Built-in flue gas wet-process electrostatic dust collection device
By designing a built-in flue gas wet electrostatic dust removal device, the device is fixed inside the chimney, which solves the problem of large area and difficult layout of existing dust removal devices, and realizes deep purification of flue gas dust in existing power station equipment, reducing the Cost and land use requirements.
Patent Information
- Application Number
- CN202420526139.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-18
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2034-03-18
AI Technical Summary
The existing wet electrostatic dust removal device covers a large area and is difficult to arrange, which increases the total investment in equipment, and increases the elevation after being arranged on the top of the desulfurization tower, making it difficult to achieve later equipment transformation and space savings.
A built-in flue gas wet electrostatic dust removal device is designed, which is engaged with the top of the chimney through a fixed cover and a fixing ring, and the fixing device is fixed inside the chimney, thereby utilizing the internal space of the chimney cylinder of the existing power station equipment to avoid additional occupation of external space.
It realizes deep purification of flue gas dust without occupying external space, reduces the equipment cost and land area requirements, and is suitable for deep purification of flue gas dust in coal-fired power plants.
Smart Images
Figure CN222490460U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of deep purification of flue gas and dust in coal-fired power plants, and in particular to a built-in flue gas wet electrostatic dust removal device. Background Art
[0002] The existing dust removal devices occupy a large area, are difficult to arrange on site, use a lot of steel structure materials, and increase the total investment of equipment. Usually, the wet electrostatic dust removal device is arranged on the top of the desulfurization tower, which takes up a lot of space. For technical transformation projects, there is a problem of insufficient space for on-site arrangement. For new projects, there is a problem of increasing the planned area of the entire power plant.
[0003] When the wet electrostatic precipitator is arranged on the top of the desulfurization tower, due to the overall arrangement with the desulfurization tower, the elevation will increase by 14m to 16m after the equipment is completed. If the desulfurization tower is to be expanded and renovated later, a secondary tower needs to be built, otherwise it will be difficult to achieve. The modified unit requires a separate foundation support for the wet electrostatic precipitator, which is expensive. The equipment requires a large amount of steel structure such as the shell and support, and the shell needs to be treated with anti-corrosion and insulation. This part of the steel structure, anti-corrosion and insulation materials and construction costs account for more than half of the total project investment, increasing the investment cost. Utility Model Content
[0004] In order to make up for the above deficiencies, the utility model provides a built-in flue gas wet electrostatic dust removal device.
[0005] The utility model is achieved in this way:
[0006] A built-in flue gas wet electrostatic dust removal device comprises a fixing mechanism and a dust removal mechanism, the fixing mechanism comprises a fixing cover, a fixing ring is installed on the top of the fixing cover, a fixing groove is provided at the bottom of the fixing ring, a supporting plate is installed at the bottom of the fixing cover, a plurality of first air inlet holes are provided at the bottom of the supporting plate, a connecting plate is installed inside the fixing cover, a plurality of second air inlet holes are provided at the top of the connecting plate, the dust removal mechanism comprises an anode tube group and a cathode wire group, the anode tube group is installed on the top of the supporting plate, the cathode wire group is installed on the bottom of the connecting plate, and the cathode wire group is located inside the anode tube group.
[0007] The beneficial effect of adopting the above further scheme is that, because the chimney is hollow, its top is ring-shaped, so the fixing groove can be engaged with the top of the chimney. At this time, tools are used to fix the fixing ring and the chimney together, so that the entire device is located inside the chimney, so as to achieve the purpose of utilizing the internal space of the chimney cylinder of the existing power station equipment, thereby not occupying the external space of the existing power station equipment, with low cost and saving of land area, and can be widely used in the deep purification of flue gas and dust in coal-fired power plants.
[0008] Furthermore, the anode tube group is made of flame-retardant fiberglass, the anode tube group is composed of a plurality of anode tubes, and each anode tube is a regular hexagon, the cathode wire group is a high-efficiency thorn pole wire, the cathode wire group is composed of a plurality of cathode wires, and each anode tube is provided with a cathode wire.
[0009] Furthermore, a limiting frame is installed inside the fixed cover, and a limiting groove is provided on the top of the limiting frame, and the anode tube group is installed in the limiting groove.
[0010] Furthermore, a pair of slots are provided on the outside of the fixed cover, a water pipe is provided inside the fixed cover, both ends of the water pipe are installed in the slots, the water pipe is located above the anode tube group, and a plurality of water outlet grooves are provided at the bottom end of the part above the anode tube group.
[0011] The beneficial effect of adopting the above further scheme is that the clean water of the process water tank is used to rinse the anode tube and form water mist on the surface thereof, thereby washing away the dust attached to the surface.
[0012] Furthermore, the shape and size of the fixed cover are consistent with the internal shape and size of the chimney, the outer wall of the fixed cover fits the inner wall of the chimney, and the size of the fixed groove is consistent with the top ring diameter width of the chimney.
[0013] The beneficial effect of adopting the above further solution is that, since different chimneys have different shapes and sizes, the shape and size of the fixed cover are also not fixed. By matching it with the shape and size of the chimney, the fixed cover can be smoothly placed in the chimney.
[0014] Furthermore, an insulator box is installed on the top of the connection plate, a distribution box is installed in the insulator box, and the distribution box is electrically connected to the cathode wire group through a lead wire.
[0015] Furthermore, an electric heater and a temperature control module are installed in the insulator box.
[0016] The beneficial effect of adopting the above further scheme is that the distribution box supplies power to the cathode wire group, and tens of thousands of volts of direct current high voltage electricity will be formed between the anode tube group and the cathode wire group. Under the action of the strong electric field, a corona layer is generated around the cathode wire group, and the air in the corona layer undergoes avalanche ionization, thereby generating a large number of negative ions and a small number of positive ions. The dust (fog) particles entering the device with the flue gas collide with these positive and negative ions and become charged. The charged dust (fog) particles move toward the anode tube group due to the Coulomb force of the high-voltage electrostatic field; after reaching the anode tube group, the charge they carry is released, and the dust particles are collected by the anode tube group.
[0017] The beneficial effect of the utility model is that the utility model obtains a built-in flue gas wet electrostatic dust removal device through the above design. Since the chimney is hollow, its top is annular, so the fixing groove can be engaged with the top of the chimney. At this time, tools are used to fix the fixing ring and the chimney together, so that the whole device is located inside the chimney, so as to achieve the purpose of utilizing the internal space of the chimney cylinder of the existing power station equipment, thereby not occupying the external space of the existing power station equipment additionally, with low cost and saving of land area, and can be widely used in the deep purification of flue gas and dust in coal-fired power plants. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the following is a brief introduction to the drawings required for use in the implementation mode. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.
[0019] Figure 1 A schematic diagram of the three-dimensional structure of a built-in flue gas wet electrostatic dust removal device provided by the utility model;
[0020] Figure 2 A schematic diagram of the upward three-dimensional structure of a built-in flue gas wet electrostatic dust removal device provided by the utility model;
[0021] Figure 3 for Figure 2 A magnified schematic diagram of the structure A in the middle
[0022] Figure 4 The utility model provides a schematic diagram of the explosion structure of a built-in flue gas wet electrostatic dust removal device.
[0023] In the figure: 100, fixing mechanism; 1001, fixing cover; 1002, fixing ring; 1003, connecting plate; 1004, second air inlet; 1005, insulator box; 1006, supporting plate; 1007, first air inlet; 1008, fixing groove; 1009, limiting frame; 200, dust removal mechanism; 2001, anode tube group; 2002, cathode wire group; 2003, water pipe. DETAILED DESCRIPTION
[0024] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. Obviously, the described implementation is a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0025] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.
[0026] Embodiment 1 of the utility model of a built-in flue gas wet electrostatic dust removal device
[0027] The utility model provides the following technical solutions: Figure 1-Figure 4 , including a fixing mechanism 100 and a dust removal mechanism 200, the fixing mechanism 100 includes a fixing cover 1001, a fixing ring 1002 is installed on the top of the fixing cover 1001, a fixing groove 1008 is provided at the bottom of the fixing ring 1002, a supporting plate 1006 is installed at the bottom of the fixing cover 1001, a plurality of first air inlet holes 1007 are provided at the bottom of the supporting plate 1006, a connecting plate 1003 is installed inside the fixing cover 1001, a plurality of second air inlet holes 1004 are provided at the top of the connecting plate 1003, the dust removal mechanism 200 includes an anode tube group 2001 and a cathode line group 2002, the anode tube group 2001 is installed It is installed on the top of the support plate 1006, and the cathode wire group 2002 is installed on the bottom of the connecting plate 1003, and the cathode wire group 2002 is located inside the anode tube group 2001. Because the chimney is hollow, its top is annular, so the fixing groove 1008 can be engaged with the top of the chimney. At this time, tools are used to fix the fixing ring 1002 and the chimney together, so that the whole device is located inside the chimney, so as to achieve the purpose of utilizing the internal space of the chimney cylinder of the existing power station equipment, thereby not occupying the external space of the existing power station equipment, with low cost and saving of land area, and can be widely used in the deep purification of flue gas and dust in coal-fired power plants.
[0028] Embodiment 2 of a built-in flue gas wet electrostatic dust removal device of the utility model
[0029] Reference Figure 1-Figure 4Specifically, a pair of slots are provided on the outside of the fixed cover 1001, and a water pipe 2003 is provided inside the fixed cover 1001. Both ends of the water pipe 2003 are installed in the slots, and the water pipe 2003 is located above the anode tube group 2001, and a plurality of water outlet grooves are provided at the bottom of the part close to the top of the anode tube group 2001. Clean water from the process water pool is used to rinse the anode tube and form water mist on its surface, thereby washing away the dust attached to the surface.
[0030] Embodiment 3 of a built-in flue gas wet electrostatic dust removal device of the utility model
[0031] Reference Figure 1-Figure 4 Specifically, the fixing mechanism 100 includes a fixing cover 1001, a fixing ring 1002 is installed on the top of the fixing cover 1001, a fixing groove 1008 is opened at the bottom of the fixing ring 1002, a supporting plate 1006 is installed at the bottom of the fixing cover 1001, a plurality of first air inlet holes 1007 are opened at the bottom of the supporting plate 1006, a connecting plate 1003 is installed inside the fixing cover 1001, and a plurality of second air inlet holes 1004 are opened on the top of the connecting plate 1003, and the dust removal mechanism 200 includes an anode tube group 2001 and a cathode wire group 2002, the anode tube group 2001 is installed on the top of the supporting plate 1006, the cathode wire group 2002 is installed at the bottom of the connecting plate 1003, and the cathode wire group 2002 is located inside the anode tube group 2001, an insulator box 1005 is installed on the top of the connecting plate 1003, a distribution box is installed in the insulator box 1005, and the distribution box is connected to the cathode wire group 2002 through a lead. The wire group 2002 is electrically connected, an electric heater and a temperature control module are installed in the insulator box 1005, and the distribution box supplies power to the cathode wire group 2002. A DC high voltage of tens of thousands of volts will be formed between the anode tube group 2001 and the cathode wire group 2002. Under the action of the strong electric field, a corona layer is generated around the cathode wire group 2002, and the air in the corona layer undergoes avalanche ionization, thereby generating a large number of negative ions and a small number of positive ions. The dust and mist particles entering the device with the flue gas collide with these positive and negative ions and become charged. The charged dust and mist particles move toward the anode tube group 2001 due to the Coulomb force of the high-voltage electrostatic field; after reaching the anode tube group 2001, the charge they carry is released, and the dust and mist particles are collected by the anode tube group 2001. The electric heater and the temperature control module can ensure that the insulator box 1005 is in a constant temperature state, thereby effectively preventing fog from entering the insulator box 1005 and preventing moisture condensation.
[0032] Specifically, the working principle of this built-in flue gas wet electrostatic dust removal device is as follows: when in use, since the chimney is hollow, its top is ring-shaped, so the fixing groove 1008 can be engaged with the top of the chimney, and then a tool is used to fix the fixing ring 1002 and the chimney together, so that the entire device is located inside the chimney, and the distribution box supplies power to the cathode wire group 2002, and tens of thousands of volts of DC high voltage will be formed between the anode tube group 2001 and the cathode wire group 2002. Under the action of the strong electric field, the cathode wire A corona layer is generated around the anode tube group (2002), and the air in the corona layer undergoes avalanche ionization, thereby generating a large number of negative ions and a small number of positive ions. The dust (fog) particles entering the device along with the flue gas collide with these positive and negative ions and become charged. The charged dust (fog) particles move toward the anode tube group (2001) due to the Coulomb force of the high-voltage electrostatic field; after reaching the anode tube group (2001), the charge they carry is released, and the dust (fog) particles are collected by the anode tube group (2001).
[0033] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. A built-in flue gas wet electrostatic precipitator, characterized in that: The invention comprises a fixing mechanism (100) and a dust removal mechanism (200), wherein the fixing mechanism (100) comprises a fixing cover (1001), a fixing ring (1002) is installed on the top of the fixing cover (1001), a fixing groove (1008) is provided on the bottom of the fixing ring (1002), a supporting plate (1006) is installed on the bottom of the fixing cover (1001), a plurality of first air inlet holes (1007) are provided on the bottom of the supporting plate (1006), and the fixing cover (1001) is provided with a plurality of first air inlet holes (1007). ) is installed inside the supporting plate (1006), a connecting plate (1003) is provided with a plurality of second air inlet holes (1004) on the top of the connecting plate (1003), the dust removal mechanism (200) comprises an anode tube group (2001) and a cathode wire group (2002), the anode tube group (2001) is installed on the top of the supporting plate (1006), the cathode wire group (2002) is installed on the bottom of the connecting plate (1003), and the cathode wire group (2002) is located inside the anode tube group (2001).
2. A built-in flue gas wet electrostatic precipitator according to claim 1, characterized in that: The anode tube group (2001) is made of flame-retardant glass fiber reinforced plastic, the anode tube group (2001) is composed of a plurality of anode tubes, and each anode tube is a regular hexagon; the cathode wire group (2002) is a high-efficiency thorn electrode wire, the cathode wire group (2002) is composed of a plurality of cathode wires, and each anode tube is provided with a cathode wire.
3. The built-in flue gas wet electrostatic precipitator according to claim 1, characterized in that: A limiting frame (1009) is installed inside the fixed cover (1001), and a limiting groove is provided on the top of the limiting frame (1009), and the anode tube group (2001) is installed in the limiting groove.
4. The built-in flue gas wet electrostatic precipitator according to claim 1, characterized in that: A pair of slots are provided on the outside of the fixed cover (1001), a water pipe (2003) is provided inside the fixed cover (1001), both ends of the water pipe (2003) are installed in the slots, the water pipe (2003) is located above the anode tube group (2001), and a plurality of water outlet grooves are provided at the bottom of the part close to the top of the anode tube group (2001).
5. The built-in flue gas wet electrostatic precipitator according to claim 1, characterized in that: The shape and size of the fixed cover (1001) are consistent with the internal shape and size of the chimney, the outer wall of the fixed cover (1001) fits the inner wall of the chimney, and the size of the fixed groove (1008) is consistent with the top ring diameter width of the chimney.
6. The built-in flue gas wet electrostatic precipitator according to claim 1, characterized in that: An insulator box (1005) is installed on the top of the connection plate (1003), a distribution box is installed in the insulator box (1005), and the distribution box is electrically connected to the cathode wire group (2002) through a lead wire.
7. The built-in flue gas wet electrostatic precipitator according to claim 6, characterized in that: An electric heater and a temperature control module are installed in the insulator box (1005).