Waste gas treatment device for acrylic coating production

Abstract

The invention relates to the technical field of waste gas treatment, in particular to an acrylic coating production waste gas treatment device which comprises a gas introduction module, a cooling channel, a first-order treatment case, a second-order treatment case and an exhaust module which are communicated in sequence. The gas introduction module is linked with a thermoelectric refrigeration sheet through an initial temperature detection box to realize waste gas pre-cooling; the cooling channel adopts an arch-shaped guide supporting structure to integrate linearly-arranged thermoelectric refrigeration sheets, and the airflow temperature is accurately regulated and controlled. An arc-shaped ventilation partition plate is arranged in the first-order treatment machine box to divide the first-order treatment machine box into an airflow lifting chamber and an adsorption chamber, a zeolite rotation assembly is arranged in the first-order treatment machine box, waste gas is driven by rotating speed control to form circumferential vortex enhanced adsorption, and the waste gas is directionally conveyed to the second-order treatment machine box through periodically-aligned exhaust notches. A multi-section adsorption long pipe of the second-order treatment case is provided with a temperature control system in a partitioned manner, each branch interval is linked with a cold air injection machine box through an independent sensing probe to stabilize the adsorption temperature, and a driver dynamically adjusts the rotating speed of a spiral turning piece according to the online concentration feedback of an exhaust module.

Description

Technical Field

[0001] This invention relates to the field of waste gas treatment technology, specifically a waste gas treatment device for acrylic coating production. Background Technology

[0002] In existing technologies, fixed-bed adsorption devices are widely used for the treatment of volatile organic compounds (VOCs) in waste gas, especially in the field of waste gas treatment in the acrylic coating industry. These devices are typically designed as single-stage or multi-stage series static adsorption beds, relying on the passive interception of pollutants by filling them with activated carbon or zeolite adsorbents.

[0003] However, this type of equipment has component defects. When treating acrylic acid waste gas containing high concentrations of esters and benzene compounds, the adsorbent surface releases a large amount of adsorption heat due to chemical reactions, causing a localized surge in bed temperature (measured to over 80°C). This high-temperature environment not only triggers adsorbent desorption failure but also promotes the polymerization reaction of residual monomers, clogging the pores and significantly reducing adsorption efficiency and lifespan. These defects lead to the risk of a sharp drop in purification efficiency and excessive exhaust gas concentration in existing equipment. Summary of the Invention

[0004] The purpose of this invention is to provide a device for treating waste gas from acrylic coating production, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] An acrylic coating production waste gas treatment device includes a gas introduction module, a cooling channel, a first-stage treatment unit, a second-stage treatment unit, and an exhaust module connected in sequence.

[0007] The cooling channel output end is connected to the inclined air guide at the bottom of the first-stage processor chassis through a pressurization module, forming an airflow path from bottom to top;

[0008] The inner cavity of the first-stage processing unit is divided into a bottom airflow lifting chamber and a top adsorption chamber by an arc-shaped ventilation partition. The airflow lifting chamber is directly connected to the inclined guide section, and the adsorption chamber contains a rotatable zeolite wheel assembly.

[0009] The zeolite rotating assembly includes two coaxially arranged circular rotating disks, multiple tilting supports fixed between the two rotating disks at equal angles, and the edges of the rotating disks are sealed and fitted to the inner wall of the adsorption chamber.

[0010] The box body is equipped with a belt drive mechanism to drive the rotating disc. After the exhaust gas is accelerated by the booster module, it enters the airflow lifting chamber along the inclined guide section. When it passes through the zeolite wheel assembly from bottom to top, it is formed by the action of the overturning support to form a circumferential vortex.

[0011] An exhaust port is provided on one of the rotating disks. When the exhaust port is rotated to be aligned with the gas delivery box on the side wall of the housing, the gas is introduced into the second-stage processing unit.

[0012] The second-stage processing chassis includes a guide box connected to the gas delivery box and a multi-segment adsorption tube. The adsorption tube has a built-in steering shaft and spiral flaps, and its end is connected to the exhaust module.

[0013] As a further aspect of the present invention: the gas introduction module includes an induced draft unit and an initial temperature detection box. The outer shell of the initial temperature detection box is provided with a main fixing frame and a connecting frame. The induced draft unit is installed on the main fixing frame and the cooling channel is supported by the connecting frame.

[0014] As a further embodiment of the present invention: the cooling channel includes an arched symmetrical guide support and its internal ventilation pipe, and the bottom of the guide support is provided with a fixed base and an external fixing plate;

[0015] Multiple thermoelectric cooling elements are linearly arranged on the inner wall of the arched pipe section. Their arc-shaped contours completely wrap around the outer wall of the ventilation pipe, and the thermoelectric cooling elements are controlled by the sensor signal of the initial temperature detection box to open and close.

[0016] As a further aspect of the present invention: the pressurization module includes a connecting box connected to the cooling channel, a flow guide box and an air supply pump, and the airflow is pressurized by the air supply pump and then input into the inclined flow guide.

[0017] As a further aspect of the present invention: the arc-shaped lower surface of the ventilation partition plate fits into the bottom contour of the rotating disk, and the flipping support includes a fixed support rod and multiple vertically fixed L-shaped flipping rods.

[0018] As a further embodiment of the present invention: the rotating disk is mounted on a fixed bearing on the center line of the housing via a support shaft, and the belt drive mechanism drives the support shaft to rotate;

[0019] The periodic alignment of the exhaust port and the gas delivery box is controlled by the rotation speed of the rotating disc.

[0020] As a further aspect of the present invention: the adsorption tube of the second-stage processing chassis is fixed by a supporting base plate, the driver drives the steering shaft to drive the spiral flipping plate, the inner cavity of the adsorption tube is divided into multiple branch sections, and each branch section is provided with a cold air injection box and a temperature detector with a sensing probe on its side wall.

[0021] As a further embodiment of the present invention: the exhaust module is provided with an exhaust connection port, which contains an online concentration monitoring instrument;

[0022] The online concentration monitor sends a feedback signal to the driver, which dynamically adjusts the rotation speed of the spiral tumbling plate.

[0023] As a further aspect of the present invention: the temperature in each branch section is independently monitored by the sensing probe of the temperature detector, and the cooling intensity of the corresponding cold air injection box is controlled in conjunction with the temperature.

[0024] Compared with the prior art, the beneficial effects of the present invention are:

[0025] I. An active zeolite rotary adsorption system based on airflow dynamics reconstruction was constructed: Unlike traditional static adsorption beds, it uniquely uses a composite flow guiding design of inclined flow guiding structure and arc-shaped partition plate to force the waste gas to form a bottom-up directional flow field; at the same time, with a rotating zeolite rotary component with precise profile matching, multi-dimensional turbulence is continuously generated during high-speed rotation, which causes high-frequency shear renewal at the interface between waste gas and adsorbent, thereby improving gas phase mass transfer efficiency and breaking through the bottleneck of low-concentration VOCs adsorption rate.

[0026] II. Design of an intelligent temperature control-disturbance coupling system for multi-segment deep-bed adsorption tubes: By deploying independent temperature sensors and cold gas injection units in multiple axially separated sections, millimeter-level precise zonal control of the adsorption reaction zone temperature is achieved, solving the problem of local adsorbent failure caused by adsorption heat accumulation; at the same time, combined with closed-loop feedback control of the spiral tumbling plate speed and pollutant concentration, when the online concentration monitor detects residual pollutants at the end, the spiral tumbling plate speed is increased in real time, which significantly reduces the redundant adsorbent filling amount while ensuring emission compliance by enhancing the lateral mixing intensity and extending the gas residence time.

[0027] III. A multi-parameter collaborative response mechanism for the entire process has been established: the pre-cooling linkage system of the initial temperature detection module and the thermoelectric cooling element can adaptively adjust the inlet temperature fluctuation to provide the best working conditions for the adsorption section; the speed and exhaust timing control technology of the zeolite rotor assembly realizes valveless pulsed gas directional transfer by precisely calculating the balance of centrifugal force and gas pressure; finally, the processing parameters are optimized in real time through a three-level signal feedback system (temperature-flow rate-concentration).

[0028] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0029] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. Furthermore, these drawings and textual descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concepts of this application to those skilled in the art through reference to specific embodiments.

[0030] Figure 1 This is a schematic diagram of the overall structure of the acrylic coating production waste gas treatment device provided in an embodiment of the present invention.

[0031] Figure 2 A schematic diagram of the internal structure of a first-order processor chassis provided in an embodiment of the present invention. Figure 1 .

[0032] Figure 3 A schematic diagram of the internal structure of a first-order processor chassis provided in an embodiment of the present invention. Figure 2 .

[0033] Figure 4 This is a schematic diagram of the internal structure of a second-order processing chassis provided in an embodiment of the present invention.

[0034] Figure 5 This is a schematic diagram of the gas introduction module and cooling channel provided in an embodiment of the present invention.

[0035] Figure 6 This is a side view structural diagram of the guide support provided in an embodiment of the present invention.

[0036] Figure 7 This is a schematic diagram of the booster module provided in an embodiment of the present invention.

[0037] Figure 8 This is a schematic diagram of the structure of the branch section of the adsorption tube provided in an embodiment of the present invention.

[0038] In the diagram: 1. Gas introduction module; 11. Gas evacuation unit; 12. Initial temperature detection box; 13. Main fixing frame; 14. Connecting frame; 15. Gas evacuation cylinder; 2. First-stage processing chassis; 21. Ventilation partition plate; 22. Airflow lifting chamber; 23. Adsorption chamber; 3. Exhaust module; 31. Exhaust connection port; 32. Online concentration monitor; 4. Cooling channel; 41. Guide support; 42. Ventilation pipe; 43. Fixing base; 44. External fixing plate; 45. Pipe passage; 46. Thermoelectric cooling element; 5. Pressurization module; 51. Connecting box; 52. Flow guide box; 53. Air supply pump; 6. Second-stage processing unit; 61. Guide box; 62. Adsorption tube; 63. Support base plate; 64. Driver; 65. Steering shaft; 66. Spiral tumbling plate; 67. Temperature detector; 68. Sensor probe; 69. Cold air injection box; 7. Inclined flow guide; 8. Zeolite wheel assembly; 81. Rotating disk; 82. Tumbling support; 83. Exhaust port; 84. Fixed bearing; 85. Support shaft; 86. Fixed support rod; 87. L-shaped tumbling rod; 88. Gas delivery box; 9. Belt drive components. Detailed Implementation

[0039] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, examples of which are illustrated in the drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or identical elements.

[0040] Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0041] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0042] Example 1, please refer to Figures 1-4 An acrylic coating production waste gas treatment device includes a gas introduction module 1, a cooling channel 4, a first-stage treatment chamber 2, a second-stage treatment chamber 6, and an exhaust module 3 connected in sequence. The output end of the cooling channel 4 is connected to the inclined guide section 7 at the bottom of the first-stage treatment chamber 2 via a pressurization module 5, ensuring that the airflow flows from bottom to top. The inner cavity of the first-stage treatment chamber 2 is divided into a bottom airflow lifting chamber 22 and a top adsorption chamber 23 by an arc-shaped ventilation partition 21. The airflow lifting chamber 22 is directly connected to the inclined guide section 7. The adsorption chamber 23 contains a rotatable zeolite wheel assembly 8, which includes two coaxially arranged circular rotating disks 81 and multiple tilting supports 82 fixed between the two rotating disks 81 at equal angles. The edges of the rotating disks 81 are sealed to the inner wall of the adsorption chamber 23. A belt drive mechanism 9 is provided outside the chamber to drive the rotating disks 81 to rotate. One of the rotating disks 81 has an exhaust slot 83. The second-stage processing unit 6 includes a guide box 61 connected to the gas delivery box 88 and a multi-segment adsorption tube 62. The adsorption tube 62 has a built-in steering shaft 65 and a spiral agitator 66 fixed thereon, and its end is connected to the exhaust module 3. When the exhaust port 83 rotates with the rotating disk 81 to align with the gas delivery box 88 on the side wall of the first-stage processing unit 2, the gas is introduced into the second-stage processing unit 6.

[0043] During operation, the waste gas generated from acrylic paint production first enters the gas inlet module 1, is pre-cooled by the cooling channel 4, and then accelerated by the pressurization module 5 into the inclined guide section 7 at the bottom of the first-stage treatment chamber 2. The waste gas flows upward into the airflow lifting chamber 22, and then continues to rise through the zeolite rotating assembly 8 in the adsorption chamber 23. During this process, the agitating support 82 on the rotating zeolite rotating assembly 8 continuously agitates the flowing waste gas, forming a circumferential vortex state and fully contacting and adsorbing it with the zeolite. The airflow that has completed the first-stage adsorption enters the gas delivery box 88 on the side wall through the rotated exhaust port 83, and is guided by the guide box 61 into the multi-segment adsorption tube 62 of the second-stage treatment chamber 6. As the airflow flows through the adsorption tube 62, the spiral agitator 66 rotates with the steering shaft 65, pushing the gas spiral forward and continuously agitating the adsorbent inside the tube. Finally, the clean gas after two stages of treatment is discharged through the exhaust module 3.

[0044] This device employs a two-stage high-efficiency adsorption process. The first stage takes place in the first-stage treatment chamber 2, where the bottom-up airflow generated by the self-pressurizing module 5, combined with the inclined guide section 7, enters the airflow lifting chamber 22 and then passes evenly through the adsorption chamber 23. The core of the zeolite rotating assembly 8 lies in the combined effect of its rotation and airflow: the rotating agitator 82 continuously changes the airflow direction and local velocity, forcing the gas to form a circumferential vortex, significantly increasing the gas-solid turbulence intensity and contact time, and greatly improving adsorption efficiency; at the same time, the rotating structure ensures the continuity of treatment capacity. After primary treatment, the waste gas is periodically introduced into the secondary treatment through the exhaust port 83. The second stage takes place in the multi-segment adsorption tube 62 of the second-stage treatment chamber 6. Its technical principle utilizes the built-in rotating spiral agitator 66 to generate a forced spiral propulsion flow field along the tube axis, forcing the gas to produce strong lateral mixing and axial thrust, ensuring that the gas has sufficient, uniform, and long-term contact with the adsorbent in the long tube for deep purification, avoiding the adsorption blind zone and premature penetration problems that are common in conventional fixed beds.

[0045] This embodiment achieves forced uniform distribution of waste gas within the adsorption zone through the pressurization module 5, the inclined guide section 7, and the upward airflow path, laying the foundation for efficient adsorption. Secondly, the unique zeolite rotating component 8 structure in the first-stage treatment, with the rotational action of the turning support 82, actively guides and enhances the formation of a circumferential vortex in the waste gas, significantly increasing the frequency and effect of contact between pollutants and the zeolite surface, thus significantly improving the first-stage adsorption rate and capacity. Thirdly, the second-stage treatment employs a multi-segment adsorption tube 62 with spiral turning plates 66, utilizing spiral disturbance energy to effectively extend the gas-solid contact path and time, while preventing adsorbent layer caking and blockage, ensuring full utilization of the deep bed adsorption performance, achieving high purification, and effectively treating the complex VOCs components in acrylic acid waste gas. Finally, the synergistic effect of the two-stage treatment results in an overall device with advantages such as high treatment efficiency, full utilization of adsorption capacity, stable operation, and relatively low energy consumption.

[0046] Example 2, please refer to Figure 1 , Figure 5 , Figure 6 and Figure 7 Based on the above embodiments, this embodiment further refines the structure of the gas introduction module 1 and the cooling channel 4 on the basis of embodiment one.

[0047] The gas introduction module 1 includes an induced draft unit 11 and an initial temperature detection box 12. The outer shell of the initial temperature detection box 12 is provided with a main fixing frame 13 and a connecting frame 14. The main fixing frame 13 is fixedly installed with the induced draft unit 15 and supports the cooling channel 4 through the connecting frame 14. The cooling channel 4 includes an arched symmetrical guide support part 41 and its internal ventilation pipe 42. The bottom of the guide support part 41 is provided with a fixed base 43 and an external fixing piece 44 with a reinforcing structure. Multiple thermoelectric cooling plates 46 are linearly arranged on the inner wall of the arched pipe section 45. Their arc contours completely wrap around the outer wall of the ventilation pipe 42. The opening and closing of the thermoelectric cooling plates 46 are controlled in real time by a temperature sensor inside the initial temperature detection box 12. The pressurization module 5 includes a connecting box 51 connected to the outlet of the cooling channel 4, a flow guide box 52, and an air supply pump 53. The air supply pump 53 outputs the pressurized airflow through the flow guide box 52 to the inclined flow guide part 7 of the first-stage processor chassis 2.

[0048] Exhaust gas is introduced into the gas introduction module 1 by the exhaust gas generator 11 and enters the initial temperature detection box 12 for initial temperature monitoring. When the temperature sensor detects that the exhaust gas temperature exceeds the threshold, the thermoelectric cooler 46 is activated to cool the airflow in the ventilation duct 42. The cooled exhaust gas enters the pressurization module 5 along the guide support 41, is pressurized by the air supply pump 53, and then enters the inclined guide section 7 at high speed through the guide box 52. The pressurized airflow then enters the airflow lifting chamber 22 in the first-stage processing unit 2 along the path described in Embodiment 1, and the subsequent processing flow is the same as in Embodiment 1. During this process, the initial temperature detection box 12 dynamically adjusts the working state of the thermoelectric cooler 46 according to the real-time temperature to ensure a balance between cooling efficiency and energy consumption.

[0049] This embodiment combines the temperature sensing feedback mechanism of the initial temperature detection chamber 12 with the directional cooling of the thermoelectric cooling element 46, solving the problem of decreased zeolite adsorption performance caused by high-temperature waste gas directly entering the adsorption unit. The arched guide support 41 of the cooling channel 4 and the built-in ventilation pipe 42 form a stable airflow channel. The thermoelectric cooling element 46 is arranged along the arc contour to maximize the contact area, improve heat exchange efficiency, and avoid local temperature unevenness. The pressurization module 5 actively pressurizes the waste gas through the air supply pump 53, forcing the waste gas to overcome the resistance of the subsequent adsorption unit, ensuring airflow speed and treatment efficiency. The coordinated design of temperature adaptive control and pressurized delivery enables the device to adapt to the large temperature fluctuations of waste gas during the production of acrylic coatings, ensuring stable system operation.

[0050] The coordinated control of the initial temperature detection chamber 12 and the thermoelectric cooling element 46 enables precise adjustment of the exhaust gas inlet temperature, preventing high temperatures from weakening the adsorbent performance and reducing unnecessary cooling energy consumption. The combined design of the arched guide support 41 and the linearly arranged thermoelectric cooling element 46 enhances cooling uniformity through an arc-shaped fitting structure, shortens the cooling response time, and improves cooling efficiency by approximately 20% compared to traditional straight pipe cooling. Thirdly, the directional pressurization design of the air supply pump 53 and the flow guide box 52 in the pressurization module 5 optimizes the airflow dynamics distribution, ensuring that the exhaust gas forms a stable upward flow field within the inclined flow guide 7, providing a foundation for efficient adsorption in the first-stage treatment chamber 2. In addition, the external fixing plate 44 and the fixing base 43 enhance the vibration resistance and overall structural stability of the cooling channel 4, making it suitable for high-load continuous production scenarios.

[0051] Example 3, please refer to Figure 2 and Figure 3 Based on the above embodiments, this embodiment further optimizes the structure of the zeolite rotating assembly 8 in the first-order processing chassis 2.

[0052] The ventilation partition plate 21 adopts a specific arc-shaped design, and its lower surface contour precisely fits the bottom edge of the rotating disk 81 to form a dynamic seal. The flipping support 82 consists of a fixed support rod 86 vertically fixed between the rotating disks 81 and multiple L-shaped flipping rods 87, with the short side of the L-shaped flipping rods 87 facing the airflow direction. The rotating disk 81 is mounted on a fixed bearing 84 on the centerline of the first-stage treatment unit 2 via a support shaft 85. The belt drive mechanism 9 outside the unit directly drives the support shaft 85 to rotate, causing the entire zeolite wheel assembly 8 to rotate synchronously. The exhaust port 83 is opened on one of the rotating disks 81, and its periodic rotation causes it to intermittently align with the gas delivery box 88 on the side wall of the unit. This alignment rhythm is achieved by the belt drive mechanism 9 precisely controlling the rotation speed of the rotating disk 81.

[0053] After being pressurized, the exhaust gas enters the airflow lifting chamber 22 through the inclined guide section 7, and then rises along the arc-shaped surface of the ventilation partition plate 21 that conforms to the bottom contour of the rotating disk 81, spreading evenly into the adsorption chamber 23. In the rotating zeolite wheel assembly 8, the fixed support rod 86 drives the L-shaped turning rod 87 to continuously agitate the airflow. The L-shaped structure forces the exhaust gas to generate a multi-directional vortex and enhances the collision contact with the zeolite surface. During the purification process, the gas flows in the direction of rotation of the rotating disk 81. When the exhaust port 83 rotates to coincide with the position of the gas delivery box 88 at the set speed, the airflow is instantly introduced into the second-stage treatment box 6. Speed ​​control ensures that the alignment frequency of the exhaust port 83 and the gas delivery box 88 matches the gas processing flow rate, achieving continuous steady-state delivery to the secondary treatment unit. The subsequent adsorption tube 62 processing flow is the same as in Example 1.

[0054] In this embodiment, the arc-shaped lower surface of the venting partition plate 21 dynamically fits the bottom of the rotating disk 81, using contour matching to eliminate airflow short-circuit gaps and ensure that all exhaust gas flows through the zeolite zone. Secondly, the L-shaped flipping rod 87 generates a dual disturbance effect: the horizontal support rod generates axial vortices, while the vertical short side induces radial shear turbulence, significantly improving gas-solid mass transfer efficiency. By precisely controlling the rotational speed of the rotating disk 81 (n=60f / t, where f is the set alignment frequency and t is the time required for a single alignment), the periodic opening and closing synchronization of the exhaust port 83 and the gas delivery box 88 is achieved. The centrifugal effect creates a transient high-pressure difference to drive the directional transfer of gas, effectively avoiding the airflow pulsation problem of conventional valves.

[0055] Example 4, please refer to Figure 4 and Figure 8 Based on the above embodiments, this embodiment makes refined improvements to the adsorption tube 62 of the second-stage processing chassis 6.

[0056] The adsorption tube 62 is fixedly positioned by a bottom support plate 63. Its inner cavity is divided into multiple branch sections along the axial direction. Each branch section has a cold air injection box 69 and a temperature detector 67 with a sensing probe 68 installed on its side wall. The driver 64 is fixed to the end of the adsorption tube 62 and drives the steering shaft 65 to drive the spiral tumbling plate 66 to rotate synchronously in each branch section. The exhaust module 3 is provided with an exhaust connection port 31, which integrates an online concentration monitor 32. This monitor detects the concentration of pollutants in the exhaust in real time and feeds the signal back to the driver 64. In addition, each branch section independently monitors temperature data through the sensing probe 68 of the temperature detector 67 and controls the cooling power output of the corresponding cold air injection box 69 in a coordinated manner.

[0057] During operation, the gas treated in the first stage enters the adsorption tube 62 of the second-stage treatment chamber 6. The driver 64 drives the steering shaft 65 to rotate the spiral tumbling vane 66, forcing the airflow into a spiral propulsion flow pattern. Temperature detectors 67 in each branch section monitor the temperature in real time through sensing probes 68. If the temperature exceeds the set threshold, the corresponding cold gas injection chamber 69 is activated and injects cold air into the tube to maintain the optimal operating temperature range of the adsorbent. The treated gas is collected in the exhaust module 3. The online concentration monitor 32 detects the outlet concentration. If the concentration does not meet the standard, the signal is transmitted to the driver 64, which dynamically increases the rotation speed of the spiral tumbling vane 66 to extend the gas residence time. The qualified gas is finally discharged through the exhaust port 31.

[0058] This embodiment optimizes adsorption depth through temperature control and closed-loop concentration feedback in each zone. The multi-section design within the long adsorption tube 62, combined with an independent cold gas injection box 69, utilizes the sensing probe 68 of the temperature detector 67 to independently monitor and control the temperature of each section, ensuring that the adsorption reaction in different sections is within the optimal temperature window and preventing adsorbent desorption failure due to localized overheating. The dynamic rotation speed adjustment of the spiral tumbling plate 66 is based on real-time feedback from the online concentration monitor 32. By changing the spiral angular velocity (ω=k·C, k is the correction coefficient, C is the concentration deviation), the axial flow velocity and lateral mixing intensity of the gas are adjusted, achieving adaptive extension of the adsorption path. The instantaneous hot and cold airflow counterbalancing mechanism (cold gas injection amount Q=ΔT·α, ΔT is the temperature difference, α is the compensation coefficient) precisely offsets the waste heat of the exhaust gas, maintaining stable adsorbent activity.

[0059] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within the present invention.

[0060] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A device for treating waste gas from acrylic paint production, comprising a gas introduction module (1), a cooling channel (4), a first-stage processing machine box (2), a second-stage processing machine box (6), and an exhaust module (3) connected in sequence, characterized in that: the output end of the cooling channel (4) is connected to the inclined flow guide part (7) at the bottom of the first-stage processing machine box (2) through a booster module (5), forming an upward airflow path; the inner cavity of the first-stage processing machine box (2) is divided into a bottom airflow lifting chamber (22) and a top adsorption chamber (23) by an arc-shaped air passage partition plate (21), wherein the airflow lifting chamber (22) is directly connected to the inclined flow guide part (7), and the adsorption chamber (23) contains a rotatable zeolite wheel rotating assembly (8); the zeolite wheel rotating assembly (8) comprises two coaxially arranged circular rotating discs (81), a plurality of overturning members (82) fixed at equal angles between the two rotating discs (81), and the edge of the rotating disc (81) is sealingly attached to the inner wall of the adsorption chamber (23); a belt transmission mechanism (9) is provided outside the box to drive the rotating disc (81) to rotate; the waste gas is accelerated by the booster module (5) and then enters the airflow lifting chamber (22) along the inclined flow guide part (7), and when passing through the zeolite wheel rotating assembly (8) from bottom to top, a circular vortex is formed under the action of the overturning members (82); an exhaust slot (83) is formed on one of the rotating discs (81), and when the exhaust slot (83) is aligned with the gas conveying machine box (88) on the side wall of the box, the gas is introduced into the second-stage processing machine box (6); the second-stage processing machine box (6) comprises a guide box (61) connected to the gas conveying machine box (88) and a multi-section adsorption long pipe (62), and the adsorption long pipe (62) contains a turning shaft (65) and a spiral overturning piece (66); the gas conveying machine box (88) is connected to the exhaust module (3). The gas introduction module (1) comprises a gas introduction machine group (11) and a preliminary temperature detection box (12), and the outer shell of the preliminary temperature detection box (12) is provided with a main fixed frame (13) and a connecting frame (14); the main fixed frame (13) is provided with a gas introduction machine cylinder (15) and supports the cooling channel (4) through the connecting frame (14). The cooling channel (4) comprises an arch-shaped symmetrical guide support part (41) and an internal air passage (42) therein, and the bottom of the guide support part (41) is provided with a fixed base (43) and an external fixed piece (44); a plurality of thermoelectric refrigeration pieces (46) are linearly arranged on the inner wall of an arch-shaped passage interval (45), which completely wraps the outer wall of the air passage (42), and the thermoelectric refrigeration pieces (46) are controlled to open and close by the sensing signal of the preliminary temperature detection box (12). The booster module (5) comprises a connecting box (51) connected to the cooling channel (4), a flow guide box (52), and a gas supply pump (53), and the airflow is input into the inclined flow guide part (7) after being pressurized by the gas supply pump (53). The arc-shaped lower surface of the air passage partition plate (21) is attached to the bottom profile of the rotating disc (81), and the overturning member (82) comprises a fixed support rod (86) and a plurality of vertically fixed L-shaped overturning rods (87). The rotating disc (81) is installed on the fixed bearing (84) at the center line of the box through a support shaft (85), and the belt transmission mechanism (9) drives the support shaft (85) to rotate. ​ 2. The acrylic paint production waste gas treatment device according to claim 1, characterized in that: ​ 3. The acrylic paint production waste gas treatment device according to claim 2, characterized in that: ​ ​ 4. The acrylic paint production waste gas treatment device according to claim 1, characterized in that: ​ 5. The acrylic paint production waste gas treatment device according to claim 1, characterized in that: ​ 6. The acrylic paint production waste gas treatment device according to claim 5, characterized in that: ​ The periodic alignment of the exhaust slot (83) and the gas conveying machine box (88) is controlled by the rotating speed of the rotating disc (81).

7. The acrylic paint production waste gas treatment device according to claim 1, characterized in that: The adsorption long tube (62) of the second-order processing machine box (6) is fixed by the supporting bottom plate (63), the driver (64) drives the rotating shaft (65) to drive the spiral turning blade (66), the inner cavity of the adsorption long tube (62) is divided into multiple branch intervals, the side wall of each branch interval is provided with the cold gas injection machine box (69) and the temperature detector (67) with the sensing probe (68).

8. The acrylic paint production waste gas treatment device according to claim 7, characterized in that: The exhaust module (3) is provided with an exhaust connection port (31), which is provided with an online concentration monitor (32) therein. The online concentration monitor (32) feeds back a signal to the driver (64) to dynamically adjust the rotating speed of the spiral turning blade (66).

9. The acrylic paint production off gas treatment device according to claim 8, characterized in that: Each branch interval independently monitors the temperature through the sensing probe (68) of the temperature detector (67) and controls the refrigeration intensity of the corresponding cold gas injection machine box (69) in linkage.

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