 4.

[0061] As the dust removal working time of the dust collector increases, the amount of dust deposited on the inner surface of the filter component 6 becomes more and more, and the filtration resistance gradually increases. When the set maximum resistance is reached, the flue gas intake is stopped, and compressed air is fed into the back-blowing air inlet 5. The compressed air flow penetrates into the filter component 6 from the outer surface of the filter component 6, and blows the dust deposited on its inner surface into the ash hopper 2. The back-blowing air is discharged from the air inlet 3. After the dust on the inner surface of the filter component 6 is blown clean, the dust cleaning is completed. However, at this time, the back-blowing air is continued to be fed for 3-5 minutes. After the back-blowing air flow blows away the dust deposited on the surface of the discharge electrode row 9, the back-blowing air intake is stopped, and then the next dust removal working cycle is started.

[0062] The utility model adopts filter bags, filter membranes or ceramic filter tubes and other filter materials for filtering and dust removal. The filter material adopts internal filtration mode, and a demercuration catalyst is coated on the outer surface of the filter material. The lower part of the filter assembly is open and fixed by a flower plate, and the top is closed and fixed by a fixed hanging device. A discharge electrode row is provided at the lower part of the flower plate, which is connected to a negative high voltage and forms a pre-charged electric field with the flower plate. After the dust enters the dust collector from the bottom, it is first charged by the pre-charged electric field, and then enters the interior of the filter assembly. It is retained by the filter material on its inner surface and removed. After dust removal, the flue gas passes through the filter material and is converted into divalent mercury vapor by the demercuration catalyst on its outer surface (divalent mercury is absorbed and removed during desulfurization in the subsequent wet desulfurization tower). The purified flue gas is discharged from the outlet, realizing integrated dust removal and mercury removal.

[0063] On the other hand, the dust collector provided by this utility model uses reverse airflow for dust cleaning. When the dust layer deposited on the inner surface of the filter material reaches a certain thickness and the filtration resistance reaches a set upper limit, the flue gas intake is stopped and the dust cleaning operation begins. Compressed air is introduced through the reverse air inlet, passing through the filter material in the reverse direction from the outer surface, blowing the dust layer into the ash hopper to achieve dust cleaning. After the filter material is cleaned, reverse compressed air is introduced for a period of time to clean the discharge electrode.

Claims

1. A dust collector capable of collaborative mercury removal, characterized in that: It comprises a shell (1), a flower plate (7) is fixed horizontally in the shell (1), the upper part of the flower plate (7) is a dust removal area, and the lower part is an ash hopper (2); A discharge electrode row (9) connected to a negative high-voltage power supply (10) is horizontally fixed in the ash hopper (2), and an air inlet (3) is provided on the side wall of the ash hopper (2) below the discharge electrode row (9); A filter assembly (6) connected to the ash hopper (2) is longitudinally arranged in the dust removal zone, the surface of the filter assembly (6) is coated with a mercury removal catalyst, and an air outlet (4) is provided at the top of the dust removal zone.

2. The dust collector capable of collaborative mercury removal according to claim 1, characterized in that: A back-blowing air inlet (5) is also provided at the top of the dust removal zone.

3. The dust collector capable of collaborative mercury removal according to claim 1 or 2, characterized in that: The discharge electrode row (9) is composed of a plurality of barb wires arranged side by side.

4. The dust collector capable of collaborative mercury removal according to claim 3, characterized in that: The distance between two adjacent thorn lines is 250-350 mm.

5. The dust collector capable of collaborative mercury removal according to claim 3, characterized in that: The thorn wire adopts eight-tooth thorn wire.

6. The dust collector capable of collaborative mercury removal according to claim 1, characterized in that: The distance between the discharge electrode row (9) and the flower plate (7) is 300-400 mm.

7. The dust collector capable of collaborative mercury removal according to claim 1, characterized in that: The filter assembly (6) is a filter bag, filter membrane or ceramic filter tube that is evenly arranged.

8. The dust collector capable of collaborative mercury removal according to claim 1, characterized in that: The ash hopper (2) is conical.

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