Hemispherical chimney whitening device and smoke exhaust system

Abstract

The present invention discloses a hemispherical chimney de-whitening device and a smoke exhaust system. The de-whitening device includes a supporting component, a demisting device, and a driving device. The demisting device is in the shape of a hemispherical mesh and includes a plurality of demisting electrodes and a demisting electrode frame. The driving device includes a discharge electrode support on which a plurality of discharge electrodes are distributed. The wet flue gas in the chimney enters the de-whitening device, and the wet flue gas exchanges heat with the external ambient air and condenses to form droplets. The droplets are charged due to the adsorption of ionic charges and move radially under the action of the electric field force. When they move to the surface of the central de-whitening electrode, a liquid film is formed, which flows back to the chimney under the action of gravity, thereby capturing the droplets and further achieving chimney de-whitening. Finally, the water resources discharged from the chimney are recovered in a highly efficient and low-cost manner. The smoke exhaust system provided by the present invention can achieve the corresponding technical effects and will not be described in detail.

Description

Technical Field

[0001] The present invention relates to the technical field of smoke emission, in particular to a hemispherical chimney smoke elimination device and a smoke exhaust system comprising the hemispherical chimney smoke elimination device. Background Art

[0002] In the thermal power generation industry, as well as some other sectors, water resource utilization efficiency remains generally low, leaving considerable room for improvement. Actively implementing effective measures to improve comprehensive water utilization and conserve water is essential for the sustainable development of industrial society and enhancing market competitiveness, and is also crucial to the sustainable development of the entire economy and society.

[0003] At present, the chimneys of many industries often emit "white smoke". "White smoke" is actually water, and the emission of "white smoke" is actually a waste of water resources.

[0004] In addition to wasting resources, the "white smoke" also affects the visibility of surrounding residential areas and traffic roads, damaging the city's environment; in addition, it may cause the humidity in downwind areas to rise, and the plume falling to the ground will cause the road around the cooling tower to be slippery or icy, posing a great safety hazard to surrounding traffic, affecting the factory's safe production, and affecting the safe operation of production equipment around the cooling tower.

[0005] How to recycle water discharged from chimneys efficiently and at low cost is an issue that requires continuous research. Summary of the Invention

[0006] The purpose of the present invention is to provide a hemispherical chimney smoke removal device and a smoke exhaust system, which can complete smoke removal with high efficiency and low cost, and thus realize the recovery of water resources in the chimney.

[0007] To achieve the above-mentioned purpose, the present invention provides a hemispherical chimney whitening device, including a supporting component for supporting the outlet end of the chimney body, and a defogger and a driving device installed on the supporting component; the defogger is in the shape of a hemispherical mesh, including multiple defogger electrodes and a defogger electrode frame that connects each of the defogger electrodes into a mesh; the driving device includes a discharge electrode support in the shape of a hemispherical mesh, located below the defogger device, and the centers of the two spheres are located on the same vertical line, and multiple discharge electrodes are distributed on the discharge electrode support; each of the demisting electrodes and each of the discharge electrodes is respectively connected to the two poles of a high-voltage power supply.

[0008] Preferably, a plurality of defogger plate electrodes connected to the high-voltage power supply are further provided on the side of the defogger electrode frame facing away from the driving device. The defogger plate electrodes are strip-shaped and extend radially along the sphere.

[0009] Preferably, a demisting ball electrode connected to the high-voltage power supply is further provided on the outside of the demisting plate electrode. The demisting ball electrode is hemispherical and has a predetermined opening ratio.

[0010] Preferably, the demisting ball electrode has a porous plate, a mesh or a metal foam structure.

[0011] Preferably, the porosity of the demisting ball electrode ranges from 10% to 90%.

[0012] Preferably, the demisting electrode frame has a regular hexagonal mesh structure, and the discharge electrode is arranged corresponding to the center of the regular hexagon.

[0013] Preferably, the driving device is connected to the supporting component via an insulating support.

[0014] The present invention provides a smoke exhaust system, comprising a chimney body and a chimney whitening device connected to the outlet end of the chimney body, wherein the chimney whitening device is any of the hemispherical chimney whitening devices described above.

[0015] Wet flue gas from the chimney flows upward into the de-bleaching device. Due to the open-pore structure on the side of the de-bleaching system, the wet flue gas exchanges heat with the ambient air, condensing to form droplets. When the high-voltage power supply is turned on, a high-voltage electrostatic field is formed between the central discharge electrode and the central de-bleaching electrode. Simultaneously, the central discharge electrode experiences a tip discharge, generating a large amount of ionic charge. The droplets in the de-bleaching device become charged due to the adsorption of ionic charges. The high-voltage electrostatic field generates an electric field force perpendicular to the central de-bleaching electrode, causing the charged droplets to move radially under the action of this force. When they reach the surface of the central de-bleaching electrode, a liquid film forms. The liquid film then flows back to the chimney under the influence of gravity, thereby capturing the droplets and achieving chimney de-bleaching. Ultimately, water resources discharged from the chimney are recovered efficiently and cost-effectively.

[0016] The present invention provides a smoke exhaust system comprising a chimney body and a chimney whitening device connected to the chimney body outlet end; the chimney whitening device is any of the hemispherical chimney whitening devices described above. This smoke exhaust system can achieve the corresponding technical effects and will not be described in detail. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0018] Figure 1A schematic structural diagram of a smoke exhaust system provided in a specific embodiment of the present invention;

[0019] Figure 2 for Figure 1 A schematic structural diagram of a specific embodiment of a mid-hemispherical chimney smoke elimination device;

[0020] Figure 3 for Figure 2 A magnified schematic diagram of the local structure;

[0021] Figure 4 for Figure 1 A schematic structural diagram of another specific embodiment of a mid-hemispherical chimney smoke elimination device;

[0022] Figure 5 for Figure 4 A magnified schematic diagram of the local structure;

[0023] Figure 6 A schematic diagram of a specific structure of a demisting device;

[0024] Figure 7 A schematic diagram of another specific structure of a demisting device;

[0025] Figure 8 for Figure 7 Schematic diagram of the relative position relationship between the demisting device and the driving device.

[0026] Figures 1 to 8 The reference numerals in the figures are as follows:

[0027] 1-Chimney body, 2-Whitening device body, 2.1-Defogger, 2.1.1-Defogger electrode, 2.1.2-Defogger electrode frame, 2.1.3-Defogger plate electrode, 2.1.4-Defogger ball electrode; 2.2-Drive device, 2.2.1-Discharge electrode support, 2.2.2-Discharge electrode; 2.3-Insulation support, 2.4-High voltage power supply, 3-Support components. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] The core of the present invention is to provide a hemispherical chimney smoke elimination device and smoke exhaust system, which can complete smoke elimination with high efficiency and low cost, thereby realizing the recovery of water resources in the chimney.

[0030] Please refer to Figure 1-Figure 3 ; Figure 1 A schematic structural diagram of a smoke exhaust system provided in a specific embodiment of the present invention; Figure 2 for Figure 1 A schematic structural diagram of a specific embodiment of a mid-hemispherical chimney smoke elimination device; Figure 3 for Figure 2 A magnified schematic diagram of the local structure.

[0031] The smoke exhaust system provided by the present invention primarily comprises a chimney body 1, a smoke removal device body 2, and a support member 3 that supports the smoke removal device body 2 on the chimney body 1. The smoke removal device body 2 communicates with the outlet of the chimney body 1, allowing wet flue gas therein to pass through and complete the smoke removal process. The specific structure of the support member 3 is not critical to this application and is not detailed here, as reference is made to the prior art.

[0032] In a first specific embodiment, the main structure of the hemispherical chimney whitening device provided by the present invention is hemispherical. It should be noted that "hemispherical" refers to the overall visual form of the device, and reasonable deviations from a spherical shape in the geometric sense are permitted. Furthermore, "half" does not necessarily mean that the actual product is exactly half a sphere; a slightly larger or smaller half is also acceptable. This is the meaning of "hemispherical" described below.

[0033] The support member 3 supports the demisting device 2.1 and the driving device 2.2.

[0034] The demisting device 2.1 further comprises a plurality of demisting electrodes 2.1.1 and a demisting electrode frame 2.1.2 that connects the demisting electrodes 2.1.1 into a mesh. The demisting electrodes 2.1.1 can be made of corrosion-resistant metal, have an overall hemispherical shape, and have a certain porosity (e.g., 10% to 90%). They can be constructed using a porous plate, a mesh, or metal foam.

[0035] The demisting electrode frame 2.1.2 can also be made of corrosion-resistant metal, with a structure of rods, tubes, etc., crisscrossed and connected to the demisting electrode 2.1.1 to support it. The demisting electrode frame 2.1.2 is mounted on the support member 3, and then covers the upper part of the outlet end of the chimney body 1.

[0036] The driving device 2.2 includes a discharge electrode support 2.2.1 which is also hemispherical in shape and located directly below the defogger 2.1. The centers of the discharge electrode support 2.2.1 and the defogger 2.1 are generally located on the same vertical line, and the distance between the two should be reasonably set, usually less than or equal to 500mm.

[0037] The driving device 2.2 also includes a plurality of driving units arranged in a crisscross pattern, each of which includes a plurality of discharge electrodes 2.2.2. The discharge electrodes 2.2.2 are made of corrosion-resistant metal and are fixed to the discharge electrode support 2.2.1.

[0038] The driving device 2.2 can be installed on the supporting component 3 through the insulating support 2.3, and then covered at a position lower than the outlet end of the chimney body 1.

[0039] Each demisting electrode 2.1.1 and each discharge electrode 2.2.2 is connected to the two poles of a high voltage power supply 2.4 respectively.

[0040] Please refer to Figure 4 and Figure 5 , Figure 4 for Figure 1 A schematic structural diagram of another specific embodiment of a mid-hemispherical chimney smoke elimination device; Figure 5 for Figure 4 A magnified schematic diagram of the local structure.

[0041] In another specific embodiment, the structure of the demisting device 2.1 can be further improved based on the above solution.

[0042] A plurality of demisting plate electrodes 2.1.3 can be further provided on the side of the demisting electrode frame 2.1.2 facing away from the driving device 2.2. The demisting plate electrodes 2.1.3 can be made of corrosion-resistant metal and are generally strip-shaped, solid, and have no openings. The demisting plate electrodes 2.1.3 are also connected to the high-voltage power supply 2.4.

[0043] Demisting device 2.1 may also include a demisting ball electrode 2.1.4, located outside of demisting plate electrode 2.1.3. Demisting ball electrode 2.1.4 may be made of corrosion-resistant metal, have an overall hemispherical shape, and have a certain porosity (e.g., 10% to 90%). It may be constructed using a porous plate, mesh, metal foam, or bar structure. Demisting ball electrode 2.1.4 covers demisting plate electrode 2.1.3 from the outside and is also connected to high-voltage power supply 2.4.

[0044] Please refer to Figure 6-Figure 8 , Figure 6 A schematic diagram of a specific structure of a demisting device; Figure 7 A schematic diagram of another specific structure of a demisting device; Figure 8 for Figure 7 Schematic diagram of the relative position relationship between the demisting device and the driving device.

[0045] exist Figure 6 In the illustrated embodiment, the demisting electrode frame 2.1.2 of the demisting device 2.1 forms a square grid; Figure 7In the solution shown, the demisting electrode frame 2.1.2 of the demisting device 2.1 forms a regular hexagonal grid structure. Figure 8 As shown, the discharge electrode 2.2.2 can be set at the center position corresponding to the regular hexagonal mesh.

[0046] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0047] The above is a detailed introduction to the hemispherical chimney smoke elimination device and smoke exhaust system provided by the present invention. This article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only intended to help understand the method and core concept of the present invention. It should be noted that for those skilled in the art, various improvements and modifications can be made to the present invention without departing from the principles of the present invention, and such improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A hemispherical chimney whitening device, characterized in that: The invention comprises a support component (3) for supporting the outlet end of a chimney body (1), and a demisting device (2.1) and a driving device (2.2) installed on the support component (3); the demisting device (2.1) is in the shape of a hemispherical mesh, comprising a plurality of demisting electrodes (2.1.1) and a demisting electrode frame (2.1.2) connecting the demisting electrodes (2.1.1) into a mesh; the driving device (2.2) comprises a discharge electrode support (2.2.1) in the shape of a hemispherical mesh and located below the demisting device (2.1), with the centers of the two spheres located on the same vertical line, and a plurality of discharge electrodes (2.2.2) distributed on the discharge electrode support (2.2.1); each of the demisting electrodes (2.1.1) and each of the discharge electrodes (2.2.2) is respectively connected to the two poles of a high-voltage power supply (2.4); A plurality of demisting plate electrodes (2.1.3) connected to the high-voltage power supply (2.4) are further provided on the side of the demisting electrode frame (2.1.2) facing away from the driving device (2.2). The demisting plate electrodes (2.1.3) are strip-shaped and extend radially along the sphere. Demisting ball electrodes (2.1.4) connected to the high-voltage power supply (2.4) are further provided on the outside of the demisting plate electrodes (2.1.3). The demisting ball electrodes (2.1.4) are hemispherical and have a predetermined opening ratio.

2. The hemispherical chimney whitening device according to claim 1, characterized in that: The demisting ball electrode (2.1.4) has a porous plate, a mesh or a metal foam structure.

3. The hemispherical chimney whitening device according to claim 2, characterized in that: The opening rate of the demisting ball electrode (2.1.4) ranges from 10% to 90%.

4. The hemispherical chimney whitening device according to any one of claims 1 to 3, characterized in that: The demisting electrode frame (2.1.2) has a regular hexagonal mesh structure, and the discharge electrode (2.2.2) is arranged corresponding to the center of the regular hexagon.

5. The hemispherical chimney whitening device according to claim 4, characterized in that: The drive device (2.2) is connected to the support component (3) via an insulating support (2.3).

6. A smoke exhaust system, characterized in that: The invention comprises a chimney body (1) and a chimney whitening device connected to the outlet end of the chimney body (1), wherein the chimney whitening device is a hemispherical chimney whitening device according to any one of claims 1 to 5.

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