An efficient conductive filter trough electrostatic precipitator

Abstract

An efficient conductive filter cell electrostatic precipitator provided by the present invention includes a housing and more than two electric fields; each of the electric fields includes a plurality of cathode wire groups and a plurality of anode plate rows; a row of breathable conductive filter cells is arranged downstream of the plurality of anode plate rows; a plurality of first cathode wires of one cathode wire group are arranged between any two adjacent anode plate rows on the left and right among the plurality of anode plate rows; one or two second cathode wires of one cathode wire group are arranged between any two adjacent conductive filter cells on the left and right in the row of conductive filter cells; the discharge property of the second cathode wire is significantly weaker than that of the first cathode wire. In the channel between any two adjacent conductive filter cells on the left and right in the row of conductive filter cells, the dust advancing with the air flow can continue or start to be charged; at the same time, the negatively charged dust migrates towards the above-mentioned conductive filter cells, and a part of the negatively charged dust will accumulate on them.

Description

Technical Field

[0001] The present invention relates to the technical field of electrostatic precipitation, and in particular to a highly efficient conductive filter trough electrostatic precipitator. Background Art

[0002] In the high-voltage electric field of an electrostatic precipitator, a large number of electrons and positive ions are generated through corona discharge; during their movement towards the opposite electrode, they encounter dust in the flue gas and make it become negatively charged dust or positively charged dust; then, these negatively charged dust and positively charged dust tend towards the anode and cathode respectively under the action of the electric field force, and most of the negatively charged dust and positively charged dust will be deposited on the anode and cathode respectively, thus achieving the purpose of purifying the flue gas.

[0003] When the dust-containing flue gas travels to any electric field inlet section inside the electrostatic precipitator, the dust concentration distribution at the inlet of each electric field channel is roughly uniform; however, when the dust-containing flue gas travels to the end section of each electric field channel, the flue gas closer to the surface of the anode plate has a higher dust concentration, while the flue gas farther from the surface of the anode plate has a lower dust concentration. Some people have provided a row of breathable conductive filter troughs downstream of the anode plate row in each electric field of the electrostatic precipitator. Since the air inlets of the above-mentioned conductive filter troughs are all directed towards the air outlet end of the anode plate directly in front of them, most of the charged dust escaping along the surface of the anode plate at the rear of the electric field, and most of the secondary dust generated when the anode plate is vibrated for dust cleaning, can enter the above-mentioned conductive filter troughs along with the airflow and be effectively captured under the dual action of electrostatic adsorption and interception filtration, thus significantly reducing the dust concentration of the flue gas at the outlet of the electrostatic precipitator.

[0004] Because a part of the dust entering through the air inlet of the above-mentioned conductive filter troughs along with the airflow can escape to the next electric field or the outlet end of the electrostatic precipitator through the mesh holes or pores of the above-mentioned conductive filter troughs; in addition, a small part of the secondary dust generated when the above-mentioned conductive filter troughs and the anode plate upstream of them are vibrated for dust cleaning can also escape to the next electric field or the outlet end of the electrostatic precipitator through the channels between the two adjacent conductive filter troughs in the above-mentioned conductive filter troughs along with the airflow, so the dust concentration of the flue gas at the outlet of the existing conductive filter trough electrostatic precipitator is still a bit high - naturally, its dust removal efficiency still needs to be improved. Therefore, how to significantly improve the capture efficiency of the conductive filter trough for the charged dust escaping along the surface of the anode plate at the rear of the electric field and the secondary dust generated when the conductive filter trough and the anode plate upstream of it are vibrated for dust cleaning is a technical problem that needs to be urgently solved by those skilled in the art. Summary of the Invention

[0005] The present invention provides an efficient conductive filter cell electrostatic precipitator, aiming to significantly improve the collection efficiency of the conductive filter cell for the charged dust escaping along the surface of the anode plate at the rear of the electric field and the secondary dust raising generated when rapping and cleaning the conductive filter cell and the anode plate located upstream thereof, thereby significantly improving the dust removal efficiency of the conductive filter cell electrostatic precipitator.

[0006] The present invention adopts the following technical solutions:

[0007] An efficient conductive filter cell electrostatic precipitator includes a housing and more than two electric fields; each of the electric fields includes a plurality of cathode wire groups and a plurality of anode plate rows; a row of breathable conductive filter cells is arranged downstream of the plurality of anode plate rows; the air inlet of each conductive filter cell in the row of conductive filter cells faces the air outlet end of the anode plate directly in front of it; each cathode wire group includes a plurality of first cathode wires; a plurality of first cathode wires of one cathode wire group are arranged between any two adjacent anode plate rows on the left and right in the plurality of anode plate rows; each cathode wire group further includes one or two second cathode wires; one or two second cathode wires of one cathode wire group are arranged between any two adjacent conductive filter cells on the left and right in the row of conductive filter cells; the discharge property of the second cathode wire is significantly weaker than that of the first cathode wire.

[0008] Preferably, the first cathode wire has a tip discharge structure, while the second cathode wire does not have a tip discharge structure and its appearance is relatively smooth; the cross-sectional area of the main body of the first cathode wire is significantly smaller than the cross-sectional area of the second cathode wire.

[0009] Preferably, each conductive filter cell includes a symmetrically arranged trough-shaped support frame and a dust collection trough fixedly installed on the trough-shaped support frame.

[0010] Preferably, each conductive filter cell further includes a horizontally arranged upper flap adjusting piece and a horizontally arranged lower flap adjusting piece;

[0011] Each trough-shaped support frame includes a vertically arranged bottom trough support frame and two trough wall support frames symmetrically rotatably connected to the left and right ends of the bottom trough support frame; the front upper ends of the two trough wall support frames are respectively fixedly connected to the left and right ends of the upper flap adjusting piece, and the front lower ends of the two trough wall support frames are respectively fixedly connected to the left and right ends of the lower flap adjusting piece;

[0012] Each dust collection trough includes a dust collection trough bottom fixedly installed outside the bottom trough support frame and two dust collection trough side parts symmetrically fixedly installed outside the two trough wall support frames; the included angles between the two dust collection trough side parts and the dust collection trough bottom are all between 100° and 120°.

[0013] Preferably, the bottom of the dust collection tank and the two side portions of the dust collection tank are each formed by splicing a plurality of rectangular wire meshes or porous foam metal plates; the wire mesh is formed by braiding or welding a plurality of stainless steel wires or a plurality of manganese-nickel alloy fibers.

[0014] Preferably, each conductive filter tank further includes an auxiliary dust collection plate vertically arranged in the trough-shaped support frame or a cylindrical porous jet cleaning pipe;

[0015] The setting direction of the auxiliary dust collection plate is parallel to the setting direction of the anode plate directly in front of it; the air inlet end of the auxiliary dust collection plate is fixedly connected to the air outlet end of the anode plate directly in front of it, or the upper and lower parts of the air inlet end of the auxiliary dust collection plate are respectively fixedly connected to the middle part of the upper angle adjusting piece and the middle part of the lower angle adjusting piece, and the middle parts of the upper angle adjusting piece and the lower angle adjusting piece are respectively fixedly connected to the upper and lower parts of the air outlet end of the anode plate directly in front of it; the air outlet end of the auxiliary dust collection plate is fixedly connected to the bottom trough support frame; the porous jet cleaning pipe is provided with a plurality of regions with dust blowing holes at equal intervals along its height direction; a plurality of dust blowing holes are symmetrically arranged on the left and right in each region with dust blowing holes; the air outlet of each dust blowing hole faces the dust collection tank.

[0016] Preferably, at least in one electric field, another row of conductive filter tanks is further arranged behind the plurality of cathode wire groups; the air inlet of each conductive filter tank in the other row of conductive filter tanks faces the second cathode wire directly in front of it.

[0017] Preferably, the distance between the last second cathode wire of each cathode wire group and the conductive filter tank in the other row of conductive filter tanks directly behind it is slightly greater than or equal to the distance between it and the two conductive filter tanks in the row of conductive filter tanks on its left and right sides.

[0018] Preferably, the upper end of each conductive filter tank in the other row of conductive filter tanks is welded to a horizontally arranged angle steel; the left and right ends of the horizontally arranged angle steel are respectively fixedly connected to the left and right side plates of the housing.

[0019] Preferably, the other row of conductive filter tanks is equipped with a set of side vibration cleaning device for the filter tank; the set of side vibration cleaning device for the filter tank includes a vibration shaft and a plurality of integral hammers, and a plurality of filter tank vibration anvils respectively welded on the rear parts of the conductive filter tanks in the other row of conductive filter tanks.

[0020] In each electric field of an efficient conductive filter cell electrostatic precipitator provided by the present invention, most of the charged dust escaping from the surface of the anode plate at the rear of the electric field, and most of the secondary dust raised when the anode plate is vibrated for dust cleaning, can enter the row of conductive filter cells arranged downstream of several anode plate rows along with the air flow, and are effectively captured by them under the dual action of electrostatic adsorption and interception filtration. In addition, most of the secondary dust raised when each conductive filter cell in the row of conductive filter cells is vibrated for dust cleaning is also effectively captured by them under the dual action of electrostatic adsorption and interception filtration. Since one or two second cathode wires of the cathode wire group are arranged between any two adjacent conductive filter cells on the left and right in the row of conductive filter cells, most of the dust escaping from the mesh holes or pores of the above-mentioned conductive filter cells, a small part of the charged dust escaping from the surface of the anode plate at the rear of the electric field, the charged dust in the flue gas relatively far from the surface of the anode plate at the rear of the electric field, and a small part of the secondary dust raised when the above-mentioned conductive filter cells and the anode plate located upstream of them are vibrated for dust cleaning can continue to be charged or start to be charged while advancing along with the air flow after entering the channel between any two adjacent conductive filter cells on the left and right in the row of conductive filter cells; at the same time, the negatively charged dust and the positively charged dust in the above-mentioned channel migrate towards the above-mentioned conductive filter cells and the above-mentioned second cathode wire respectively under the action of the electric field force, and a part of the negatively charged dust will accumulate on the above-mentioned conductive filter cells - naturally, a part of the positively charged dust will accumulate on the above-mentioned second cathode wire, thereby significantly improving the dust removal efficiency of this conductive filter cell electrostatic precipitator. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic structural diagram of an efficient conductive filter cell electrostatic precipitator provided by the present invention.

[0022] Figure 2 is Figure 1 a partial enlarged view of part I in

[0023] Figure 3 is a schematic structural diagram when a conductive filter cell (I) in the present invention is fixedly connected to an anode plate.

[0024] Figure 4 is a schematic structural diagram of the conductive filter cell (II) in the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] In order to make the purpose and technical solutions of the present invention clearer, the following further describes the content of the present invention with reference to the drawings and embodiments.

[0026] As Figures 1 to 4An efficient conductive filter cell electrostatic precipitator provided by the present invention as shown in the figure includes an inlet flue gas box 10, a housing 20, a first electric field, a second electric field, and an outlet flue gas box 90.

[0027] Both the first electric field and the second electric field include nine anode plate rows 40 and eight cathode wire groups 30. A row of conductive filter cells is arranged downstream of the nine anode plate rows 40, and another row of conductive filter cells is arranged downstream of the eight cathode wire groups 30. The nine anode plate rows 40 and the eight cathode wire groups 30 are arranged in parallel and alternately; the distance B between any two adjacent anode plate rows 40 among the nine anode plate rows 40 is 450 mm. In order to appropriately vibrate and clean the anode-cathode system of each electric field and the other row of conductive filter cells in a timely manner, each electric field is equipped with a set of anode side vibration cleaning devices 50 provided with nine integral hammers (one), and a set of cathode side vibration cleaning devices (note: Figure 1 not shown in the figure) located above the anode side vibration cleaning devices 50 and provided with eight integral hammers (two), while another row of conductive filter cells arranged behind the eight cathode wire groups 30 is equipped with a set of filter cell side vibration cleaning devices 80.

[0028] Each set of filter cell side vibration cleaning devices 80 includes a vibration shaft and eight integral hammers (three), and eight filter cell vibration anvils 75 respectively welded on the rear parts of the respective conductive filter cells (two) 70 in the other row of conductive filter cells. Obviously, the mass of the integral hammer (one) and the mass of the integral hammer (two) are both significantly greater than the mass of the integral hammer (three) (unit: kg). By sequentially hitting each of the filter cell vibration anvils 75 with the integral hammers (three) in the filter cell side vibration cleaning devices 80, most of the dust accumulated on the conductive filter cells (two) 70 can be removed.

[0029] Each anode plate row 40 includes eight anode plates 41, an anode vibration rod 42, and an anode vibration anvil. Each cathode wire group 30 includes sixteen first cathode wires 31 and one second cathode wire 32. Among any two adjacent anode plate rows 40 among the nine anode plate rows 40, sixteen first cathode wires 31 of a cathode wire group 30 are arranged; among any two adjacent conductive filter cells (one) 60 in the row of conductive filter cells, one second cathode wire 32 of a cathode wire group 30 is arranged. The distance between the second cathode wire 32 and the two conductive filter cells (one) 60 on its left and right sides is slightly smaller than the distance between the first cathode wires 31 and the two anode plate rows 40 on its left and right sides.

[0030] The cross-section of the main body of the first cathode wire 31 described above is circular (note: it can be changed to elliptical or other shapes), while the cross-section of the second cathode wire 32 is elliptical (note: it can be changed to circular or other shapes), and the major axis of the ellipse is located on the symmetry center line of the cathode wire group 30; also, since the first cathode wire 31 has a needle-shaped tip discharge structure, while the second cathode wire 32 does not have a tip discharge structure and its appearance is relatively smooth; in addition, the cross-sectional area of the main body of the first cathode wire 31 is significantly smaller than the cross-sectional area of the second cathode wire 32, so the discharge property of the second cathode wire 32 is significantly weaker than that of the first cathode wire 31.

[0031] Said row of conductive filter troughs includes nine conductive filter troughs (one) 60 arranged downstream of the nine anode plate rows 40. The air inlets of each conductive filter trough (one) 60 face the air outlet end of the anode plate 41 directly in front of it. Each conductive filter trough (one) 60 includes a horizontally arranged angle upper adjusting piece (one) (note: Figure 2 not shown in the figure), a horizontally arranged angle lower adjusting piece (one) 61, a symmetrically shaped trough-shaped support frame (one) 62, and an auxiliary dust collecting plate 63 vertically installed in the trough-shaped support frame (one) 62, and a dust collecting trough (one) 64 fixedly installed on the trough-shaped support frame (one) 62.

[0032] Each trough-shaped support frame (one) 62 includes a vertically arranged bottom trough support frame (one) 621 and two trough wall support frames (one) 622 symmetrically and rotatably connected to the left and right ends of the bottom trough support frame (one) 621. The front upper ends of these two trough wall support frames (one) 622 are respectively fixedly connected to the left and right ends of the angle upper adjusting piece (one), and the front lower ends of these two trough wall support frames (one) 622 are respectively fixedly connected to the left and right ends of the angle lower adjusting piece (one) 61.

[0033] Each dust collecting trough (one) 64 includes a dust collecting trough bottom (one) 641 fixedly installed outside the bottom trough support frame (one) 621 and two dust collecting trough sides (one) 642 symmetrically and fixedly installed outside the two trough wall support frames (one) 622. The angle α between the two dust collecting trough sides (one) 642 and the dust collecting trough bottom (one) 641 is a value between 100° and 120°, such as 101° or 115°, to facilitate the two dust collecting trough sides (one) 642 to capture the charged dust that enters the conductive filter trough (one) 60 along with the air flow.

[0034] The bottom (1) 641 of the dust collection trough and the side (1) 642 of the dust collection trough are both formed by splicing several rectangular wire meshes. Each of the rectangular wire meshes is formed by weaving or welding several stainless steel wires or several manganese-nickel alloy fibers. Of course, the bottom (1) 641 of the dust collection trough and the side (1) 642 of the dust collection trough can also be formed by splicing several rectangular porous foam metal plates.

[0035] The setting direction of the auxiliary dust collection plate (1) 63 is parallel to the setting direction of the anode plate 41 directly in front of it. Through several bolts, flat washers and nuts, the upper and lower parts of the air inlet end of the auxiliary dust collection plate 63 are respectively fixedly connected to the middle part of the upper adjusting piece (1) of the included angle and the middle part of the lower adjusting piece (1) 61 of the included angle, and the middle parts of the upper adjusting piece (1) of the included angle and the lower adjusting piece (1) 61 of the included angle are respectively fixedly connected to the upper and lower parts of the air outlet end of the anode plate directly in front of it; while the air outlet end of the auxiliary dust collection plate (1) 63 is fixedly connected to the bottom trough support frame (1) 621. Therefore, by the integral hammers (1) in the anode side vibration dust cleaning device 50 sequentially hitting each anode vibration anvil, most of the dust accumulated on the anode plate row 40 and the conductive filter trough (1) 60 behind it can be removed simultaneously. Of course, the air inlet end of the auxiliary dust collection plate (1) 63 can also be directly fixedly connected to the air outlet end of the anode plate 41 directly in front of it.

[0036] The other row of conductive filter troughs includes eight conductive filter troughs (2) 70 located downstream of the eight cathode wire groups 30. The upper end of each conductive filter trough (2) 70 is fixedly welded to the horizontally placed angle steel; the left and right ends of the horizontally placed angle steel are respectively fixedly connected to the left and right side plates of the housing 20 (note: Figure 1 and Figure 2 not shown in the figure). The air inlet of each conductive filter trough (2) 70 faces the second cathode wire 32 directly in front of it, so as to effectively capture the charged dust escaping from the channel between any two adjacent conductive filter troughs (1) 60 in the row of conductive filter troughs.

[0037] Each conductive filter trough (2) 70 includes a horizontally arranged upper adjusting piece (2) of the included angle (note: Figure 2 not shown in the figure), a horizontally arranged lower adjusting piece (2) 71 of the included angle, a symmetrically arranged trough-shaped support frame (2) 72, a cylindrical porous jet dust cleaning pipe 73 vertically arranged in the trough-shaped support frame (2) 72, and a dust collection trough (2) 74 fixedly installed on the trough-shaped support frame (1) 72.

[0038] Each trough-shaped support frame (II) 72 includes a vertically arranged bottom trough support frame (II) 721 and two trough wall support frames (II) 722 symmetrically and rotatably connected to the left and right ends of the bottom trough support frame (II) 721. The left and right ends of the upper angle adjusting piece (II) are respectively fixedly connected to the front upper ends of the two trough wall support frames (II) 722, while the left and right ends of the lower angle adjusting piece (II) 71 are respectively fixedly connected to the front lower ends of the two trough wall support frames (II) 722.

[0039] Each dust collecting trough (II) 74 includes a dust collecting trough bottom (II) 741 fixedly installed outside the bottom trough support frame (II) 721 and two dust collecting trough sides (II) 742 symmetrically and fixedly installed outside the two trough wall support frames (II) 722. The included angle β between the two dust collecting trough sides (II) 742 and the dust collecting trough bottom (II) 741 is also a value between 100° and 120°, such as 101° or 115°, which is beneficial for the two dust collecting trough sides (II) 742 to capture the charged dust that enters the conductive filter trough (II) 70 along with the airflow.

[0040] Similar to the dust collecting trough bottom (I) 641 and the dust collecting trough side (I) 642, the dust collecting trough bottom (II) 741 and the dust collecting trough side (II) 742 are also formed by splicing a number of rectangular wire meshes or porous foam metal plates; moreover, each rectangular wire mesh is also formed by weaving or welding a number of stainless steel wires or a number of manganese-nickel alloy fibers.

[0041] The porous jet cleaning pipe 73 is provided with a number of regions for opening dust blowing holes at equal intervals along its height direction; a plurality of dust blowing holes are symmetrically opened on the left and right in each region for opening dust blowing holes; the air outlet of each dust blowing hole faces the dust collecting trough (II) 74, so that after the dust collecting trough (II) 74 is vibrated and cleaned by the filter trough side vibration cleaning device 80, the dust collecting trough (II) 74 is continuously cleaned by means of blowing, so as to more thoroughly remove the dust accumulated on the dust collecting trough (II) 74, especially when the material of the dust collecting trough (II) 74 is porous foam metal.

[0042] Since the cross-section of the second cathode wire 32 in this embodiment is elliptical, and the major axis of the ellipse is located on the symmetry center line of the cathode wire group 30, the distance between the second cathode wire 32 and the conductive filter trough (two) 70 directly behind it should be slightly greater than the distance between it and the two conductive filter troughs (one) 60 on its left and right sides, so as not to affect the operating voltage of the electric field. However, when the cross-section of the second cathode wire 32 is changed to circular, the distance between the second cathode wire 32 and the conductive filter trough (two) 70 directly behind it only needs to be equal to the distance between it and the two conductive filter troughs (one) 60 on its left and right sides, in order to reduce the length of the housing 20. The second cathode wire 32 is fixedly connected to the cathode frame in front of it, which is equipped with multiple first cathode wires 31, through a number of small cross bars. Please refer to Figure 2 . This installation method of fixedly connecting the second cathode wire 32 to the cathode frame equipped with multiple first cathode wires 31 is applicable to both newly built electrostatic precipitators and is very convenient for retrofitting old electrostatic precipitators.

[0043] In addition, if the distance between the second cathode wire 32 and the conductive filter trough (two) 70 directly behind it is significantly greater than the distance between the above-mentioned first cathode wire 31 and the two anode plate rows 40 on its left and right sides (note: 225 mm), then another second cathode wire 32 can be added directly behind the second cathode wire 32, and the distance between the other second cathode wire 32 and the conductive filter trough (two) 70 directly behind it should be slightly greater than the distance between it and the two conductive filter troughs (one) 60 on its left and right sides; however, the distance between these two second cathode wires 32 can be less than 100 mm. Of course, the distances between the second cathode wire 32 and the other second cathode wire 32 and the two conductive filter troughs (one) 60 on their left and right sides are both slightly less than the distance between the above-mentioned first cathode wire 31 and the two anode plate rows 40 on its left and right sides.

[0044] Four points are supplemented and explained below:

[0045] First, in each of the above electric fields, most of the charged dust escaping from the surface of the anode plate 41 at the rear of the electric field and most of the secondary dust generated when the anode plate 41 is vibrated for dust cleaning are effectively trapped by the row of conductive filter troughs after entering the row of conductive filter troughs arranged downstream of the nine-piece anode plate row 40 along with the air flow. Since one or two second cathode wires 32 of a cathode wire group 30 are arranged between any two adjacent left and right conductive filter troughs (one) 60 in the row of conductive filter troughs, most of the dust escaping from the mesh or pores of the above-mentioned conductive filter trough (one) 60 along with the air flow, a small part of the charged dust escaping from the surface of the anode plate 41 at the rear of the electric field, and the charged dust in the flue gas relatively far from the surface of the anode plate 41 at the rear of the electric field, as well as a part of the secondary dust generated when the above-mentioned conductive filter trough (one) 60 and the anode plate 41 upstream of it are vibrated for dust cleaning, can continue to be charged or start to be charged while advancing along with the air flow after entering the channel between any two adjacent left and right conductive filter troughs (one) 60 in the row of conductive filter troughs. At the same time, the negatively charged dust and positively charged dust in the above-mentioned channel migrate towards the above-mentioned conductive filter trough (one) 60 and the above-mentioned second cathode wire 32 respectively under the action of the electric field force, and a part of the negatively charged dust will accumulate on the side part (one) 642 of the dust collection trough of the above-mentioned conductive filter trough (one). Naturally, a part of the positively charged dust will accumulate on the above-mentioned second cathode wire 32, thus significantly improving the dust removal efficiency of this conductive filter trough electrostatic precipitator.

[0046] In addition, since a second cathode wire 32 is arranged directly in front of each conductive filter trough (two) 70 in the other row of conductive filter troughs and the distance between them is relatively small, the charge amount of the charged dust when it advances to the air inlet of the conductive filter trough (two) 70 along with the air flow can be significantly increased, thus significantly enhancing the trapping efficiency of the other row of conductive filter troughs for the charged dust escaping from the channel between any two adjacent left and right conductive filter troughs (one) 60 along with the air flow.

[0047] Second, in each of the above-mentioned electric fields, although the distance between each second cathode wire 32 of each cathode wire group 30 and the two conductive filter troughs (1) 60 on its left and right sides, and the distance between the last second cathode wire 32 of each cathode wire group 30 and the one conductive filter trough (2) 70 directly behind it are slightly smaller than the distance between the first cathode wire 31 and the anode plates 41 on its two sides, since the discharge property of the second cathode wire 32 is significantly weaker than that of the first cathode wire 31, it will not cause the operating voltage of each of the above-mentioned electric fields to decrease. Naturally, setting the second cathode wire 32 in this way will neither reduce the collection efficiency of the anode plate row 40 for the charged dust in the flue gas flowing past it, nor reduce the collection efficiency of the conductive filter troughs (1) 60 and the conductive filter troughs (2) 70 for the charged dust in the flue gas entering them, and even less reduce the collection efficiency of the side part (1) 642 of the dust collection trough of the conductive filter trough (1) for the negatively charged dust advancing with the airflow in the channel between any two adjacent conductive filter troughs (1) 60 in the row of conductive filter troughs.

[0048] Third, in each of the above-mentioned electric fields, we can replace the auxiliary dust collection plates 63 vertically installed in each trough-shaped support frame (1) 62 with porous jet cleaning pipes 73. Or replace the porous jet cleaning pipes 73 vertically arranged in each trough-shaped support frame (2) 72 with auxiliary dust collection plates 63.

[0049] Fourth, if the dust concentration of the inlet flue gas of the electrostatic precipitator is relatively high, after appropriately extending the length of the housing 20, we can add the first electric field and / or the second electric field, and set several conductive filter troughs (1) 60 downstream of the anode plate row of the first electric field and / or the second electric field. On the contrary, if the dust concentration of the inlet flue gas of the electrostatic precipitator is relatively low, we can cancel several conductive filter troughs (2) 70 and the filter trough side vibration cleaning device 80 arranged downstream of the anode plate row of the first electric field and / or the second electric field, and correspondingly shorten the length of the housing 20 a little.

[0050] The conventional methods adopted in the present invention are known to those skilled in the art, and their principles and structures can be known to those skilled in the art through relevant technical books or obtained through conventional experimental methods. For example: the installation and use of the anode plate row and the cathode wire group to form an electric field are existing methods or technologies, and the present invention will not elaborate.

[0051] The above description is only a preferred embodiment of the present invention, and does not impose any limitation on the protection scope of the present invention. Therefore, any minor modifications, equivalent changes and decorations made to the above embodiments based on the technical essence of the present invention still belong to the protection scope of the present invention.

Claims

1. An efficient conductive filter cell electrostatic precipitator, comprising a housing and more than two electric fields; each of the electric fields includes a plurality of cathode wire groups and a plurality of anode plate rows; a row of breathable conductive filter cells is arranged downstream of the plurality of anode plate rows; the air inlet of each conductive filter cell in the row of conductive filter cells faces the air outlet end of the anode plate directly in front of it; each cathode wire group includes a plurality of first cathode wires; a plurality of first cathode wires of one cathode wire group are arranged between any two adjacent anode plate rows among the plurality of anode plate rows, and it is characterized in that: Each of the cathode wire groups further includes one or two second cathode wires; one or two second cathode wires of one cathode wire group are disposed between any two adjacent left and right conductive filter troughs in the row of conductive filter troughs; the discharge property of the second cathode wire is significantly weaker than that of the first cathode wire, so as to avoid reducing the operating voltage of each electric field.

2. The efficient conductive filter cell electrostatic precipitator according to claim 1, characterized in that: The first cathode wire has a tip discharge structure, while the second cathode wire does not have a tip discharge structure and has a relatively smooth outer surface; the cross-sectional area of the main body of the first cathode wire is significantly smaller than that of the second cathode wire.

3. The efficient conductive filter cell electrostatic precipitator according to claim 2, characterized in that: Each of the conductive filter troughs includes a trough-shaped support frame that is symmetric about the left and right and a dust collection trough fixedly installed on the trough-shaped support frame.

4. The efficient conductive filter cell electrostatic precipitator according to claim 3, characterized in that: Each of the conductive filter troughs further includes a horizontally arranged upper angle adjustment piece and a horizontally arranged lower angle adjustment piece; each of the trough-shaped support frames includes a vertically arranged bottom trough support frame and two trough wall support frames symmetrically rotatably connected to the left and right ends of the bottom trough support frame; the front upper ends of the two trough wall support frames are respectively fixedly connected to the left and right ends of the upper angle adjustment piece, and the front lower ends of the two trough wall support frames are respectively fixedly connected to the left and right ends of the lower angle adjustment piece; each of the dust collection troughs includes a dust collection trough bottom fixedly installed outside the bottom trough support frame and two dust collection trough side parts symmetrically fixedly installed outside the two trough wall support frames; the included angle between the two dust collection trough side parts and the dust collection trough bottom is between 100° and 120°.

5. The efficient conductive filter cell electrostatic precipitator according to claim 4, characterized in that: The dust collection trough bottom and the two dust collection trough side parts are each formed by splicing a plurality of rectangular wire meshes or porous foam metal plates; the wire mesh is formed by braiding or welding a plurality of stainless steel wires or a plurality of manganese-nickel alloy fibers.

6. The efficient conductive filter cell electrostatic precipitator according to claim 4, characterized in that: Each of the conductive filter troughs further includes an auxiliary dust collection plate vertically arranged in the trough-shaped support frame or a cylindrical porous jet cleaning pipe; the arrangement direction of the auxiliary dust collection plate is parallel to the arrangement direction of the anode plate directly in front of it; the air inlet end of the auxiliary dust collection plate is fixedly connected to the air outlet end of the anode plate directly in front of it, or the upper and lower parts of the air inlet end of the auxiliary dust collection plate are respectively fixedly connected to the middle part of the upper angle adjustment piece and the middle part of the lower angle adjustment piece, and the middle parts of the upper angle adjustment piece and the lower angle adjustment piece are respectively fixedly connected to the upper and lower parts of the air outlet end of the anode plate directly in front of it; the air outlet end of the auxiliary dust collection plate is fixedly connected to the bottom trough support frame; the porous jet cleaning pipe is provided with a plurality of regions with dust blowing holes at equal intervals along its height direction; a plurality of dust blowing holes are symmetrically opened left and right in each region with dust blowing holes; the air outlet of each dust blowing hole faces the dust collection trough.

7. The efficient conductive filter cell electrostatic precipitator according to any one of claims 1 to 6, characterized in that: At least in one of the electric fields, another row of conductive filter troughs is further disposed behind the plurality of cathode wire groups; the air inlet of each conductive filter trough in the other row of conductive filter troughs faces the second cathode wire directly in front of it.

8. The efficient conductive filter cell electrostatic precipitator according to claim 7, characterized in that: The distance between the last second cathode wire of each cathode wire group and the conductive filter trough in the other row of conductive filter troughs located directly behind it is slightly greater than or equal to the distance between it and the two conductive filter troughs in the row of conductive filter troughs on its left and right sides.

9. The efficient conductive filter cell electrostatic precipitator according to claim 7, characterized in that: Each conductive filter trough in the other row of conductive filter troughs is welded to the horizontally placed angle steel at its upper end; the left and right ends of the horizontally placed angle steel are respectively fixedly connected to the left and right side plates of the housing.

10. The efficient conductive filter cell electrostatic precipitator according to claim 7, characterized in that: The other row of conductive filter troughs is equipped with a set of side vibration cleaning devices for the filter troughs; the set of side vibration cleaning devices for the filter troughs includes a vibration shaft and a number of integral hammers, and a number of filter trough vibration anvils respectively welded on the rear parts of the respective conductive filter troughs in the other row of conductive filter troughs.

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