An acrylic paint production waste gas treatment device

Abstract

The present application relates to waste gas treatment technical field, specifically a kind of acrylic paint production waste gas treatment device, including the gas introduction module, cooling channel, first-order processing machine box, second-order processing machine box and exhaust module connected in turn.Gas introduction module realizes waste gas precooling by initial temperature detection box linkage thermoelectric refrigeration piece;Cooling channel adopts arched guide support structure integrated linear arrangement thermoelectric refrigeration piece, accurately controls airflow temperature.First-order processing machine box is divided into airflow lifting chamber and adsorption chamber by arc-shaped ventilation partition plate, and built-in zeolite wheel rotation assembly, by speed control, waste gas is formed into circumferential vortex to strengthen adsorption, and is directionally transported to second-order processing machine box by periodic alignment exhaust slot.The temperature control system is arranged in the multi-section adsorption long pipe of second-order processing machine box, and the adsorption temperature is stabilized by the linkage cold air injection machine box of independent sensing probe in each branch area, and the speed of screw turning blade is dynamically adjusted by driver according to the online concentration feedback of exhaust module.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of waste gas treatment, and particularly relates to an acrylic coating production waste gas treatment device. BACKGROUND

[0002] In the prior art, fixed bed adsorption devices are widely used for volatile organic compound (VOCs) waste gas treatment, especially in the field of acrylic coating industry waste gas treatment. Such devices are usually designed as single-stage or multi-stage static adsorption beds in series, and rely on packed activated carbon or zeolite adsorbents to passively intercept pollutants.

[0003] However, such technical equipment has component technical defects. When treating acrylic waste gas containing high-concentration esters and benzene series, a large amount of adsorption heat is released on the surface of the adsorbent due to chemical reactions, causing the bed temperature to locally rise sharply (measured to be above 80 DEG C). The high-temperature environment not only causes the adsorbent to desorb and fail, but also promotes the polymerization reaction of residual monomers to block the pores, significantly reducing the adsorption efficiency and service life. The above defects cause the existing devices to have the risk of sharp reduction in purification efficiency and exhaust concentration exceeding the standard. SUMMARY

[0004] The present application aims to provide an acrylic coating production waste gas treatment device to solve the problems in the background art.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme:

[0006] An acrylic coating production waste gas treatment device comprises, in sequence, a gas introduction module, a cooling channel, a first-order processing machine box, a second-order processing machine box and an exhaust module,

[0007] The output end of the cooling channel is connected to the inclined flow guide portion at the bottom of the first-order processing machine box through a booster module, forming an upward gas flow path;

[0008] The inner cavity of the first-order processing machine box is divided into a bottom gas flow lifting chamber and a top adsorption chamber by an arc-shaped air passage partition plate, wherein the gas flow lifting chamber is directly connected to the inclined flow guide portion, and the adsorption chamber contains a rotatable zeolite wheel rotating assembly;

[0009] The zeolite wheel rotating assembly comprises two coaxially arranged circular rotating discs, and a plurality of turning branches are fixedly connected between the two rotating discs at equal angles, and the edges of the rotating discs are sealingly attached to the inner wall of the adsorption chamber;

[0010] A belt transmission mechanism is arranged outside the box body to drive the rotating discs to rotate, and the waste gas is accelerated by the booster module and enters the gas flow lifting chamber along the inclined flow guide portion, and forms a circular vortex when passing through the zeolite wheel rotating assembly from bottom to top under the action of the turning branches;

[0011] One of the rotating disc is provided with an exhaust slot, when the exhaust slot is aligned with the gas delivery machine box of the side wall of the box, the gas is introduced into the second-order processor box;

[0012] The second-order processor box comprises a guide box connected with the gas delivery machine box and a multi-section adsorption long tube, the adsorption long tube is provided with a steering shaft and a spiral turning piece, and the end is connected with an exhaust module.

[0013] As a further scheme of the present application: the gas introduction module comprises a gas introduction machine group and a initial temperature detection box, the initial temperature detection box is provided with a main fixed frame and a connecting frame, the main fixed frame is installed with the gas introduction machine cylinder and supports the cooling channel through the connecting frame.

[0014] As a further scheme of the present application: the cooling channel comprises an arch-shaped symmetrical guide support part and an internal air pipe, the bottom of the guide support part is provided with a fixed base and an external fixed sheet;

[0015] A plurality of thermoelectric refrigeration pieces are linearly arranged on the inner wall of the arch-shaped pipe area, the arc-shaped profile completely wraps the outer wall of the air pipe, and the thermoelectric refrigeration pieces are controlled to open and close by the sensing signal of the initial temperature detection box.

[0016] As a further scheme of the present application: the booster module comprises a connecting box connected with the cooling channel, a guide box and a gas supply pump, the gas flow is input into the inclined guide part after being pressurized by the gas supply pump.

[0017] As a further scheme of the present application: the arc-shaped lower surface of the air separation plate is matched with the bottom profile of the rotating disc, and the turning support part comprises a fixed support rod and a plurality of vertically fixed L-shaped turning rods.

[0018] As a further scheme of the present application: the rotating disc is installed on the fixed bearing of the center line of the box through the support shaft, and the belt transmission member drives the support shaft to rotate;

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

[0020] As a further scheme of the present application: the adsorption long tube of the second-order processor box is fixed by a support bottom plate, a driver drives the steering shaft to drive the spiral turning piece, the inner cavity of the adsorption long tube is divided into a plurality of branch areas, the side wall of each branch area is provided with a cold gas injection machine box and a temperature detector with a sensing probe.

[0021] As a further scheme of the present application: the exhaust module is provided with an exhaust connecting port, and an online concentration monitor is arranged in the exhaust connecting port.

[0022] The online concentration monitor feeds back a signal to the driver, and the rotating speed of the spiral turning piece is dynamically adjusted.

[0023] As a further scheme of the present application: the temperature of each branch area is independently monitored by the sensing probe of the temperature detector, and the refrigeration intensity of the corresponding cold gas injection machine box is controlled in linkage.

[0024] Compared with the prior art, the application has the following beneficial effects:

[0025] I. An active zeolite wheel rotation adsorption system based on airflow dynamics reconstruction is constructed: Unlike traditional static adsorption beds, the composite guide flow design of the inclined guide flow structure and the arc-shaped partition plate forcibly forms a downward directional flow field; At the same time, the rotating zeolite wheel assembly with precise contour matching continuously generates multi-dimensional turbulence in high-speed rotation, which causes high-frequency shear renewal between the waste gas and the adsorbent, so as to improve the gas phase mass transfer efficiency and break through the bottleneck of low-concentration VOCs adsorption rate.

[0026] II. An intelligent temperature control-disturbance coupling system of a multi-section deep bed adsorption long pipe is designed: By deploying independent temperature sensors and cold gas injection units in the axial discrete multi-branch intervals, millimeter-level accurate partition regulation of the adsorption reaction zone temperature is realized, and the problem of local failure of the adsorbent caused by adsorption heat accumulation is solved; At the same time, combined with the closed-loop feedback control of the rotation speed of the spiral turning blade and the concentration of pollutants, when the online concentration monitor detects residual pollutants at the end, the rotation speed of the spiral turning blade is immediately increased, so as to significantly reduce the redundant filling amount of the adsorbent under the premise of ensuring emission standard.

[0027] III. A multi-parameter collaborative response mechanism for the whole process is established: The pre-cooling linkage system of the initial temperature detection module and the thermoelectric cooling fin can adaptively adjust the inlet temperature fluctuation to provide the best working conditions for the adsorption section; The rotation speed of the zeolite wheel assembly and the exhaust timing control technology realize the pulse-type directional transfer of gas without valves through precise calculation of centrifugal force and air pressure balance; Finally, the real-time optimization of the treatment parameters is formed through the 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 only exemplary and explanatory, and cannot limit the present application. BRIEF DESCRIPTION OF DRAWINGS

[0029] The accompanying drawings, which are incorporated into the specification and constitute part of it, illustrate embodiments consistent with the present application and, together with the specification, serve to explain the principles of the application. At the same time, these drawings and the written description are not intended to limit the scope of the inventive concept in any way by reference to a specific embodiment, but to illustrate the inventive concept to those skilled in the art.

[0030] Figure 1 The overall structure schematic diagram of the acrylic paint production waste gas treatment device provided by the embodiment of the present application is shown.

[0031] Figure 2 The internal structure schematic diagram of the first-order processing machine box provided by the embodiment of the present application is shown. 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 waste gas treatment device for acrylic coating production, comprising a gas introduction module (1), a cooling channel (4), a first-stage treatment unit (2), a second-stage treatment unit (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 guide section (7) at the bottom of the first-stage processor chassis (2) through the pressurization module (5) to form an airflow path from bottom to top; The inner cavity of the first-stage processing chassis (2) is divided into a bottom airflow lifting chamber (22) and a top adsorption chamber (23) by an arc-shaped ventilation partition plate (21). The airflow lifting chamber (22) is directly connected to the inclined guide section (7), and the adsorption chamber (23) contains a rotatable zeolite wheel assembly (8). The zeolite rotating assembly (8) includes two coaxially arranged circular rotating disks (81), and multiple flipping supports (82) fixed between the two rotating disks (81) and distributed at equal angles. The edges of the rotating disks (81) are sealed and fitted to the inner wall of the adsorption chamber (23). The box body is equipped with a belt drive mechanism (9) that drives the rotating disk (81) to rotate. After the exhaust gas is accelerated by the booster module (5), it enters the airflow lifting chamber (22) along the inclined guide section (7). When it passes through the zeolite wheel assembly (8) from bottom to top, it is subjected to the action of the overturning support (82) to form a circumferential vortex. An exhaust port (83) is provided on one of the rotating disks (81). When the exhaust port (83) is rotated to be aligned with the gas delivery box (88) on the side wall of the box, the gas is introduced into the second-stage processing box (6). The second-stage processing chassis (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 tumbling plate (66), and the end is connected to the exhaust module (3). The cooling channel (4) includes an arched symmetrical guide support (41) and its internal ventilation pipe (42). The bottom of the guide support (41) is provided with a fixed base (43) and an external fixing plate (44). Multiple thermoelectric cooling elements (46) are linearly arranged on the inner wall of the arched pipe section (45), and their arc-shaped contours completely wrap around the outer wall of the ventilation pipe (42). The thermoelectric cooling elements (46) are controlled to open and close by the sensing signal of the initial temperature detection box (12). The lower arc-shaped surface of the ventilation partition plate (21) fits the bottom contour of the rotating disk (81), and the flipping support (82) includes a fixed support rod (86) and multiple vertically fixed L-shaped flipping rods (87). The adsorption tube (62) of the second-stage processing chassis (6) is fixed by the support base plate (63). The driver (64) drives the steering shaft (65) to drive the spiral flipping plate (66). The inner cavity of the adsorption tube (62) is divided into multiple branch sections. Each branch section is equipped with a cold air injection box (69) and a temperature detector (67) with a sensing probe (68) on its side wall. Each branch section independently monitors the temperature through the sensing probe (68) of the temperature detector (67) and controls the cooling intensity of the corresponding cold air injection box (69) in conjunction with the temperature.

2. The acrylic coating production waste gas treatment device according to claim 1, characterized in that: The gas introduction module (1) includes a gas bleed unit (11) and a primary temperature detection box (12). The primary temperature detection box (12) has a main fixing frame (13) and a connecting frame (14) on its outer shell. The main fixing frame (13) is equipped with a gas bleed cylinder (15) and supports the cooling channel (4) through the connecting frame (14).

3. The acrylic coating production waste gas treatment device according to claim 1, characterized in that: The booster module (5) includes a connecting box (51) connecting to the cooling channel (4), a guide box (52) and an air supply pump (53). The airflow is boosted by the air supply pump (53) and then input into the inclined guide section (7).

4. The acrylic coating production waste gas treatment device according to claim 1, characterized in that: The rotating disk (81) is mounted on the fixed bearing (84) on the center line of the box via the support shaft (85), and the belt drive component (9) drives the support shaft (85) to rotate. The periodic alignment of the exhaust port (83) and the gas delivery box (88) is controlled by the rotation speed of the rotating disk (81).

5. The acrylic coating production waste gas treatment device according to claim 1, characterized in that: The exhaust module (3) is equipped with an exhaust connection port (31), which contains an online concentration monitor (32). The online concentration monitor (32) sends a feedback signal to the driver (64) to dynamically adjust the rotation speed of the spiral tumbling plate (66).

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