Flue gas purification equipment for waste heat recovery and ion wind dust removal

Abstract

The utility model discloses flue gas purification equipment for waste heat recovery and ion wind dust removal, which relates to the field of flue gas purification and comprises a waste heat recovery module, an ion wind dust removal module, a saw-toothed electrode and a flat-plate-shaped electrode, a valve and an air compressor are arranged on one side of the waste heat recovery module, and the valve is used for controlling flue gas to enter; an ion wind dust removal module is arranged on the other side of the waste heat recovery module, partition plates and heat exchange fins are arranged in the waste heat recovery module, a heat exchange fluid cavity is defined by the two partition plates and the shell, and an emitting electrode composed of a sawtooth-shaped electrode and a dust collection electrode composed of a flat-plate-shaped electrode are arranged in the ion wind dust removal module. The flue gas temperature can be reduced through the waste heat recovery module, low-grade waste heat can be recovered, the influence of high-temperature flue gas on the dust removal effect is avoided, the ion wind dust removal device is matched, the content of particulate matter in discharged flue gas can be effectively reduced, and the waste heat recovery device is simple and compact in structure and free of working noise.

Description

Technical Field

[0001] The utility model relates to the field of flue gas purification, in particular to a flue gas purification device for waste heat recovery and ion wind dust removal. Background Art

[0002] With the rapid development of society, the flue gas generated in various life or industrial production has a significant impact on the environment. The harmful substances and particulate matter contained in the flue gas not only pollute the atmosphere, but also pose a threat to human health. Flue gas purification equipment can purify the flue gas, greatly improving the cleanliness of the flue gas discharged into the atmosphere, in line with national and local environmental protection regulations.

[0003] The existing publication number CN220758525U discloses an electric furnace flue gas purification device for industrial silicon smelting. The flue gas is subjected to dust reduction treatment by spraying water on the flue gas. Through the setting of a circulation component, the wastewater after dust reduction can be distilled and the wastewater can be reused, which has the function of saving water. However, the purification equipment adopts the method of spraying water to reduce dust, which makes it difficult to remove fine particles, and does not utilize the heat in the flue gas. At the same time, spraying water for dust removal will significantly increase the humidity of the flue gas, which may cause pipe freezing and heat loss in cold areas. Utility Model Content

[0004] The utility model provides a flue gas purification device for waste heat recovery and ion wind dust removal, so as to recover the heat in the flue gas and reduce the content of particulate matter in the discharged flue gas.

[0005] To achieve the above purpose, the utility model is implemented through the following technical solutions:

[0006] A flue gas purification device for waste heat recovery and ion wind dust removal, comprising:

[0007] A waste heat recovery module, wherein a valve and an air compressor are provided at the smoke inlet end of the waste heat recovery module, a filter is provided at the inlet of the valve, and an ion wind dust removal module is provided at the smoke outlet end of the waste heat recovery module.

[0008] The flue gas purification equipment for waste heat recovery and ion wind dust removal as described above, further, the waste heat recovery module includes a first shell and two partitions, the two partitions and the first shell together form a fluid chamber for heat exchange, a plurality of heat exchange fins are arranged between the two partitions, holes are arranged in the partitions and the heat exchange fins, flue gas ducts are passed through the holes, the holes in the partitions and the heat exchange fins are adapted to the outer contour of the flue gas duct, and the flue gas duct extends from the flue gas inlet of the waste heat recovery module to the flue gas outlet end of the waste heat recovery module.

[0009] As described above, the flue gas purification equipment for waste heat recovery and ion wind dust removal, further, the first shell is provided with a cold water inlet and a hot water outlet, and the cold water inlet and the hot water outlet are arranged between the two partitions and arranged diagonally on opposite sides.

[0010] The flue gas purification equipment with waste heat recovery and ion wind dust removal as described above, further, a high-pressure air tank is arranged above the ion wind dust removal module, and an ash collecting box is arranged below the ion wind dust removal module.

[0011] The flue gas purification equipment with waste heat recovery and ion wind dust removal as described above, further, the ion wind dust removal module includes a second shell, a serrated electrode and a flat electrode, the serrated electrode and the flat electrode are arranged in the second shell, one side of the serrated electrode is fixed on a guide rail slider, the guide rail slider is provided with a guide rail pulley, the guide rail pulley slides in cooperation with the guide rail fixed on the second shell, and the flat electrode is fixed to the second shell by installing an angle code.

[0012] As described above, in the flue gas purification equipment for waste heat recovery and ion wind dust removal, further, the high-pressure air tank is externally connected to a plurality of high-pressure air nozzles, and the high-pressure air nozzles penetrate the second shell and are arranged between the two flat electrodes.

[0013] As described above, in the flue gas purification device for waste heat recovery and ion wind dust removal, further, the ash collecting box is connected to the bottom of the second shell through an ash collecting box slide rail, and the outer wall of the ash collecting box is provided with a circular ring handle.

[0014] The flue gas purification equipment for waste heat recovery and ion wind dust removal as described above, further, the number of teeth included in the serrated electrode is 2-4.

[0015] In the flue gas purification device for waste heat recovery and ion wind dust removal as described above, further, the sawtooth electrodes and the flat plate electrodes are alternately arranged along the extension direction of the guide rail.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] 1. The utility model can reduce the flue gas temperature through the waste heat recovery module to facilitate the dust removal process of the ion wind dust removal module. The low-temperature flue gas is conducive to the absorption of particulate matter by the ion wind dust removal module. Through the waste heat recovery module, the low-grade waste heat in the flue gas can be fully utilized to heat water.

[0018] 2. After being used for a period of time, the utility model sprays high-pressure air through the air compressor at one end of the waste heat recovery module to achieve a self-cleaning effect on the flue gas duct, and sprays high-pressure air through the high-pressure air nozzle above the flat electrode (dust collecting electrode) to achieve a self-cleaning effect on the flat electrode. The collected particulate matter falls into the dust collecting box below the flat electrode with the high-pressure air.

[0019] 3. The utility model can adjust the distance between the serrated electrode and the flat electrode through the slide rail, so as to adjust the voltage applied between the emitter and the dust collecting electrode to change the electric field strength, meet the dust removal needs of flue gas with different particulate matter contents, and adopt appropriate electric field strength to further improve the energy-saving benefits of the device. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0022] Figure 2 This is a partial enlarged view of the ion wind dust removal part of the utility model;

[0023] Figure 3 This is a front view of the ion wind dust removal part of the utility model;

[0024] Figure 4 It is a cross-sectional schematic diagram of the ion wind dust removal part of the utility model;

[0025] Figure 5 It is a partial enlarged view of the partition plate and the heat exchange fins in the utility model.

[0026] In the figure: 1. filter; 2. valve body; 201. valve handle; 3. air compressor; 4. waste heat recovery module; 401. partition; 402. heat exchange fins; 403. flue gas duct; 5. hot water outlet; 6. cold water inlet; 7. high-pressure air tank; 701. high-pressure air nozzle; 8. ash collecting box; 801. ash collecting box slide rail; 802. handle; 9. ion wind dust removal module; 901. serrated electrode; 902. flat electrode; 903. installation angle code; 904. guide rail; 905. guide rail pulley; 906. guide rail slider. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0028] Example:

[0029] It should be noted that the terms "first", "second", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the utility model described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" in the embodiments of the utility model and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0030] In the description of the present invention, "multiple" means at least two, such as two, three, etc., unless otherwise clearly defined. In addition, unless otherwise clearly defined and defined, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] See also Figures 1 to 5 The utility model is a flue gas purification device with waste heat recovery technology and ion wind dust removal, including a waste heat recovery module 4 and an ion wind dust removal module 9. The flue gas inlet end of the waste heat recovery module 4 is provided with a valve 2 and an air compressor 3. The inlet of the valve 2 is provided with a filter 1, through which particles with larger diameters can be initially filtered. When the valve 2 is closed, high-pressure air is released from the air compressor 3 to achieve the self-cleaning effect of the flue gas pipeline. The ion wind dust removal module 9 is arranged at the flue gas outlet end of the waste heat recovery module 4. The waste heat recovery module can reduce the flue gas temperature, recover low-grade waste heat, and avoid the influence of high-temperature flue gas on the dust removal effect. In combination with the ion wind dust removal device, the content of particulate matter in the discharged flue gas can be effectively reduced. The utility model has a simple and compact structure and no working noise.

[0032] As an optional implementation, in some embodiments, a partition 401 is provided in the waste heat recovery module 4, and the two partitions and the outer shell are combined to form a fluid chamber for heat exchange, and a plurality of heat exchange fins 402 are provided between the two partitions. Holes are provided in the partition 401 and the heat exchange fins 402 to allow the flue gas duct 403 to pass through, and the holes in the partition 401 and the heat exchange fins 402 are adapted to the outer contour of the flue gas duct 403, so that the flue gas and the heat exchange fluid have a better heat exchange effect and the waste heat in the flue gas is recovered to a greater extent. The flue gas duct 403 and the dust collecting electrode achieve a self-cleaning effect through high-pressure air flushing. The use of an ion wind structure makes the dust removal module structure simple and compact, which solves the problem that the existing flue gas purification equipment lacks a waste heat recovery device, or the waste heat recovery device is separated from the flue gas purification equipment, resulting in a complex system and increased maintenance costs.

[0033] As an optional implementation, in some embodiments, the shell of the waste heat recovery module 4 is provided with a cold water inlet 6 and a hot water outlet 5, and the cold water inlet 6 and the hot water outlet 5 are arranged between the two partitions 401, arranged diagonally on opposite sides, and the flow direction of the heat exchange fluid and the flue gas is a countercurrent arrangement, ensuring that there is a sufficient temperature difference in the entire heat exchange process to ensure the power of heat transfer.

[0034] As an optional implementation, in some embodiments, a high-pressure air tank 7 is provided above the ion wind dust removal module 9, and a dust collecting box 8 is provided below the ion wind dust removal module 9.

[0035] As an optional embodiment, in some embodiments, the ion wind dust removal module 9 includes a serrated electrode 901, which is fixed on a guide rail slider 906. A guide pulley 905 is provided on the other side of the guide rail slider 906. The guide pulley 905 cooperates with a guide rail 904 fixed on the outer shell, so as to adjust the spacing between the serrated electrode 901 and the flat electrode 902 through the slide rail 904, thereby adjusting the voltage applied between the emitter and the dust collecting electrode to change the electric field strength to meet the dust removal requirements of flue gas with different particulate matter contents. The ion wind dust removal module 9 also includes a flat electrode 902, which is fixed to the outer shell by installing an angle code 904. The serrated electrode 901 and the flat electrode 902 are alternately arranged along the extension direction of the guide rail 904.

[0036] As an optional implementation, in some embodiments, the high-pressure air tank 7 is externally connected to a plurality of high-pressure air nozzles 701, and the high-pressure air nozzles 701 penetrate the outer shell and are arranged between two flat electrodes 902. The surface of the flat electrode is flushed with high-pressure air, so that the flue gas particles collected on the surface fall into the ash collecting box 8 below, thereby reducing the cost of manual cleaning and maintenance.

[0037] As an optional implementation, in some embodiments, the ash box 8 is connected to the bottom of the shell through an ash box slide rail 801, and a circular handle 802 is provided on the outer wall of the ash box 8 to facilitate the operation of the ash box 8 to open and close.

[0038] As an optional implementation, in some embodiments, the number of teeth included in the sawtooth electrode 901 is 4, and in the primary ion wind structure, the number of the planar electrodes 902 is 2.

[0039] As an optional implementation, in some embodiments, the ion wind dust removal module 9 has a two-stage ion wind structure, the first stage is composed of a sawtooth electrode 901 and two flat electrodes 902, and the second stage is composed of another sawtooth electrode 901 and two flat electrodes 902.

[0040] The working principle of this utility model:

[0041] When in use, first open the cold water inlet 6 and the hot water outlet 5, then open the valve through the valve handle 201 to allow the flue gas to enter the waste heat recovery module 4, the flue gas transfers its own heat to the heat exchange fluid through the flue gas duct 403 and the heat exchange fins 402, and then the cooled flue gas enters the ion wind dust removal module 9 through the air duct, and the particulate matter in the flue gas is ionized and negatively charged at the serrated electrode 901 connected to the negative pole, and is deposited on the flat electrode 902 connected to the anode under the action of the ion wind electric field force, and the purified flue gas is discharged into the atmosphere through the air duct. This method can reduce the influence of high-temperature flue gas on adsorption, thereby improving the dust removal efficiency, and the dust removal using the ion wind structure has the advantages of small size, low noise and low energy consumption.

[0042] In different usage scenarios, the position of the serrated electrode 901 fixed on the guide rail 904 can be adjusted by the built-in motor in the guide rail slider 906 to change its relative distance from the flat electrode 902. Different inter-pole spacings correspond to different starting voltages, breakdown voltages and electric field strengths in the ion wind dust removal device. This adjustment method can adapt to the dust removal needs of flue gas with different particulate matter contents. The appropriate electric field strength is determined by changing the inter-pole spacing, thereby improving the energy utilization efficiency of the device.

[0043] After the equipment has been working for a period of time, the valve handle 201 can be closed and the air compressor 3 can be started to spray high-pressure air into the flue gas duct 403 to clean the smoke particles accumulated therein. At the same time, the ion wind dust removal module 9 continues to work, and the cleaned smoke particles are adsorbed on the flat electrode 902. When the adsorption of particulate matter on the flat electrode 902 reaches a certain level, the high-pressure air sprayed by the high-pressure air nozzle 701 can then flush the smoke particles on the flat electrode 902, and the smoke particles fall into the ash collecting box 8 below. The ash collecting box 8 can then be taken out through the handle 802 to clean the collected smoke particles.

[0044] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0045] It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the utility model.

[0046] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0047] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are contradictory.

[0048] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable ordinary technicians in the field to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the essence of the content of the utility model should be included in the protection scope of the utility model.

Claims

1. A flue gas purification device for waste heat recovery and ion wind dust removal, characterized in that: include: A waste heat recovery module, wherein a valve and an air compressor are provided at the smoke inlet end of the waste heat recovery module, a filter is provided at the inlet of the valve, and an ion wind dust removal module is provided at the smoke outlet end of the waste heat recovery module.

2. The flue gas purification equipment for waste heat recovery and ion wind dust removal according to claim 1 is characterized in that: The waste heat recovery module includes a first shell and two partitions, the two partitions and the first shell together form a fluid chamber for heat exchange, a plurality of heat exchange fins are arranged between the two partitions, holes are arranged in the partitions and the heat exchange fins, a flue gas duct is passed through the holes, the holes in the partitions and the heat exchange fins are adapted to the outer contour of the flue gas duct, and the flue gas duct extends from the flue gas inlet of the waste heat recovery module to the flue gas outlet of the waste heat recovery module.

3. The flue gas purification equipment for waste heat recovery and ion wind dust removal according to claim 2 is characterized in that: The first shell is provided with a cold water inlet and a hot water outlet, and the cold water inlet and the hot water outlet are arranged between the two partitions and at diagonally opposite sides.

4. The flue gas purification equipment for waste heat recovery and ion wind dust removal according to claim 1 is characterized in that: A high-pressure air tank is arranged above the ion wind dust removal module, and a dust collecting box is arranged below the ion wind dust removal module.

5. The flue gas purification equipment for waste heat recovery and ion wind dust removal according to claim 4 is characterized in that: The ion wind dust removal module includes a second shell, a serrated electrode and a flat electrode, the serrated electrode and the flat electrode are arranged in the second shell, one side of the serrated electrode is fixed on a guide rail slider, the guide rail slider is provided with a guide rail pulley, the guide rail pulley slides in cooperation with the guide rail fixed on the second shell, and the flat electrode is fixed to the second shell by installing an angle code.

6. The flue gas purification equipment for waste heat recovery and ion wind dust removal according to claim 5 is characterized in that: The high-pressure air tank is externally connected with a plurality of high-pressure air nozzles, and the high-pressure air nozzles penetrate the second shell and are arranged between the two flat-plate electrodes.

7. The flue gas purification equipment for waste heat recovery and ion wind dust removal according to claim 5 is characterized in that: The ash collecting box is connected to the bottom of the second shell through an ash collecting box slide rail, and a circular ring handle is arranged on the outer wall of the ash collecting box.

8. The flue gas purification equipment for waste heat recovery and ion wind dust removal according to claim 5 is characterized in that: The sawtooth electrode has 2-4 teeth.

9. The flue gas purification equipment for waste heat recovery and ion wind dust removal according to claim 5 is characterized in that: The sawtooth electrodes and the flat plate electrodes are alternately arranged along the extending direction of the guide rail.

Images