Styrene waste gas treatment equipment

Abstract

The invention relates to the technical field of waste gas treatment, in particular to styrene waste gas treatment equipment which comprises a shell, a desorption inlet shell, a desorption outlet shell and a zeolite cylinder, the zeolite cylinder is inserted into the shell in a sealed mode and can rotate around the axis of the zeolite cylinder, and the interior of the shell is divided into a gas inlet chamber and a gas outlet chamber; the zeolite cylinder is provided with a plurality of zeolite units arranged in the circumferential direction, each zeolite unit is provided with a through hole, and the through holes are communicated with the air inlet chamber and the air outlet chamber; the zeolite units are of U-shaped strip structures, openings of the zeolite units face outwards, one ends of the zeolite units are large, the other ends of the zeolite units are small, and the adjacent zeolite units are upside down. Compared with the prior art, under the same turning radius, the U-shaped zeolite unit with one large end and the other small end has a larger windward area than a square zeolite unit, and under the same windward area or the same volume, the zeolite unit has a smaller size, so that the manufacturing and mounting cost of equipment can be reduced, and the occupied space can be reduced.

Description

Technical Field

[0001] This invention relates to the field of waste gas treatment technology, and in particular to a styrene waste gas treatment device. Background Technology

[0002] Styrene, as a key organic compound, has wide applications in the industrial field.

[0003] The styrene production process involves complex chemical reactions and technological steps, inevitably generating a large amount of waste gas. This waste gas typically contains volatile organic compounds such as styrene and benzene. These substances are not only highly toxic, posing a dual threat to human health and the ecological environment, but also emit foul odors, severely damaging air quality in surrounding areas and disrupting residents' daily lives. Therefore, effective treatment of these waste gases has become an indispensable and crucial step in the styrene production process to achieve green and safe emissions.

[0004] In related technologies, such as Chinese patent CN207254040U, a cylindrical zeolite rotor concentrator is disclosed. When the cylindrical zeolite rotor concentrator is in use, the waste gas is first introduced from the adsorption inlet, and the waste gas particles are adsorbed onto the zeolite module by the rotation of the zeolite module. The treated waste gas is then discharged from the adsorption outlet, and then high-temperature air is introduced through the desorption inlet to desorb the zeolite module.

[0005] However, to ensure sufficient purification of the exhaust gas, it is necessary to guarantee a sufficient residence time within the zeolite module. This allows for adequate contact and adsorption of pollutants with the zeolite. Consequently, the aforementioned cylindrical zeolite rotary concentrator requires a sufficiently large zeolite module volume, primarily reflected in the module's thickness, height, and the overall rotation radius of the equipment. However, the zeolite module's thickness (i.e., the distance the exhaust gas travels through) cannot be arbitrarily increased. Excessive thickness leads to a sharp increase in wind resistance as the exhaust gas passes through the module. This increased resistance not only increases energy consumption but may also affect the exhaust gas treatment efficiency and normal flow. Given this situation, the only way to increase the windward area is to increase the height of the zeolite module and the overall rotation radius of the equipment. However, as the airflow increases, the rotation radius and zeolite module height become excessive to meet the windward area requirements. This directly results in a dramatic increase in the overall size of the equipment, thereby increasing manufacturing and installation costs and occupying a significant amount of space. Summary of the Invention

[0006] Therefore, it is necessary to provide a styrene waste gas treatment device to address the problems of high equipment installation costs and low space utilization in the current styrene waste gas treatment process.

[0007] The above objectives are achieved through the following technical solutions: A styrene waste gas treatment device, the styrene waste gas treatment device comprising: The housing has an adsorption inlet and an adsorption outlet; A zeolite cylinder is sealed and inserted inside the outer shell, and is rotatable around its own axis, dividing the interior of the outer shell into an inlet chamber and an outlet chamber. The inlet chamber is located on the outer side and communicates with the adsorption inlet, while the outlet chamber is located on the inner side and communicates with the adsorption outlet. The zeolite cylinder has multiple zeolite units arranged circumferentially, each of which has multiple through holes that connect the inlet chamber and the outlet chamber. Each zeolite unit has a U-shaped strip structure with its opening facing outwards, and one end of the zeolite unit is larger than the other. Adjacent zeolite units are upside down and form a flow channel between them, which communicates with the through holes and the outlet chamber. The desorption shell is sealed and inserted into the gas outlet chamber, and forms a first chamber with the inner peripheral wall of the zeolite cylinder; the desorption shell has a desorption inlet, which communicates with the first chamber and is configured to receive external hot gas; The desorbed shell is sealed and inserted into the air inlet chamber, and forms a second chamber with the outer peripheral wall of the zeolite cylinder. The second chamber communicates with the first chamber through the through hole. The desorbed shell has a desorption outlet, which communicates with the second chamber.

[0008] Furthermore, the U-shaped inner root of the zeolite unit is a conical surface, and it slopes from the outside to the inside or from the inside to the outside from its small end to its large end.

[0009] Furthermore, each zeolite unit has two support rods inserted into its U-shaped opening. The two support rods at the same zeolite unit's U-shaped opening are arranged radially along the zeolite cylinder, and the support rods extend in a direction parallel to the axis of the zeolite cylinder. Each support rod has multiple air guide plates arranged axially. The support rods are rotatable around their own axis and have corresponding first and second states before and after rotation. In the first state, the air guide plates on the two support rods at the same zeolite unit's U-shaped opening have a preset included angle and are configured to guide the exhaust gas to the two U-shaped inner surfaces of the zeolite unit. In the second state, the surface of the air guide plate extends radially along the zeolite cylinder. The styrene exhaust gas treatment equipment also includes a rotating mechanism configured to drive the support rods to rotate.

[0010] Furthermore, the support rod is capable of sliding along its own axis; the rotating mechanism includes a stop block disposed on the desorbed shell and capable of forming a stop engagement with the support rod; the zeolite cylinder is provided with multiple spiral grooves; each support rod is provided with a sliding protrusion, which is slidably inserted into the spiral groove; a first elastic element is connected between each support rod and the zeolite cylinder, and under the action of the first elastic element, the support rod has a tendency to return to its original position after moving along its own axis.

[0011] Furthermore, the styrene waste gas treatment equipment also includes a support located within the second chamber, which can slide parallel to the axis of the zeolite cylinder and rotate about the axis of the zeolite cylinder. The support is equipped with an active telescopic rod extending radially along the zeolite cylinder and capable of extension and retraction. The active telescopic rod is equipped with two brushes configured to clean the two U-shaped inner surfaces of the same zeolite unit, and each brush can rotate about its own axis. The styrene waste gas treatment equipment also includes a first transmission mechanism and a second transmission mechanism. The first transmission mechanism is configured to drive the support to rotate, and the second transmission mechanism is configured to drive the support to slide.

[0012] Furthermore, the active telescopic rod is provided with two elastic telescopic rods, which are arranged perpendicularly to the active telescopic rod; the brush is sleeved on the elastic telescopic rod; the brush is frustum-shaped with the small end facing outward; each brush has a spiral first sub-brush and a spiral second sub-brush, the first sub-brush being positioned further outward than the second sub-brush, and the spiral directions of the first and second sub-brushes being opposite, the first sub-brush being configured to guide impurities from the inside out.

[0013] Furthermore, the first transmission mechanism includes a fixed base located within the second chamber; the fixed base is provided with a sliding groove, which is an arc-shaped structure and coaxially arranged with the zeolite cylinder; the zeolite cylinder is provided with multiple slots along its circumference, and the slots correspond to the zeolite units; a slider is elastically slidably inserted into the sliding groove; a locking rod is provided on the slider, which extends along the radial direction of the zeolite cylinder and can elastically slide along the radial direction of the zeolite cylinder, and can engage with the slots; the support is provided on the slider.

[0014] Furthermore, the second transmission mechanism includes two screws, both of which are mounted on the slider. The screws are parallel to the axis of the zeolite cylinder and can rotate around their own axis. A first gear is fixedly sleeved on each screw. A second gear is mounted on the slider, which can rotate around its own axis and simultaneously meshes with the two first gears. The support is threaded onto both screws.

[0015] Furthermore, the support can slide back and forth in a direction parallel to the axis of the zeolite cylinder.

[0016] Furthermore, the styrene waste gas treatment equipment also includes a drive unit configured to provide a driving force for rotating the zeolite cylinder.

[0017] The beneficial effects of this invention are: This invention relates to a styrene waste gas treatment device. By setting the zeolite unit into a U-shaped strip structure with the opening facing outward, one end of the zeolite unit is larger and the other end is smaller, and adjacent zeolite units are installed upside down. Compared with the prior art, with the same gyration radius of the zeolite cylinder, the U-shaped zeolite unit has a larger windward area; with the same windward area or the same volume, the U-shaped zeolite unit has a smaller size, thereby reducing the manufacturing and installation costs of the equipment and reducing the space occupied.

[0018] Furthermore, by setting the U-shaped inner root of the zeolite unit as a conical surface, and tilting it from the outside to the inside from the small end to the large end, during the process of exhaust gas entering the shell, under the guidance of this conical surface, on the one hand, the exhaust gas can move along the axial direction, thereby improving the uniformity of the exhaust gas distribution in the axial direction. This can improve both the treatment efficiency of the exhaust gas and the utilization rate of the zeolite unit. On the other hand, impurities contained in the exhaust gas can move along the axial direction, thereby avoiding accumulation in one place and causing excessive blockage of the zeolite unit.

[0019] Furthermore, by setting a support rod, which has a first state and a second state, when the support rod is located in the area outside the second chamber of the exhaust chamber, the support rod is in the first state. At this time, the air guide plates on the two support rods at the U-shaped opening of the same zeolite unit have a preset included angle and are configured to guide the exhaust gas to the two U-shaped inner surfaces of the zeolite unit respectively, thereby improving the adsorption efficiency of the zeolite unit for exhaust gas. When the support rod is located in the second chamber, the support rod is in the second state. At this time, the surface of the air guide plate extends along the radial direction of the zeolite cylinder, thereby avoiding affecting the flow of hot gas.

[0020] Furthermore, by setting up a brush, the U-shaped inner surface of the zeolite unit in the second chamber can be cleaned, which helps to ensure the desorption efficiency of the zeolite unit. In conjunction with the blowing of hot air, the cleaned impurities can be blown away to prevent them from adhering to the zeolite unit again and affecting the desorption and adsorption effects of the zeolite unit.

[0021] Furthermore, by designing the brushes to be frustum-shaped with the smaller end facing outwards, their conical structure can better conform to the side of the zeolite unit, thereby improving the cleaning effect. Each brush is equipped with a spiral first sub-brush and a spiral second sub-brush, with the first sub-brush positioned further outwards than the second sub-brush. The spiral directions of the first and second sub-brushes are opposite. The spiral structure of the first sub-brush can quickly guide impurities in the upper middle and outer parts of the zeolite unit outwards, while the spiral structure of the second sub-brush can quickly guide impurities in the upper middle and outer parts of the zeolite unit inwards. Combined with the blowing of hot air, the cleaned impurities can be blown away, thus shortening the movement path of the impurities and improving the cleaning efficiency. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural schematic diagram of the styrene waste gas treatment equipment provided in an embodiment of the present invention; Figure 2 This is a three-dimensional cross-sectional view of the styrene waste gas treatment equipment provided in an embodiment of the present invention; Figure 3 This is a three-dimensional cross-sectional view of a styrene waste gas treatment device with its outer shell removed, as provided in an embodiment of the present invention. Figure 4 for Figure 3 A magnified schematic diagram of the structure at point S in the middle; Figure 5 for Figure 3 A magnified schematic diagram of the structure at point T in the middle; Figure 6 A schematic diagram of the exploded structure of a styrene waste gas treatment device with its outer shell removed, provided in an embodiment of the present invention. Figure 7 for Figure 6 A magnified schematic diagram of the structure at the U-shaped section; Figure 8 for Figure 6 A magnified schematic diagram of the structure at point V in the middle; Figure 9 This is a cross-sectional view of a styrene waste gas treatment device with its outer shell removed, as provided in an embodiment of the present invention. Figure 10 for Figure 9 A magnified schematic diagram of the structure at point W in the middle; Figure 11 for Figure 10 A magnified schematic diagram of the structure at point X in the middle; Figure 12 for Figure 10 A magnified schematic diagram of the structure at point Y in the middle; Figure 13 This is a three-dimensional cross-sectional view of a styrene waste gas treatment device with its outer shell removed, as provided in an embodiment of the present invention. Figure 14 for Figure 13 A magnified schematic diagram of the structure at point Z in the middle.

[0023] in: 1. Outer shell; 101. Adsorption inlet; 102. Adsorption outlet; 103. Support ring; 2. Zeolite cylinder; 201. Inlet chamber; 202. Outlet chamber; 203. Zeolite unit; 2031. Flow channel; 204. Top ring plate; 205. Bottom circular plate; 206. Fixing component; 3. Desorption inlet; 301. First chamber; 302. Desorption inlet; 4. Desorption outlet; 401. Second chamber; 402. Desorption outlet; 5. Support rod; 501. Air guide plate; 6. Rotating mechanism; 601. Stop block; 602. Spiral groove; 603. Sliding protrusion; 604. First tension spring; 7. Support; 8. 9. Active telescopic rod; 901. Brush; 902. First dividing brush; 903. Second dividing brush; 10. First transmission mechanism; 1001. Fixed base; 1002. Slide groove; 1003. Slot; 1004. Slider; 1005. Locking rod; 10051. Compression spring; 1006. Second tension spring; 11. Second transmission mechanism; 1101. Screw; 1102. First gear; 1103. Second gear; 1104. Third drive motor; 12. Elastic telescopic rod; 13. First drive motor; 14. Fourth drive motor; 15. Rotating shaft; 16. First pulley; 17. Second pulley; 18. Belt. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0025] The component designations used in this document, such as "first" and "second," are merely for distinguishing the described objects and do not have any sequential or technical meaning. The terms "connection" and "linkage," unless otherwise specified, include both direct and indirect connections (linkages). In the description of this invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description. They 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, and therefore should not be construed as limiting the invention.

[0026] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0027] The following reference Figures 1 to 14 The present invention describes a styrene waste gas treatment device, which is particularly suitable for the treatment of styrene waste gas, and of course, it is also suitable for the treatment of other organic waste gases.

[0028] Specifically, the styrene waste gas treatment equipment includes an outer shell 1, with an adsorption inlet 101 on the rear side wall of the outer shell 1 for receiving styrene waste gas; and an adsorption outlet 102 on the top of the outer shell 1 for discharging the adsorbed styrene waste gas. A zeolite cylinder 2 is vertically placed inside the outer shell 1 for adsorbing the styrene waste gas. The zeolite cylinder 2 can rotate around its own axis to switch positions corresponding to the adsorption inlet 101. The zeolite cylinder 2 divides the interior of the outer shell 1 into an inlet chamber 201 and an outlet chamber 202. The inlet chamber 201 is located on the outer side and communicates with the adsorption inlet 101, facilitating the introduction of styrene waste gas into the vicinity of the zeolite cylinder 2 for adsorption. The outlet chamber 202 is located on the inner side and communicates with the adsorption outlet 102, facilitating the discharge of the adsorbed styrene waste gas.

[0029] A desorption shell 3 is sealed and fixedly inserted in the gas outlet chamber 202. The desorption shell 3 and the adsorption inlet 101 are arranged opposite to each other. The desorption shell 3 has a C-shaped structure and both ends face forward. The upper end of the desorption shell 3 passes through the adsorption outlet 102 during installation. The lower end of the desorption shell 3 forms a first chamber 301 with the inner peripheral wall of the zeolite cylinder 2 during installation. A desorption inlet 302 is provided at the upper end of the desorption shell 3. The desorption inlet 302 communicates with the first chamber 301 and is used to receive external hot gas, so that hot gas can be introduced into the first chamber 301 to desorb the zeolite cylinder 2. A desorption shell 4 is sealed and fixedly inserted in the air inlet chamber 201. The desorption shell 4 and the desorption inlet shell 3 are arranged opposite to each other. The desorption shell 4 has a T-shaped structure. When installed, the large end of the desorption shell 4 is set to the rear and forms a second chamber 401 with the outer peripheral wall of the zeolite cylinder 2. The second chamber 401 is connected to the first chamber 301, so as to receive the hot gas after desorption from the zeolite cylinder 2. When installed, the small end of the desorption shell 4 is set to the front and penetrates the front side wall of the outer shell 1. A desorption outlet 402 is formed at the small end of the desorption shell 4. The desorption outlet 402 is connected to the second chamber 401 and is used to discharge the hot gas after desorption from the zeolite cylinder 2.

[0030] The zeolite cylinder 2 includes a top ring plate 204, a bottom circular plate 205, and multiple zeolite units 203. The top ring plate 204 and the bottom circular plate 205 are coaxially arranged, with the top ring plate 204 located above the bottom circular plate 205. Multiple zeolite units 203 are arranged circumferentially at intervals and are all located between the top ring plate 204 and the bottom circular plate 205. Each zeolite unit 203 has multiple through holes that connect the inlet chamber 201 and the outlet chamber 202, ensuring that styrene waste gas entering the inlet chamber 201 is adsorbed by the zeolite unit 203 and then discharged into the outlet chamber 202 through the through holes. Adjacent zeolite units 203 are sealed with fixing members 206. The fixing component 206 has a C-shaped structure with the opening facing inward. During installation, the top of the fixing component 206 is fixed to the bottom of the top ring plate 204 with bolts, and the bottom is fixed to the top of the bottom circular plate 205 with bolts. This facilitates the fixing of the zeolite unit 203 between the top ring plate 204 and the bottom circular plate 205. The U-shaped outer surfaces of the fixing component 206 and the adjacent zeolite unit 203 together form a flow channel 2031. The flow channel 2031 is connected to the through hole and the outlet chamber 202, ensuring that the styrene waste gas entering the inlet chamber 201 is adsorbed by the zeolite unit 203 and then discharged into the outlet chamber 202 through the through hole and the flow channel 2031.

[0031] In the field of styrene waste gas treatment, to ensure sufficient purification of styrene waste gas, it is necessary to guarantee sufficient residence time of the styrene waste gas in the zeolite unit 203 so that pollutants can fully contact and be adsorbed by the zeolite unit 203. Generally, the larger the treatment air volume, the larger the required volume of the zeolite cylinder 2. This is mainly reflected in parameters such as the radial thickness, height, and circumferential width of the zeolite unit 203. However, the radial thickness of the zeolite unit 203 (i.e., the distance the styrene waste gas passes through) cannot be increased arbitrarily, because an excessively thick radial thickness will cause a sharp increase in wind resistance when the styrene waste gas passes through the zeolite unit 203. Increased wind resistance not only increases the energy consumption of the equipment but may also affect the treatment efficiency and normal flow of styrene waste gas. Based on this situation, the conventional design concept is to keep the radial thickness of the zeolite unit 203 constant, so that the windward area is proportional to the treatment air volume. Therefore, when treating large volumes of waste gas, the windward area is mainly expanded by increasing the height and circumferential width of the zeolite unit 203, thereby achieving the treatment of large volumes of waste gas.

[0032] However, the limitations of this design become apparent when the air volume exceeds a certain value. As the air volume continues to increase, the height and circumferential width of the zeolite unit 203 become excessive in order to meet the requirements of the windward area. This directly leads to a sharp increase in the overall size of the equipment, which not only increases the manufacturing and installation costs of the equipment, but also occupies a large amount of space.

[0033] Based on this, in the styrene waste gas treatment equipment provided in this embodiment of the invention, the zeolite unit 203 is configured as a U-shaped strip structure with the opening facing outwards. The zeolite unit 203 extends vertically during installation to ensure that multiple zeolite units 203 can form a ring structure when arranged circumferentially. One end of the zeolite unit 203 is large and the other end is small, forming a figure-eight-shaped structure, which can simultaneously guide styrene waste gas from top to bottom or from bottom to top along its own U-shaped inner side to increase the flow path of styrene waste gas. Adjacent zeolite units 203 are upside down to ensure that multiple zeolite units 203 can form a ring structure when arranged circumferentially. The U-shaped bottom of the zeolite unit 203 is a solid structure to prevent styrene waste gas from flowing out through the flow channel 2031.

[0034] Specifically, from the perspective of fluid mechanics and adsorption principles, the U-shaped strip structure of the zeolite unit 203 has significant advantages. The windward area of ​​a traditional planar zeolite unit 203 is limited by its two-dimensional planar dimensions. However, the U-shaped strip structure of the zeolite unit 203, through three-dimensional folding, transforms the planar windward surface into a U-shaped three-dimensional windward surface within the same radius of gyration. This structure significantly increases the effective adsorption area per unit volume: when styrene waste gas flows through the U-shaped groove, the waste gas flow forms a top-down or bottom-up guiding path along the inner side of the U-shape. This effectively increases the residence time of the waste gas in the zeolite unit 203 without increasing the radial dimensions of the equipment by extending the contact path between the airflow and the zeolite unit 203. Thus, on the one hand, the traditional approach of relying on "expanding space" to ensure processing efficiency is transformed into relying on "optimizing the path" to achieve the same effect, thereby fundamentally resolving the contradiction between equipment size and processing efficiency. On the other hand, since it is not necessary to increase the radius of the zeolite cylinder 2 or the height of the zeolite unit 203 to meet the large air volume processing requirements, the overall size of the equipment can be effectively controlled: under the same processing air volume, the turning radius of the equipment using the U-shaped strip structure of the zeolite unit 203 can be significantly smaller than that of traditional equipment. This directly reduces the material usage and processing difficulty of components such as the outer shell 1, the desorption inlet shell 3, and the desorption outlet shell 4, thereby reducing manufacturing and installation costs. At the same time, the compact structure also reduces the equipment's footprint and space occupation, thus meeting more application scenarios.

[0035] In a further embodiment, to further improve the treatment effect on styrene waste gas, the U-shaped inner root of the zeolite unit 203 can be set as a conical surface, and the zeolite unit can be set to tilt from the outside to the inside or from the inside to the outside from its small end to its large end.

[0036] Specifically, when styrene waste gas enters the U-shaped opening of zeolite unit 203, the tilt angle of the cone surface generates an axial force on the airflow: when the cone surface tilts from the outside to the inside, the styrene waste gas experiences an inward thrust upon contact with the cone surface, causing the airflow to converge towards the central axis of zeolite unit 203 and then diffuse uniformly along the axial direction; when the cone surface tilts from the inside to the outside, the styrene waste gas experiences an outward thrust upon contact with the cone surface, causing the styrene waste gas to disperse axially in all directions. Regardless of the tilt method, the geometric guidance of the cone surface can transform the radially flowing styrene waste gas into a composite motion with an axial component. This motion allows the styrene waste gas to form a more uniform distribution field in the axial direction when passing through zeolite unit 203. Compared to the situation in traditional planar structures where styrene waste gas tends to accumulate at both ends of the radial direction, the uniform axial distribution guided by the cone surface ensures that each adsorption site of zeolite unit 203 along the axial direction can fully contact the waste gas, avoiding the existence of local adsorption overload or inefficient adsorption areas. In principle, this achieves a dual improvement in treatment efficiency and zeolite utilization rate.

[0037] Meanwhile, when impurities enter the U-shaped opening of zeolite unit 203 with styrene waste gas and come into contact with the conical surface, the inclined trajectory of the conical surface guides the impurities to move axially. This axial movement prevents impurities from accumulating in a localized area of ​​zeolite unit 203, but rather guides them gradually towards the larger or smaller end of zeolite unit 203 along the conical surface with the airflow. This dynamic guidance mechanism effectively solves the problem of impurities accumulating at the adsorption inlet 101 in traditional structures, causing localized blockage of zeolite unit 203. Because impurities no longer concentrate in a particular area, the adsorption channels of zeolite unit 203 can maintain patency for a longer period, reducing equipment maintenance frequency and ensuring long-term stability of adsorption efficiency, fundamentally optimizing the operational reliability of the equipment.

[0038] Furthermore, the introduction of the conical structure does not increase the overall size of the equipment or the wind resistance load. It achieves the motion control of airflow and impurities through the optimization of geometry. It belongs to the passive flow field regulation design. Without relying on an additional power device, it utilizes the interaction principle between fluid and conical surface to simultaneously achieve multiple objectives such as uniform distribution of styrene waste gas, impurity guidance and adsorption efficiency maintenance.

[0039] It should be noted that when the U-shaped inner root of the zeolite unit 203 is set to slope from the small end to the large end from the outside to the inside, this structure has a significant advantage in material utilization efficiency: From a geometrical perspective, the cone surface sloping from the outside to the inside forms a naturally converging structure. Compared to the cone surface sloping from the inside to the outside, its outer wall has a smaller unfolded area within the same axial height range. This geometric characteristic directly reduces the amount of zeolite material used, because when meeting the same adsorption volume requirements, the cone surface structure sloping from the outside to the inside does not need to expand the radial dimension of the outer wall as much as the structure sloping from the inside to the outside. From the perspective of material mechanics, this converging structure can also evenly distribute the pressure to the entire zeolite unit 203 under stress, reducing stress concentration areas, thereby allowing for the use of thinner material thickness without affecting structural strength. This optimized balance between material usage and structural strength allows for effective control of equipment manufacturing costs. Especially in large-scale production, the reduction in material costs will generate significant economic benefits.

[0040] It should also be noted that, to ensure structural rationality, the inner wall of the zeolite unit 203 is always vertical, regardless of the tilting method. When the styrene waste gas undergoes axial movement guided by the conical surface, the vertical inner wall provides a clear flow boundary for the airflow, avoiding turbulence or eddies that might occur due to the tilt of the inner wall. This stable flow channel structure helps maintain a uniform distribution of styrene waste gas within the zeolite unit 203, ensuring consistent adsorption efficiency in each area. Simultaneously, the vertical inner wall, together with the top ring plate 204 and the bottom circular plate 205, forms a vertical support system. This structural layout effectively resists the centrifugal force generated during the high-speed rotation of the zeolite unit 203. Compared to the lateral force that might be generated by the tilted inner wall, the vertical inner wall directly transmits the centrifugal force to the upper and lower support structures, reducing the risk of deformation of the zeolite unit 203 and thus ensuring the long-term reliability of the equipment. Furthermore, the vertical inner wall simplifies the manufacturing process, facilitating the sealing connection between the zeolite unit 203 and the top ring plate 204 and the bottom circular plate 205, further improving the overall performance of the equipment.

[0041] In other embodiments, to further improve the treatment effect of styrene waste gas, two support rods 5 can be inserted into the U-shaped opening of each zeolite unit 203. The two support rods 5 at the U-shaped opening of the same zeolite unit 203 are arranged at intervals along the radial direction of the zeolite cylinder 2, and the support rods 5 extend in a direction parallel to the axis of the zeolite cylinder 2. Each support rod 5 is provided with multiple air guide plates 501 along the axial direction. The surfaces of the multiple air guide plates 501 on the same support rod 5 overlap to ensure that the flow of styrene waste gas can be guided in the same direction. The support rod 5 can rotate around its own axis and has corresponding first and second states before and after rotation. The styrene waste gas treatment equipment is also provided with a rotating mechanism 6, which is configured to drive the support rods 5 to rotate. Thus, when the support rod 5 is located in the area outside the second chamber 401 of the exhaust chamber 202, the rotation mechanism 6 drives the support rod 5 to the first state. At this time, the surface of the guide plate 501 is approximately perpendicular to the U-shaped inner side of the zeolite unit 203, thereby guiding the styrene waste gas to the two U-shaped inner sides of the zeolite unit 203 respectively, thereby improving the adsorption efficiency of the zeolite unit 203 for styrene waste gas. When the support rod 5 is located in the second chamber 401, the rotation mechanism 6 drives the support rod 5 to the second state. At this time, the surface of the guide plate 501 extends along the radial direction of the zeolite cylinder 2, avoiding affecting the flow of hot gas. Optionally, the guide plates 501 on the two support rods 5 at the U-shaped opening of the same zeolite unit 203 can be arranged at axial intervals to reduce manufacturing costs.

[0042] Specifically, to achieve the rotation of the support rod 5, it is configured to slide along its own axis. During installation, the top end of the support rod 5 vertically penetrates the top ring plate 204, and the bottom end is vertically inserted into the bottom circular plate 205. The rotation mechanism 6 can be configured to include a stop block 601, which is installed on the inner top wall of the large end of the detached shell 4 and can form a stop with the top end of the support rod 5 to drive the support rod 5 downward. Spiral grooves 602 are provided at the holes connecting the top ring plate 204 and the support rod 5, and sliding protrusions 603 are provided on each support rod 5. The sliding protrusions 603 are slidably inserted into the bottom circular plate 205 during installation. Within the spiral groove 602, the support rod 5 and the top ring plate 204 form a spiral engagement through the sliding protrusion 603 and the spiral groove 602. This allows the support rod 5 to rotate simultaneously when it moves downward, switching from the first state to the second state. A first elastic element is connected between each support rod 5 and the zeolite cylinder 2. Under the action of the first elastic element, the support rod 5 tends to move upward. When the support rod 5 moves downward, the first elastic element stores force. When the support rod 5 and the stop block 601 disengage, the first elastic element releases force, simultaneously driving the support rod 5 to move upward, switching from the second state to the first state.

[0043] It is understandable that the first elastic element can be set as a first tension spring 604 or a rubber matrix. Taking the first elastic element as a first tension spring 604 as an example, the first tension spring 604 is sleeved on the support rod 5 during installation, with its top end set at the bottom of the top ring plate 204 and its bottom end set on the support rod 5. Under the action of the first tension spring 604, the support rod 5 has an upward tendency. Then, when the support rod 5 moves downward, the first tension spring 604 stretches and stores force. When the support rod 5 and the stop block 601 disengage, the first tension spring 604 is released, simultaneously driving the support rod 5 to move upward, so as to switch from the second state to the first state.

[0044] Therefore, by setting the rotating mechanism 6, the state of the support rod 5 can be automatically switched. When the support rod 5 is located in the area outside the second chamber 401 of the exhaust chamber 202, the support rod 5 is in the first state. At this time, the air guide plates 501 on the two support rods 5 at the U-shaped opening of the same zeolite unit 203 have a preset angle between them and are configured to guide the exhaust gas to the two U-shaped inner surfaces of the zeolite unit 203 respectively, thereby improving the adsorption efficiency of the zeolite unit 203 for exhaust gas. When the support rod 5 is located in the second chamber 401, the support rod 5 is in the second state. At this time, the surface of the air guide plate 501 extends along the radial direction of the zeolite cylinder 2, thereby avoiding affecting the flow of hot gas.

[0045] In other embodiments, when the zeolite tube 2 is desorbed, material blockage or adhesion may occur at the outer opening of the through hole: when hot gas flows through the zeolite unit 203, the organic pollutants adsorbed on the surface of the zeolite unit 203 will be desorbed, forming gaseous molecules or liquid particles. If these desorbed substances encounter temperature gradient changes or flow rate fluctuations during the flow of hot gas, they may condense, polymerize or deposit at the outer opening of the through hole. For example, after high-boiling-point organic matter is detached from the surface of the zeolite unit 203, if it encounters cooling at the outer opening of the through hole, it will quickly change from gaseous to liquid and adhere to the hole wall; while some macromolecular polymers may become entangled with each other due to intermolecular forces during the desorption process, forming flocculent material that accumulates at the hole opening, thus affecting the passage of hot gas and the desorption effect, as well as the passage of styrene waste gas and the adsorption effect.

[0046] Based on this, in the styrene waste gas treatment equipment provided in this embodiment of the invention, a support 7 is provided in the second chamber 401; an active telescopic rod 8 is provided on the support 7, and the active telescopic rod 8 extends in the radial direction of the zeolite cylinder 2; brushes 9 are provided on the left and right side walls of the inner end of the active telescopic rod 8, and the brushes 9 can rotate around their own axis to clean the two U-shaped inner surfaces of the same zeolite unit 203. Preferably, the brushes 9 move from the small end to the large end of the zeolite unit 203 to avoid pushing impurities from the large end to the small end, which could worsen the blockage; the active telescopic rod 8 is telescopic, thereby enabling selective... The timing of cleaning the zeolite unit 203 is designed to minimize the impact on the desorption of the zeolite cylinder 2. The styrene waste gas treatment equipment is further configured to include a first transmission mechanism 10 and a second transmission mechanism 11. The first transmission mechanism 10 is configured to drive the support 7 to rotate around the axis of the zeolite cylinder 2, thereby driving the brush 9 to rotate synchronously with the zeolite cylinder 2, which neither affects the desorption of the zeolite cylinder 2 nor the cleaning of the brush 9. The second transmission mechanism 11 is configured to drive the support 7 to slide in a direction parallel to the axis of the zeolite cylinder 2, thereby driving the brush 9 to move axially along the zeolite unit 203, improving the comprehensiveness of the cleaning.

[0047] It is understandable that the driving force for the extension and retraction of the active telescopic rod 8 can be provided by hydraulic pressure, thus forming a hydraulic cylinder-like structure; the driving force for the extension and retraction of the active telescopic rod 8 can also be provided by pneumatic pressure, thus forming a pneumatic cylinder-like structure; the driving force for the extension and retraction of the active telescopic rod 8 can also be provided by mechanical and electric power, thus forming an electric cylinder-like structure.

[0048] Specifically, the first transmission mechanism 10 includes a fixed base 1001, which is located inside the second chamber 401 and is fixedly connected to the inner bottom wall of the large end of the detachment shell 4 by bolts. A sliding groove 1002 is provided on the fixed base 1001. The sliding groove 1002 has an arc-shaped structure and is coaxially arranged with the zeolite cylinder 2. A slider 1004 is slidably inserted into the sliding groove 1002. The slider 1004 is connected to the right end of the sliding groove 1002 through a second elastic element. Under the action of the second elastic element, the slider 1004 has a tendency to move towards the sliding groove 1002. The right end of the slide 1004 tends to move; multiple slots 1003 are provided on the circumferential sidewall of the bottom circular plate 205, and the multiple slots 1003 are evenly arranged in the circumferential direction and are corresponding to the zeolite unit 203; a locking rod 1005 is vertically inserted into the rear sidewall of the slide 1004, the locking rod 1005 extends in the radial direction of the zeolite cylinder 2, and the locking rod 1005 is connected to the slide 1004 through a third elastic element. Under the action of the third elastic element, the locking rod 1005 has a tendency to extend, so that it can engage with the slot 1003; the support 7 is provided on the slide 1004. Thus, during the rotation of the zeolite cylinder 2, when the slot 1003 rotates to correspond with the locking rod 1005, under the action of the third elastic element, the locking rod 1005 extends and engages with the slot 1003, thereby driving the slider 1004 to slide to the left along the slide groove 1002. The second elastic element stores force to prepare for the reset of the slider 1004, and at the same time drives the support 7 to rotate, so that the brush 9 rotates synchronously with the zeolite cylinder 2, which does not affect the desorption of the zeolite cylinder 2, nor does it affect the cleaning of the brush 9; when the slider 1 When 004 moves to the left end of the slide 1002, as the zeolite cylinder 2 continues to rotate, the slot 1003 and the lever 1005 gradually shift circumferentially. Under the pushing force of the circumferential sidewall of the bottom circular plate 205, the lever 1005 gradually retracts into the slider 1004. The third elastic element stores force to prepare for the next extension of the lever 1005. When the lever 1005 and the slot 1003 disengage, under the action of the second elastic element, the slider 1004 moves to the right along the slide 1002 to achieve reset.

[0049] It is understandable that the second elastic element can be set as a second tension spring 1006 or a rubber substrate. Taking the second elastic element as a second tension spring 1006 as an example, the second tension spring 1006 is inserted into the slide groove 1002 during installation, with its right end fixed to the right end of the slide groove 1002 and its left end fixed to the slider 1004.

[0050] It is understandable that the slot 1003 can be set as a V-shaped structure with the tip facing inward, and the inner end of the lever 1005 can be set as a triangular structure, so that the slot 1003 and the lever 1005 can be quickly inserted and disengaged through the beveled engagement.

[0051] Understandably, the third elastic element can be set as a compression spring 10051 or a rubber matrix.

[0052] More specifically, the second transmission mechanism 11 is configured to include two screws 1101, both of which are located on top of the slider 1004. The screws 1101 are parallel to the axis of the zeolite cylinder 2 and can rotate around their own axis. A support 7 is threadedly fitted onto both screws 1101. By restricting the rotation of the support 7, when the screws 1101 rotate, the threaded engagement allows the support 7 to slide in a direction parallel to the axis of the zeolite cylinder 2, thereby driving the brush 9 to move axially and improving the comprehensiveness of cleaning. To facilitate the rotation of the screws 1101, a first gear 1102 is fixedly fitted onto each screw 1101. A second gear 1103 is provided on the slider 1004. The second gear 1103 can rotate around its own axis and meshes with both first gears 1102 simultaneously. Thus, through the meshing between the first gears 1102 and the second gear 1103, the two screws 1101 are driven to rotate synchronously. To facilitate the rotation of the first gear 1102, a third drive motor 1104 is inserted into the slider 1004, with its motor shaft facing upward and fixedly inserted into the first gear 1102.

[0053] It should be noted that, in order to improve the installation stability and movement stability of the two screws 1101, two of the first transmission mechanism 10 and the second transmission mechanism 11 can be provided, and respectively provided on the bottom inner wall of the large end of the detached shell 4 and the top inner wall, so as to fix the two ends of the screw 1101 along the axial direction.

[0054] In a further embodiment, when the U-shaped inner root of the zeolite unit 203 is set as a conical surface, the U-shaped inner surface of the zeolite unit 203 forms a trapezoidal shape, which means that the innermost impurities that are closer to the long base need to move a longer distance to escape from the zeolite unit 203, thus affecting the cleaning effect.

[0055] Based on this, in the styrene waste gas treatment equipment provided in this embodiment of the invention, elastic telescopic rods 12 are vertically arranged on both the left and right sides of the inner end of the active telescopic rod 8; the brush 9 is sleeved on the elastic telescopic rod 12 during installation. When the support 7 moves axially, the telescopic characteristics of the elastic telescopic rod 12 are utilized to allow the brush 9 to fit tightly against the U-shaped inner side of the zeolite unit 203, thereby improving the cleaning effect. The elastic characteristics of the elastic telescopic rod 12 are also utilized to allow the brush 9 to vibrate and move simultaneously, improving the cleaning capacity. The brush 9 is frustum-shaped with the small end facing outwards, and its conical structure can better fit the side of the zeolite unit 203, thereby improving the cleaning effect. Each brush 9 has a screw... The first dividing brush 901 is spiral-shaped and the second dividing brush 902 is spiral-shaped. The first dividing brush 901 is positioned further out than the second dividing brush 902, and the spiral directions of the first dividing brush 901 and the second dividing brush 902 are opposite. The first dividing brush 901 is configured to guide impurities from the inside out. When cleaning the zeolite unit 203, the spiral structure of the first dividing brush 901 can quickly guide the impurities in the upper middle part and the outer part of the middle part of the zeolite unit 203 to move outward. The spiral structure of the second dividing brush 902 can quickly guide the impurities in the upper middle part and the outer part of the middle part of the zeolite unit 203 to move inward. With the blowing of hot air, the cleaned impurities can be blown away, thereby shortening the movement path of impurities and improving the cleaning efficiency of impurities.

[0056] To facilitate the rotation of the brush 9, the elastic telescopic rod 12 is configured to rotate around its own axis. A fourth drive motor 14 is installed at the top of the inner end of the active telescopic rod 8. When the fourth drive motor 14 is installed, the motor shaft is set vertically downward, and a first bevel gear is fixedly sleeved on it. The first bevel gear is located inside the active telescopic rod 8. Rotating shafts 15 are vertically and penetratingly installed on the left and right side walls of the inner end of the active telescopic rod 8. The rotating shafts 15 can rotate around their own axes. A second bevel gear is fixedly sleeved at the inner end of each rotating shaft 15. The second bevel gear meshes with the first bevel gear. A first pulley 16 is fixedly sleeved at the outer end of each rotating shaft 15. A second pulley 17 is fixedly sleeved on the fixed part of each elastic telescopic rod 12. A belt 18 is connected between the second pulley 17 and the first pulley 16 for transmission. Thus, when cleaning the zeolite unit 203, the fourth drive motor 14 is started. The fourth drive motor 14 drives the rotating shaft 15 to rotate through the meshing between the first bevel gear and the second bevel gear. The rotating shaft 15 drives the elastic telescopic rod 12 to rotate through the transmission cooperation between the first pulley 16, the belt 18 and the second pulley 17. The elastic telescopic rod 12 drives the brush 9 to rotate in order to clean the zeolite unit 203.

[0057] It is understandable that the brush 9 can also be rotated by replacing the first pulley 16 with the first sprocket, the second pulley 17 with the second sprocket, and the belt 18 with the chain.

[0058] It should be noted that, in order to improve the stability of the active telescopic rod 8 during cleaning, the inner end of the active telescopic rod 8 is partially sleeved on the support rod 5 located on the outer side during use.

[0059] In other embodiments, to improve the cleaning effect of the brush 9 on the zeolite unit 203, the support 7 is configured to slide back and forth in a direction parallel to the axis of the zeolite cylinder 2. This allows the same zeolite unit 203 to be cleaned multiple times by the brush 9, thus improving the cleaning effect.

[0060] Specifically, the screw 1101 can be driven to rotate in both directions by the forward and reverse rotation of the third drive motor 1104, which in turn drives the support 7 to slide back and forth in a direction parallel to the axis of the zeolite cylinder 2.

[0061] In other embodiments, the first transmission mechanism 10 may also be configured to replace the second elastic element, the third elastic element, the slot 1003 and the lever 1005 with a first drive cylinder. The first drive cylinder is installed on the fixed base 1001, and its output shaft is horizontally set and hinged to the side wall of the slider 1004 to ensure that the slider 1004 can be driven to slide along the slide groove 1002.

[0062] In other embodiments, the second transmission mechanism 11 may also be configured to include a second drive cylinder, wherein the output shaft of the second drive cylinder is positioned upward during installation and fixed to the bottom of the support 7, ensuring that the support 7 can be driven to slide in a direction parallel to the axis of the zeolite cylinder 2.

[0063] It can be understood that the drive cylinder can be set as any one of hydraulic cylinder, pneumatic cylinder or electric cylinder.

[0064] In other embodiments, to facilitate the provision of driving force for the rotation of the zeolite cylinder 2, the styrene waste gas treatment equipment is configured to also include a drive element.

[0065] Specifically, in this embodiment, the driving component is configured to include a first driving motor 13. The first driving motor 13 is installed on the bottom inner end face of the housing 1 with the motor shaft facing upward and is fixedly coaxially inserted into the bottom of the bottom circular plate 205.

[0066] More specifically, a support ring 103 is fixedly provided on the bottom inner end face of the outer shell 1. The support ring 103 and the bottom circular plate 205 are coaxially arranged and sleeved on the outer periphery of the first drive motor 13. During installation, the support ring 103 rotates and seals the bottom of the bottom circular plate 205, thereby supporting the zeolite cylinder 2 and isolating the first drive motor 13 from the air inlet chamber 201, thereby reducing the impact of styrene exhaust gas on the performance of the first drive motor 13.

[0067] In other embodiments, the rotating mechanism 6 may also be configured to include multiple second drive motors. The second drive motors are inserted into the top ring plate 204 or the bottom circular plate 205 during installation. Their motor shafts are vertically arranged and fixedly connected to the end of the support rod 5, thereby enabling the support rod 5 to rotate and facilitating the switching of the state of the support rod 5.

[0068] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

Claims

1. A styrene off-gas treatment apparatus characterized by comprising: The styrene waste gas treatment equipment comprises: a shell having an adsorption inlet and an adsorption outlet; a zeolite cylinder sealingly inserted into the shell and capable of rotating around its axis and separating the shell into an air inlet chamber and an air outlet chamber, the air inlet chamber being located at the outer side and communicating with the adsorption inlet, and the air outlet chamber being located at the inner side and communicating with the adsorption outlet; the zeolite cylinder has a plurality of zeolite units arranged in the circumferential direction, each of the zeolite units has a plurality of through holes communicating the air inlet chamber and the air outlet chamber; the zeolite unit is in the shape of a U-shaped strip with the opening facing outward, one end of the zeolite unit being large and the other end being small; adjacent zeolite units are upside down and a flow channel is formed therebetween, the flow channel communicating with the through holes and the air outlet chamber; a desorption inlet shell sealingly inserted into the air outlet chamber and forming a first chamber with the inner peripheral wall of the zeolite cylinder; the desorption inlet shell has a desorption inlet communicating with the first chamber and capable of receiving external hot air; a desorption outlet shell sealingly inserted into the air inlet chamber and forming a second chamber with the outer peripheral wall of the zeolite cylinder, the second chamber communicating with the first chamber through the through holes; the desorption outlet shell has a desorption outlet communicating with the second chamber.

2. The styrene off-gas treatment apparatus according to claim 1, wherein The inner root of the U-shaped zeolite unit is a tapered surface and is inclined from the small end to the large end or from the outside to the inside.

3. The styrene off-gas treatment apparatus according to claim 1, wherein Each of the U-shaped openings of the zeolite units is provided with two support rods, the two support rods of the U-shaped opening of the same zeolite unit being arranged in the radial direction of the zeolite cylinder and extending in the direction parallel to the axis of the zeolite cylinder; a plurality of air deflectors are arranged on each of the support rods in the axial direction; the support rods are capable of rotating around their axes and have corresponding first and second states before and after rotation, when in the first state, the air deflectors of the two support rods of the U-shaped opening of the same zeolite unit have a preset included angle and are capable of guiding the waste gas to the two inner sides of the U-shaped zeolite unit, when in the second state, the air deflectors extend in the radial direction of the zeolite cylinder; the styrene waste gas treatment equipment further comprises a rotating mechanism capable of driving the support rods to rotate.

4. The styrene off-gas treatment apparatus according to claim 3, wherein The support rods are capable of sliding in the direction of their axes; the rotating mechanism comprises a stopper provided on the desorption outlet shell and capable of forming a stop cooperation with the support rods; the zeolite cylinder is provided with a plurality of spiral grooves; each of the support rods is provided with a sliding convexity slidingly inserted into the spiral groove; a first elastic member is connected between each of the support rods and the zeolite cylinder, and the support rods have a tendency to return after moving in the direction of their axes under the action of the first elastic member.

5. The styrene off-gas treatment apparatus according to claim 1, wherein The styrene waste gas treatment equipment further comprises a support located in the second chamber and capable of sliding in a direction parallel to the axis of the zeolite cylinder and rotating around the axis of the zeolite cylinder; the support is provided with an active telescopic rod extending in a radial direction of the zeolite cylinder and capable of telescoping; the active telescopic rod is provided with two brushes configured to clean two U-shaped inner sides of the same zeolite unit, the brushes being capable of rotating around their own axes; the styrene waste gas treatment equipment further comprises a first transmission mechanism configured to drive the support to rotate and a second transmission mechanism configured to drive the support to slide.

6. The styrene off-gas treatment apparatus according to claim 5, wherein The active telescopic rod is provided with two elastic telescopic rods arranged perpendicularly to the active telescopic rod; the brushes are sleeved on the elastic telescopic rods; the brushes are circular truncated cone-shaped with small ends outside; each brush has a first spiral-shaped sub-brush and a second spiral-shaped sub-brush, the first sub-brush being arranged more outward than the second sub-brush, and the spiral directions of the first sub-brush and the second sub-brush being opposite, the first sub-brush being configured to guide impurities from inside to outside.

7. The styrene off-gas treatment apparatus according to claim 5, wherein The first transmission mechanism comprises a fixed seat located in the second chamber; the fixed seat is provided with a sliding groove which is circular arc-shaped and coaxial with the zeolite cylinder; the zeolite cylinder is provided with a plurality of clamping grooves arranged circumferentially, the clamping grooves corresponding to the zeolite units; the sliding groove is elastically and slidably inserted with a sliding block; the sliding block is provided with a clamping rod extending in a radial direction of the zeolite cylinder, capable of elastically sliding in the radial direction of the zeolite cylinder and capable of being clamped with the clamping groove; the support is arranged on the sliding block.

8. The styrene off-gas treatment apparatus according to claim 7, wherein The second transmission mechanism comprises two screws, both of which are arranged on the sliding block, parallel to the axis of the zeolite cylinder and capable of rotating around their own axes; each screw is fixedly sleeved with a first gear; the sliding block is provided with a second gear capable of rotating around its own axis and simultaneously meshing with the two first gears; the support is simultaneously threadedly sleeved on the two screws.

9. The styrene off-gas treatment apparatus according to claim 5, wherein The support is capable of reciprocating sliding in a direction parallel to the axis of the zeolite cylinder.

10. The styrene off gas treatment apparatus according to claim 1, wherein The styrene waste gas treatment equipment further comprises a driving member configured to provide driving force for the rotation of the zeolite cylinder.

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