Cyclone water and dust removal tower and process waste gas treatment system

Abstract

The invention discloses a rotational flow water and dust removal tower and a process waste gas treatment system, belongs to the technical field of waste gas treatment, and solves the problem of blockage of the process waste gas treatment system caused by poor dust removal treatment effect on process waste gas by adopting a spraying mode in the prior art. The cyclone water and dust removal tower comprises an outer cylinder, a cyclone pipe and a porous cover, wherein the cyclone pipe and the porous cover are arranged in the outer cylinder; the projections of the gas inlet direction and the gas outlet direction of the cyclone pipe in the horizontal direction are inclined relative to the radial direction of the cyclone pipe, so that the flowing direction of the process waste gas in the cyclone pipe is from the gas inlet to the gas outlet. The method can be used for process waste gas treatment.

Description

Technical Field

[0001] The invention belongs to the technical field of waste gas treatment, and in particular relates to a cyclone water removal and dust removal tower and a process waste gas treatment system. Background Art

[0002] The existing process waste gas treatment system usually sets multiple spray heads above the water tank to spray the waste gas to achieve waste gas dust removal treatment. However, the spraying effect is not good, the dust content of the treated waste gas is high, and it is easy to clog the subsequent treatment units of the process waste gas treatment system. Summary of the invention

[0003] In view of the above analysis, the present invention aims to provide a cyclone water removal and dust removal tower and a process waste gas treatment system, which solves the problem in the prior art that the process waste gas dust removal treatment effect using a spraying method is poor, resulting in blockage of the process waste gas treatment system.

[0004] The purpose of the present invention is mainly achieved through the following technical solutions:

[0005] The present invention provides a cyclone water removal and dust removal tower, comprising an outer cylinder, a cyclone tube and a porous cover arranged in the outer cylinder; the horizontal projections of the air inlet direction and the air outlet direction of the cyclone tube are inclined relative to the radial direction of the cyclone tube, so that the flow direction of the process waste gas in the cyclone tube is cyclone from the air inlet to the air outlet.

[0006] Furthermore, the cyclone tube includes a cyclone cylinder and fins, the top of the cyclone cylinder air outlet end is closed; the porous cover is closed at the top and open at the bottom, and is sleeved on the top of the cyclone tube cylinder air outlet end, and the liquid outlets of the outer cylinder, cyclone tube and porous cover are all connected to the water tank of the process waste gas treatment system.

[0007] Furthermore, it also includes an air intake cyclone acceleration tube, through which the process exhaust gas flowing through the water tank is supplied into the cyclone tube; the air intake cyclone acceleration tube includes a reducing tube and an arc tube, the arc tube is sleeved on the outer wall of the cyclone tube with an air inlet, and along the flow direction of the process exhaust gas, the reducing tube, the arc tube and the air inlet of the cyclone tube are connected in sequence.

[0008] Furthermore, the swirl tube includes a swirl cylinder and fins, a long hole is axially opened at the top of the swirl cylinder, one side of the fin is fixedly connected to one side of the long hole, and the fin is inclined relative to the radial direction of the swirl cylinder.

[0009] Further, the bottom opening of the cyclone cylinder serves as the liquid outlet of the cyclone tube, and the opening is inserted below the liquid level of the water tank; and / or, the long holes on the cyclone cylinder are located above the vent holes of the porous cover.

[0010] Furthermore, the top of the cyclone cylinder is closed, and after the process waste gas flows into the cyclone cylinder, it flows out from the long strip hole at the upper end of the cyclone cylinder.

[0011] Furthermore, a plurality of vent holes are provided on the porous cover, and the plurality of vent holes are arranged in a plurality of circles; at least one circle of vent holes is arranged at the bottom end of the porous cover as the liquid outlet of the porous cover; and the remaining circles of vent holes are arranged on the side wall of the porous cover.

[0012] Furthermore, along the flow direction of the process exhaust gas, the inner diameter of the portion of the porous cover where the vent holes are opened gradually decreases.

[0013] Furthermore, the above-mentioned cyclone water removal and dust removal tower also includes a mounting ring, a support ring and connecting ribs, the support ring is located inside the mounting ring, the mounting ring is fixedly connected to the water tank, the support ring is fixedly connected to the outer tube, one end of the connecting rib is fixedly connected to the mounting ring, and the other end of the connecting rib is fixedly connected to the support ring; part of the mounting ring, part of the support ring and two adjacent connecting ribs constitute a fan-shaped through hole, which serves as the liquid outlet of the outer tube.

[0014] The present invention also provides a process waste gas treatment system, comprising a water tank and the above-mentioned cyclone water removal and dust removal tower which are sequentially connected along the process waste gas.

[0015] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0016] A) The cyclone water removal and dust removal tower provided by the present invention adopts a structure completely different from that of a spray tower, and utilizes a cyclone separation method to complete dehumidification while removing dust, and can perform multiple dust removal and dehumidification on the process waste gas, effectively improving the treatment effect of the process waste gas. At the same time, spray water is not used in the dust removal process, so that the humidity of the process waste gas will not be increased, thereby reducing the occurrence of blockage in the process waste gas treatment system.

[0017] B) The cyclone water removal and dust removal tower provided by the present invention has a cyclone tube in which the flow direction of the process waste gas is from the air inlet to the air outlet. During the cyclone process, under the action of centrifugation, some dust and water droplets in the process waste gas will collide with the tube wall of the cyclone tube, thereby separating the dust and liquid droplets from the process waste gas, and the dust and water droplets will flow back to the water tank under the action of their own gravity.

[0018] C) In the cyclone water removal and dust removal tower provided by the present invention, the process waste gas is supplied into the porous cover from the gas outlet of the cyclone tube. Since the projection of the gas outlet direction of the cyclone tube in the horizontal direction is inclined relative to the radial direction of the cyclone tube, the flow of the process waste gas in the porous cover is still a cyclone. Similarly, during the cyclone process, under the action of centrifugation, part of the dust and water droplets in the process waste gas will collide with the tube wall of the porous cover, thereby realizing the separation of dust and liquid droplets from the process waste gas, and the dust and water droplets will flow back to the water tank under the action of their own gravity.

[0019] D) In ​​the cyclone water removal and dust removal tower provided by the present invention, the process waste gas is supplied into the outer cylinder from the through hole of the porous cover and collides with the outer cylinder. The outer cylinder can effectively intercept the dust and water droplets in the process waste gas, and after hitting the wall, it flows back to the water tank under the action of gravity.

[0020] Other features and advantages of the present invention will be described in the following description, and part of them will become obvious from the description, or will be understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the written description and the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings are only for the purpose of illustrating particular embodiments and are not to be considered limiting of the present invention. Like reference symbols denote like components throughout the drawings.

[0022] Figure 1 A schematic diagram of the structure of a cyclone water removal and dust removal tower provided in Example 1 of the present invention;

[0023] Figure 2 A schematic diagram of the structure of a cyclone tube in a cyclone water removal and dust removal tower provided in Example 1 of the present invention;

[0024] Figure 3 A schematic diagram of the structure of a porous cover in a cyclone water removal and dust removal tower provided in Example 1 of the present invention;

[0025] Figure 4 A schematic diagram of the structure of an air inlet cyclone accelerating tube in a cyclone water removal and dust removal tower provided in Embodiment 1 of the present invention;

[0026] Figure 5 This is a schematic diagram of the structure of the process waste gas treatment system provided in Example 2 of the present invention.

[0027] Reference numerals:

[0028] 1-outer cylinder; 2-cyclone tube; 21-cyclone cylinder body; 22-fins; 23-long strip holes; 3-porous cover; 31-bottom vent holes; 32-side wall vent holes; 4-water tank; 41-baffle; 42-absorption chamber; 43-waste liquid reflux chamber; 5-intake cyclone acceleration tube; 51-reducing tube; 52-arc tube; 6-mounting ring; 7-support ring; 8-connecting ribs; 9-fan-shaped through holes. DETAILED DESCRIPTION

[0029] Preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the present invention and are used to explain the principles of the present invention together with the embodiments of the present invention.

[0030] Embodiment 1

[0031] This embodiment provides a cyclone water removal and dust removal tower, see Figure 1 , including an outer cylinder 1 and a cyclone tube 2 and a porous cover 3 arranged in the outer cylinder 1. The outer cylinder 1, the cyclone tube 2 and the porous cover 3 are coaxially arranged with a gap between the three. A plurality of vents are provided on the porous cover 3. The process waste gas flowing through the water tank 4 in the process waste gas treatment system is supplied to the cyclone tube 2. The projections of the air inlet direction of the cyclone tube 2 and the air outlet direction of the cyclone tube 2 in the horizontal direction are inclined relative to the radial direction of the cyclone tube 2, so that the flow direction of the process waste gas in the cyclone tube 2 is swirling from the air inlet to the air outlet. The porous cover 3 is sleeved on the outer wall of the cyclone tube 2 with the air outlet, and the liquid outlets of the outer cylinder 1, the cyclone tube 2 and the porous cover 3 are all connected with the water tank 4.

[0032] Compared with the prior art, the cyclone water removal and dust removal tower provided in this embodiment adopts a structure completely different from that of the spray tower. It uses cyclone separation to complete dehumidification while removing dust, and can perform multiple dust removal and dehumidification on the process waste gas, effectively improving the treatment effect of the process waste gas. At the same time, spray water is not used in the dust removal process, so that the humidity of the process waste gas will not be increased, thereby reducing the occurrence of blockage in the process waste gas treatment system.

[0033] Specifically, firstly, since the flow direction of the process exhaust gas in the cyclone tube 2 is from the air inlet to the air outlet, Figure 1 For example, the air inlet of the cyclone tube 2 is located at the bottom, and the air outlet is located at the top. The flow direction of the process exhaust gas is cyclone upward. During the cyclone process, under the action of centrifugation, some dust and water droplets in the process exhaust gas will collide with the tube wall of the cyclone tube 2, so as to separate the dust and liquid droplets from the process exhaust gas, and flow back to the water tank 4 under the action of the gravity of the dust and water droplets themselves, thus completing a dust removal and dehumidification. Then, the process exhaust gas that has undergone a dust removal and dehumidification is supplied to the porous cover 3 from the air outlet of the cyclone tube 2. Since the projection of the air outlet direction of the cyclone tube 2 in the horizontal direction is inclined relative to the radial direction of the cyclone tube 2, the flow of the process exhaust gas in the porous cover 3 is still a cyclone. Similarly, in the cyclone process, During the process, under the action of centrifugation, part of the dust and water droplets in the process waste gas will collide with the tube wall of the porous cover 3, so as to separate the dust and liquid droplets from the process waste gas, and flow back to the water tank 4 under the action of the gravity of the dust and water droplets themselves, completing the secondary dust removal and dehumidification; finally, the process waste gas after the secondary dust removal and dehumidification is supplied into the outer cylinder 1 from the through hole of the porous cover 3, and collides with the outer cylinder 1. The outer cylinder 1 can effectively intercept the dust and water droplets in the process waste gas, and flow back to the water tank 4 under the action of gravity after hitting the wall. At the same time, the process waste gas after the tertiary dust removal and dehumidification is discharged from the cyclone water removal and dust removal tower from the air outlet of the outer cylinder 1 under the action of negative pressure, and enters the next treatment unit of the process waste gas treatment system.

[0034] In order to smoothly introduce the process waste gas flowing through the water tank 4 into the cyclone tube 2 , the cyclone water removal and dust removal tower also includes an air intake cyclone acceleration tube 5 , through which the process waste gas flowing through the water tank 4 is supplied to the cyclone tube 2 .

[0035] It should be noted that, in combination with the specific structure of the water tank 4, a baffle 41 is provided in the water tank 4, and the baffle 41 divides the space above the liquid level of the water tank 4 into an absorption chamber 42 and a waste liquid reflux chamber 43. A connecting hole is opened on the baffle 41, and the connecting hole is located below the baffle 41. When the process waste gas treatment system is running, the connecting hole is at least partially located above the liquid level, that is, the connecting hole is used as a connecting port for the absorption chamber 42 and the waste liquid reflux chamber 43. The air inlet of the water tank 4 is located at the top of the absorption chamber 42, one end of the intake cyclone acceleration tube 5 is connected to the connecting hole, and the other end is connected to the air inlet of the cyclone tube 2.

[0036] Combined with the specific structure of the water tank 4, for the structure of the intake cyclone accelerating tube 5, see Figure 4 , including a reducing tube 51 and an arc tube 52, the arc tube 52 is sleeved on the outer wall of the cyclone tube 2 with the air inlet, along the flow direction of the process exhaust gas, the connecting hole, the reducing tube 51, the arc tube 52 and the air inlet of the cyclone tube 2 are connected in sequence. In this way, since the cross-sectional area of ​​the reducing tube 51 is gradually reduced, the flow velocity of the process exhaust gas will continue to increase in the process of flowing through the reducing tube 51, so that the process exhaust gas can be smoothly introduced into the air intake cyclone acceleration tube 5; after passing through the reducing tube 51, the process exhaust gas enters the arc tube 52, and the arc tube 52 can guide the process exhaust gas, so that the process exhaust gas moves along the circumferential direction of the arc tube 52, and finally supplied into the cyclone tube 2 through the air inlet of the cyclone tube 2, so as to realize the cyclone flow of the process exhaust gas upward.

[0037] Exemplarily, the taper of the reducing tube 51 is 55-80°, for example, 70°, the inner diameter of the arc tube 52 is 10-13 mm, for example, 11 mm, and the central angle of the arc tube 52 is 150-200°, for example, 180°.

[0038] In order to prevent the process exhaust gas from escaping from other gaps without passing through the intake cyclone accelerating tube 5, thereby affecting the dust removal and dehumidification effect, the intake end of the above-mentioned reduced diameter tube 51 completely covers the connecting hole.

[0039] Taking into account that the liquid level in the water tank 4 will affect the flow of process exhaust gas, the above-mentioned cyclone water removal and dust removal tower also includes a liquid level controller, a water tank inlet valve, a water tank outlet valve and a liquid level sensor for measuring the liquid level of the water tank 4. The liquid level sensor collects the water tank liquid level data in real time and sends it to the liquid level controller. If the water tank liquid level data is lower than the minimum threshold, the liquid level controller sends an increase opening signal to the water tank inlet valve and / or sends a decrease opening signal to the water tank outlet valve. The water inflow of the water tank 4 is greater than the water outflow of the water tank 4, thereby increasing the water tank liquid level data. If the water tank liquid level data is higher than the maximum threshold, the liquid level controller sends a decrease opening signal to the water tank inlet valve and / or sends an increase opening signal to the water tank outlet valve. The water inflow of the water tank 4 is less than the water outflow of the water tank 4, thereby decreasing the water tank liquid level data.

[0040] It should be noted that the minimum threshold is the level at which the liquid level of the water tank 4 is flush with the bottom surface of the air inlet end of the reduction tube 51, and the maximum threshold is the level at which the liquid level of the water tank 4 is flush with the top surface of the connecting hole. This is because, when the liquid level of the water tank 4 is lower than the bottom surface of the air inlet end of the reduction tube 51, the process waste gas may escape from the gap between the reduction tube 51 and the connecting hole, affecting the dust removal and dehumidification effect. When the liquid level of the water tank 4 is higher than the top surface of the connecting hole, it means that the connecting hole is completely blocked and cyclone dust removal and dehumidification cannot be performed. The liquid level of the water tank 4 is limited between the minimum threshold and the maximum threshold, and the liquid level of the water tank 4 is used to seal part of the gap between the reduction tube 51 and the connecting hole. This can reduce the escape of process waste gas and ensure the smooth flow of process waste gas, thereby effectively improving the dust removal and dehumidification effect.

[0041] For the structure of the cyclone tube 2, see Figure 2 It includes a cyclone body 21 and a fin 22. A long hole 23 is axially opened at the top of the cyclone body 21. One side of the fin 22 is fixedly connected to one side of the long hole 23. The fin 22 is inclined relative to the radial direction of the cyclone body 21. The bottom end opening of the cyclone body 21 serves as the liquid outlet of the cyclone tube 2. The opening is inserted under the liquid level of the water tank 4 to achieve liquid sealing, thereby preventing the process exhaust gas from directly flowing into the cyclone tube 2 without passing through the intake cyclone acceleration tube 5.

[0042] The number of the fins 22 and the number of the long holes 23 are both multiple, for example, 8, and the fins 22 correspond to the long holes 23 one by one. The radial inclination angles of the multiple fins 22 relative to the cyclone cylinder 21 are the same.

[0043] In order to ensure the swirl intensity in the porous cover 3, illustratively, the length of the fin 22 is 250-280 mm (for example, 260 mm), the width of the fin 22 is 25-35 mm (for example, 30 mm), and the opening angle of the fin 22 (that is, the tangent angle between the fin 22 and the swirl cylinder 21) is α, 0°<α<90° (for example, α=30°). It should be noted that the smaller the opening angle, the stronger the swirl effect, the stronger the centrifugal effect, and the more obvious the separation effect, but it will cause the loss of fluid pressure of the process exhaust gas.

[0044] In practical applications, the number of fins 22 and the long holes 23, the sizes of the fins 22 and the long holes 23, and the opening angle of the fins 22 can be adjusted according to actual conditions, which will not be described in detail here.

[0045] In order to extend the flow path of the process waste gas, the long holes 23 on the cyclone cylinder 21 are located above the vent holes of the porous cover 3, thereby forming a zigzag process waste gas flow path, further improving the dust removal and dehumidification effect of the process waste gas.

[0046] Taking into account the pressure loss of the process exhaust gas when it flows through the fins 22, in order to further increase the flow velocity of the process exhaust gas, the inner diameter of the cyclone cylinder 21 gradually decreases along the flow direction of the process exhaust gas. In other words, the cyclone cylinder 21 is a reducing cylinder, which increases the flow velocity of the process exhaust gas by reducing the diameter, thereby reducing the pressure loss of the process exhaust gas.

[0047] For the porous cover 3, from the perspective of dust removal and dehumidification effect and pressure loss, for example, see Figure 3 The size and arrangement parameters of the porous cover 3 and the vent holes thereon are as follows:

[0048] The diameter of the porous cover 3 is 180-250 mm (for example, 200 mm), and the size of the gap between the porous cover 3 and the cyclone tube 2 is 15-50 mm (for example, 30 mm).

[0049] Multiple air vents are evenly arranged, and the multiple air vents are arranged in multiple circles, wherein at least one circle is a bottom air vent 31, which is provided at the bottom end of the porous cover 3 and serves as a liquid outlet of the porous cover 3. Water droplets of the separated dust flow into the water tank 4 through the bottom air vent 31, and the remaining circles are side wall air vents 32. The number of circles of the side wall air vents 32 is 5 to 10 circles (for example, 8 circles), and the number of each circle of side wall air vents 32 and each circle of bottom air vents 31 is both 15 to 25 (for example, 21), and the diameters of the bottom air vents 31 and the side wall air vents 32 are both 15 to 25 mm (for example, 20 mm).

[0050] Similarly, taking into account the pressure loss of the process exhaust gas when it flows through the vent holes, in order to further increase the flow velocity of the process exhaust gas, the inner diameter of the part of the porous cover 3 where the vent holes are opened is gradually reduced along the flow direction of the process exhaust gas. The flow velocity of the process exhaust gas is increased by reducing the diameter, thereby reducing the pressure loss of the process exhaust gas.

[0051] In order to achieve stable installation of the cyclone water removal and dust removal tower, it also includes a mounting ring 6, a support ring 7 and a connecting rib 8, see Figure 1 , the support ring 7 is located in the mounting ring 6 and is coaxially arranged with the mounting ring 6, there is a gap between the support ring 7 and the mounting ring 6, the separated dust and water droplets flow into the water tank 4 through the gap, the mounting ring 6 is fixedly connected to the water tank 4, the support ring 7 is fixedly connected to the outer cylinder 1, so that a stable connection between the outer cylinder 1 and the water tank 4 can be achieved, one end of the connecting rib 8 is fixedly connected to the mounting ring 6, and the other end of the connecting rib 8 is fixedly connected to the support ring 7. Exemplarily, the number of connecting ribs 8 is 3 to 6 (for example, 4), part of the mounting ring 6, part of the support ring 7 and two adjacent connecting ribs 8 constitute a fan-shaped through hole 9 as a liquid outlet of the outer cylinder 1.

[0052] Embodiment 2

[0053] This embodiment provides a process waste gas treatment system, see Figure 5 , including a reaction chamber, a water tank 4 and a cyclone water removal and dust removal tower provided in Example 1, which are sequentially connected along the process exhaust gas.

[0054] Compared with the prior art, the beneficial effects of the process waste gas treatment system provided in this embodiment are substantially the same as the beneficial effects of the cyclone water removal and dust removal tower provided in the first embodiment, and are not described in detail here.

[0055] Based on the process waste gas treatment system of this embodiment, the process waste gas treatment method is as follows: the process waste gas is introduced into the reaction chamber, and the harmful process waste gas in the process waste gas undergoes thermal decomposition, so that the content of the harmful process waste gas is reduced, and the process waste gas discharged from the reaction chamber contains dust and process waste gas that is easily soluble in water; the process waste gas after the reaction passes through the absorption chamber 42 of the box body, and the water in the water tank 4 captures part of the dust and water-soluble components in the process waste gas after the reaction, and at the same time, the humidity of the process waste gas is increased; the process waste gas is absorbed by ... is The retracting cavity 42 is supplied to the reducing tube 51 through the connecting hole and flows in the reducing tube 51. The process waste gas with increased flow rate further flows into the arc tube 52 to form a swirling process waste gas. The swirling process waste gas enters the swirling cylinder 21 through the air inlet of the swirling cylinder 21 and swirls upward along the swirling cylinder 21. During the swirling process, under the centrifugal action, part of the dust and water droplets in the process waste gas will collide with the tube wall of the swirling cylinder 21, so that the dust and liquid droplets are separated from the process waste gas, and the dust and water droplets are separated by their own gravity. The process waste gas after the dust removal and dehumidification flows out from the long holes 23 of the cyclone cylinder 21, and is supplied to the porous cover 3 in a cyclone under the guidance of the fins 22. During the cyclone process, under the centrifugal action, part of the dust and water droplets in the process waste gas will collide with the tube wall of the porous cover 3, so as to separate the dust and liquid droplets from the process waste gas, and flow back to the water tank 4 through the bottom vent hole 31 under the action of the gravity of the dust and water droplets themselves. In the water tank 4, secondary dust removal and dehumidification are completed; the process waste gas that has undergone secondary dust removal and dehumidification is supplied into the outer cylinder 1 from the side wall vents 32 of the porous cover 3 and collides with the outer cylinder 1. The outer cylinder 1 can effectively intercept the dust and water droplets in the process waste gas, and after hitting the wall, it flows back to the water tank 4 through the fan-shaped through holes 9 under the action of gravity. At the same time, the process waste gas after the tertiary dust removal and dehumidification is discharged from the cyclone water removal and dust removal tower from the air outlet at the top of the outer cylinder 1 under the action of negative pressure, and enters the next treatment unit of the process waste gas treatment system.

[0056] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A cyclone water removal and dust removal tower, characterized in that: It includes an outer cylinder, a cyclone tube and a porous cover arranged in the outer cylinder; The horizontal projections of the air inlet direction and the air outlet direction of the cyclone tube are both inclined relative to the radial direction of the cyclone tube, so that the flow direction of the process exhaust gas in the cyclone tube is swirling from the air inlet to the air outlet.

2. The cyclone water removal and dust removal tower according to claim 1, characterized in that: The cyclone tube comprises a cyclone cylinder and fins, and the top of the cyclone cylinder gas outlet end is closed; The porous cover is open at the bottom and closed at the top, and is sleeved on the top of the gas outlet end of the cyclone tube body. The liquid outlets of the outer tube, the cyclone tube and the porous cover are all connected to the water tank of the process waste gas treatment system.

3. The cyclone water removal and dust removal tower according to claim 1, characterized in that: It also includes an air intake cyclone accelerating tube, through which the process exhaust gas flowing through the water tank is supplied into the cyclone tube; The inlet cyclone accelerating tube comprises a reducing tube and an arc tube. The arc tube is sleeved on the outer wall of the cyclone tube with an air inlet. Along the flow direction of the process exhaust gas, the reducing tube, the arc tube and the air inlet of the cyclone tube are connected in sequence.

4. The cyclone water removal and dust removal tower according to claim 1, characterized in that: The swirl tube comprises a swirl cylinder and fins. The top of the swirl cylinder is provided with an elongated hole along the axial direction. One side of the fin is fixedly connected to one side of the elongated hole. The fin is arranged to be inclined relative to the radial direction of the swirl cylinder.

5. The cyclone water removal and dust removal tower according to claim 4 is characterized in that: The bottom opening of the cyclone cylinder serves as the liquid outlet of the cyclone tube, and the opening is inserted below the liquid level of the water tank; And / or, the elongated holes on the cyclone cylinder are located above the vent holes of the porous cover.

6. The cyclone water removal and dust removal tower according to claim 4, characterized in that: The top of the cyclone cylinder is closed, and the process waste gas flows into the cyclone cylinder and then flows out from the long strip hole at the upper end of the cyclone cylinder.

7. The cyclone water removal and dust removal tower according to claim 1, characterized in that: A plurality of ventilation holes are provided on the porous cover, and the plurality of ventilation holes are arranged in a plurality of circles; At least one circle of vent holes is arranged at the bottom end of the porous cover, serving as a liquid outlet of the porous cover; The remaining ventilation holes are arranged on the side wall of the porous cover.

8. The cyclone water removal and dust removal tower according to claim 7, characterized in that: Along the flow direction of the process exhaust gas, the inner diameter of the portion of the porous cover where the vent holes are opened gradually decreases.

9. The cyclone water removal and dust removal tower according to claim 1, characterized in that: It also includes a mounting ring, a support ring and a connecting rib, wherein the support ring is located inside the mounting ring, the mounting ring is fixedly connected to the water tank, the support ring is fixedly connected to the outer cylinder, one end of the connecting rib is fixedly connected to the mounting ring, and the other end of the connecting rib is fixedly connected to the support ring; Part of the mounting ring, part of the supporting ring and two adjacent connecting ribs form a fan-shaped through hole, which serves as the liquid outlet of the outer cylinder.

10. A process waste gas treatment system, characterized in that: It comprises water tanks connected in sequence along the process exhaust gas and a cyclone water removal and dust removal tower as described in any one of claims 1 to 9.

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