A wet electrostatic precipitator for sintering

Abstract

This utility model relates to a wet electrostatic precipitator for sintering, applied in the field of sintering dust removal technology. It solves the problems of existing wet electrostatic precipitators having simple dust removal processes and weak dust removal and suppression effects. It includes a tower body, with a smoke exhaust assembly at the top. Inside the tower body, a first spray element, a second spray element, and a third spray element are arranged sequentially from bottom to top along the longitudinal height. An electrode area is provided between the second and third spray elements. It also includes a rectifier grid located below the first and second spray elements. Inside the top of the tower body, a flow guide is provided for guiding flow into the smoke exhaust assembly. The flow guide includes multiple longitudinally stacked flow guide plates and fixing rods connecting the multiple flow guide plates. The area of ​​the flow guide plates gradually increases from bottom to top, and the flow guide plates are arranged in an upward-facing conical shape. It has multiple dust suppression and dust removal effects, effectively reducing dust emissions, meeting emission standards, and improving environmental protection.

Description

Technical Field

[0001] This invention relates to the field of sintering dust removal technology, and in particular to a wet electrostatic precipitator for sintering. Background Technology

[0002] Wet electrostatic precipitators for sintering are mainly used for dust removal in sintering processes involving dust, steam, flue gas, and other materials containing dust, water, and high-temperature flue gas dust.

[0003] The main working principle is to exhaust the dust by an induced draft fan, use a rectifier grille to coarsely filter the dust and spray it for cleaning, and then use high pressure to capture dust particles on the cathode wires and anode plates on the rectifier grille, and clean them with spray at regular intervals to achieve the functions of dust suppression, filtration and dust removal.

[0004] The existing patent number "CN109499766A" discloses a wet electrostatic precipitator, including a tower body and an electrode plate area disposed within the tower body. An insulator chamber is disposed above the electrode plate area for fixing the broken end of the cathode wire suspension frame. The feature is that: a flue gas distribution plate is disposed at the flue gas inlet inside the tower body, and the flue gas distribution plate is provided with multiple through holes. A flue gas shrinkage ring is disposed above the flue gas distribution plate. A spray layer is disposed between the electrode plate area and the flue gas distribution plate. The electrode plate area includes an anode plate and a cathode wire. Both the anode plate and the cathode plate are wavy, and barbs are provided at the crests and troughs of the cathode wire, with the barbs located on the outwardly protruding side of the crests and troughs.

[0005] The above description has the following problems: the flue gas entering the tower directly enters the electrode plate area and spray layer area for dust removal. The dust removal process of this wet electrostatic precipitator is simple, the dust removal and dust suppression effect is weak, and it does not meet the environmental emission standards. Utility Model Content

[0006] The purpose of this invention is to provide a wet electrostatic precipitator for sintering, which solves the problems of existing wet electrostatic precipitators having a simple dust removal process and weak dust removal and suppression effect.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows: This utility model provides a wet electrostatic precipitator for sintering, including a tower body. An air inlet is provided at the bottom of the tower body, and a smoke exhaust assembly is provided at the top of the tower body. A first spray element, a second spray element, and a third spray element are arranged sequentially from bottom to top along the longitudinal height of the tower body. An electrode plate area is provided between the second spray element and the third spray element. The tower body also includes a flow rectifier grid located below the first spray element and below the second spray element. A flow guide is provided inside the top of the tower body for guiding the smoke exhaust assembly. The flow guide includes multiple flow guide plates arranged longitudinally and a fixing rod connecting the multiple flow guide plates. The area of ​​the flow guide plates gradually increases from bottom to top, and the flow guide plates are arranged in a cone shape with the opening facing upward.

[0008] Furthermore, the rectifier grille includes a rectangular frame and a plurality of rectifier plates disposed within the rectangular frame. The plurality of rectifier plates are disposed in two layers within the rectangular frame, with two rectifier plates staggered and the spacing between two adjacent rectifier plates being equal to the maximum width of the rectifier plate.

[0009] Furthermore, the rectifier plate includes a left side plate and a right side plate, the top ends of the left side plate and the right side plate are connected and the bottom ends extend in opposite directions.

[0010] Furthermore, an air inlet pipe is provided inside the air inlet, the top end of the air inlet pipe extends into the tower body, the outer wall of the air inlet pipe cooperates with the inner wall of the tower body to form a liquid storage cavity, and a shielding cap for guiding the spray liquid into the liquid storage cavity is provided inside the tower body and above the air inlet pipe.

[0011] Furthermore, a drain pipe connected to the liquid storage chamber is provided at the lower part of the tower body, and a control valve is provided on the drain pipe.

[0012] Furthermore, the smoke exhaust assembly includes an exhaust chimney and an induced draft fan disposed within the exhaust chimney.

[0013] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art: This utility model provides a wet electrostatic precipitator for sintering, comprising a tower body with an air inlet at the bottom and a smoke exhaust assembly at the top. Within the tower body, a first spray element, a second spray element, and a third spray element are arranged sequentially from bottom to top along the longitudinal height. An electrode area is provided between the second and third spray elements. The device also includes a rectifier grid positioned below the first and second spray elements. Inside the top of the tower body, a guide element for guiding air into the smoke exhaust assembly is provided. The guide element includes multiple longitudinally stacked guide plates and fixing rods connecting the guide plates. The area of ​​the guide plates gradually increases from bottom to top, and the guide plates are cone-shaped with their openings facing upwards. Through the rectifier grid and guide plates arranged within the tower, multiple dust suppression and removal effects are achieved in combination, effectively reducing dust emissions, meeting emission standards, and improving environmental protection. Attached Figure Description

[0014] The following sections will describe some specific embodiments of the present invention in a detailed manner by way of example and not limitation, with reference to the accompanying drawings. The same reference numerals in the drawings denote the same or similar parts or components. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings: Figure 1 This is a cross-sectional view of the overall structure in a preferred embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of the rectifier grille in a preferred embodiment of the present invention; Figure 3 This is a side sectional view of the rectifier grille in a preferred embodiment of the present invention.

[0015] The reference numerals in the attached figures are explained as follows: 1. Tower body; 2. First spray component; 3. Second spray component; 4. Third spray component; 5. Electrode plate area; 6. Smoke exhaust assembly; 61. Exhaust chimney; 62. Exhaust fan; 7. Rectifying grid; 71. Rectangular frame; 72. Rectifying plate; 721. Left side plate; 722. Right side plate; 8. Drainage component; 81. Drainage plate; 82. Fixing rod; 9. Air inlet pipe; 10. Liquid storage chamber; 11. Sewage discharge pipe; 12. Control valve; 13. Shielding cap. Detailed Implementation

[0016] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0017] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0018] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0019] refer to Figure 1 , Figure 2 and Figure 3 This utility model provides a wet electrostatic precipitator for sintering, comprising a tower body 1, an air inlet at the bottom of the tower body 1, and an exhaust port of the sintering mixer connected to the air inlet to discharge dust and flue gas to be treated into the tower body 1; a first spray element 2, a second spray element 3, and a third spray element 4 are arranged sequentially from bottom to top along the longitudinal height of the tower body 1, and an electrode plate area 5 is arranged between the second spray element 3 and the third spray element 4; a smoke exhaust assembly 6 is arranged at the top of the tower, including an exhaust chimney 61 and an induced draft fan 62 arranged in the exhaust chimney 61. The smoke exhaust assembly 6 with this structure guides the dust and flue gas at the bottom of the tower to the top of the tower body 1, and the dust and flue gas are treated during the process of guiding the flow.

[0020] refer to Figure 1 , Figure 2 and Figure 3 The system also includes a flow-rectifying grid 7 positioned below the first spray element 2 and below the second spray element 3. The flow-rectifying grid 7 comprises a rectangular frame 71 and multiple flow-rectifying plates 72 disposed within the rectangular frame 71. The multiple flow-rectifying plates 72 are arranged in two layers within the rectangular frame 71, with two flow-rectifying plates 72 staggered. The distance between two adjacent flow-rectifying plates 72 is equal to the maximum width of the flow-rectifying plate 72. Each flow-rectifying plate 72 includes a left side plate 721 and a right side plate 722. The top ends of the left side plate 721 and the right side plate 722 are connected, and their bottom ends extend in opposite directions. This flow-rectifying grid 7 structure effectively blocks upward-flowing dust and flue gas, forcing high-speed airflow to disperse and guiding low-speed airflow to accelerate, ultimately making the airflow velocity and direction across the entire cross-section of the tower body 1 very uniform. Furthermore, the flow-rectifying plates 72 block waste dust in the dust and flue gas, playing a role in dust removal and suppression, and also guiding the sprayed liquid.

[0021] refer to Figure 1 , Figure 2 and Figure 3 The top of the tower body 1 is equipped with a flow guide 8 for guiding the smoke exhaust assembly 6. The flow guide 8 includes multiple longitudinally stacked flow guide plates 81 and fixing rods 82 connecting the multiple flow guide plates 81. The area of ​​the flow guide plates 81 gradually increases from bottom to top, and the flow guide plates 81 are cone-shaped with their openings facing upwards. The multiple layers and independent flow guide plates 81 can change the direction of the rising flue gas and block rising particles and dust, causing them to fall, thus playing a multiple role in dust suppression.

[0022] refer to Figure 1 , Figure 2 and Figure 3 An air inlet pipe 9 is installed inside the air inlet, with its top end extending into the tower body 1. The outer wall of the air inlet pipe 9 cooperates with the inner wall of the tower body 1 to form a liquid storage chamber 10. A shielding cap 13 is installed inside the tower body 1 and above the air inlet pipe 9 to guide the spray liquid into the liquid storage chamber 10. The shielding cap can be disc-shaped or cone-shaped, and the maximum diameter of the lower end of the shielding cap 13 is larger than the outer diameter of the air inlet pipe 9. A drain pipe 11 communicating with the liquid storage chamber 10 is installed at the lower part of the tower body 1, and a control valve 12 is installed on the drain pipe 11. The dust and fumes entering through the shielding cap 13 are discharged from the periphery of the shielding cap 13, which disperses the airflow entering the tower body 1 at high speed, and also allows the spray liquid and sludge washed down to be discharged into the liquid storage chamber 10, facilitating sewage discharge.

[0023] In summary, by using the rectifying grid 7 and the diversion plate 81 installed inside the tower, multiple dust suppression and removal effects can be achieved through their combined use, which can more effectively reduce dust emissions, meet emission standards, and improve environmental protection.

[0024] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the protection scope of this utility model.

Claims

1. A wet electric dust collector for sintering, comprising a tower body (1), a gas inlet being arranged at the bottom of the tower body (1), a smoke exhaust assembly (6) being arranged at the top of the tower body, a first spray (2), a second spray (3) and a third spray (4) being arranged in the tower body (1) in sequence from bottom to top along the longitudinal height, and a polar plate area (5) being arranged between the second spray (3) and the third spray (4), characterized in that, It also includes a flow-rectifying grid (7) disposed below the first spray element (2) and below the second spray element (3). The top of the tower body (1) is provided with a flow-guiding element (8) for guiding the smoke exhaust assembly (6). The flow-guiding element (8) includes multiple flow-guiding plates (81) arranged longitudinally and a fixing rod (82) connecting the multiple flow-guiding plates (81). The area of ​​the flow-guiding plates (81) gradually increases from bottom to top. The flow-guiding plates (81) are arranged in a cone shape with the opening facing upward.

2. The wet electrostatic precipitator for sintering according to claim 1, characterized in that, The rectifier grille (7) includes a rectangular frame (71) and a plurality of rectifier plates (72) disposed within the rectangular frame (71). The plurality of rectifier plates (72) are disposed in two layers within the rectangular frame (71), and the two rectifier plates (72) are staggered. The distance between two adjacent rectifier plates (72) is equal to the maximum width of the rectifier plate (72).

3. The wet electrostatic precipitator for sintering according to claim 2, characterized in that, The rectifier plate (72) includes a left side plate (721) and a right side plate (722), the top ends of the left side plate (721) and the right side plate (722) are connected and the bottom ends extend in opposite directions.

4. The wet electrostatic precipitator for sintering according to claim 1, characterized in that, An air inlet pipe (9) is provided inside the air inlet. The top end of the air inlet pipe (9) extends into the tower body (1). The outer wall of the air inlet pipe (9) cooperates with the inner wall of the tower body (1) to form a liquid storage chamber (10). A shielding cap (13) for guiding the spray liquid into the liquid storage chamber (10) is provided inside the tower body (1) and above the air inlet pipe (9).

5. The wet electrostatic precipitator for sintering according to claim 4, characterized in that, The lower part of the tower body (1) is provided with a sewage pipe (11) that communicates with the liquid storage chamber (10), and a control valve is provided on the sewage pipe (11).

6. The wet electrostatic precipitator for sintering according to claim 1, characterized in that, The exhaust assembly (6) includes an exhaust chimney (61) and an induced draft fan (62) disposed within the exhaust chimney (61).

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