Waste gas treatment device for activated carbon production and treatment method thereof

Abstract

The invention belongs to the technical field of activated carbon production environmental protection equipment, and particularly relates to a waste gas treatment device for activated carbon production and a treatment method thereof.The waste gas treatment device comprises a treatment tank, a spraying assembly and a flow speed adjusting assembly.The treatment tank is provided with a waste gas inlet pipe, the top end of the treatment tank is provided with a gas outlet pipe, and the bottom end of the treatment tank is provided with a blow-off pipe; a water supplementing pipe is further installed on the circumferential outer wall of the treatment tank, the flow speed adjusting assembly comprises a circular frame, a motor frame, a motor and a screw pitch adjustable auger blade, the circular frame is fixedly connected to the interior of the treatment tank, the motor frame is fixedly connected to the lower portion of the circular frame, the motor is installed on the motor frame, and the auger blade is installed on an output shaft of the motor. According to the device, clean water is introduced into waste gas through the waste gas inlet pipe for primary washing, and particles can be effectively removed; the auger blade with the adjustable screw pitch is matched to generate controllable downward inhibition on rising waste gas, so that the contact time of the waste gas and liquid sprayed by the spraying assembly is prolonged, and the purification effect is improved.

Description

Technical Field

[0001] This invention relates to the field of environmental protection equipment technology for activated carbon production, and in particular to a waste gas treatment device and treatment method for activated carbon production. Background Technology

[0002] During the production of activated carbon, waste gas containing pollutants such as particulate matter is generated, which needs to be treated before being discharged. In existing waste gas treatment devices, water washing is often used to treat the waste gas. However, traditional devices often use fixed modes for flow rate control and spray treatment, making it difficult to adjust flexibly according to the actual conditions of the waste gas. For example, although some devices are equipped with flow rate adjustment components, they cannot accurately change the suppression effect on the waste gas, resulting in insufficient contact time or excessive residence of the waste gas with the scrubbing liquid. Therefore, there is an urgent need for a treatment device that can achieve flexible flow rate adjustment and improve the contact effect between the waste gas and the scrubbing liquid through structural optimization. Summary of the Invention

[0003] Based on the technical problems existing in the prior art, the present invention proposes a waste gas treatment device and treatment method for activated carbon production.

[0004] This invention proposes a waste gas treatment device for activated carbon production, comprising a treatment tank with a manhole, a spray assembly, and a flow rate adjustment assembly. The treatment tank is equipped with an L-shaped waste gas inlet pipe for introducing clean water into the waste gas. An outlet pipe is installed at the top of the treatment tank, and a drain pipe is installed at the bottom. A water supply pipe is also installed on the outer circumference of the treatment tank. The flow rate adjustment assembly includes a circular frame, a motor frame, a motor, and adjustable pitch auger blades. The circular frame is fixedly connected inside the treatment tank, and the motor frame is fixedly connected below the circular frame. The motor is mounted on the motor frame, and the auger blades are mounted on the output shaft of the motor. Below the spray layer, the exhaust gas is introduced into the clean water in the treatment tank through an L-shaped exhaust gas inlet pipe for preliminary washing to remove particulate matter. The pre-treated exhaust gas then rises to the spray layer and is sprayed and cleaned by the spray components. At the same time, the motor drives the auger blades to rotate, which suppresses the rising exhaust gas downward and prolongs the spray treatment time. The suppression effect can be adjusted by adjusting the pitch of the auger blades, so that the exhaust gas can fully contact the liquid sprayed by the subsequent spray components. The treated gas is discharged through the exhaust pipe, and the water supply pipe can replenish the clean water in the treatment tank. Finally, the sewage is discharged through the drain pipe, and the manhole facilitates maintenance.

[0005] Preferably, the auger blades include a central shaft and spiral blades with densely distributed ventilation holes on their surface. A set of symmetrically distributed sliding openings are provided on the central shaft. Multiple vertically distributed sliding columns are slidably connected within the sliding openings. One end of each sliding column is rotatably connected to a corresponding position of the spiral blade. The top end of the spiral blade is rotatably connected to the central shaft via a rotating shaft. An electric actuator is fixedly connected inside the central shaft. The output shaft of the electric actuator is fixedly connected to the lowest sliding column. The extension and retraction of the electric actuator drives the lowest sliding column to slide within the sliding opening, thereby driving the other sliding columns to slide synchronously. Since the top end of the spiral blade is rotatably connected to the central shaft, the sliding of the sliding columns changes the tilt angle of the spiral blade, thereby adjusting the pitch of the auger blades. The densely distributed ventilation holes on the surface of the spiral blades can avoid obstructing the upward movement of gas, and at the same time, they work in conjunction with the rotation to regulate the exhaust gas flow rate.

[0006] Preferably, the spray assembly includes a circulating pump, a connecting pipe, and a spray pipe. The inlet of the circulating pump is connected to the treatment tank via a pipe. The spray pipe is installed inside the treatment tank and is connected to the outlet of the circulating pump via the connecting pipe. The circulating pump draws clean water from the treatment tank and delivers it to the spray pipe via the connecting pipe. The spray pipe atomizes or sprays the water into fine droplets, which come into full contact with the rising exhaust gas, further washing and purifying the exhaust gas and realizing the recycling of water resources.

[0007] Preferably, the treatment tank is further fixedly connected to a gas equalization mesh plate immersed in the cleaning water, and the gas equalization mesh plate is sleeved on the exhaust gas inlet pipe; after the exhaust gas enters the cleaning water through the exhaust gas inlet pipe, the exhaust gas is dispersed into fine bubbles by the action of the gas equalization mesh plate, which increases the contact area between the exhaust gas and the cleaning water, improves the effect of preliminary washing, and makes some pollutants in the exhaust gas easier to be absorbed by the water.

[0008] Preferably, the waste gas treatment device for activated carbon production further includes: The concentration acquisition module, installed in the exhaust pipe, directly monitors the cleanliness of the final emitted gas and generates a gas concentration change coefficient through the control module. The current acquisition module, installed on the motor's power supply line, monitors the motor load in real time and generates a current fluctuation coefficient through the control module. The concentration acquisition module monitors the cleanliness of the emitted gas in the exhaust pipe in real time and generates a gas concentration change coefficient, while the current acquisition module monitors the motor load in real time and generates a current fluctuation coefficient. The control module comprehensively analyzes the two coefficients to generate an evaluation coefficient. When the evaluation coefficient is higher than the reference threshold, the control module can increase the power of the circulating pump to enhance the spraying effect, or adjust the motor speed and the screw pitch of the auger blades to change the exhaust gas flow rate, making the exhaust gas purification more complete. When the evaluation coefficient is lower than the reference threshold, the current working state can be maintained to save energy.

[0009] Preferably, the execution steps of the control module controlling the working state of the spray assembly and the flow rate adjustment assembly based on the comparison results are as follows: The gas concentration acquisition module acquires the gas concentration; the current acquisition module acquires the operating current of the motor; the control module calculates the gas concentration change coefficient, the current fluctuation coefficient and the evaluation coefficient Rpg; if Rpg < R threshold: the system operates well and maintains all current parameters; if Rpg ≥ R threshold: the system processing efficiency decreases or the load is abnormal, and the enhanced processing mode is executed: First, increase the power of the circulation pump; Second, increase the rotation speed of the auger blade; Third, increase the pitch of the auger blade.

[0010] Preferably, the generation logic of the gas concentration change coefficient is as follows: The actual gas concentrations measured at different times within T time during the waste gas treatment process are obtained through the concentration acquisition module; based on the deviation degree between the actual gas concentration and the average gas concentration, the gas concentration change coefficient reflecting the gas concentration fluctuation degree is calculated.

[0011] Preferably, the generation logic of the current fluctuation coefficient is as follows: The actual operating current of the motor measured at different times within T time during the waste gas treatment process is obtained through the current acquisition module; based on the deviation degree between the actual operating current and the average operating current, the current fluctuation coefficient reflecting the current fluctuation degree is calculated.

[0012] Preferably, the generation logic of the evaluation coefficient is as follows: The control module performs dynamic trade-off calculations based on the gas concentration change coefficient and the current fluctuation coefficient, and combines the preset weight coefficient to generate a comprehensive index reflecting the operating state of the waste gas treatment device.

[0013] The present invention also provides a waste gas treatment method for activated carbon production, including the following steps: S1. Waste gas introduction: The waste gas is introduced into the clean water in the treatment tank through the waste gas inlet pipe, and is dispersed into fine bubbles through the air distribution grid plate immersed in the clean water for preliminary washing. S2. Spray purification: The circulation pump transports the clean water in the treatment tank to the spray pipe through the connecting pipe, and the liquid droplets sprayed from the spray pipe contact the rising waste gas for deep washing. S3. Flow rate regulation: The motor drives the auger blade with adjustable pitch to rotate, and the pitch of the spiral blade is adjusted by the electric push rod to adjust the rising flow rate of the waste gas and extend the purification contact time. S4. Real-time monitoring and adjustment: The concentration acquisition module monitors the gas cleanliness in the outlet pipe, the current acquisition module monitors the motor load, and the control module combines the two to generate an evaluation coefficient to dynamically adjust the power of the circulation pump, the rotation speed of the auger blade and the pitch. S5. Discharge and maintenance: The treated gas is discharged through the outlet pipe, the sewage is discharged through the sewage discharge pipe, and the clean water is supplemented in a timely manner through the water supply pipe.

[0014] Compared with the prior art, the present invention provides a waste gas treatment device and method for activated carbon production, which has the following beneficial effects: Improved exhaust gas treatment efficiency: The exhaust gas is pre-washed by passing clean water through the L-shaped exhaust gas inlet pipe, which can effectively remove particulate matter; in conjunction with the adjustable pitch auger blades, the rising exhaust gas is controlled to be suppressed downward, which prolongs the contact time between the exhaust gas and the liquid sprayed from the spray component, thus improving the purification effect.

[0015] Enhanced adaptability and flexibility: The pitch of the auger blades can be adjusted through structures such as electric actuators and sliding columns, which can flexibly change the suppression effect according to the amount of exhaust gas and the concentration of pollutants, ensuring full contact between exhaust gas and scrubbing liquid, and adapting to different working conditions.

[0016] Achieving water resource recycling: The spray assembly recycles the clean water in the treatment tank through a circulation pump, reducing water consumption and lowering treatment costs; The structure is reasonably designed and easy to maintain: Water supply pipes and sewage discharge pipes are set up to achieve clean water replenishment and sewage discharge respectively, and the manhole facilitates internal maintenance of the equipment. The overall structure takes into account both functionality and maintainability.

[0017] Intelligent dynamic control: The concentration acquisition module and current acquisition module monitor the cleanliness of the emitted gas and the motor load in real time. The control module comprehensively analyzes and generates evaluation coefficients, and dynamically adjusts the spray intensity and auger blade parameters to ensure stable treatment efficiency while reducing the risk of equipment blockage. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a waste gas treatment device for activated carbon production proposed in this invention. Figure 2 This is a schematic diagram of the internal structure of a waste gas treatment device for activated carbon production proposed in this invention. Figure 3 For the present invention Figure 2 A magnified structural diagram at point A; Figure 4 This is a schematic diagram of the auger blade structure of an activated carbon production waste gas treatment device proposed in this invention; Figure 5 For the present invention Figure 4 A magnified structural diagram at point B; Figure 6 This is a schematic diagram of the internal structure of the central shaft of a waste gas treatment device for activated carbon production proposed in this invention. Figure 7 This is a system block diagram of a waste gas treatment device for activated carbon production proposed in this invention.

[0019] In the diagram: 1. Treatment tank; 2. Exhaust gas inlet pipe; 3. Gas distribution mesh plate; 4. Exhaust pipe; 5. Sewage pipe; 6. Water supply pipe; 7. Circulation pump; 8. Connecting pipe; 9. Spray pipe; 10. Manhole; 11. Circular frame; 12. Motor frame; 13. Motor; 14. Screwdriver blade; 1401. Central shaft; 1402. Spiral blade; 15. Sliding port; 16. Sliding column; 17. Electric actuator. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0021] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0022] Reference Figures 1-7 A waste gas treatment device for activated carbon production includes a treatment tank 1 with a manhole 10, a spray assembly, and a flow rate adjustment assembly. An L-shaped waste gas inlet pipe 2 is installed on the treatment tank 1 to pass waste gas into clean water. An outlet pipe 4 is installed at the top of the treatment tank 1, and a drain pipe 5 is installed at the bottom of the treatment tank 1. A water supply pipe 6 is also installed on the outer circumference of the treatment tank 1. The flow rate adjustment assembly includes a circular frame 11, a motor frame 12, a motor 13, and an auger blade 14 with adjustable pitch. The circular frame 11 is fixedly connected inside the treatment tank 1, the motor frame 12 is fixedly connected below the circular frame 11, the motor 13 is installed on the motor frame 12, and the auger blade 14 is installed on the output shaft of the motor 13 and located below the spray layer. In use, the exhaust gas is introduced into the clean water in the treatment tank 1 through the L-shaped exhaust gas inlet pipe 2 for preliminary washing to remove particulate matter. Then, the pre-treated exhaust gas rises to the spray layer and is sprayed and cleaned by the spray components. At the same time, the motor 13 drives the auger blades 14 to rotate, which suppresses the rising exhaust gas downward and prolongs the spray treatment time. The suppression effect can be adjusted by adjusting the pitch of the auger blades 14, so that the exhaust gas can fully contact the liquid sprayed by the subsequent spray components. The treated gas is discharged through the exhaust pipe 4, and the water supply pipe 6 can replenish the clean water in the treatment tank 1. Finally, the sewage is discharged through the drain pipe 5, and the manhole 10 facilitates maintenance.

[0023] In this invention, the auger blade 14 includes a central shaft 1401 and a spiral blade 1402 with densely packed air holes on its surface. A set of symmetrically distributed sliding openings 15 are opened on the central shaft 1401. Multiple vertically distributed sliding columns 16 are slidably connected in the sliding openings 15. One end of the sliding column 16 is rotatably connected to the corresponding position of the spiral blade 1402. The top end of the spiral blade 1402 is rotatably connected to the central shaft 1401 through a rotating shaft. An electric actuator 17 is fixedly connected inside the central shaft 1401. The output shaft of the electric actuator 17 is fixedly connected to the lowest sliding column 16. In use, the electric actuator 17 extends and retracts, causing the lowest sliding column 16 to slide within the sliding opening 15, which in turn causes the other sliding columns 16 to slide synchronously. Since the top of the spiral blade 1402 is rotatably connected to the central shaft 1401, the sliding of the sliding column 16 changes the tilt angle of the spiral blade 1402, thereby adjusting the pitch of the auger blade 14. The dense ventilation holes on the surface of the spiral blade 1402 can avoid obstructing the rise of gas, and at the same time, it can adjust the exhaust gas flow rate in conjunction with its rotation.

[0024] In this invention, the spray assembly includes a circulating pump 7, a connecting pipe 8, and a spray pipe 9. The inlet of the circulating pump 7 is connected to the treatment tank 1 through a pipe. The spray pipe 9 is installed inside the treatment tank 1 and is connected to the outlet of the circulating pump 7 through the connecting pipe 8. During use, the circulating pump 7 draws out the clean water from the treatment tank 1 and delivers it to the spray pipe 9 through the connecting pipe 8. The spray pipe 9 atomizes or sprays the water into fine droplets, which come into full contact with the rising exhaust gas, further washing and purifying the exhaust gas and realizing the recycling of water resources.

[0025] Furthermore, in this invention, a gas equalization mesh plate 3 immersed in cleaning water is fixedly connected inside the treatment tank 1, and the gas equalization mesh plate 3 is sleeved on the exhaust gas inlet pipe 2. During use, after the exhaust gas enters the cleaning water through the exhaust gas inlet pipe 2, the exhaust gas is dispersed into fine bubbles by the gas equalization mesh plate 3, which increases the contact area between the exhaust gas and the cleaning water, improves the effect of preliminary washing, and makes some pollutants in the exhaust gas easier to be absorbed by the water.

[0026] In another embodiment of the present invention, the waste gas treatment device for activated carbon production further includes: The concentration acquisition module is installed in the gas outlet pipe 4 to directly monitor the cleanliness of the final emitted gas and generate a gas concentration change coefficient through the control module. The current acquisition module is installed on the power supply line of motor 13 to monitor the load of motor 13 in real time and generate the current fluctuation coefficient through the control module. The control module comprehensively analyzes the generated gas concentration change coefficient and current fluctuation coefficient to generate an evaluation coefficient. The evaluation coefficient is compared with a pre-set reference threshold, and the working status of the spray assembly and flow rate adjustment assembly is controlled based on the comparison results. It should be noted that the concentration acquisition module can be a gas concentration sensor or other device that can monitor gas cleanliness in real time, the current acquisition module can be a Hall current sensor or other device that can monitor the load of motor 13 in real time, and the control module is an embedded controller, such as the STM32 series, which integrates data fusion algorithms. Therefore, the concentration acquisition module, current acquisition module and control module are not specifically limited here and can be selected according to actual needs. During use, the concentration acquisition module monitors the cleanliness of the gas emitted from the exhaust pipe 4 in real time and generates a gas concentration change coefficient, while the current acquisition module monitors the load of the motor 13 in real time and generates a current fluctuation coefficient. The control module comprehensively analyzes the two coefficients to generate an evaluation coefficient. When the evaluation coefficient is higher than the reference threshold, the control module can increase the power of the circulating pump 7 to enhance the spraying effect, or adjust the speed of the motor 13 and the pitch of the auger blades 14 to change the exhaust gas flow rate, so that the exhaust gas is purified more thoroughly. When the evaluation coefficient is lower than the reference threshold, the current working state can be maintained to save energy.

[0027] In this invention, the control module comprehensively analyzes the generated gas concentration change coefficient and current fluctuation coefficient to generate an evaluation coefficient. The evaluation coefficient is then compared with a pre-set reference threshold, and the operating states of the spray assembly and flow rate adjustment assembly are controlled based on the comparison results. The execution steps are as follows: Real-time detection: The concentration acquisition module collects gas concentration; the current acquisition module collects the operating current of motor 13; Coefficient calculation: Gas concentration variation coefficient CΔ: This coefficient characterizes the stability of the treatment efficiency. A smaller coefficient value indicates a more stable outlet concentration and better treatment effect; a larger value indicates greater concentration fluctuations and incomplete treatment. In this invention, the generation logic of the gas concentration variation coefficient is as follows: S1. Obtain the actual gas concentration measured at different times within time T during the waste gas treatment process through the concentration acquisition module, and calibrate the actual gas concentration obtained at time m within time T as... m = 1, 2, 3, ..., t, where m is a positive integer; S2. Calculate the gas concentration change coefficient. The expression for the calculation is: In the formula, The average concentration over time T; t is the number of samples taken over time T.

[0028] Current fluctuation coefficient Iσ: This coefficient quantifies the load fluctuation of the motor 13 caused by the adhesion of pollutants (such as tar) in the waste gas to the auger blades 14. The larger the coefficient value, the greater the mechanical resistance, and there may be a risk of blockage. In the present invention, the generation logic of the current fluctuation coefficient is as follows: S1. Obtain the actual working current of the motor 13 measured at different times within the time period T during the waste gas treatment process through the current acquisition module, and calibrate the actual working current obtained at the m-th moment within the time period T as , n = 1, 2, 3,..., k, where n is a positive integer; S2. Calculate the current fluctuation coefficient, and the calculation expression is: In the formula, is the average working current within the time period T; k is the number of sampling times within the time period T.

[0029] Evaluation coefficient Rpg: This coefficient combines the two risks of "poor treatment effect" and "abnormal equipment load", and is analyzed formulaically through the control module. According to the formula: In the formula, w1 and w2 are preset weight coefficients for gas concentration change and current fluctuation (dynamically determined by combining experimental data and process requirements. The optimal w1 and w2 are finally determined through a closed-loop iterative process of initial theoretical assignment → on-site operation test → observation of effects → fine-tuning of parameters. This process is a standard practice for the commissioning of industrial automation systems, so it will not be elaborated here.), and w1, w2 > 1.

[0030] Dynamic adjustment: If Rpg < R threshold: The system is operating well, and all current parameters are maintained; if Rpg ≥ R threshold: The system processing efficiency decreases or the load is abnormal, and the enhanced processing mode is executed: I. Increase the power of the circulation pump 7: Increase the spray water pressure and water volume to enhance the washing effect; II. Increase the rotation speed of the auger blades 14: Increase the cutting frequency of the auger blades 14 on the gas and the downward inhibition effect; III. Increase the pitch of the auger blades 14: Adjust the spiral blade 1402 through the electric push rod 17 to make its spiral line more "tilted" (i.e., the pitch increases), which will generate a stronger downward axial force at the same rotation speed, more effectively block the gas from rising, and extend the residence time.

[0031] In addition, the present invention also provides a waste gas treatment method for the production of activated carbon, including the following steps: S1. Waste gas introduction: The waste gas is introduced into the clean water in the treatment tank 1 through the waste gas inlet pipe 2, and is dispersed into fine bubbles through the gas distribution grid plate 3 immersed in the clean water for preliminary washing; S2, Spray purification: The circulating pump 7 delivers the clean water in the treatment tank 1 to the spray pipe 9 through the connecting pipe 8. The spray pipe 9 sprays droplets that come into contact with the rising exhaust gas for deep washing. S3. Flow rate control: The motor 13 drives the adjustable pitch auger blades 14 to rotate, and the pitch of the auger blades 1402 is adjusted by the electric push rod 17 to regulate the upward flow rate of the exhaust gas and extend the purification contact time. S4. Real-time monitoring and adjustment: The concentration acquisition module monitors the gas cleanliness in the outlet pipe 4, the current acquisition module monitors the load of the motor 13, and the control module combines the two to generate an evaluation coefficient, dynamically adjusting the power of the circulating pump 7, the speed and pitch of the screw conveyor blades 14. S5. Discharge and maintenance: The treated gas is discharged through the gas outlet pipe 4, the sewage is discharged through the sewage pipe 5, the water supply pipe 6 replenishes clean water as needed, and the equipment is inspected and maintained through the manhole 10.

[0032] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An exhaust gas treatment device for activated carbon production comprising a treatment tank (1) with a manhole (10), a spraying assembly and a flow rate adjustment assembly, characterized in that, An L-shaped exhaust gas inlet pipe (2) for introducing exhaust gas into clean water is installed on the treatment tank (1). An air outlet pipe (4) is installed at the top end of the treatment tank (1), and a sewage discharge pipe (5) is installed at the bottom end of the treatment tank (1). A water replenishing pipe (6) is also installed on the circumferential outer wall of the treatment tank (1). The flow rate adjustment component includes a circular frame (11), a motor frame (12), a motor (13), and a screw conveyor blade (14) with adjustable pitch. The circular frame (11) is fixedly connected inside the treatment tank (1), the motor frame (12) is fixedly connected below the circular frame (11), the motor (13) is installed on the motor frame (12), and the screw conveyor blade (14) is installed on the output shaft of the motor (13) and is located below the spraying layer.

2. The waste gas treatment device for activated carbon production according to claim 1, characterized in that, The screw conveyor blade (14) includes a central shaft (1401) and a spiral blade (1402) with dense ventilation holes on its surface. A group of symmetrically distributed sliding openings (15) are formed on the central shaft (1401). A plurality of vertically distributed sliding columns (16) are slidably connected inside the sliding openings (15). One end of the sliding column (16) is rotatably connected to a corresponding position of the spiral blade (1402). The top end of the spiral blade (1402) is rotatably connected to the central shaft (1401) through a rotating shaft. An electric push rod (17) is fixedly connected inside the central shaft (1401). The output shaft of the electric push rod (17) is fixedly connected to the lowermost sliding column (16).

3. The waste gas treatment device for activated carbon production according to claim 1, characterized in that, The spraying component includes a circulation pump (7), a connecting pipe (8), and a spraying pipe (9). The water inlet end of the circulation pump (7) is connected to the treatment tank (1) through a pipeline. The spraying pipe (9) is installed inside the treatment tank (1), and the spraying pipe (9) is connected to the water outlet end of the circulation pump (7) through the connecting pipe (8).

4. The waste gas treatment device for activated carbon production according to claim 1, characterized in that, An air distribution grid plate (3) immersed in clean water is fixedly connected inside the treatment tank (1). The air distribution grid plate (3) is sleeved on the exhaust gas inlet pipe (2).

5. The waste gas treatment device for activated carbon production according to claim 1, characterized in that, Also included are: A concentration acquisition module for directly monitoring the cleanliness of the finally discharged gas and generating a gas concentration change coefficient through a control module; A current acquisition module for real-time monitoring of the load of the motor (13) and generating a current fluctuation coefficient through a control module; The control module comprehensively analyzes the generated gas concentration change coefficient and current fluctuation coefficient to generate an evaluation coefficient. The evaluation coefficient is compared with a pre-set reference threshold, and the working states of the spraying component and the flow rate adjustment component are controlled according to the comparison result.

6. The waste gas treatment device for activated carbon production according to claim 5, characterized in that, The execution steps for the control module to control the working states of the spraying component and the flow rate adjustment component according to the comparison result are as follows: The concentration acquisition module acquires the gas concentration; the current acquisition module acquires the working current of the motor (13); the control module calculates the gas concentration change coefficient, the current fluctuation coefficient, and the evaluation coefficient Rpg; if Rpg < R threshold: The system runs well, and all current parameters are maintained; if Rpg ≥ R threshold: The system processing efficiency decreases or the load is abnormal, and the enhanced processing mode is executed: First, increase the power of the circulation pump (7); Second, increase the rotation speed of the screw conveyor blade (14); Third, increase the pitch of the screw conveyor blade (14).

7. The waste gas treatment device for activated carbon production according to claim 5, characterized in that, The generation logic of the gas concentration change coefficient is: The actual gas concentration measured at different times within time T during the waste gas treatment process is obtained through the concentration acquisition module; based on the degree of deviation between the actual gas concentration and the average gas concentration, the gas concentration change coefficient, which reflects the degree of gas concentration fluctuation, is calculated.

8. The waste gas treatment device for activated carbon production according to claim 5, characterized in that, The logic for generating the current fluctuation coefficient is as follows: The actual operating current of the motor (13) is obtained at different times during the T time period in the waste gas treatment process by the current acquisition module; based on the deviation between the actual operating current and the average operating current, the current fluctuation coefficient reflecting the degree of current fluctuation is calculated.

9. The waste gas treatment device for activated carbon production according to claim 5, characterized in that, The logic for generating the evaluation coefficients is as follows: The control module performs dynamic weighting calculations based on the gas concentration change coefficient and the current fluctuation coefficient, combined with preset weighting coefficients, to generate a comprehensive index reflecting the operating status of the waste gas treatment device.

10. The method for treating waste gas from activated carbon production according to any one of claims 1-9, characterized in that, Includes the following steps: S1. Waste gas introduction: Waste gas is introduced into the clean water in the treatment tank (1) through the waste gas inlet pipe (2), and dispersed into fine bubbles by the gas equalization mesh plate (3) submerged in the clean water for preliminary washing; S2, Spray purification: The circulating pump (7) transports the clean water in the treatment tank (1) to the spray pipe (9) through the connecting pipe (8). The spray pipe (9) sprays out droplets that come into contact with the rising exhaust gas for deep washing. S3, Flow rate control: The motor (13) drives the adjustable pitch auger blades (14) to rotate, and the pitch of the auger blades (1402) is adjusted by the electric push rod (17) to regulate the upward flow rate of the exhaust gas and extend the purification contact time. S4. Real-time monitoring and adjustment: The concentration acquisition module monitors the gas cleanliness in the outlet pipe (4), the current acquisition module monitors the motor (13) load, and the control module combines the two to generate an evaluation coefficient, dynamically adjusting the power of the circulating pump (7), the speed of the auger blade (14), and the pitch. S5. Discharge and maintenance: The treated gas is discharged through the gas outlet pipe (4), the sewage is discharged through the sewage pipe (5), and the water supply pipe (6) replenishes clean water in a timely manner.

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