A smoke leakage prevention device for smoke exhaust outlet of coke oven
By designing a coke oven smoke exhaust outlet furnace leakage prevention device including a detection device, annular solution tank and a solution injector, the existing devices are easily damaged and leaked when dealing with high temperature and high-pressure furnace smoke, and efficient absorption and purification of furnace smoke is achieved, and emissions are ensured to meet the standards.
Patent Information
- Application Number
- CN202411979517.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2025-04-04
AI Technical Summary
When the existing furnace smoke leakage prevention device deals with high temperature, high pressure and strong corrosion furnace smoke, the sealing device is prone to damage, resulting in furnace smoke leakage and cannot effectively prevent the overflow of harmful gases.
A smoke-exhaust furnace smoke leakage prevention device for coke ovens is designed, including a smoke exhaust barrel and a pressurized pipe. The pressurized pipe is equipped with a detection device and an annular solution box. The outer side of the solution box is surrounded by an annular solution box. The solution ejector is distributed in the exhaust barrel in a circular array. When abnormalities are detected, the pressurized device increases the pressure. The absorbed liquid is sprayed through the injector to form a conical jet water film, forming a water film isolation wall to intercept and absorb the furnace smoke.
Effectively prevent the furnace smoke from being discharged from the booster pipe, and efficient absorption and purification of the furnace smoke through the injection of efficient absorbing liquid and the composition of the water film isolation wall, ensuring that the absorbed and purified furnace smoke can be discharged from the exhaust pipe in a timely manner, and the improper maintenance areas are determined through the visual window.
Smart Images
Figure CN119755997A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of coking furnaces, and more specifically to a smoke leakage prevention device at a smoke exhaust port of a coking furnace. Background Art
[0002] During the coking process of the coke oven, differences in coke quality, excessively fast feed speed or improper maintenance may cause incomplete combustion in the combustion chamber of the coke oven, resulting in the generation and overflow of harmful gases during the coking process, causing harm to the workers and causing air pollution. The existing furnace smoke leakage prevention device uses a sealing device to seal, process and discharge the furnace smoke, but the furnace smoke has the characteristics of high temperature, high pressure and strong corrosion, which makes the sealing device extremely easy to be damaged, thereby causing furnace smoke leakage. Summary of the invention
[0003] Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention provides a smoke leakage prevention device for a smoke exhaust port of a coking oven, which not only effectively prevents the smoke from being discharged from the pressurized pipe, but also efficiently absorbs the smoke located therein, and enables the absorbed and purified smoke to be discharged from the smoke exhaust pipe in a timely manner, and can also identify improperly maintained locations.
[0004] Technical solution: To achieve the above-mentioned purpose, a smoke leakage prevention device for a smoke exhaust port of a coking oven of the present invention comprises a smoke exhaust pipe and a pressurizing pipe, wherein the lower end of the smoke exhaust pipe is connected to the smoke exhaust end of a reaction chamber of the coking oven, the lower end of the pressurizing pipe is coaxially connected to the upper end of the smoke exhaust pipe, a detection device is arranged inside the upper end of the pressurizing pipe, an annular solution tank is sleeved on the outer side of the pressurizing pipe, a pressurizing device is arranged on the upper end of the annular solution tank, a plurality of solution injectors are connected to the lower end of the annular solution tank in a circular array, and the plurality of solution injectors are distributed in a circular array at the upper end of the inner cavity of the smoke exhaust pipe, when the detection device in the pressurizing pipe detects that the acid gas concentration in the pressurizing pipe exceeds the set value, the pressurizing device increases the pressure in the annular solution tank, and the absorption liquid in the annular solution tank is sprayed out from each solution injector.
[0005] Furthermore, the diameter of the boost pipe is smaller than the diameter of the smoke exhaust pipe, and a boost fan is coaxially arranged inside the upper end of the boost pipe. The boost fan is located below the detection device and also includes a motor capable of driving the boost fan.
[0006] Further, each solution injector comprises a conical jet cover, a columnar injection pipe and a liquid inlet pipe, the upper end of the liquid inlet pipe is connected to the lower end of the annular solution tank, the upper end of the conical jet cover is connected to the lower end of the liquid inlet pipe, the injection pipe is coaxially arranged at the center of the conical jet cover, the injection pipe extends along the axis of the conical jet cover to the lower end of the conical jet cover, and the lower end of the injection pipe is a hemispherical wall nozzle, a plurality of injection holes are evenly distributed on the hemispherical wall nozzle, and an annular jet port is provided at the lower edge of the conical jet cover, when the pressure device pressurizes the annular solution tank, the absorption liquid in the annular solution tank is ejected from the injection holes and the annular jet port of each solution injector, and the absorption liquid jet ejected from the annular jet port forms a conical jet water film;
[0007] The absorption liquid jets ejected from the annular jet outlets of a plurality of solution injectors distributed in a circular array form a plurality of conical jet water films distributed in a circular array. Any two adjacent conical jet water films among the plurality of conical jet water films distributed in a circular array are interlaced with each other, so that the plurality of conical jet water films distributed in the circular array are jointly spliced into a water film isolation wall, and the water film isolation wall separates the inner cavity of the smoke exhaust chimney into an upper and lower part.
[0008] Furthermore, the interior of the annular solution box is an annular solution warehouse, the conical jet hood includes a first conical wall and a second conical wall, the internal space of the first conical wall and the second conical wall is a conical annular spray chamber, the upper end of the liquid inlet pipe is connected to the annular solution warehouse, the liquid inlet pipe includes an outer annular wall and an inner annular wall arranged coaxially, a conical jet hood liquid inlet channel is formed between the outer annular wall and the inner annular wall, the inner annular cavity of the inner annular wall is the injection pipe liquid inlet channel, the injection pipe liquid inlet channel is connected to the injection pipe, and the conical jet hood liquid inlet channel is connected to the conical annular spray chamber.
[0009] Furthermore, the upper end contour of the first conical wall is coaxially connected to the lower end contour of the inner annular wall, the upper end contour of the second conical wall is coaxially connected to the lower end contour of the outer annular wall, the end of the first conical wall away from the inner annular wall and the end of the second conical wall away from the outer annular wall form an annular jet port, and the lower end of the conical ring-shaped liquid spray cavity is connected to the annular jet port along the contour.
[0010] Furthermore, a linkage shaft is coaxially connected to the bottom of the circular booster fan, and the linkage shaft extends downward along the axis of the circular booster fan to the interior of the smoke exhaust pipe.
[0011] Furthermore, the common intersection of the absorption liquid jets ejected from the annular jet ports of the solution ejectors distributed in a circular array to form a plurality of conical jet water films distributed in a circular array is located on the axis extension line of the linkage shaft; the lower end of the linkage shaft is exactly located at the height of the intersection.
[0012] Furthermore, a plurality of film-breaking plates are fixedly connected to the lower end of the linkage shaft in a circular array, and a plurality of mesh holes are distributed in an array on each film-breaking plate; when the circular boost fan rotates, the linkage shaft rotates with the film-breaking plates along with the circular boost fan, and the film-breaking plates break up the partial film surfaces of a plurality of conical jet water films located around the common intersection of a plurality of conical jet water films to form water mist, thereby forming a cylindrical airflow channel at the center of the water film isolation wall.
[0013] Furthermore, the upper end of the annular solution box is connected to a solution supply pipe, and the infusion end of the solution supply pipe is connected to the annular solution tank.
[0014] Furthermore, a working method of a smoke leakage prevention device for a smoke exhaust port of a coking furnace is provided. When an abnormality occurs in the combustion process in the combustion chamber of the coking furnace, a detection device in the boosting pipe detects that the pressure in the boosting pipe is abnormal, and the pressurizing device increases the pressure in the annular solution box. As the pressure in the annular solution box increases, the absorption liquid in the annular solution box is ejected from each solution injector. In this process, the absorption liquid jets ejected from the annular jet ports of a plurality of solution injectors distributed in a circular array form a plurality of conical jet water films distributed in a circular array and are simultaneously ejected toward a common intersection and the inner cavity wall of the smoke exhaust pipe. The conical jet water films formed by the absorption liquid jets ejected from the annular jet ports of each solution injector jointly constitute a water film isolation wall, which can absorb the smoke while simultaneously filtering out the smoke. The absorbing liquid ejected from the injection pipe of each solution injector can effectively absorb the fumes intercepted by the conical jet water film, and the conical jet water film formed by the absorbing liquid jet ejected from the annular jet port of each solution injector hits the inner wall of the smoke exhaust pipe, thereby forming absorbing liquid mist and effectively absorbing the fumes; the conical jet water film formed by the absorbing liquid jet ejected from the annular jet port of each solution injector toward the periphery of the common intersection hits the linkage shaft and the film breaking plate, and forms absorbing liquid mist under the impact of the film breaking plate, so that the fumes channel formed at the center of the water film isolation wall and the fumes flowing from the fumes channel to the pressurized pipe meet the emission standards under the absorption of the absorbing liquid mist formed under the impact of the film breaking plate, and are finally discharged from the pressurized pipe to the atmosphere.
[0015] Beneficial effects: The smoke leakage prevention device for a smoke exhaust port of a coking furnace of the present invention can seal the smoke on the lower side of the water film isolation wall by ejecting a plurality of conical jet water films distributed in a circular array from a plurality of solution injectors distributed in a circular array, thereby effectively preventing the smoke from being discharged from the booster pipe. The absorption liquid is turned into absorption liquid mist through a plurality of injection holes evenly distributed on the hemispherical wall-shaped nozzle of the injection pipe, thereby efficiently absorbing the smoke located on the lower side of the water film isolation wall. A smoke channel is formed at the center of the water film isolation wall by a scattering plate, so that the smoke after absorption and purification can be discharged from the smoke exhaust pipe in time, and the improperly maintained parts can be identified by the scale and the visualization window. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a structural schematic diagram of a smoke leakage prevention device for a smoke exhaust port of a coke oven according to the present invention;
[0017] Figure 2 It is the A-direction view;
[0018] Figure 3 It is a partial enlarged view B;
[0019] Figure 4 It is a partial enlarged view C;
[0020] Figure 5 It is a partial enlarged view D;
[0021] Figure 6 It is a partial enlarged view E;
[0022] Figure 7 This is a partial enlarged view F. DETAILED DESCRIPTION
[0023] The present invention will be further described below in conjunction with the accompanying drawings.
[0024] As attached Figure 1A smoke leakage prevention device for a smoke exhaust port of a coke oven comprises a smoke exhaust pipe 1 and a pressurizing pipe 3. The lower end of the smoke exhaust pipe 1 is connected to the smoke exhaust end of a coke oven reaction chamber, and the lower end of the pressurizing pipe 3 is connected to the upper end of the smoke exhaust pipe 1 coaxially. Under normal circumstances, the smoke in the smoke exhaust pipe 1 is discharged outward through the pressurizing pipe 3. A detection device 10 is arranged inside the upper end of the pressurizing pipe 3. An annular solution tank 4 is sleeved on the outer side of the pressurizing pipe 3. A pressurizing device 6 is arranged on the upper end of the annular solution tank 4, and the upper end of the annular solution tank 4 is connected to the upper end of the pressurizing pipe 3. An absorption liquid supply pipe 7 is connected, and the lower end of the annular solution tank 4 is connected to a plurality of solution injectors 13 in a circular array, and the plurality of solution injectors 13 are distributed in a circular array at the upper end of the inner cavity of the smoke exhaust chimney 1. When the detection device 10 in the booster pipe 3 detects that the acid gas concentration in the booster pipe 3 exceeds the set value, the pressurizing device 6 increases the pressure in the annular solution tank 4, and the absorption liquid in the annular solution tank 4 is ejected from each solution injector 13; thereby absorbing the furnace smoke containing acid gas in the smoke exhaust chimney 1.
[0025] like Figure 1 As shown, the diameter of the boost pipe 3 is smaller than the diameter of the smoke exhaust chimney 1, and a boost fan 8 is coaxially arranged inside the upper end of the boost pipe 3. The radius of the outer shell of the boost fan 8 is the same as the inner diameter of the boost pipe 3, and the outer shell of the boost fan 8 is fixedly connected to the inner wall of the boost pipe 3. The boost fan 8 is located below the detection device 10, and the upper part of the boost fan 8 also includes a motor 9 that can drive the boost fan 8. The motor 9 always drives the boost fan 8 to rotate, so that the gas in the boost pipe 3 can be quickly discharged from the boost pipe 3.
[0026] like Figure 4 As shown, each solution injector 13 includes a conical jet cover 16, a columnar jet pipe 17 and a liquid inlet pipe 23, the upper end of the liquid inlet pipe 23 is connected to the lower end of the annular solution tank 4, the upper end of the conical jet cover 16 is connected to the lower end of the liquid inlet pipe 23, the jet pipe 17 is coaxially arranged at the center of the conical jet cover 16, the jet pipe 17 extends along the axis of the conical jet cover 16 to the lower end of the conical jet cover 16, and the lower end of the jet pipe 17 is a hemispherical wall nozzle 30, and a plurality of jet holes 18 are evenly distributed on the hemispherical wall nozzle 30, and the plurality of jet holes 18 are uniformly distributed. The absorption liquid jet ejected from the annular solution tank 4 can effectively absorb the furnace smoke with acidic gas. The lower edge of the conical jet cover 16 is provided with an annular jet port 19. When the pressurizing device 6 pressurizes the annular solution tank 4, the absorption liquid in the annular solution tank 4 is ejected from the injection holes 18 of the solution injectors 13 and the annular jet port 19. The absorption liquid jet ejected from the annular jet port 19 forms a conical jet water film, and the absorption liquid jet ejected from the plurality of injection holes 18 can effectively absorb the furnace smoke with acidic gas gathered below the conical jet water film.
[0027] like Figure 2 and3 As shown, the absorption liquid jets ejected from the annular jet ports 19 of the solution injectors 13 arranged in a circular array form a plurality of conical jet water films arranged in a circular array. Any two adjacent conical jet water films in the plurality of conical jet water films arranged in a circular array are interlaced with each other, so that the plurality of conical jet water films arranged in a circular array are spliced together to form a water film partition wall. The maximum contour of the water film partition wall coincides with the contour of the inner wall of the smoke exhaust pipe 1. The water film partition wall divides the inner cavity of the smoke exhaust pipe 1 into upper and lower parts, and intercepts most of the furnace smoke in the inner cavity of the smoke exhaust pipe 1 in the lower part, preventing the furnace smoke from being discharged from the booster pipe 3. The polluted atmosphere is discharged. At this time, most of the smoke containing acidic gases in the smoke exhaust chimney 1 is gathered below the center of the water film isolation wall, and a small amount is distributed around the inner wall contour of the smoke exhaust chimney 1. When each conical jet water film collides with the inner wall contour of the smoke exhaust chimney 1, it can form an absorption liquid mist, thereby effectively absorbing the smoke containing acidic gases around the inner wall contour of the smoke exhaust chimney 1, and each conical jet water film will collide with each other, thereby forming a large amount of absorption liquid mist at the center of the water film isolation wall, thereby effectively absorbing the smoke containing acidic gases below the center of the water film isolation wall.
[0028] like Figure 6 As shown, the interior of the annular solution box 4 is an annular solution warehouse 5, the internal space of the conical jet cover 16 is a conical ring-shaped liquid spraying chamber 20, the upper end of the liquid inlet pipe 23 is connected to the annular solution warehouse 5, the conical jet cover 16 includes a first conical wall 28 and a second conical wall 29, the internal space of the first conical wall 26 and the second conical wall 27 is a conical ring-shaped liquid spraying chamber 20, the upper end of the liquid inlet pipe 23 is connected to the annular solution warehouse 5, and the upper end of the liquid inlet pipe 23 is provided with an electromagnetic control valve, the electromagnetic The magnetic control valve is in a closed state in the initial state. The liquid inlet pipe 23 includes an outer annular wall 26 and an inner annular wall 27 which are coaxially arranged. The upper end of the inner annular wall 27 is contracted inwardly. A conical jet hood liquid inlet channel 25 is formed between the outer annular wall 26 and the inner annular wall 27. The inner annular cavity of the inner annular wall 27 is the injection pipe liquid inlet channel 24. The injection pipe liquid inlet channel 24 is connected to the injection pipe 17. The conical jet hood liquid inlet channel 25 is connected to the conical annular injection cavity 20.
[0029] like Figure 7As shown, the upper end contour of the first conical wall 28 is coaxially connected to the lower end contour of the inner annular wall 27, the upper end contour of the second conical wall 29 is coaxially connected to the lower end contour of the outer annular wall 27, the end of the first conical wall 28 away from the inner annular wall 27 and the end of the second conical wall 29 away from the outer annular wall 26 form an annular jet port 19, and the lower end of the conical annular spray chamber 20 is connected to the annular jet port 19 along the contour; the cross-sectional area of the end of the conical annular spray chamber 20 close to the conical jet cover liquid inlet channel 25 is larger than the cross-sectional area of the end of the conical annular spray chamber 20 away from the conical jet cover liquid inlet channel 25, so that the flow rate of the absorption liquid supplied by the absorption liquid supply pipe 7 in the conical annular spray chamber 20 is gradually increased, ensuring that the absorption liquid finally ejected from the annular jet port 19 can form a conical jet water film.
[0030] like Figure 5 As shown, a linkage shaft 11 is coaxially connected to the bottom of the circular booster fan 8, and the linkage shaft 11 extends downward along the axis of the circular booster fan 8 to the interior of the smoke exhaust chimney 1; the common intersection 31 of a plurality of conical jet water films distributed in a circular array formed by the absorption liquid jets ejected from the annular jet ports 19 of a plurality of solution injectors 13 distributed in a circular array is located on the axis extension line of the linkage shaft 11; the lower end of the linkage shaft 11 is just located at the height of the intersection 31.
[0031] The lower end of the boost fan 8 is fixedly connected with a plurality of film-breaking plates 12 in a circular array, and a plurality of mesh holes 21 are distributed in an array on each film-breaking plate 12; when the circular boost fan 8 rotates, the linkage shaft 11 rotates with the film-breaking plates 12 together with the circular boost fan 8, and the film-breaking plates 22 break up the film surfaces of a plurality of conical jet water films located around the common intersection 31 of a plurality of conical jet water films to form water mist, thereby forming a cylindrical airflow channel at the center of the water film isolation wall. Under the action of each film-breaking plate 12, a large amount of absorption liquid water mist exists in the airflow channel. After the absorption liquid sprayed from a number of injection holes 18 evenly distributed on the hemispherical wall-shaped nozzle 30 at the lower end of the injection pipe 17 absorbs the furnace smoke containing acidic gas, the absorbed and purified furnace smoke flows to the booster pipe 3 through the air flow channel. The large amount of absorption liquid mist in the air flow channel can further absorb and purify the absorbed and purified furnace smoke, and can limit the flow rate of the furnace smoke, preventing the furnace smoke from flowing from the air flow channel to the booster pipe 3 too quickly, thereby causing the acidic gas in the furnace smoke to be discharged from the booster pipe 3 without being completely absorbed.
[0032] A working method of a smoke leakage prevention device for a smoke exhaust port of a coke oven. When an abnormality occurs in the combustion process in the combustion chamber of the coke oven, after the detection device 10 in the booster pipe 3 detects that the pressure in the booster pipe 3 is abnormal, the control system controls the electromagnetic control valve arranged at the upper end of the liquid inlet pipe 23 of the solution injector 13 to be converted into a connected state, and then the control system controls the start-up of the pressurizing device 6 to increase the pressure in the annular solution tank 4. As the pressure in the annular solution tank 4 increases, the absorption liquid in the annular solution tank 4 is ejected from each solution injector 13; in this process, the absorption liquid jets ejected from the annular jet ports 19 of the solution injectors 13 distributed in a circumferential array form a plurality of conical jet water films distributed in a circumferential array and are simultaneously ejected toward a common intersection 31 and the inner cavity wall of the smoke exhaust pipe 1, and the conical jet water films formed by the absorption liquid jets ejected from the annular jet ports 19 of each solution injector 13 together constitute a water film isolation. The water film isolation wall can intercept the furnace smoke while absorbing it, preventing the furnace smoke from flowing out of the boost pipe 3; the absorption liquid ejected from the injection pipe of each solution injector 13 can effectively absorb the furnace smoke intercepted by the conical jet water film, and the conical jet water film formed by the absorption liquid jet ejected from the annular jet port 19 of each solution injector 13 hits the inner wall of the smoke exhaust pipe 1, thereby forming absorption liquid mist and effectively absorbing the furnace smoke; the conical jet water film formed by the absorption liquid jet ejected from the annular jet port 19 of each solution injector 13 toward the periphery of the common intersection 31 hits the linkage shaft 11 and the film breaking plate 12, and forms absorption liquid mist under the impact of the film breaking plate 12, so that the furnace smoke channel formed at the center of the water film isolation wall, the furnace smoke flowing from the furnace smoke channel to the boost pipe 3 meets the emission standard under the absorption of the absorption liquid mist formed under the impact of the film breaking plate 12, and is finally discharged from the boost pipe 3 to the atmosphere.
[0033] like Figure 1As shown, a visualization window 23 is provided on the side wall of the annular solution tank 4, and a transparent sealing glass 24 with scale is sealed and installed on the visualization window 23. When the detection device 10 detects that the pressure in the boost pipe 3 is abnormal, the furnace smoke in the smoke exhaust pipe 1 is absorbed and discharged according to the above method. After the furnace smoke in the smoke exhaust pipe 1 is completely absorbed and discharged, the electromagnetic control valves arranged at the upper ends of the liquid inlet pipes 23 of each solution injector 13 of the control system are all in a closed state, and then the absorption liquid is injected into the annular solution tank 4 through the absorption liquid supply pipe 7 until the absorption liquid fills the entire annular solution tank 4. After waiting for a period of time, the change of the absorption liquid water level in the annular solution tank 4 is observed through the visualization window 23 on the annular solution tank 4. If at this time the absorption liquid water level in the annular solution tank 4 corresponds to the scale position on the scaled transparent sealing glass 24 which is the same as the scale position on the scaled transparent sealing glass 24 when the absorption liquid fills the entire annular solution tank 4, it means that the booster pipe 3 and the annular solution tank 4 are not damaged, and the maintenance personnel should mainly check the smoke exhaust chimney 1 and the coking oven reaction chamber. If at this time the absorption liquid water level in the annular solution tank 4 corresponds to the scale position on the scaled transparent sealing glass 24 which is lower than the scale position on the scaled transparent sealing glass 24 when the absorption liquid fills the entire annular solution tank 4, it means that the booster pipe 3 and the annular solution tank 4 are damaged, and the maintenance personnel should mainly check the booster pipe 3 and the annular solution tank 4.
[0034] The above are preferred embodiments of the present invention. It should be pointed out that a person skilled in the art may make several improvements and modifications without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the protection scope of the present invention.
Claims
1. A smoke leakage prevention device for a smoke exhaust port of a coke oven, characterized in that: The invention comprises a smoke exhaust pipe (1) and a pressurizing pipe (3), wherein the lower end of the smoke exhaust pipe (1) is connected to the smoke exhaust end of the furnace reaction chamber, the lower end of the pressurizing pipe (3) is connected to the upper end of the smoke exhaust pipe (1) coaxially, a detection device (10) is arranged inside the upper end of the pressurizing pipe (3), an annular solution box (4) is sleeved on the outer side of the pressurizing pipe (3), the upper end of the annular solution box (4) is connected to a pressurizing device (6), and the lower end of the annular solution box (4) is connected to the upper end of the annular solution box (4). The ends of the annular solution tank (4) are connected to a plurality of solution injectors (13) in a circumferential array, and the plurality of solution injectors (13) are distributed in a circumferential array at the upper end of the inner cavity of the smoke exhaust pipe (1). When the detection device (10) in the boosting pipeline (3) detects that the acid gas concentration in the boosting pipeline (3) exceeds a set value, the pressurizing device (6) increases the pressure in the annular solution tank (4), and the absorption liquid in the annular solution tank (4) is sprayed out from each solution injector (13).
2. The smoke leakage prevention device for a smoke exhaust port of a coke oven according to claim 1, characterized in that: The diameter of the boost pipe (3) is smaller than the diameter of the smoke exhaust pipe (1), and a boost fan (8) is coaxially arranged inside the upper end of the boost pipe (3). The boost fan (8) is located below the detection device (10) and also includes a motor (9) capable of driving the boost fan (8).
3. The smoke leakage prevention device for a smoke exhaust port of a coke oven according to claim 1, characterized in that: Each of the solution injectors (13) comprises a conical jet hood (16), a columnar jet pipe (17) and a liquid inlet pipe (23), wherein the upper end of the liquid inlet pipe (23) is connected to the lower end of the annular solution tank (4), the upper end of the conical jet hood (16) is connected to the lower end of the liquid inlet pipe (23), the jet pipe (17) is coaxially arranged at the center of the conical jet hood (16), the jet pipe (17) extends along the axis of the conical jet hood (16) to the lower end of the conical jet hood (16), and the jet pipe (17) ) has a hemispherical wall-shaped nozzle (30) at the lower end, and a plurality of injection holes (18) are evenly distributed on the hemispherical wall-shaped nozzle (30). The lower edge of the conical jet cover (16) is provided with an annular jet port (19). When the pressurizing device (6) applies pressure to the annular solution tank (4), the absorption liquid in the annular solution tank (4) is ejected from the injection holes (18) and the annular jet port (19) of each of the solution ejectors (13), and the absorption liquid jet ejected from the annular jet port (19) forms a conical jet water film; The absorption liquid jets ejected from the annular jet ports (19) of a plurality of solution injectors (13) distributed in a circular array form a plurality of conical jet water films distributed in a circular array. Any two adjacent conical jet water films in the plurality of conical jet water films distributed in a circular array are interlaced with each other, so that the plurality of conical jet water films distributed in a circular array are spliced together to form a water film isolation wall, and the water film isolation wall separates the inner cavity of the smoke exhaust pipe (1) into upper and lower parts.
4. The smoke leakage prevention device for a smoke exhaust port of a coke oven according to claim 1, characterized in that: The interior of the annular solution box (4) is an annular solution bin (5); the conical jet hood (16) comprises a first conical wall (28) and a second conical wall (29); the interior space of the first conical wall (26) and the second conical wall (27) is a conical annular liquid spraying chamber (20); the upper end of the liquid inlet pipe (23) is connected to the annular solution bin (5); the liquid inlet pipe (23) comprises an outer annular wall (26) and an inner annular wall (27) coaxially arranged; a conical jet hood liquid inlet channel (25) is formed between the outer annular wall (26) and the inner annular wall (27); the inner annular cavity of the inner annular wall (27) is a jet pipe liquid inlet channel (24); the jet pipe liquid inlet channel (24) is connected to the jet pipe (17); and the conical jet hood liquid inlet channel (25) is connected to the conical annular liquid spraying chamber (20).
5. The smoke leakage prevention device for a smoke exhaust port of a coke oven according to claim 4, characterized in that: The upper end contour of the first conical wall (28) is coaxially connected to the lower end contour of the inner annular wall (27), the upper end contour of the second conical wall (29) is coaxially connected to the lower end contour of the outer annular wall (27), an end of the first conical wall (28) away from the inner annular wall (27) and an end of the second conical wall (29) away from the outer annular wall (26) form an annular jet port (19), and the lower end of the conical annular liquid spray chamber (20) is connected to the annular jet port (19) along the contour.
6. The smoke leakage prevention device for a smoke exhaust port of a coke oven according to claim 2, characterized in that: A linkage shaft (11) is coaxially connected below the circular booster fan (8), and the linkage shaft (11) extends downward along the axis of the circular booster fan (8) to the interior of the smoke exhaust pipe (1).
7. The smoke leakage prevention device for a smoke exhaust port of a coke oven according to claim 3, characterized in that: The common intersection point (31) of the absorption liquid jets ejected from the annular jet ports (19) of the solution ejectors (13) arranged in a circumferential array to form a plurality of conical jet water films arranged in a circumferential array is located on the axis extension line of the linkage shaft (11); the lower end of the linkage shaft (11) is located exactly at the height of the intersection point.
8. The smoke leakage prevention device for a smoke exhaust port of a coke oven according to claim 6, characterized in that: The lower end of the linkage shaft (11) is fixedly connected to a plurality of film-breaking plates (12) in a circular array, and each of the film-breaking plates (12) is provided with a plurality of mesh holes (21) in an array; when the circular booster fan (8) rotates, the linkage shaft (11) rotates with the film-breaking plates (12) along with the circular booster fan (8), and the film-breaking plates (22) break up the film surfaces of a plurality of conical jet water films located around a common intersection point (31) of a plurality of conical jet water films to form water mist, thereby forming a cylindrical airflow channel at the center of the water film isolation wall.
9. The smoke leakage prevention device for a smoke exhaust port of a coke oven according to claim 1, characterized in that: The upper end of the annular solution box (4) is connected to a solution supply pipe (7), and the infusion end of the solution supply pipe (7) is connected to the annular solution tank (5).
10. The working method of the smoke leakage prevention device for a smoke exhaust port of a coke oven according to claim 1, characterized in that: When an abnormality occurs in the combustion process in the combustion chamber of the coke oven, the detection device (10) in the booster pipe (3) detects that the pressure in the booster pipe (3) is abnormal, and the pressurizing device (6) increases the pressure in the annular solution box (4). As the pressure in the annular solution box (4) increases, the absorption liquid in the annular solution box (4) is ejected from each solution injector (13); in this process, the absorption liquid jets ejected from the annular jet ports (19) of the solution injectors (13) distributed in a circular array form a plurality of conical jet water films distributed in a circular array and are simultaneously ejected toward a common intersection (31) and the inner cavity wall of the smoke exhaust pipe (1). The conical jet water films formed by the absorption liquid jets ejected from the annular jet ports (19) of each solution injector (13) together constitute a water film isolation wall. The water film isolation wall can intercept the smoke while absorbing it, thereby preventing the smoke from escaping from the smoke exhaust pipe (1). The absorbing liquid ejected from the injection pipe of each solution ejector (13) can effectively absorb the furnace smoke intercepted by the conical jet water film, and the conical jet water film formed by the absorbing liquid jet ejected from the annular jet port (19) of each solution ejector (13) hits the inner wall of the smoke exhaust pipe (1), thereby forming absorbing liquid mist and effectively absorbing the furnace smoke; the annular jet port (19) of each solution ejector (13) has a conical jet water film formed by the absorbing liquid jet. The conical jet water film formed by the absorption liquid jet directed toward the periphery of the common intersection (31) hits the linkage shaft (11) and the film-breaking plate (12), and forms absorption liquid water mist under the impact of the film-breaking plate (12), so that the furnace smoke channel formed at the center of the water film isolation wall and the furnace smoke flowing from the furnace smoke channel to the booster pipe (3) meet the emission standards under the absorption of the absorption liquid water mist formed under the impact of the film-breaking plate (12), and finally discharged into the atmosphere from the booster pipe (3).