Process waste gas treatment water tank, treatment system and dust removal method

Abstract

The present invention discloses a process waste gas treatment water tank, a treatment system and a dust removal method, which belongs to the field of waste gas treatment technology, and solves the problem that the process waste gas treatment system is blocked due to the poor dust removal effect of the process waste gas by spraying in the prior art. The water tank of the present invention includes an agitator, a process waste gas inlet pipe, a process waste gas outlet pipe, a box body and a cylinder body arranged in the box body, the process waste gas inlet pipe passes through the box body and is connected to the process waste gas inlet of the cylinder body, the process waste gas outlet pipe passes through the box body and is connected to the process waste gas outlet of the cylinder body, and the water in the box body at least immerses the cylinder body; the agitator is used to stir the water in the cylinder body, so that the water in the cylinder body swirls along the axial direction of the cylinder body, from the process waste gas inlet to the process waste gas outlet, and forms a negative pressure area between the process waste gas inlet and the process waste gas outlet. The present invention 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 process waste gas treatment water tank, a treatment system and a dust removal method. Background Art

[0002] The existing process waste gas treatment system usually has multiple spray heads above the water tank to spray the waste gas to achieve waste gas dust removal. 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. After the blockage, it is time-consuming and laborious to clean the process waste gas treatment device. Summary of the invention

[0003] In view of the above analysis, the present invention aims to provide a process waste gas treatment water tank, a treatment system and a dust removal method, which solves the problem that the process waste gas dust removal treatment effect using a spraying method in the prior art 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 process waste gas treatment water tank, comprising an agitator, a process waste gas inlet pipe, a process waste gas outlet pipe, a box body and a cylinder body arranged in the box body, the process waste gas inlet pipe penetrates the box body and is connected with the process waste gas inlet of the cylinder body, the process waste gas outlet pipe penetrates the box body and is connected with the process waste gas outlet of the cylinder body, and the water in the box body at least immerses the cylinder body; the agitator is used to stir the water in the cylinder body, so that the water in the cylinder body swirls along the axial direction of the cylinder body, from the process waste gas inlet to the process waste gas outlet, to form a Venturi effect, and a negative pressure area is formed between the process waste gas inlet and the process waste gas outlet, which serves as a flow channel for the process waste gas.

[0006] Furthermore, the above-mentioned process waste gas treatment water tank also includes a water supply unit, a water supply controller, a main controller and a liquid level sensor arranged in the tank body. The liquid level sensor detects the liquid level data in the tank body in real time and transmits it to the main controller. The main controller determines whether the liquid level data is lower than the liquid level threshold. If it is lower than the liquid level threshold, it sends a water supply increase signal to the water supply controller. The water supply controller increases the water supply of the water supply unit according to the water supply increase signal; the liquid level threshold is the liquid level data corresponding to when the water in the tank body reaches the upper end surface of the inner wall of the cylinder.

[0007] Furthermore, the process waste gas treatment water tank also includes a support baffle disposed in the box body, a support hole is provided on the support baffle, the cylinder is inserted into the support hole and fixedly connected to the hole wall of the support hole.

[0008] Furthermore, the support baffle divides the space in the box into a clean water chamber connected to the process waste gas inlet pipe and a sewage chamber connected to the process waste gas outlet pipe. The water supply unit is connected to the clean water chamber, and the drainage pipe of the box is connected to the sewage chamber.

[0009] Furthermore, the stirring end of the agitator is arranged in the clean water chamber, the water inlet end of the cylinder and the side wall of the clean water chamber have a clean water gap, and the water outlet end of the cylinder and the side wall of the dirty water chamber have a dirty water gap.

[0010] Furthermore, a through hole is provided on the supporting baffle, and the through hole is located below the cylinder.

[0011] Furthermore, the through hole is covered with a filter.

[0012] Furthermore, the process waste gas inlet pipe includes a reduced diameter pipe and a constant diameter pipe which are sequentially arranged along the flow direction of the process waste gas.

[0013] Furthermore, the agitator includes a drive motor, a mounting sleeve and a stirring blade. The drive motor is located outside the box body. The output shaft of the drive motor passes through the side wall of the box body and extends into the cylinder body. The mounting sleeve is arranged on the outer wall of the output shaft of the drive motor, and the stirring blade is fixedly connected to the mounting sleeve.

[0014] The present invention also provides a process waste gas treatment system, comprising a reaction chamber and a water tank which are sequentially connected along the process waste gas, and the water tank is the process waste gas treatment water tank.

[0015] Furthermore, the above-mentioned process waste gas treatment system also includes a dust removal and dehumidification tower; the dust removal and dehumidification tower includes a tower body and a guide pipe, a porous swirl pipe and a swirl guide plate arranged in the tower body, a guide hole is opened at the top of the guide pipe, one side of the swirl guide plate is fixedly connected to one side of the guide hole, the swirl guide plate is inclined relative to the radial direction of the guide pipe, and the porous swirl pipe is sleeved on the outer side of the guide pipe where the air outlet is provided.

[0016] The present invention also provides a method for removing dust from process waste gas, using the process waste gas treatment water tank, the method for removing dust comprises the following steps:

[0017] Step S1: supply water into the box until the cylinder is immersed in the water in the box;

[0018] Step S2: turning on the agitator to agitate the water in the cylinder so that the water in the cylinder swirls along the axial direction of the cylinder from the process exhaust gas inlet to the process exhaust gas outlet, generating a Venturi effect, and forming a flow channel for the process exhaust gas between the process exhaust gas inlet and the process exhaust gas outlet;

[0019] Step S3: Under the action of negative pressure, the process waste gas enters the flow channel of the cylinder, and the dust and soluble components in the process waste gas are contacted and mixed with water, so that the dust and soluble components are separated from the process waste gas, and the process waste gas after dust removal is discharged from the process waste gas outlet pipe.

[0020] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0021] A) The process waste gas treatment water tank provided by the present invention has a cylinder body arranged in the box body, the cylinder body is immersed in the water of the box body, the process waste gas inlet and the process waste gas outlet are liquid-sealed, and the water in the cylinder body is stirred by an agitator, so that the water in the cylinder body swirls at high speed along the axial direction of the cylinder body and from the process waste gas inlet to the process waste gas outlet, thereby generating a Venturi effect, forming a low-pressure area near the high-speed flowing fluid, thereby generating an adsorption effect, and forming a flow channel for the process waste gas between the process waste gas inlet and the process waste gas outlet. Under the action of negative pressure, the process waste gas enters the flow channel of the cylinder body, and the dust and soluble components in the process waste gas are fully contacted and mixed with the high-speed swirling water, thereby realizing the separation of dust and process waste gas, and the process waste gas is fully cooled, thereby effectively improving the dust removal efficiency and cooling effect of the process waste gas.

[0022] B) In the process waste gas treatment water tank provided by the present invention, the process waste gas is fully contacted and mixed with the high-speed swirling water, and the process waste gas has a good cooling effect, thereby greatly reducing the overall volume of the water tank.

[0023] C) The process waste gas treatment water tank provided by the present invention has a support baffle that divides the space in the box into a clean water chamber connected to the process waste gas inlet pipe and a sewage chamber connected to the process waste gas outlet pipe. The water supply unit is connected to the clean water chamber, and the drainage pipe of the box is connected to the sewage chamber. In this way, the particles in the sewage chamber are prevented from flowing back into the clean water chamber by setting the support baffle and the filter screen. Under the continuous stirring action of the agitator, the water that passes through the cylinder to the sewage chamber flows back to the clean water chamber through the through hole, and the water in the water tank circulates to continuously remove dust. This water tank not only has high dust removal efficiency, but also saves precious water resources.

[0024] D) In ​​the process waste gas treatment system provided by the present invention, the dust removal and dehumidification tower adopts a structure completely different from the spray tower, and uses a cyclone separation method to complete dehumidification while removing dust, and can perform dust removal and dehumidification on the process waste gas multiple times, 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.

[0025] 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

[0026] The accompanying drawings are only used for the purpose of illustrating specific embodiments and are not to be considered as limiting the present invention. In the entire drawings, the same reference symbols represent the same components;

[0027] Figure 1 A schematic diagram of the structure of a process waste gas treatment water tank provided in Embodiment 1 of the present invention;

[0028] Figure 2 A schematic diagram of the structure of a process waste gas treatment system provided in Embodiment 2 of the present invention;

[0029] Figure 3 A schematic diagram of the structure of a dust removal and dehumidification tower in a process waste gas treatment system provided in Example 2 of the present invention;

[0030] Figure 4 This is a schematic diagram of the structure of the guide pipe, swirl guide vanes and guide holes in the process waste gas treatment system provided in Example 2 of the present invention.

[0031] Reference numerals:

[0032] 1-tower body; 2-guide pipe; 3-porous cyclone pipe; 4-cyclone guide plate; 5-guide hole; 6-outer ring; 7-inner ring; 8-connecting strip; 9-process waste gas inlet pipe; 91-reducing pipe; 92-constant diameter pipe; 10-process waste gas outlet pipe; 11-box; 111-clean water chamber; 112-sewage chamber; 12-cylinder; 13-liquid level sensor; 14-support baffle; 15-through hole; 16-drive motor; 17-mounting sleeve; 18-agitation blade. DETAILED DESCRIPTION

[0033] 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.

[0034] Embodiment 1: This embodiment provides a process waste gas treatment water tank, see Figure 1 , including an agitator, a process waste gas inlet pipe 9, a process waste gas outlet pipe 10, a box body 11 and a cylinder body 12 arranged in the box body 11. The process waste gas inlet pipe 9 passes through the box body 11 and is connected with the process waste gas inlet port of the cylinder body 12. The process waste gas outlet pipe 10 passes through the box body 11 and is connected with the process waste gas outlet port of the cylinder body 12. The water in the box body 11 at least immerses the cylinder body 12, and the agitator is used to stir the water in the cylinder body 12.

[0035] Compared with the prior art, the process waste gas treatment water tank provided in the present embodiment has a cylinder 12 arranged in a box body 11, and the cylinder 12 is immersed in the water of the box body 11, and the process waste gas inlet and the process waste gas outlet are liquid-sealed, and the water in the cylinder 12 is stirred by an agitator, so that the water in the cylinder 12 swirls at high speed along the axial direction of the cylinder 12, from the process waste gas inlet to the process waste gas outlet, thereby generating a Venturi effect, and forming a low-pressure area near the high-speed flowing fluid, thereby generating an adsorption effect, and forming a flow channel for the process waste gas between the process waste gas inlet and the process waste gas outlet, and the process waste gas enters the flow channel of the cylinder 12 under the action of negative pressure, and the dust and soluble components in the process waste gas are fully contacted and mixed with the high-speed swirling water, so as to achieve separation of dust and process waste gas, and the process waste gas is fully cooled, thereby effectively improving the dust removal and cooling effects of the process waste gas.

[0036] In addition, in the process waste gas treatment water tank, the dust and soluble components in the process waste gas are fully contacted and mixed with the high-speed swirling water, the dust treatment efficiency is high, and the cooling effect on the process waste gas is good, thereby greatly reducing the overall volume of the water tank.

[0037] In order to ensure the treatment efficiency of process waste gas, the dimensions of the cylinder 12 are as follows: the diameter of the cylinder 12 is 180-230 mm (eg, 200 mm), and the length is 650-750 mm (eg, 700 mm).

[0038] In order to ensure that the water in the box body 11 can always immerse the cylinder body 12, the above-mentioned process waste gas treatment water tank also includes a water supply unit, a water supply controller, a main controller and a liquid level sensor 13 arranged in the box body 11. The liquid level sensor 13 detects the liquid level data in the box body 11 in real time and transmits it to the main controller. The main controller determines whether the liquid level data is lower than the liquid level threshold. The liquid level threshold is the liquid level data corresponding to when the water in the box body 11 reaches the upper end surface of the inner wall of the cylinder body 12. If it is lower than the liquid level threshold, a water supply increase signal is sent to the water supply controller, and the water supply controller increases the water supply of the water supply unit according to the water supply increase signal.

[0039] In order to achieve stable installation of the cylinder 12, the above-mentioned process waste gas treatment water tank also includes a support baffle 14 arranged in the box body 11, and a support hole is opened on the support baffle 14. The cylinder 12 is inserted into the support hole and fixedly connected to the hole wall of the support hole, so that stable installation of the cylinder 12 can be achieved.

[0040] The support baffle 14 divides the space in the box body 11 into a clean water chamber 111 connected to the process waste gas inlet pipe 9 and a sewage chamber 112 connected to the process waste gas outlet pipe 10. The water supply unit is connected to the clean water chamber 111, and the drainage pipe of the box body 11 is connected to the sewage chamber 112. In this way, through the setting of the support baffle 14, the clean water chamber 111 and the sewage chamber 112 can be isolated to prevent dirty water that has been in contact with the process waste gas from polluting the clean water chamber 111.

[0041] It can be understood that in order to ensure that the water in the cylinder 12 is always in a relatively clean state, the stirring end of the agitator is arranged in the clean water chamber 111, the water inlet end of the cylinder 12 and the side wall of the clean water chamber 111 have a clean water gap, the water outlet end of the cylinder 12 and the side wall of the sewage chamber 112 have a dirty water gap, the water supply unit, the clean water chamber 111, the clean water gap, the cylinder 12, the dirty water gap, the sewage chamber 112 and the drain pipe are connected in sequence to form a water flow path, ensuring that the water in the cylinder 12 is always in a relatively clean state.

[0042] In order to prevent dust in the water from accumulating at the bottom of the sewage chamber 112, a through hole 15 is provided on the support baffle 14, and the through hole 15 is located below the cylinder 12. Preferably, the through hole 15 is located at the lower end of the support baffle 14 and at the connection between the support baffle 14 and the lower wall of the box body 11. In this way, part of the water can be directly supplied from the clean water chamber 111 into the sewage chamber 112 through the through hole 15 to flush the bottom of the sewage chamber 112, thereby preventing dust in the water from accumulating at the bottom of the sewage chamber 112.

[0043] In order to prevent the particles in the sewage chamber 112 from flowing back to the clean water chamber 111, the filter screen is covered on the through hole 15. By setting the support baffle 14 and the filter screen, the filter screen filters the particles in the sewage chamber 112, which can prevent the particles in the sewage chamber 112 from flowing back to the clean water chamber 111. Under the continuous stirring action of the agitator, the water that passes through the cylinder 12 to the sewage chamber 112 flows back to the clean water chamber 111 through the through hole, and the water in the water tank circulates and continuously removes dust. This water tank not only has high dust removal efficiency, but also saves precious water resources.

[0044] In order to promote the process waste gas to enter the cylinder 12, the structure of the process waste gas inlet pipe 9, specifically, includes a reducing pipe 91 and a constant diameter pipe 92 which are arranged in sequence along the flow direction of the process waste gas. The setting of the reducing pipe 91 can reduce the flow velocity loss of the process waste gas, effectively increase the flow velocity of the process waste gas, and promote its entry into the cylinder 12. The setting of the constant diameter pipe 92 has the effect of stabilizing the flow.

[0045] Exemplarily, the taper of the reducing tube 91 is 50-75° (eg, 60°), the diameter of the small end is 80-120 mm (eg, 100 mm), and the diameter of the large end is 240-280 mm (eg, 260 mm).

[0046] As for the structure of the agitator, specifically, it includes a drive motor 16, a mounting sleeve 17 and a stirring blade 18. The drive motor 16 is located outside the box body 11. The output shaft of the drive motor 16 passes through the side wall of the box body 11 and extends into the cylinder body 12. The mounting sleeve 17 is sleeved on the outer wall of the output shaft of the drive motor 16, and the stirring blade 18 is fixedly connected to the mounting sleeve 17.

[0047] In order to provide sufficient stirring force, for example, the number of stirring blades 18 is 3 to 6, the rotation speed of the driving motor 16 is 400 to 600 rpm, the angle between the plane of the stirring blade 18 and the mounting sleeve 17 is 30 to 60°, the length of the stirring blade 18 is 70 to 90 mm, and the width is 60 to 70 mm.

[0048] Taking four stirring blades 18 as an example, the rotation speed of the driving motor 16 is 500 rpm, the angle between the plane of the stirring blade 18 and the mounting sleeve 17 is 45°, the length of the stirring blade 18 is 80 mm, and the width is 65 mm.

[0049] Embodiment 2: This embodiment provides a process waste gas treatment system, see Figure 2 , including a reaction chamber and a water tank connected in sequence along the process waste gas, and the water tank is the process waste gas treatment water tank provided in Example 1.

[0050] Compared with the prior art, the beneficial effects of the process waste gas treatment system provided in this embodiment are basically the same as the beneficial effects of the process waste gas treatment water tank provided in Example 1, and are not described in detail here.

[0051] In order to further perform dust removal and dehumidification treatment on the process waste gas discharged from the process waste gas treatment water tank, the process waste gas system further includes a dust removal and dehumidification tower.

[0052] For the structure of the dust removal and dehumidification tower, see Figure 3 to Figure 4 It includes a tower body 1 and a guide tube 2, a porous swirl tube 3 and a swirl guide piece 4 arranged in the tower body 1. A guide hole 5 is opened at the top of the guide tube 2. One side of the swirl guide piece 4 is fixedly connected to one side of the guide hole 5 (for example, welding or the two are integrally formed). The swirl guide piece 4 is inclined relative to the radial direction of the guide tube 2. The porous swirl tube 3 is sleeved on the outer side of the guide tube 2 with an outlet. The tower body 1 and the liquid outlet of the porous swirl tube 3 are both connected to the water tank.

[0053] This type of dust removal and dehumidification tower adopts a structure completely different from that of a spray tower. It uses cyclone separation to complete dehumidification while removing dust, and can perform multiple dust removal and dehumidification on process waste gas, effectively improving the treatment effect of 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.

[0054] Taking into account that there is a certain pressure loss in the process of the process exhaust gas flowing through the swirl guide plate 4, in order to further increase the flow velocity of the process exhaust gas, the inner diameter of the above-mentioned guide pipe 2 is gradually reduced along the flow direction of the process exhaust gas. In other words, the guide pipe 2 is a reducing tube, which increases the flow velocity of the process exhaust gas by reducing the diameter, thereby reducing the pressure loss of the process exhaust gas, and further increasing the swirl velocity of the process exhaust gas in the porous swirl tube 3.

[0055] In order to extend the flow path of the process waste gas, the guide hole 5 is located above the vent hole of the porous cyclone tube 3, so as to form a zigzag process waste gas flow path, further improving the dust removal and dehumidification effect of the process waste gas.

[0056] For the porous cyclone tube 3, considering the dust removal and dehumidification effect and the pressure loss, the multiple ventilation holes are evenly arranged, and the multiple ventilation holes are arranged in multiple circles, at least one circle is a bottom hole, which is arranged at the bottom end of the porous cyclone tube 3 and serves as the liquid outlet of the porous cyclone tube 3, and the remaining circles are side wall holes, which are arranged on the side wall of the porous cyclone tube 3.

[0057] In order to achieve stable installation of the dust removal and dehumidification tower, it also includes an outer ring 6, an inner ring 7 and a connecting strip 8. The inner ring 7 is located inside the outer ring 6 and is coaxially arranged with the outer ring 6. There is a gap between the inner ring 7 and the outer ring 6, and the separated dust and water droplets flow into the water tank through the gap. The outer ring 6 is fixedly connected to the water tank, and the inner ring 7 is fixedly connected to the tower body 1, so that a stable connection between the tower body 1 and the water tank can be achieved. One end of the connecting strip 8 is fixedly connected to the outer ring 6, and the other end of the connecting strip 8 is fixedly connected to the inner ring 7. Part of the outer ring 6, part of the inner ring 7 and two adjacent connecting strips 8 constitute a fan-shaped hole as the liquid outlet of the tower body 1.

[0058] Based on the process waste gas treatment system of this embodiment, the process waste gas treatment method is as follows:

[0059] The process waste gas is introduced into the reaction chamber, and harmful process waste gas in the process waste gas undergoes thermal decomposition, so that the content of 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 is supplied to the box body 11 through the process waste gas inlet pipe 9, and the water in the cylinder body 12 is stirred by the agitator, so that the water in the cylinder body 12 swirls at high speed along the axial direction of the cylinder body 12, from the process waste gas inlet to the process waste gas outlet, thereby generating a Venturi effect, forming a low-pressure area near the high-speed flowing fluid, thereby generating an adsorption effect, and forming a flow channel for the process waste gas between the process waste gas inlet and the process waste gas outlet. Under the action of negative pressure, the process waste gas enters the flow channel of the cylinder body 12, and the dust and soluble components in the process waste gas are fully contacted and mixed with the high-speed swirling water, so as to achieve separation of dust and process waste gas, and fully cool the process waste gas, thereby completing a dust removal; the process after dust removal and cooling The waste gas is supplied into the guide pipe 2 from the process waste gas outlet pipe 10, and the process waste gas flows upward in the guide pipe 2, and is supplied into the porous cyclone pipe 3 in a cyclone under the guiding action of the cyclone guide plate 4. During the cyclone process, under the centrifugal action, part of the dust and water droplets in the process waste gas will collide with the wall of the porous cyclone pipe 3, so that the dust and droplets are separated from the process waste gas, and the dust and water droplets flow back to the sewage chamber 112 through the bottom hole under the action of their own gravity, completing the second The process waste gas after the secondary dust removal and the primary dehumidification is supplied into the tower body 1 from the side wall holes of the porous cyclone tube 3 and collides with the tower body 1. The tower body 1 can effectively intercept the dust and water droplets in the process waste gas. After hitting the wall, the waste gas flows back to the sewage chamber 112 through the fan-shaped holes under the action of gravity, completing the tertiary dust removal and the secondary dehumidification. The process waste gas after the tertiary dust removal and the secondary dehumidification is discharged from the dust removal and dehumidification tower from the air outlet at the top of the tower body 1 under the action of negative pressure.

[0060] Embodiment 3: This embodiment provides a method for removing dust from process waste gas, using the process waste gas treatment water tank provided in Embodiment 1, and the dust removal method includes the following steps:

[0061] Step S1: supply water into the box 11 until the cylinder 12 is immersed in the water in the box 11;

[0062] Step S2: turning on the agitator to agitate the water in the cylinder 12, so that the water in the cylinder 12 swirls along the axial direction of the cylinder 12, from the process waste gas inlet to the process waste gas outlet, generating a Venturi effect, and forming a flow channel for the process waste gas between the process waste gas inlet and the process waste gas outlet;

[0063] Step S3: Under the action of negative pressure, the process waste gas enters the flow channel of the cylinder 12, and the dust and soluble components in the process waste gas are contacted and mixed with water, so that the dust and soluble components are separated from the process waste gas, and the process waste gas after dust removal is discharged from the process waste gas outlet pipe 10.

[0064] Compared with the prior art, the beneficial effects of the dust removal method for process waste gas provided in this embodiment are basically the same as the beneficial effects of the process waste gas treatment water tank provided in Example 1, and are not described in detail here.

[0065] Based on the specific structure of the process waste gas treatment water tank, the above step S3 further includes the following steps:

[0066] Step S4: During the continuous stirring of the agitator, the water in the sewage chamber 112 flows back to the clean water chamber 111 through the through holes 15 on the support baffle 14, and circulates in the box body 11 for dust removal.

[0067] In order to ensure the dust removal effect, the above step S4 further includes the following steps:

[0068] Step S5: monitor the dust concentration in the sewage chamber in real time to determine whether the dust concentration exceeds the concentration threshold. If so, proceed to step S6;

[0069] Step S6: Open the sewage outlet of the sewage chamber to discharge sewage, and at the same time, supply water to the box body 11 until the cylinder body 12 is immersed in the water of the box body 11, so as to replace the water in the box body 11.

[0070] 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 process waste gas treatment water tank, characterized in that: It comprises an agitator, a process waste gas inlet pipe, a process waste gas outlet pipe, a box body and a cylinder body arranged in the box body, wherein the process waste gas inlet pipe penetrates the box body and is connected with the process waste gas inlet port of the cylinder body, the process waste gas outlet pipe penetrates the box body and is connected with the process waste gas outlet port of the cylinder body, and the water in the box body at least immerses the cylinder body; The agitator is used to agitate the water in the cylinder so that the water in the cylinder swirls along the axial direction of the cylinder from the process waste gas inlet to the process waste gas outlet to form a Venturi effect, forming a negative pressure area between the process waste gas inlet and the process waste gas outlet as a flow channel for the process waste gas.

2. The process waste gas treatment water tank according to claim 1, characterized in that: It also includes a water supply unit, a water supply controller, a master controller, and a liquid level sensor disposed in the box body, wherein the liquid level sensor detects the liquid level data in the box body in real time and transmits it to the master controller, and the master controller determines whether the liquid level data is lower than the liquid level threshold value. If it is lower than the liquid level threshold value, a water supply increase signal is sent to the water supply controller, and the water supply controller increases the water supply of the water supply unit according to the water supply increase signal; The liquid level threshold is the liquid level data corresponding to when the water in the box reaches the upper end surface of the inner wall of the cylinder.

3. The process waste gas treatment water tank according to claim 2, characterized in that: It also includes a support baffle plate arranged in the box body, the support baffle plate is provided with a support hole, the cylinder body is inserted into the support hole and is fixedly connected to the hole wall of the support hole.

4. The process waste gas treatment water tank according to claim 3, characterized in that: The support baffle divides the space in the box into a clean water chamber connected to the process waste gas inlet pipe and a sewage chamber connected to the process waste gas outlet pipe. The water supply unit is connected to the clean water chamber, and the drainage pipe of the box is connected to the sewage chamber.

5. The process waste gas treatment water tank according to claim 4, characterized in that: The stirring end of the agitator is arranged in the clean water cavity, the water inlet end of the cylinder and the side wall of the clean water cavity have a clean water gap, and the water outlet end of the cylinder and the side wall of the dirty water cavity have a dirty water gap.

6. The process waste gas treatment water tank according to claim 4, characterized in that: The supporting baffle is provided with a through hole, and the through hole is located below the cylinder.

7. The process waste gas treatment water tank according to claim 6, characterized in that: The through hole is covered with a filter screen.

8. The process waste gas treatment water tank according to any one of claims 1 to 7, characterized in that: The process waste gas inlet pipe comprises a reduced diameter pipe and a constant diameter pipe which are sequentially arranged along the flow direction of the process waste gas.

9. The process waste gas treatment water tank according to any one of claims 1 to 7, characterized in that: The agitator includes a drive motor, a mounting sleeve and a stirring blade. The drive motor is located outside the box body. The output shaft of the drive motor passes through the side wall of the box body and extends into the cylinder body. The mounting sleeve is mounted on the outer wall of the output shaft of the drive motor. The stirring blade is fixedly connected to the mounting sleeve.

10. A process waste gas treatment system, characterized in that: It comprises a reaction chamber and a water tank which are sequentially connected along the process waste gas, and the water tank is the process waste gas treatment water tank according to any one of claims 1 to 9.

11. The process waste gas treatment system according to claim 10, characterized in that: It also includes a dust removal and dehumidification tower; The dust removal and dehumidification tower includes a tower body and a guide pipe, a porous vortex pipe and a vortex guide plate arranged in the tower body. A guide hole is opened at the top of the guide pipe, one side of the vortex guide plate is fixedly connected to one side of the guide hole, the vortex guide plate is inclined relative to the radial direction of the guide pipe, and the porous vortex pipe is sleeved on the outer side of the guide pipe with an air outlet.

12. A method for removing dust from process waste gas, characterized in that: Using the process waste gas treatment water tank according to any one of claims 1 to 9, the dust removal method comprises the following steps: Step S1: supply water into the box until the cylinder is immersed in the water in the box; Step S2: turning on the agitator to agitate the water in the cylinder so that the water in the cylinder swirls along the axial direction of the cylinder from the process exhaust gas inlet to the process exhaust gas outlet, generating a Venturi effect, and forming a flow channel for the process exhaust gas between the process exhaust gas inlet and the process exhaust gas outlet; Step S3: Under the action of negative pressure, the process waste gas enters the flow channel of the cylinder, and the dust and soluble components in the process waste gas are contacted and mixed with water, so that the dust and soluble components are separated from the process waste gas, and the process waste gas after dust removal is discharged from the process waste gas outlet pipe.

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