An industrial tail gas washing device

Abstract

The present invention discloses an industrial tail gas cleaning device, which is applied to the purification treatment of industrial tail gas and relates to the field of industrial tail gas treatment equipment. The industrial tail gas cleaning device includes a cylindrical tower, a washing mechanism, a bath washing mechanism, a spraying mechanism and a cyclone mechanism. The cylindrical tower has a closed structure with a gas outlet, and the gas outlet is used for the purified industrial tail gas to flow out. The washing mechanism performs primary washing on the industrial tail gas. The bath washing mechanism is used to completely contact the industrial tail gas flowing out of the washing mechanism with the bath washing liquid for bath washing treatment. The spraying annular pipe is used to spray the industrial tail gas flowing out of the bath washing mechanism. The cyclone mechanism is used to remove dust and liquid in the industrial tail gas. An industrial tail gas cleaning device provided by the present invention integrates multiple industrial tail gas treatment mechanisms in a cylindrical tower, saves the occupied space of the equipment, improves the purification ability of the industrial tail gas, and improves the applicability of the equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of industrial tail gas treatment, and particularly to an industrial tail gas washing device. Background Art

[0002] During the industrial production process, a large amount of industrial tail gas will inevitably be generated. Industrial tail gas generally contains harmful substances such as toxic gases and dust. If it is directly discharged into the atmosphere without treatment, it will cause great pollution to the environment. The existing purification methods for industrial tail gas mainly include washing method, filtration method, sedimentation method, centrifugal separation method, etc. For industrial tail gas with complex components, especially industrial tail gas with coexisting harmful gases and dust substances, it is difficult to completely remove harmful substances by using a single purification method. Generally, a combined process of several purification methods is selected for series connection to achieve the final purification purpose, but it is prone to many drawbacks such as long process flow, large floor area of equipment, and high equipment investment cost. Summary of the Invention

[0003] The purpose of the present invention is to provide an industrial tail gas washing device to solve the problems of large equipment structure and high cost in industrial tail gas treatment by using multiple processes in the prior art.

[0004] To solve the above technical problems, the present invention adopts the following technical solutions:

[0005] An industrial tail gas washing device, comprising:

[0006] A cylindrical tower, a closed structure with a gas outlet for the purified industrial tail gas to flow out;

[0007] A washing mechanism, arranged inside the cylindrical tower, including a gas inlet pipe for the industrial tail gas to flow in, the gas inlet pipe extending out of the cylindrical tower, and the washing mechanism performing primary washing treatment on the industrial tail gas;

[0008] A bath washing mechanism, arranged at the bottom of the cylindrical tower, for completely contacting the industrial tail gas flowing out of the washing mechanism with the bath washing liquid for bath washing treatment;

[0009] A spray washing mechanism, including a plurality of spraying annular pipes fixed inside a swirl sleeve, the spraying annular pipes being placed above the bath washing mechanism, and the spraying annular pipes being used for spraying treatment on the industrial tail gas flowing out of the bath washing mechanism;

[0010] A swirl mechanism, fixed inside the cylindrical tower, placed above the spray washing mechanism, for removing dust and liquid in the industrial tail gas.

[0011] In an optional embodiment of the present application, the cylindrical tower includes a hollow cylinder body, a cover plate and a bottom plate, and the cover plate, the cylinder body and the bottom plate form a sealed structure with a hollow interior.

[0012] In an alternative embodiment of the present application, the washing mechanism includes a contraction tube with a cross-sectional area gradually decreasing from top to bottom, a necking tube with a constant cross-sectional area, and a diffuser tube with a cross-sectional area gradually increasing from top to bottom. The contraction tube, the necking tube, and the diffuser tube are connected in sequence. An inlet sleeve is connected to the upper part of the contraction tube. The gas inlet pipe is placed inside the inlet sleeve. An inlet top plate is provided at the upper part of the inlet sleeve, and the inlet top plate is used to seal the gap between the inlet sleeve and the gas inlet pipe. The inlet sleeve is fixed with a washing liquid inlet pipe, and the washing liquid inlet pipe extends from the outside of the inlet sleeve to the space between the inlet sleeve and the gas inlet pipe. The washing liquid inlet pipe is connected to a liquid inlet ring pipe, and the liquid inlet ring pipe is placed between the inlet sleeve and the gas inlet pipe and surrounds the gas inlet pipe. Liquid outlet ports are evenly distributed below the liquid inlet ring pipe.

[0013] In an alternative embodiment of the present application, a liquid distribution ring is fixed to the lower part of the inlet sleeve. The liquid distribution ring and the inlet sleeve form an annular channel with an upper opening. The liquid inlet ring pipe is placed directly above the liquid distribution ring, and the annular channel wraps the liquid outlet of the liquid inlet ring pipe. An overflow channel is formed between the liquid distribution ring and the gas inlet pipe.

[0014] In an alternative embodiment of the present application, the contraction tube, the necking tube, and the diffuser tube form a Venturi structure, and the cross-sections of the contraction tube, the necking tube, and the diffuser tube are rectangular or circular.

[0015] In an alternative embodiment of the present application, a connecting pipe is connected to the lower part of the diffuser tube. The lower part of the connecting pipe is fixed to the bottom plate, and a flow port is opened in the lower part of the connecting pipe. The bath washing mechanism includes a water bath outlet pipe fixed to the cylinder body. A water bath liquid is provided between the connecting pipe and the cylinder body. One end of the water bath outlet pipe is placed outside the cylinder body and connected to an external power mechanism, and the other end of the water bath outlet pipe is placed inside the cylinder body and the height of the water bath outlet pipe is lower than the height of the flow port.

[0016] In an alternative embodiment of the present application, the spray washing mechanism further includes a spraying liquid inlet pipe fixed to the cylinder body. One end of the spraying liquid inlet pipe is placed outside the cylinder body, and the other end of the spraying liquid inlet pipe is placed between the connecting pipe and the cylinder body. The spraying liquid inlet pipe is communicated with a spraying ring pipe, and a plurality of spraying ring pipes surround the connecting pipe and are evenly distributed along the same horizontal plane between the connecting pipe and the cylinder body.

[0017] In an alternative embodiment of the present application, the swirl mechanism includes a plurality of swirl plates, a swirl sleeve, and an annular plate. The annular plate is fixed to the inner side of the cylinder body, the swirl sleeve is fixed to the annular plate, and a liquid holding tank is formed between the swirl sleeve, the annular plate, and the cylinder body. The swirl plates are evenly distributed along the circumferential direction on the swirl sleeve, and a swirling air flow channel facing the cylinder body is formed between adjacent swirl plates. The cylinder body is provided with a collected liquid outlet and the collected liquid outlet is connected to the annular plate.

[0018] In an alternative embodiment of the present application, the gas outlet is placed above the swirl mechanism. The swirl mechanism further includes a liquid blocking ring fixed to the cylinder body. The liquid blocking ring surrounds the inner side of the cylinder body in a circle and is placed between the gas outlet and the annular plate.

[0019] In an alternative embodiment of the present application, the gas outlet is provided in the direction facing the swirling gas flow channel.

[0020] The beneficial effects of an industrial waste gas cleaning device disclosed by the present invention are as follows: The industrial waste gas enters the washing mechanism in the cylinder tower from the gas inlet, and the washing liquid in the washing mechanism is used to initially wash the industrial waste gas, preliminarily removing impurities and toxic gases in the industrial waste gas. The industrial waste gas flowing out of the washing mechanism enters the bath washing mechanism, where the industrial waste gas is in full contact with the bath washing liquid, and most of the toxic gases and impurities in the industrial waste gas are removed through the bath washing liquid. The industrial waste gas flowing out of the bath washing mechanism then enters the spray washing mechanism, and the spraying liquid is sprayed on the industrial waste gas through the spray washing mechanism, and the residual toxic gases in the industrial waste gas are removed through the spraying liquid. The industrial waste gas flowing out of the spray washing mechanism enters the swirling mechanism, where the dust and liquid in the industrial waste gas are removed, and the clean industrial waste gas finally exits from the gas outlet of the cylinder tower. By integrating the washing mechanism, the bath washing mechanism, the spray washing mechanism, and the swirling mechanism into the cylinder tower in this industrial waste gas cleaning device, a high degree of integration of multiple processes for industrial waste gas is achieved, improving the purification and treatment capacity of industrial waste gas. At the same time, the multi-process treatment structure is integrated into the cylinder tower, reducing the size of the device, facilitating the handling of the device, enhancing the adaptability of the device to the environment, and having high practical application and promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0022] Figure 1 is a schematic structural diagram of the industrial waste gas cleaning device of the present invention;

[0023] Figure 2 is a schematic structural diagram of the industrial waste gas cleaning device of the present invention in a second direction;

[0024] Figure 3 is a top view of the industrial waste gas cleaning device of the present invention;

[0025] Figure 4 is a sectional view of the industrial waste gas cleaning device of the present invention;

[0026] Figure 5 is an axonometric view of the sectional view of the industrial waste gas cleaning device of the present invention;

[0027] Figure 6 is an enlarged view of the A direction of the sectional view of the industrial waste gas cleaning device of the present invention;

[0028] Figure 7It is an enlarged view in the B direction of the cross-sectional view of the industrial tail gas cleaning equipment of the present invention.

[0029] Reference numerals in the drawings: 100, industrial tail gas cleaning equipment; 10, cylinder tower; 11, cylinder body; 12, cover plate; 13, bottom plate; 14, inlet sleeve; 15, inlet top plate; 16, gas outlet; 20, washing mechanism; 21, gas inlet pipe; 22, contraction pipe; 23, necking pipe; 24, diffuser pipe; 25, connecting pipe; 251, flow port; 26, washing liquid inlet pipe; 27, liquid inlet ring pipe; 28, liquid supplement ring; 281, annular channel; 282, overflow channel; 30, swirling mechanism; 31, ring plate; 32, swirling sleeve; 33, swirling plate; 331, swirling air flow channel; 34, liquid storage tank; 35, liquid blocking ring; 36, collected liquid outlet; 40, spray washing mechanism; 41, spraying liquid inlet pipe; 42, spraying ring pipe; 50, bath washing mechanism; 51, water bath outlet pipe; 52, upper communication port; 53, lower communication port; 54, liquid level gauge. Detailed implementation manners

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0031] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0032] The terms "first", "second", "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", "third" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and defined, the terms "connected", "installed", "connected", and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the connection inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in various forms and should not be construed as limited to the examples set forth herein; rather, these example embodiments are provided so that this disclosure will be more complete and comprehensive, and will fully convey the concept of the example embodiments to those skilled in the art. The drawings are only schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus their repeated description will be omitted.

[0035] The following Figures 1 - 7 will further elaborate in detail the preferred embodiments disclosed in the present invention in conjunction with the accompanying drawings of this specification.

[0036] Please refer to Figure 1 and Figure 5 In an embodiment of the present application, an industrial tail gas cleaning device 100 is provided. The industrial tail gas cleaning device 100 provided in the embodiment of the present application can be applied to the purification operation of industrial tail gas. After the industrial tail gas enters the washing mechanism 20 from the gas inlet pipe 21, it is initially washed by the washing liquid in the washing mechanism 20, then bath-washed by the bath-washing mechanism 50, then spray-washed by the spray-washing mechanism 40, and finally the dust and liquid are removed by the cyclone mechanism 30. The processing mechanisms of multiple processes are concentrated in one device, realizing the purification treatment of industrial tail gas with multiple processes in the same integrated device, improving the integration of the device, reducing the volume of the device, and enhancing the convenience and mobility of the device.

[0037] In an embodiment of the present application, please refer to Figures 1 - 5 The industrial tail gas cleaning device 100 includes a cylinder tower 10, a washing mechanism 20, a bath-washing mechanism 50, and a cyclone mechanism 30.

[0038] The cylinder tower 10 is a closed structure provided with a gas outlet 16, and the gas outlet 16 is used for the purified industrial tail gas to flow out;

[0039] The washing mechanism 20 is arranged in the cylinder tower 10, and includes a gas inlet pipe 21 for the inflow of industrial tail gas. The gas inlet pipe 21 extends out of the cylinder tower 10, and the washing mechanism 20 performs a preliminary washing treatment on the industrial tail gas. After the industrial tail gas enters the washing mechanism 20 in the cylinder tower 10 from the gas inlet pipe 21, the industrial tail gas is initially washed by the washing liquid in the washing mechanism 20 to remove some toxic gases and impurities in the industrial tail gas.

[0040] The washing mechanism 50 is arranged at the bottom of the column 10, and is used to completely contact the industrial tail gas flowing out of the washing mechanism 20 with the washing liquid for washing treatment. The industrial tail gas is fully contacted with the washing liquid in the washing mechanism 50, and the toxic gases and impurities in the industrial tail gas are purified after being fully contacted with the washing liquid.

[0041] The spraying mechanism 40 includes a plurality of spraying ring pipes 42 fixed in the cyclone sleeve 32. The spraying ring pipes 42 are placed above the bathing mechanism 50. The spraying ring pipes 42 are used to spray the industrial tail gas flowing out of the bathing mechanism 50. The industrial tail gas is further processed under the spraying treatment of the spraying mechanism 40, and the spraying mechanism 40 purifies the toxic gas remaining in the industrial tail gas.

[0042] The cyclone mechanism 30 is fixed in the cylinder tower 10 and placed above the spray washing mechanism 40 to remove dust and liquid from the industrial tail gas. The cyclone mechanism 30 mainly removes dust from the industrial tail gas and the residual liquid after being processed by the previous mechanism.

[0043] Please refer to Figure 4 The cylinder tower 10 includes a hollow cylinder 11, a cover plate 12 and a bottom plate 13, and the cover plate 12, the cylinder 11 and the bottom plate 13 form an internal hollow sealed structure. During the treatment of industrial tail gas, a closed space is required to prevent the industrial tail gas from flowing into the air during the treatment process. The hollow sealed structure formed by the cover plate 12, the cylinder 11 and the bottom plate 13 provides the treatment conditions for the industrial tail gas.

[0044] Please refer to Figure 4 , Figure 5 and Figure 6, the washing mechanism 20 includes a contraction tube 22 with a cross-sectional area gradually decreasing from top to bottom, a necking tube 23 with a constant cross-sectional area, and a diffuser tube 24 with a cross-sectional area gradually increasing from top to bottom. The contraction tube 22, the necking tube 23, and the diffuser tube 24 are connected in sequence. The upper part of the contraction tube 22 is connected with an inlet sleeve 14. The gas inlet pipe 21 is placed inside the inlet sleeve 14. The upper part of the inlet sleeve 14 is provided with an inlet top plate 15, and the inlet top plate 15 is used to seal the gap between the inlet sleeve 14 and the gas inlet pipe 21. The inlet sleeve 14 is fixed with a washing liquid inlet pipe 26, and the washing liquid inlet pipe 26 extends from the outside of the inlet sleeve 14 into the space between the inlet sleeve 14 and the gas inlet pipe 21. The washing liquid inlet pipe 26 is connected with a liquid inlet ring pipe 27. The liquid inlet ring pipe 27 is placed between the inlet sleeve 14 and the gas inlet pipe 21 and surrounds the gas inlet pipe 21. Liquid outlet ports are evenly distributed below the liquid inlet ring pipe 27.

[0045] Industrial tail gas enters the inlet contraction tube 22 from the gas inlet pipe 21. The cross-sectional area of the contraction tube 22 gradually decreases from top to bottom, resulting in an increase in the flow rate of the industrial tail gas after entering the contraction tube 22. After entering the necking tube 23, the flow rate of the industrial tail gas remains unchanged in the necking tube 23. After entering the diffuser tube 24 with a cross-sectional area gradually increasing from top to bottom, the flow rate of the industrial tail gas gradually decreases. The flow rate of the industrial tail gas in the contraction tube 22, the necking tube 23, and the diffuser tube 24 changes from increasing to unchanged and finally to decreasing, causing the industrial tail gas to form a high flow rate and generate negative pressure at the necking tube 23 part, generating an adsorption force. The configured washing liquid enters the liquid inlet ring pipe 27 from the washing liquid inlet pipe 26, and the washing liquid flows into the inner wall of the contraction tube 22 through the liquid outlet ports of the liquid inlet ring pipe 27, so that the inner walls of the contraction tube 22, the necking tube 23, and the diffuser tube 24 are filled with flowing washing liquid, and the washing liquid forms a washing liquid film on the inner walls of the contraction tube 22, the necking tube 23, and the diffuser tube 24. The industrial tail gas comes into full contact with the washing liquid after entering, and the adsorption force generated by the industrial tail gas is more conducive to adsorbing the washing liquid, so that the toxic gas in the industrial tail gas is purified by the washing liquid.

[0046] A liquid distribution ring 28 is fixed at the lower part of the inlet sleeve 14. The liquid distribution ring 28 and the inlet sleeve 14 form an annular channel 281 with an upper opening. The liquid inlet ring pipe 27 is placed directly above the liquid distribution ring 28, and the annular channel 281 wraps the liquid outlet ports of the liquid inlet ring. An overflow channel 282 is formed between the liquid distribution ring 28 and the gas inlet pipe 21. The washing liquid flowing out from the liquid outlet ports of the liquid inlet ring pipe 27 enters the annular channel 281. After the annular channel 281 is filled with liquid, the overflowing washing liquid flows into the contraction tube 22 through the overflow channel 282. The cooperation of the annular channel 281 and the overflow channel 282 makes the flow rate and flow volume of the washing liquid in all directions roughly the same, so that the washing liquid is more likely to form a washing liquid film in the contraction tube 22, and the washing liquid can better come into full contact with the industrial tail gas, enhancing the purification ability of the industrial tail gas.

[0047] The contraction tube 22, the necking tube 23 and the diffuser tube 24 form a Venturi structure. The cross-sections of the contraction tube 22, the necking tube 23 and the diffuser tube 24 are rectangular or circular. Among them, under the same volume, the circle has the largest contact area, maximizing the area of the washing liquid film and enabling better contact with the industrial waste gas. The Venturi structure can well form a negative pressure in the necking tube 23. The negative pressure has a strong adsorption force on the washing liquid film, which can better remove toxic gases and impurities from the industrial waste gas.

[0048] A connecting pipe 25 is connected to the lower part of the diffuser tube 24. The lower part of the connecting pipe 25 is fixed to the bottom plate 13. A flow port 251 is opened in the lower part of the connecting pipe 25. The bath washing mechanism 50 includes a water bath outlet pipe 51 fixed to the cylinder body 11. A water bath liquid is provided between the connecting pipe 25 and the cylinder body 11. One end of the water bath outlet pipe 51 is placed outside the cylinder body 11 and connected to an external power mechanism, and the other end of the water bath outlet pipe 51 is placed inside the cylinder body 11 and the height of the water bath outlet pipe 51 is lower than the height of the flow port 251.

[0049] The total area of the flow ports 251 is equal to the cross-sectional area of the connecting pipe 25. That is, within a unit time, the flow rates of the industrial waste gas in the connecting pipe 25 and the flow ports 251 are equal, enabling the industrial waste gas to have sufficient time for bath washing treatment after entering the bath washing mechanism 50.

[0050] An annular accommodation channel is formed between the connecting pipe 25 and the cylinder body 11. A water bath liquid is provided in the accommodation channel, and the liquid level of the water bath liquid submerges the flow port 251. The washing mechanism 20 is equivalent to a straw inserted into the water bath liquid. The industrial waste gas entering from the washing mechanism 20 enters the water bath liquid along the flow port 251 of the connecting pipe 25. The industrial waste gas fully contacts in the water bath liquid, and the toxic gases and impurities are fully absorbed, reacted and removed by the water bath liquid, thereby achieving the effect of removing toxic gases from the industrial waste gas. The water bath outlet pipe 51 is mainly used to control the liquid level of the water bath liquid. When the liquid level of the water bath liquid is too high, the water bath liquid is pumped away by providing power through an external mechanism, and the external mechanism can be equipment such as a water pump or a water extractor.

[0051] Please refer to Figure 2 and Figure 3 , the bath washing mechanism 50 further includes an upper connection port 52 and a lower connection port 53. Both the upper connection port 52 and the lower connection port 53 are opened on the cylinder body 11. The upper connection port 52 is placed above the lower connection port 53. The height of the lower connection port 53 is lower than the height of the flow port 251. The upper connection port 52 and the lower connection port 53 are connected to a liquid level gauge 54 on the outside of the cylinder body 11. The water bath liquid enters the liquid level gauge 54 through the lower connection port 53. A communicating vessel is formed between the cylinder body 11 and the liquid level gauge 54, and the liquid level height of the water bath liquid is directly displayed through the liquid level gauge 54 outside the cylinder tower 10, which is convenient for adjusting and controlling the liquid level height of the water bath liquid.

[0052] The spraying mechanism 40 further includes a spraying liquid inlet pipe 41 fixed to the cylinder body 11. One end of the spraying liquid inlet pipe 41 is placed outside the cylinder body 11, and the other end is placed between the connecting pipe 25 and the cylinder body 11. The spraying liquid inlet pipe 41 is communicated with the spraying ring pipe 42. A plurality of spraying ring pipes 42 surround the connecting pipe 25 and are evenly distributed along the same horizontal plane between the connecting pipe 25 and the cylinder body 11.

[0053] The spraying liquid inlet pipe 41 can also be used to supplement the water bath liquid of the bath washing mechanism 50. The spraying liquid enters the spraying ring pipe 42 through the spraying liquid inlet pipe 41, and then is sprayed through the spraying ring pipe 42. Nozzles are evenly arranged at the lower part of the spraying ring pipe 42. The nozzles formed by a plurality of spraying ring pipes 42 can cover the space between the entire cylinder body 11 and the washing mechanism 20, so that the industrial waste gas is washed by the spraying liquid to remove the residual toxic gas.

[0054] Please refer to Figure 4 、 Figure 5 and Figure 7 The swirling mechanism 30 includes a plurality of swirling plates 33, a swirling sleeve 32 and an annular plate 31. The annular plate 31 is fixed to the inner side of the cylinder body 11. The swirling sleeve 32 is fixed to the annular plate 31. A liquid storage tank 34 is formed between the swirling sleeve 32, the annular plate 31 and the cylinder body 11. The swirling plates 33 are evenly distributed along the circumferential direction of the swirling sleeve 32. A swirling air flow channel 331 facing the cylinder body 11 is formed between adjacent swirling plates 33. The cylinder body 11 is provided with a collected liquid outlet 36, and the collected liquid outlet 36 is connected to the annular plate 31.

[0055] The annular plate 31 serves to fix the swirling sleeve 32 to the cylinder body 11. At the same time, the annular plate 31 seals the gap between the swirling sleeve 32 and the cylinder body 11, so that the industrial waste gas can only flow into the swirling sleeve 32. The swirling plates 33 play a guiding role for the industrial waste gas. A plurality of swirling plates 33 evenly distributed on the swirling sleeve 32 form a swirling air flow channel 331 with the same orientation. The swirling air flow channel 331 is consistently oriented towards the cylinder body 11, that is, the industrial waste gas will continuously impact the cylinder body 11. A honeycomb structure is arranged above the swirling sleeve 32 of the cylinder body 11, which is more convenient for adsorbing the dust in the industrial waste gas. Moreover, when the industrial waste gas impacts the swirling plates 33, the swirling plates 33 also play a role in adsorbing dust and liquid while guiding. The liquid and dust accumulate and converge on the inner wall of the cylinder body 11, slide down due to their own gravity, fall onto the annular plate 31, and then flow to the collected liquid outlet 36 through the liquid storage tank 34. The liquid and dust flow out of the cylinder body 11 along the collected liquid outlet 36.

[0056] The washing liquid, the bath washing liquid and the spraying liquid can be treatment liquids with different components, and they will not react with each other. The washing liquid and the spraying liquid finally flow to the bath washing mechanism 50. The washing liquid and the spraying liquid are mixed with the bath washing liquid in the bath washing mechanism 50, and at the same time, the industrial waste gas is subjected to bath washing treatment to remove the toxic gas and impurities in the industrial waste gas.

[0057] The gas outlet 16 is disposed above the swirl mechanism 30. The swirl mechanism 30 further includes a liquid retaining ring 35 fixed to the cylinder body 11. The liquid retaining ring surrounds the inner side of the cylinder body 11 in a circle. The liquid retaining ring 35 is disposed between the gas outlet 16 and the ring plate 31. Liquid and dust remain on the inner wall of the cylinder body 11 and tend to rise under the blowing of the industrial tail gas. Through the liquid retaining ring 35, the liquid is collected and falls along the inner wall of the cylinder body 11 due to its own gravity.

[0058] The gas outlet 16 is arranged towards the swirl air flow channel 331. The orientation of the swirl air flow channel 331 is swirling upward. When the direction of the gas outlet 16 is the same as the orientation of the swirl air flow channel 331, it is convenient for the discharge of the industrial tail gas and can effectively reduce the air flow noise.

[0059] The beneficial effects of an industrial tail gas cleaning device 100 disclosed by the present invention are as follows: The industrial tail gas enters the washing mechanism 20 in the cylinder tower 10 from the gas inlet. The washing liquid in the washing mechanism 20 is used to initially wash the industrial tail gas to preliminarily remove impurities and toxic gases in the industrial tail gas. The industrial tail gas flowing out of the washing mechanism 20 enters the bath washing mechanism 50. The industrial tail gas fully contacts the bath washing liquid in the bath washing mechanism 50, and most of the toxic gases and impurities in the industrial tail gas are removed through the bath washing liquid. The industrial tail gas flowing out of the bath washing mechanism 50 then enters the spray washing mechanism 40. The spray washing mechanism 40 sprays the spraying liquid on the industrial tail gas, and the residual toxic gases in the industrial tail gas are removed through the spraying liquid. The industrial tail gas flowing out of the spray washing mechanism 40 enters the swirl mechanism 30. The dust and liquid in the industrial tail gas are removed through the swirl mechanism 30. The clean industrial tail gas is finally discharged from the gas outlet 16 of the cylinder tower 10. By integrating the washing mechanism 20, the bath washing mechanism 50, the spray washing mechanism 40, and the swirl mechanism 30 into the cylinder tower 10 in the industrial tail gas cleaning device 100, a high degree of integration of multiple processes of the industrial tail gas is achieved, the purification and treatment capacity of the industrial tail gas is improved. At the same time, the multi-process treatment structure is integrated into the cylinder tower 10, reducing the size of the device, facilitating the handling of the device, enhancing the adaptability of the device to the environment, and having high practical application and promotion value.

[0060] In the description of the above embodiments, specific features, structures, materials, or characteristics may be combined in a suitable manner in any one or more embodiments or examples.

[0061] Although the present disclosure has been described with reference to several exemplary embodiments, it should be understood that the terms used are illustrative and exemplary, rather than restrictive. Since the present disclosure can be embodied in many forms without departing from the spirit or essence of the invention, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be broadly construed within the spirit and scope defined by the appended claims. Therefore, all changes and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. An industrial tail gas washing device, characterized in that, Comprising: A cylindrical tower, a closed structure provided with a gas outlet for the purified industrial tail gas to flow out; A washing mechanism, arranged inside the cylindrical tower, including a gas inlet pipe for the industrial tail gas to flow in, the gas inlet pipe extending out of the cylindrical tower, and the washing mechanism performing a primary washing treatment on the industrial tail gas; A bath washing mechanism, arranged at the bottom of the cylindrical tower, for completely contacting the industrial tail gas flowing out of the washing mechanism with the bath washing liquid for bath washing treatment; A spray washing mechanism, including a plurality of spray ring pipes fixed inside a swirl sleeve, the spray ring pipes being placed above the bath washing mechanism, and the spray ring pipes being used for spraying the industrial tail gas flowing out of the bath washing mechanism; A swirl mechanism, fixed inside the cylindrical tower, placed above the spray washing mechanism, for removing dust and liquid in the industrial tail gas; The washing mechanism includes a contraction pipe with a cross-sectional area gradually decreasing from top to bottom, a necking pipe with a constant cross-sectional area, and a diffuser pipe with a cross-sectional area gradually increasing from top to bottom. The contraction pipe, the necking pipe, and the diffuser pipe are connected in sequence. An inlet sleeve is connected to the upper part of the contraction pipe. The gas inlet pipe is placed inside the inlet sleeve. An inlet top plate is arranged on the upper part of the inlet sleeve, and the inlet top plate is used for sealing the gap between the inlet sleeve and the gas inlet pipe. A washing liquid inlet pipe is fixed to the inlet sleeve. The washing liquid inlet pipe extends from the outside of the inlet sleeve to between the inlet sleeve and the gas inlet pipe. The washing liquid inlet pipe is connected with a liquid inlet ring pipe. The liquid inlet ring pipe is placed between the inlet sleeve and the gas inlet pipe and surrounds the gas inlet pipe. Liquid outlet openings are evenly distributed below the liquid inlet ring pipe; A communicating pipe is connected to the lower part of the diffuser pipe. The lower part of the communicating pipe is fixed to the bottom plate. A flow port is opened in the lower part of the communicating pipe. The bath washing mechanism includes a water bath outlet pipe fixed to the cylinder body. A water bath liquid is arranged between the communicating pipe and the cylinder body. One end of the water bath outlet pipe is placed outside the cylinder body and connected to an external power mechanism. The other end of the water bath outlet pipe is placed inside the cylinder body and the height of the water bath outlet pipe is lower than the height of the flow port; The spray washing mechanism further includes a spraying liquid inlet pipe fixed to the cylinder body. One end of the spraying liquid inlet pipe is placed outside the cylinder body. The other end of the spraying liquid inlet pipe is placed between the communicating pipe and the cylinder body. The spraying liquid inlet pipe is communicated with the spray ring pipes. The plurality of spray ring pipes surround the communicating pipe and are evenly distributed along the same horizontal plane between the communicating pipe and the cylinder body; The swirl mechanism includes a plurality of swirl plates, a swirl sleeve, and an annular plate. The annular plate is fixed to the inner side of the cylinder body. The swirl sleeve is fixed to the annular plate. A liquid storage tank is formed between the swirl sleeve, the annular plate, and the cylinder body. The swirl plates are evenly distributed along the circumferential direction in the swirl sleeve. A swirling air flow channel facing the cylinder body is formed between adjacent swirl plates. A liquid collection outlet is opened in the cylinder body and the liquid collection outlet is connected to the annular plate.

2. An industrial tail gas cleaning device according to claim 1, characterized in that, The cylindrical tower includes a hollow cylinder body, a cover plate, and a bottom plate. The cover plate, the cylinder body, and the bottom plate form a sealed structure with a hollow interior.

3. An industrial tail gas washing device according to claim 1, characterized in that, A liquid distribution ring is fixed to the lower part of the inlet sleeve. The liquid distribution ring and the inlet sleeve form an annular channel with an upper opening. The liquid inlet ring pipe is placed directly above the liquid distribution ring, and the annular channel wraps the liquid outlet openings of the liquid inlet ring pipe. An overflow channel is formed between the liquid distribution ring and the gas inlet pipe.

4. An industrial waste gas washing device according to claim 1, characterized in that, The contraction tube, necking tube and diffuser tube form a Venturi structure, and the cross-sections of the contraction tube, necking tube and diffuser tube are rectangular or circular.

5. An industrial tail gas washing device according to claim 1, characterized in that, The gas outlet is arranged above the swirling mechanism, and the swirling mechanism further includes a liquid baffle ring fixed to the cylinder body. The liquid baffle ring surrounds the inner side of the cylinder body in a circle, and the liquid baffle ring is arranged between the gas outlet and the ring plate.

6. An industrial tail gas washing device according to claim 1, characterized in that, The gas outlet is arranged towards the swirling air flow channel.

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