Spinning waste gas treatment device and treatment method based on polyester filament yarn spinning production

Abstract

The invention discloses a spinning waste gas treatment device and method based on polyester filament yarn spinning production, and relates to the technical field of spinning waste gas treatment. The spinning waste gas treatment device based on polyester filament yarn spinning production comprises a shell and a fixing frame, a reheating assembly used for changing the thermodynamic equilibrium state and a switching assembly used for destroying a heat / mass transfer boundary layer on the surface of zeolite are arranged in the shell, and the reheating assembly comprises a reheating box fixed in the shell and used for heating the zeolite; carrying out secondary heating on the desorption gas; one end of the flow dividing pipe is communicated with the reheating box through a pressure valve, and the flow dividing pipe is used for conveying the desorption gas subjected to secondary heating; and the flow dividing box is communicated with the other end of the flow dividing pipe and is used for conveying the desorption gas subjected to secondary heating to the zeolite, changing the thermodynamic equilibrium state of the zeolite, increasing the heat / mass transfer driving force between the gas and the solid, breaking the heat / mass equilibrium state, exciting the kinetic energy of VOCs molecules and preventing the desorption efficiency from being reduced.

Description

Technical Field

[0001] This invention relates to the field of spinning waste gas treatment technology, specifically to a spinning waste gas treatment device and treatment method based on polyester filament spinning production. Background Technology

[0002] Volatile organic compounds (VOCs) are the main air pollutants generated in the chemical fiber industry, especially during the spinning of polyester filament. In the melt spinning and heat setting processes, polyethylene terephthalate (PET) degrades upon heating to generate low-molecular-weight VOCs, primarily acetaldehyde. Simultaneously, spinning oils volatilize upon heating, forming a mixed waste gas containing light esters, fatty acids, and other organic components. This type of waste gas is characterized by large air volumes (typically 10,000–200,000 m³ / h), making it difficult to treat economically and efficiently using direct combustion. To address these issues, the zeolite rotor concentration-catalytic combustion combined process has become the mainstream technology in the industry. However, in practical engineering applications, existing desorption zones generally employ a constant temperature and uniform airflow design. The airflow and zeolite bed quickly reach thermodynamic equilibrium, leading to a decrease in the desorption driving force over time. For example, in CN121103081A, a zeolite rotor exhaust gas treatment device is disclosed. However, the desorption zone is designed with constant temperature and uniform airflow, and the airflow and zeolite bed quickly reach thermodynamic equilibrium, resulting in the desorption driving force decaying over time. Therefore, a spinning waste gas treatment device and treatment method based on polyester filament spinning production is proposed. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a spinning waste gas treatment device and method based on polyester filament spinning production, which solves the problems mentioned in the background technology.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a spinning waste gas treatment device based on polyester filament spinning production, comprising a shell and a fixing frame, wherein the shell is equipped with a reheating component for changing the thermodynamic equilibrium state and a switching component for disrupting the heat / mass transfer boundary layer on the zeolite surface, the reheating component comprising: The reheating chamber, fixed inside the outer shell, reheats the desorbed gas. The diverter pipe is connected to the reheating box at one end via a pressure valve to transport the desorbed gas after secondary heating. The distributor box, connected to the other end of the distributor pipe, delivers the desorbed gas after secondary heating to the zeolite, thereby changing the thermodynamic equilibrium state at the zeolite.

[0005] Preferably, the reheating assembly further includes: a conical seat, one end of which is fixed inside the diversion box to increase the flow direction of the desorbed gas inside the diversion box; a support rod, one end of which is slidably inserted inside the conical seat; and a spring, one end of which is fixed inside the conical seat and the other end of which is fixed to the other end of the support rod to provide elastic force for the support rod to reset.

[0006] Preferably, the reheating assembly further includes: a support shaft, one end of which is movably mounted on a support rod via a bearing; and rotating blades, fixed on the support shaft and located at the outlet of the splitter pipe.

[0007] Preferably, the switching assembly includes: a movable shaft, one end of which is hinged to the diverter box via a torsion spring; a fixed plate, the side wall of which is fixed to the other end of the movable shaft; an electromagnet, one end of which is fixed to the fixed plate; and a magnetic ring, the side of which slides against the electromagnet and is magnetically attracted to the energized electromagnet.

[0008] Preferably, the switching assembly further includes: a mounting shaft, one end of which is hinged to a fixed plate via a worm spring; and a guide plate, one end of which is fixed to the other end of the mounting shaft and can rotate around the mounting shaft or the movable shaft under external force.

[0009] Preferably, the switching assembly further includes: a squeezing rod, one end of which is rounded and abuts against the guide plate, pushing the guide plate to flip under external force; a driven rod, one end of which is fixed to the other end of the squeezing rod, and the other end is provided with an inclined surface to provide power for the movement of the squeezing rod; a sliding rod, one end of which is fixed to the driven rod, and the other end of which slides through the diverter box to guide and limit the driven rod; a second spring, one end of which is fixed to the sliding rod, and the other end of which is fixed in the diverter box to provide elastic force for the sliding rod to reset; and a protrusion, one end of which is fixed to the support shaft, and the other end abuts against the inclined surface of the driven rod.

[0010] Preferably, the outer casing is further provided with an adsorption assembly for adsorbing volatile organic compounds in the exhaust gas. The adsorption assembly includes: a rotor chamber, movably mounted on a fixed frame; a partition plate, fixed inside the rotor chamber, dividing the rotor chamber into an adsorption zone, a desorption zone, and a cooling zone; and a drive motor, fixed on the outer casing, which is connected to the rotor chamber via a transmission component to provide power for the rotation of the rotor chamber.

[0011] Preferably, the adsorption assembly further includes: a waste gas inlet pipe, one end of which is connected to the front of the rotor chamber to input the spinning waste gas to be treated into the rotor chamber; a clean gas outlet pipe, one end of which is connected to the back of the rotor chamber to discharge the adsorbed spinning waste gas; a desorption gas inlet pipe, the end of which is connected to the rotor chamber to transport the high-temperature gas required for desorption into the rotor chamber; a conveying pipe, the initial end of which is connected to the front of the rotor chamber to transport the desorption gas containing volatile organic compounds to the next process; a cooling gas inlet pipe, one end of which is connected to the rotor chamber to input low-temperature gas into the cooling zone to cool the zeolite; and a cooling gas outlet pipe, one end of which is connected to the rotor chamber to transport the low-temperature gas to the next process.

[0012] The present invention also provides a treatment method for a spinning waste gas treatment device applicable to polyester filament spinning production, comprising the following steps: S1. The spinning waste gas generated during the polyester filament spinning process is transported into the outer shell for adsorption treatment of volatile organic compounds in the waste gas. S2. High-temperature desorption gas is introduced into the zeolite after adsorbing volatile organic compounds to remove the volatile organic compounds and transport them to an oxidation furnace for incineration. S3. The high-temperature gas in step S2 is reheated using a reheating assembly and then introduced into the zeolite to change the thermodynamic equilibrium state. S4. By using the switching component to change the direction of the high-temperature gas flow, the heat / mass transfer boundary layer on the zeolite surface is destroyed. S5. The incinerated gas is discharged after passing the test.

[0013] Preferably, the temperature of the high-temperature desorbed gas is between 180℃ and 220℃, and the temperature after reheating is between 280℃ and 310℃.

[0014] This invention provides a device and method for treating waste gas from polyester filament spinning production. Compared with existing technologies, it has the following advantages: (1) The waste gas treatment device and treatment method based on polyester filament spinning production concentrates the waste gas and then incinerates it in an oxidation furnace, which greatly reduces the scale of the treatment equipment and energy consumption. The total energy consumption can be reduced by 60-70%. At the same time, it can adapt to the continuous production of polyester spinning, which does not allow frequent shutdowns. It is more stable and reliable without interruption of operation, and avoids problems such as spontaneous combustion, pulverization and difficult disposal of activated carbon at high temperature. Compared with the activated carbon adsorption scheme, it is safer, has no secondary pollution, and the removal rate is stable and controllable.

[0015] (2) The spinning waste gas treatment device and treatment method based on polyester filament spinning production has a more significant desorption effect on high boiling point components in spinning waste gas, avoids the decrease in adsorption capacity due to residual accumulation, ensures the stability of desorbed waste gas concentration, increases the heat / mass transfer driving force between gas and solid, breaks the heat / mass balance state, stimulates the kinetic energy of VOCs molecules, avoids the decrease in desorption efficiency, and divides the B gas flow into multiple small streams, which are injected into the desorption zone from different positions to break the laminar boundary layer and avoid uneven local desorption. Micro-regeneration is completed during daily operation, which greatly extends the maintenance cycle to more than 1000 hours.

[0016] (3) The spinning waste gas treatment device and treatment method based on polyester filament spinning production: After the zeolite rotor has been running for a long time, the adsorption load in different areas is uneven. By driving the guide plate to rotate around the installation shaft, the high temperature B airflow is directed to the heavily polluted area, achieving targeted regeneration while enhancing the effect of breaking the heat / mass balance. By driving the guide plate to rotate around the movable shaft, the airflow is prevented from concentrating in the middle, the desorption of the upper and lower edges is strengthened, the efficiency reduction caused by the "edge effect" is prevented, the turbulent mixing is enhanced, the boundary layer is broken, and the heat / mass transfer boundary layer on the zeolite surface is further destroyed.

[0017] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in the written description and the accompanying drawings. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is another perspective view of the overall structure of the present invention; Figure 3 This is a diagram showing the internal structure of the outer casing of the present invention; Figure 4 This is another perspective view of the interior of the outer casing of the present invention; Figure 5 This is a diagram showing the location of the relevant structures of the flow divider box in this invention; Figure 6 This is a diagram showing the location of the relevant structures of the separator plate in this invention; Figure 7 This is a diagram showing the location of the relevant structures of the shunt tube in this invention; Figure 8 This is a diagram showing the location of the relevant structures of the pressure valve in this invention; Figure 9 This is a diagram showing the internal structure of the flow divider box of the present invention; Figure 10 The diagram shows the relevant structure of the protrusion in this invention. Figure 11 This is an exploded view of the conical seat of the present invention; Figure 12 The following are structural diagrams of the extrusion rod of the present invention; Figure 13 The diagram shows the relevant structure of the magnetic ring of this invention.

[0019] In the diagram: 1. Outer shell; 2. Fixing frame; 3. Partition plate; 4. Rotary wheel chamber; 5. Drive motor; 6. Transmission component; 7. Exhaust gas inlet pipe; 8. Clean gas outlet pipe; 9. Desorption gas inlet pipe; 10. Conveying pipe; 11. Cooling gas outlet pipe; 12. Cooling gas inlet pipe; 13. Reheating box; 14. Pressure valve; 15. Diverter pipe; 16. Diverter box; 17. Conical seat; 18. Support shaft; 19. Support rod; 20. Spring 1; 21. Rotating blade; 22. Protrusion; 23. Driven rod; 24. Sliding rod; 25. Spring 2; 26. Extrusion rod; 27. Guide plate; 28. Mounting shaft; 29. ​​Magnetic ring; 30. Electromagnet; 31. Fixing plate; 32. Movable shaft. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] The devices or elements referred to in the embodiments of this application or implied herein must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the embodiments of this application. In the description of the embodiments of this application, "a plurality of" means two or more, unless otherwise precisely specified.

[0022] Please see Figures 1 to 6 The present invention provides the following technical solutions: Example 1: A waste gas treatment device for polyester filament spinning production, comprising a housing 1 and a fixing frame 2, the fixing frame 2 being fixedly installed inside the housing 1, and an adsorption component for adsorbing volatile organic compounds in the waste gas being provided inside the housing 1, the adsorption component comprising: The rotating chamber 4 is movably mounted on the fixed frame 2. A partition plate 3 is fixedly installed inside the rotating chamber 4, dividing it into an adsorption zone, a desorption zone, and a cooling zone. A drive motor 5 is fixedly mounted on the outer casing 1 and is connected to the rotating chamber 4 via a transmission component 6, thus providing power for the rotation of the rotating chamber 4. One end of the waste gas inlet pipe 7 is connected to the front of the rotating chamber 4, inputting the spinning waste gas to be treated into the rotating chamber 4. One end of the clean gas outlet pipe 8 is connected to the back of the rotating chamber 4, treating the clean gas after adsorption. The waste gas from the subsequent spinning process is discharged. The end of the desorption gas inlet pipe 9 is connected to the rotor chamber 4, which supplies the high-temperature gas required for desorption into the rotor chamber 4. The initial end of the conveying pipe 10 is connected to the front of the rotor chamber 4, which supplies the desorption gas containing volatile organic compounds to the next process. One end of the cooling gas inlet pipe 12 is connected to the rotor chamber 4, which supplies low-temperature gas into the cooling zone to cool the zeolite. One end of the cooling gas outlet pipe 11 is connected to the rotor chamber 4, which supplies the low-temperature gas to the next process.

[0023] During use, the volatile organic compounds generated during the polyester filament spinning process are transported to the turbine chamber 4 through the waste gas inlet pipe 7. The hydrophobic zeolite impregnated in the honeycomb ceramic substrate in the turbine chamber 4 adsorbs the volatile organic compounds in the waste gas. The turbine chamber 4 is divided into three parts by the partition plate 3, and the three areas are divided into an adsorption zone, a desorption zone and a cooling zone. Waste gas containing volatile organic compounds is discharged through clean gas outlet pipe 8 after being adsorbed by zeolite. Part of the purified gas is injected into the cooling zone through cooling gas inlet pipe 12 to cool the zeolite, and then discharged through cooling gas outlet pipe 11, or transported to the oxidizer for incineration before being discharged. The high-temperature gas after incineration in the oxidizer is first passed through desorption gas inlet pipe 9 and then through an electric heater or heat exchanger to maintain the temperature between 180℃ and 220℃. Then it flows into the turbine chamber 4 to heat the zeolite in the desorption zone, so that the volatile organic compounds adsorbed by the zeolite are vaporized and transported to the oxidizer for incineration through conveying pipe 10. After incineration, it is discharged. During the adsorption of waste gas containing volatile organic compounds, the drive motor 5 drives the rotor chamber 4 to rotate through the transmission component 6. The rotation speed is between 3r / h and 5r / h. The rotor chamber 4 and the fixed frame 2 are gently pressed against the end face of the rotating rotor by a flexible high-temperature resistant sealing strip. The pressing force is provided by a spring or cylinder, thereby ensuring the sealing between the two and reducing the probability of air leakage.

[0024] Please see Figures 1 to 10 The present invention provides the following technical solutions: Example 2, the technical solution of which differs from Example 1 includes: a reheating component for changing the thermodynamic equilibrium state is provided inside the outer shell 1, the reheating component including: The reheating box 13 is fixedly installed inside the outer shell 1 to reheat the desorbed gas and is connected to the desorbed gas inlet pipe 9 through the gas delivery pipe. One end of the split pipe 15 is connected to the reheating box 13 through the pressure valve 14 to transport the desorbed gas after secondary heating. The split box 16 is fixedly connected to the other end of the split pipe 15 to transport the desorbed gas after secondary heating to the zeolite and change the thermodynamic equilibrium state at the zeolite. One end of the conical seat 17 is fixedly installed inside the diverter box 16 to increase the flow direction of the desorbed gas inside the diverter box 16. One end of the support rod 19 is slidably inserted inside the conical seat 17. One end of the spring 20 is fixedly installed inside the conical seat 17, and the other end of the spring 20 is fixedly installed on the other end of the support rod 19 to provide elastic force for the support rod 19 to reset. One end of the support shaft 18 is movably installed on the support rod 19 through a bearing. The rotating blade 21 is fixed on the support shaft 18, and the rotating blade 21 is located at the outlet of the diverter pipe 15.

[0025] During operation, as the high-temperature desorbed gas is transported to the turbine chamber 4 through the desorbed gas inlet pipe 9, this gas flow is divided into two parts, A and B. Gas flow A accounts for more than 70% of the original total gas flow, while the remaining part is gas flow B. Gas flow B is transported to the reheating chamber 13 inside the outer shell 1 via a gas delivery pipe. An electric heating unit reheats this gas flow until its temperature reaches between 280℃ and 310℃. As the gas in the reheating chamber 13 heats up during the heating process, the pressure inside the reheating chamber 13 continuously increases until it exceeds a preset value. At this point, the pressure valve 14 activates, indicating that the temperature of the gas flow B entering the reheating chamber 13 has reached the set temperature. Between 280℃ and 310℃, the heated B gas flow is delivered to the split box 16 through the pressure valve 14 and the split pipe 15, which splits the B gas flow into two streams again and finally injects it into the desorption zone of the turbine chamber 4. This part of high-temperature gas flow breaks the equilibrium state formed by the desorbed gas at about 200℃ in the desorption zone, so that the high-temperature gas in the desorption zone has two parts, one part is about 200℃ and the other part is about 300℃. This avoids the desorption zone being composed entirely of desorbed gas in the same temperature range, which would result in an insignificant temperature difference between the gases and inactive molecular motion, leading to insufficient or uneven vaporization of the volatile organic compounds adsorbed in the zeolite. Simultaneously, when airflow B enters the distribution box 16 through the distribution pipe 15, this airflow impacts the rotating blade 21 and is split into multiple streams under its obstruction. The remaining airflow impacts the conical seat 17 and diffuses around it, then enters the desorption zone along the distribution box 16. This allows this portion of airflow B to more quickly break the equilibrium state formed by airflow A when entering the desorption zone. At the same time, the support rod 19 provides support force to the support shaft 18, and the support rod 19 and the conical seat 17 slide together, allowing the support rod 19 to slide towards the side of the conical seat 17 under the greater impact force of airflow B. When the current airflow B has been delivered and the next airflow B is still being heated in the reheating box 13, the support rod 19, under the action of spring 20, drives the support shaft 18 and the rotating blade 21 to return to their original positions. Figure 9 The initial position is shown, awaiting the next injection of airflow B.

[0026] Please see Figures 1 to 10 The present invention provides the following technical solutions: Example 3, the technical solution of this example that differs from Example 2 includes: a switching component for disrupting the heat / mass transfer boundary layer on the zeolite surface is provided inside the outer shell 1, the switching component including: One end of the movable shaft 32 is hinged to the diverter box 16 by a torsion spring. The side wall of the fixed plate 31 is fixedly installed on the other end of the movable shaft 32. One end of the electromagnet 30 is fixedly installed on the fixed plate 31. The side of the magnetic ring 29 slides against the electromagnet 30, and the magnetic ring 29 and the energized electromagnet 30 are magnetically attracted to each other. One end of the mounting shaft 28 is hinged to the fixed plate 31 by a worm spring. One end of the guide plate 27 is fixedly installed on the other end of the mounting shaft 28. The guide plate 27 can rotate around the mounting shaft 28 or the movable shaft 32 under the action of external force. One end of the extrusion rod 26 is rounded and abuts against the guide plate 27. The extrusion rod 26 can push the guide plate 27 to rotate under the action of external force. One end of the driven rod 23 is fixedly installed on the other end of the extrusion rod 26. The other end of the driven rod 23 is provided with an inclined surface. The driven rod 23 is used to provide power for the movement of the extrusion rod 26. One end of the sliding rod 24 is fixedly installed on the driven rod 23. The other end of the sliding rod 24 slides through the diverter box 16, thereby guiding and limiting the driven rod 23. One end of the second spring 25 is fixedly installed on the sliding rod 24. The other end of the second spring 25 is fixedly installed in the diverter box 16, thereby providing elastic force for the sliding rod 24 to reset. One end of the protrusion 22 is fixedly installed on the support shaft 18. The other end of the protrusion 22 abuts against the inclined surface of the driven rod 23.

[0027] In use, as airflow B is injected into the turbine chamber 4 through the diverter box 16, this airflow impacts and disperses on the rotating blades 21, while also driving the rotating blades 21 to rotate. The rotating blades 21 drive the support shaft 18 to rotate, and the support shaft 18 drives the protrusions 22 to rotate. This causes the protrusions 22, which are arranged circumferentially around the support shaft 18, to intermittently squeeze the driven rod 23. Under the squeezing action of the protrusions 22, the driven rod 23 moves away from the support shaft 18, thus driving the sliding rod 24 to move. The sliding rod 24 slides in the diverter box 16, allowing it to move only in a straight line. When the protrusions 22 and the driven rod 23 separate, the sliding rod 24 returns to its original position under the action of the spring 25. Figure 10 The initial state is shown, waiting for the next move; When the driven rod 23 moves, it will synchronously drive the extrusion rod 26 to move. The extrusion rod 26 will push the guide plate 27 to move, causing the guide plate 27 to deflect around the movable shaft 32. At this time, the magnetic ring 29 and the electromagnet 30 are magnetically attracted together, so that the guide plate 27, the mounting shaft 28, the magnetic ring 29, the electromagnet 30, and the fixed plate 31 are combined into a whole. At this time, the B airflow will flow to the upper and lower ends of the separation box 16 under the guidance of the guide plate 27, so that most of the two B airflows enter the desorption zone from different positions, enhancing the effect of breaking the thermal / mass balance state. When half of the reheated B-flow has flowed out, the electromagnet 30 is de-energized, separating it from the magnetic ring 29. The movable shaft 32 then returns to its original position under the action of the torsion spring. Figure 13 The initial state is shown. At this time, when the driven rod 23 drives the extrusion rod 26 to move to the side where the guide plate 27 is located, the extrusion rod 26 will squeeze the guide plate 27 to rotate around the mounting shaft 28, so that the B gas flow flows into the desorption zone, further enhancing the heat / mass transfer driving force between the gas and the solid. After this B gas flow has completed its inflow, the mounting shaft 28 will also return to its original position under the action of the worm spring. Figure 13 The initial state is shown. When the electromagnet 30 is energized again, the electromagnet 30 is magnetically attracted to the magnetic ring 29 again.

[0028] This invention also provides a treatment method for a spinning waste gas treatment device applicable to polyester filament spinning production, comprising the following steps: S1. The spinning waste gas generated during the polyester filament spinning process is transported to the outer shell 1 for adsorption treatment of volatile organic compounds in the waste gas. S2. High-temperature desorption gas is introduced into the zeolite after adsorbing volatile organic compounds to remove the volatile organic compounds and transport them to an oxidation furnace for incineration. S3. The high-temperature gas in step S2 is reheated using a reheating assembly and then introduced into the zeolite to change the thermodynamic equilibrium state. S4. By using the switching component to change the direction of the high-temperature gas flow, the heat / mass transfer boundary layer on the zeolite surface is destroyed. S5. The incinerated gas is discharged after passing the test.

[0029] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0031] Parallelism: The parallelism defined in this application is not limited to absolute parallelism. This definition of parallelism can be understood as basic parallelism. It allows for situations where the parallelism is not absolute due to factors such as assembly tolerance, design tolerance, and structural flatness. It also allows for errors within a small angular range, such as within 10 degrees of assembly error. These can all be considered as parallel relationships.

[0032] Perpendicularity: The perpendicularity defined in this application is not limited to an absolute perpendicular intersection (with an included angle of 90 degrees). It is permissible for non-absolute perpendicular intersections caused by factors such as assembly tolerances, design tolerances, and structural flatness. It is permissible for errors within a small angular range, such as an assembly error range of 80 to 100 degrees, which can all be understood as a perpendicular relationship.

[0033] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A spinning waste gas treatment device based on polyester filament spinning production, comprising a shell (1) and a fixing frame (2), characterized in that, The outer shell (1) is provided with a reheating component for changing the thermodynamic equilibrium state and a switching component for disrupting the heat / mass transfer boundary layer on the zeolite surface. The reheating component includes: The reheating chamber (13) is fixed inside the outer shell (1) to reheat the desorbed gas; The diversion pipe (15) is connected at one end to the reheating box (13) through the pressure valve (14) to transport the desorbed gas after secondary heating; The splitter box (16) is connected to the other end of the splitter pipe (15) to deliver the desorbed gas after secondary heating to the zeolite and change the thermodynamic equilibrium state at the zeolite.

2. The spinning waste gas treatment device based on polyester filament spinning production according to claim 1, characterized in that, The reheating assembly also includes: The conical seat (17) is fixed at one end inside the diversion box (16) to increase the flow direction of the desorbed gas inside the diversion box (16); The support rod (19) has one end that slides through the conical seat (17); Spring 1 (20) has one end fixed inside the conical seat (17) and the other end fixed on the other end of the support rod (19), providing elastic force for the support rod (19) to reset.

3. The spinning waste gas treatment device based on polyester filament spinning production according to claim 2, characterized in that, The reheating assembly also includes: The support shaft (18) is movably mounted on the support rod (19) at one end via a bearing; Rotating blade (21) is fixed on support shaft (18) and located at the outlet of split pipe (15).

4. The spinning waste gas treatment device based on polyester filament spinning production according to claim 1, characterized in that, The switching component includes: The movable shaft (32) is hinged at one end to the distributor box (16) by a torsion spring; The sidewall of the fixed plate (31) is fixed to the other end of the movable shaft (32); An electromagnet (30) is fixed at one end to a fixed plate (31); The magnetic ring (29) slides against the electromagnet (30) on its side and is magnetically attracted to the electromagnet (30) after it is energized.

5. The spinning waste gas treatment device based on polyester filament spinning production according to claim 4, characterized in that, The switching component also includes: The mounting shaft (28) is hinged at one end to the fixed plate (31) by a worm spring; The guide plate (27) is fixed at one end to the other end of the mounting shaft (28) and can rotate around the mounting shaft (28) or the movable shaft (32) under the action of external force.

6. The spinning waste gas treatment device based on polyester filament spinning production according to claim 5, characterized in that, The switching component also includes: The extrusion rod (26) has a rounded end and abuts against the guide plate (27). Under the action of external force, it pushes the guide plate (27) to flip. The driven rod (23) is fixed at one end to the other end of the extrusion rod (26), and the other end is provided with an inclined surface to provide power for the movement of the extrusion rod (26); The sliding rod (24) is fixed at one end to the driven rod (23) and the other end slides through the diversion box (16) to guide and limit the driven rod (23); Spring 2 (25) has one end fixed to the sliding rod (24) and the other end fixed inside the diverter box (16), providing elastic force for the sliding rod (24) to reset; The protrusion (22) is fixed at one end to the support shaft (18) and at the other end to the inclined surface of the driven rod (23).

7. The spinning waste gas treatment device based on polyester filament spinning production according to claim 1, characterized in that, The outer casing (1) is further provided with an adsorption component for adsorbing volatile organic compounds in the waste gas, the adsorption component comprising: The turbine compartment (4) is movably mounted on the fixed frame (2); The partition plate (3) is fixed inside the rotor chamber (4) to divide the rotor chamber (4) into an adsorption zone, a desorption zone and a cooling zone; The drive motor (5) is fixed on the outer shell (1) and is connected to the rotor chamber (4) through the transmission component (6) to provide power for the rotation of the rotor chamber (4).

8. The waste gas treatment device for polyester filament spinning production according to claim 7, characterized in that: The adsorption assembly further includes: The exhaust gas inlet pipe (7) is connected at one end to the front of the rotor chamber (4) to input the spinning exhaust gas to be treated into the rotor chamber (4); The clean air outlet pipe (8) is connected at one end to the back of the rotor chamber (4) to discharge the adsorbed spinning waste gas; The desorption gas inlet pipe (9) is connected at the end to the turbine chamber (4) to deliver the high-temperature gas required for desorption into the turbine chamber (4); The delivery pipe (10) is initially connected to the front of the turbine chamber (4) to deliver the desorbed gas containing volatile organic compounds to the next process. Cooling gas flows into pipe (12), one end of which is connected to the turbine chamber (4), and low-temperature gas is introduced into the cooling zone to cool the zeolite; The cooling gas outlet pipe (11) is connected at one end to the turbine chamber (4) to transport the low-temperature gas to the next process.

9. A treatment method applicable to the spinning waste gas treatment device based on polyester filament spinning production according to any one of claims 1-8, characterized in that, Includes the following steps: S1. The spinning waste gas generated during the polyester filament spinning process is transported to the outer shell (1) for adsorption treatment of volatile organic compounds in the waste gas. S2. High-temperature desorption gas is introduced into the zeolite after adsorbing volatile organic compounds to remove the volatile organic compounds and transport them to an oxidation furnace for incineration. S3. The high-temperature gas in step S2 is reheated using a reheating assembly and then introduced into the zeolite to change the thermodynamic equilibrium state. S4. By using the switching component to change the direction of the high-temperature gas flow, the heat / mass transfer boundary layer on the zeolite surface is destroyed. S5. The incinerated gas is discharged after passing the test.

10. The treatment method of the spinning waste gas treatment device based on polyester filament spinning production according to claim 9, characterized in that: The temperature of the high-temperature desorbed gas is between 180℃ and 220℃, and the temperature after reheating is between 280℃ and 310℃.

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