Tail gas washing treatment device and process based on polyphenylene sulfide production

Abstract

The application relates to the technical field of tail gas treatment and discloses a tail gas washing treatment device and process based on polyphenylene sulfide production, wherein the tail gas washing treatment device based on polyphenylene sulfide production comprises a dust collector main body, a mounting plate is arranged in the dust collector main body, a plurality of array distributed venturi tubes are arranged at the top of the mounting plate, a frame rod is fixedly connected to the bottom of the venturi tubes, a force storage and ejection mechanism and a plurality of expansion mechanisms are arranged in the frame rod from top to bottom, respectively, and a lower pressing rod is arranged through the center position of the force storage and ejection mechanism. The instantaneous air pressure is converted into the power of the force storage block and the threaded rod through the spring energy storage mode, the problem that the traditional air pressure driving force is too large to be uncontrollable and the impact is large is solved, the expansion mechanism synchronous release mechanism is realized, the lower pressing force is irrelevant to the air source, the bottom expansion device can be uniformly driven to work, the expansion mechanism is prevented from working instantaneously, and the service life of the expansion mechanism is prevented from being affected.

Description

Technical Field

[0001] This invention relates to the technical field of exhaust gas treatment, and in particular to an exhaust gas scrubbing and treatment device and process based on polyphenylene sulfide production. Background Technology

[0002] Polyphenylene sulfide (PPS) is a key high-performance material in the electronics, automotive, and aerospace fields. It is mainly produced by the polycondensation process of p-dichlorobenzene-sodium sulfide, which generates exhaust gas containing acidic gases (HCl, H2S), volatile organic compounds (p-dichlorobenzene, N-methylpyrrolidone), and fine PPS dust.

[0003] The exhaust gas scrubbing treatment unit is a core environmental protection supporting equipment in PPS production. Its core function is to neutralize and remove acidic gases by counter-current contact between alkaline scrubbing liquid and exhaust gas, while simultaneously capturing VOCs and fine dust through atomized spraying, thus purifying the exhaust gas. It can also recover PPS raw materials and solvents from the dust, reducing resource waste. This unit is directly linked to the PPS production process and is a key piece of equipment to ensure that PPS production meets environmental standards, reduces pollutant emissions, and maintains production continuity. The two form a synergistic system of production and environmental protection.

[0004] Adding a pulse-jet bag filter after the exhaust gas scrubbing treatment unit based on polyphenylene sulfide (PPS) production is crucial for separating dispersed particles from the gas or base gas, thus addressing the limitation of scrubbing units in completely removing fine dust, sticky dust, and dust entrained in mist droplets from the exhaust gas.

[0005] After use, the filter bags of a pulse jet baghouse dust collector accumulate a large amount of dust. When cleaning is needed, the filter bags can be cleaned by a pulse jet valve located at the top of the filter bag. The pulse valve instantly releases compressed air, which is injected into the filter bag through the venturi tube to form a high-speed airflow. This causes the filter bag to expand and shake rapidly, shaking off the attached dust into the dust hopper. In contrast, traditional pulse jet cleaning relies on compressed air diffusion through the venturi tube. The airflow energy decays rapidly along the filter bag axis, and dust easily accumulates, forming a blind spot for cleaning. Over time, this leads to increased filtration resistance and decreased dust removal efficiency. At the same time, traditional pulse jet cleaning relies solely on the peeling effect of airflow impact, which cannot break the adhesion between the dust and the filter bag fibers. As a result, dust easily clumps on the surface of the filter bag, forming a sticky bag. Summary of the Invention

[0006] Given that existing technologies, such as traditional pulse jet cleaning, have blind spots in dust removal and cannot destroy dust, a tail gas scrubbing treatment device and process based on polyphenylene sulfide production is proposed.

[0007] One aspect of this application provides a tail gas scrubbing and treatment device based on polyphenylene sulfide production, the purpose of which is to add an expansion mechanism that can simultaneously expand the contact filter bag for cleaning.

[0008] The technical solution of the present invention is as follows: a tail gas scrubbing and treatment device based on polyphenylene sulfide production, comprising a dust collector body, an installation plate provided inside the dust collector body, a plurality of arrayed venturi tubes provided on the top of the installation plate, a frame rod fixedly connected to the bottom of the venturi tubes, and a power-accumulating ejection mechanism and a plurality of expansion mechanisms respectively arranged from top to bottom inside the frame rod, the power-accumulating ejection mechanism being located at the bottom of the venturi tubes, and a plurality of expansion mechanisms being provided at the bottom of the power-accumulating ejection mechanism;

[0009] A downward pressure rod is installed through the center of the accumulator ejection mechanism. An energy storage mechanism is installed on the surface of the downward pressure rod. One side of the energy storage mechanism is limited by a locking mechanism. When the energy storage mechanism is pressed down, the locking mechanism separates from the energy storage mechanism, so that the energy storage mechanism drives the downward pressure rod to press down.

[0010] A snap-fit ​​ring is installed through the center of the expansion mechanism. The snap-fit ​​ring is threadedly connected to the surface of the threaded rod. A rotating ring is fixedly connected to the top surface of the snap-fit ​​ring. Multiple linkage grooves are opened on the top of the rotating ring. An installation ring is rotatably connected to the bottom surface of the snap-fit ​​ring. Multiple sliding frames arranged in a ring array are provided on the surface of the installation ring. An expansion groove is opened on the top of the sliding frame. An expansion arm is slidably snapped into the expansion groove. A linkage block is fixedly connected to the top of the expansion arm at the position corresponding to the linkage groove. The linkage block is slidably snapped into the linkage groove.

[0011] Furthermore, a top frame is fixedly installed on the surface of the energy storage mechanism. The top frame is fixedly connected to the frame rod. An installation sleeve is fixedly connected to the inner ring of the top frame. An air-gathering sleeve is fixedly connected to the top of the installation sleeve. A lower pressure ring is slidably connected to the inner wall of the air-gathering sleeve. A sliding column is fixedly connected to the bottom of the lower pressure ring. A sliding groove is opened at the top of the installation sleeve corresponding to the position of the sliding column. The sliding column is slidably connected to the sliding groove. A compression spring is sleeved on the surface of the sliding column. The compression spring is located between the bottom of the lower pressure ring and the top of the installation sleeve. An energy storage block is fixedly connected to the bottom surface of the lower pressure rod. An energy storage spring is sleeved on the surface of the lower pressure rod. The energy storage spring is located at the bottom of the sliding column and on the energy storage block. The bottom end of the lower pressure rod is fixedly connected to the top end of the threaded rod.

[0012] Furthermore, the snap-fit ​​mechanism is installed on one side of the bottom of the pressure ring, and a squeezing column is fixedly connected to one side of the bottom of the pressure ring. A pressure groove is opened on the mounting sleeve corresponding to the position of the pressure ring, and the squeezing column is slidably connected in the pressure groove. An installation groove is opened on the mounting sleeve corresponding to the position of the power storage block. A return spring is fixedly connected to the side wall of the installation groove. A sliding block is fixedly connected to the other end of the return spring. A locking block is fixedly connected to the other end of the sliding block. The locking block is snapped into the power storage block. A squeezing groove is opened in the sliding block corresponding to the position of the squeezing column.

[0013] Furthermore, one end of the extrusion column corresponding to the extrusion groove is designed with an inclined surface, and the extrusion groove is designed with an inclined surface corresponding to the extrusion column, so that the extrusion column slides in contact with the surface of the extrusion groove.

[0014] Furthermore, multiple mounting brackets are fixedly connected to the surface of the support pole, and the other end of each mounting bracket is fixedly connected to the outer ring wall of the mounting ring.

[0015] Furthermore, the energy storage block is a frustum design, and the locking block is a semi-frustum design.

[0016] Furthermore, a base frame is fixedly connected to the bottom of the support pole, and multiple fixing frames are fixedly connected between the surfaces of the support pole. A filter bag is snapped into the bottom of the venturi tube, and the filter bag is fitted onto the surface of the support pole.

[0017] Furthermore, the frame is composed of six longitudinal ring ribs, and the fixing frame is an equilateral hexagon, which is fixedly connected to the six longitudinal ring ribs.

[0018] Furthermore, one end of the expansion arm has an arc-shaped design, and the part of the arc-shaped side that contacts the filter bag is made of elastic material.

[0019] Furthermore, the present invention also provides a tail gas scrubbing treatment process based on polyphenylene sulfide production, including the following steps:

[0020] Step 1: Collect the dust- and pollutant-containing exhaust gas generated during the production of polyphenylene sulfide, and transport it through pipelines to a cyclone separator to initially remove dust particles;

[0021] Step 2: The pretreated exhaust gas enters the primary spray tower and comes into countercurrent contact with the alkaline spray liquid to remove acidic pollutants and some soluble impurities from the exhaust gas.

[0022] Step 3: The exhaust gas enters the secondary packed scrubbing tower, where the packing increases the contact area and allows it to fully react with the scrubbing liquid, thus deeply purifying the residual pollutants.

[0023] Step 4: The washed exhaust gas enters the demister to separate the liquid droplets and water mist entrained in the airflow, preventing it from affecting subsequent dust removal equipment;

[0024] Step 5: The exhaust gas after demisting is introduced into the pulse bag dust collector. The filter bags trap fine dust, and the filtration efficiency is ensured by periodic pulse jet cleaning.

[0025] Step Six: The purified exhaust gas is tested by an online monitoring system. After confirming that all indicators meet the standards, it is discharged into the air through a dedicated exhaust pipe.

[0026] The beneficial effects of this invention are:

[0027] 1. By using spring energy storage, instantaneous air pressure is converted into power for the accumulator block and threaded rod, solving the problem of uncontrollable and large impact caused by excessive traditional air pressure driving force. This enables a synchronous release mechanism for the expansion mechanism, where the downforce is independent of the air source and can evenly drive the bottom expansion device to work, preventing the expansion mechanism from working instantaneously, which would affect its lifespan.

[0028] 2. Through the combined action of the built-in extension mechanism of the frame and the high-pressure airflow, the filter bag is actively opened, which can specifically solve the pain points of traditional pulse cleaning, greatly improve the cleaning efficiency, reduce the problems of secondary adsorption and incomplete cleaning, reduce filter bag wear, and extend the service life of the filter bag. Attached Figure Description

[0029] Figure 1 This is a perspective view of the tail gas scrubbing and treatment device based on polyphenylene sulfide production according to the present invention;

[0030] Figure 2 This is a cross-sectional view of the main body of the dust collector of the present invention;

[0031] Figure 3 This is a schematic diagram of the dust collector body and mounting plate of the present invention.

[0032] Figure 4 This is a cross-sectional view of the filter bag of the present invention;

[0033] Figure 5 This is a schematic diagram of the installation of the Venturi tube and the support rod of the present invention;

[0034] Figure 6 This is a schematic diagram of the internal structure of the frame pole of the present invention;

[0035] Figure 7 This is a cross-sectional view of the gas-gathering sleeve of the present invention;

[0036] Figure 8 This is a schematic diagram of the mounting structure of the rotating ring and threaded rod of the present invention;

[0037] Figure 9 This is a schematic diagram of the mounting ring and expansion arm mounting structure of the present invention;

[0038] Figure 10 This is a cross-sectional view of the snap-fit ​​ring of the present invention;

[0039] Figure 11 For the present invention Figure 7 Schematic diagram of the state after the middle and lower pressure rings are pressed down.

[0040] In the picture:

[0041] 1. Dust collector body; 2. Mounting plate; 3. Venturi tube; 4. Frame rod; 5. Mounting bracket; 6. Mounting ring; 7. Sliding frame; 8. Expansion groove; 9. Expansion arm; 10. Linking block; 11. Snap ring; 12. Rotating ring; 13. Linking groove; 14. Threaded rod; 15. Top frame; 16. Air-collecting sleeve; 17. Lower pressure ring; 18. Sliding column; 19. Compression spring; 20. Lower pressure rod; 21. Mounting sleeve; 22. Sliding groove; 23. Energy storage spring; 24. Energy storage block; 25. Compression column; 26. Lower pressure groove; 27. Mounting groove; 28. Sliding block; 29. ​​Compression groove; 30. Locking block; 31. Return spring; 32. Fixed frame; 33. Base frame; 34. Filter bag. Detailed Implementation

[0042] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0043] Example 1, referring to Figure 1 - Figure 6 This is the first embodiment of the present invention, which provides a tail gas scrubbing and treatment device based on polyphenylene sulfide production. It includes a dust collector body 1, an installation plate 2 is provided inside the dust collector body 1, a plurality of arrayed Venturi tubes 3 are provided on the top of the installation plate 2, and a frame rod 4 is fixedly connected to the bottom of the Venturi tubes 3. A power storage ejection mechanism and a plurality of expansion mechanisms are respectively arranged from top to bottom in the frame rod 4. The power storage ejection mechanism is located at the bottom of the Venturi tubes 3, and a plurality of expansion mechanisms are provided at the bottom of the power storage ejection mechanism. Through the cooperation between the power storage ejection mechanism and the expansion mechanism, the instantaneous air pressure collected by the power storage ejection mechanism is converted into the power for the operation of the expansion mechanism.

[0044] A downward-pressing rod 20 is installed through the center of the accumulator ejection mechanism. An accumulator mechanism is provided on the surface of the downward-pressing rod 20. One side of the accumulator mechanism is limited by a locking mechanism. When the accumulator mechanism is pressed down, the locking mechanism separates from the accumulator mechanism, so that the accumulator mechanism drives the downward-pressing rod 20 to press down. This accumulator ejection mechanism converts the air pressure instantly, preventing the direct use of air pressure to drive the mechanism, which would result in excessive power, uncontrollable problems, and large impacts. At the same time, the limiting mechanism in the accumulator ejection mechanism can achieve mechanical locking to prevent accidental release.

[0045] A snap ring 11 is provided through the center of the expansion mechanism. The snap ring 11 is threadedly connected to the surface of the threaded rod 14. A rotating ring 12 is fixedly connected to the top surface of the snap ring 11. Multiple linkage grooves 13 are opened on the top of the rotating ring 12. The linkage grooves 13 are arc-shaped grooves, which allow the linkage block 10 to slide inside the linkage grooves 13. This allows the power of the rotating ring 12 and the linkage block 10 to be converted into the power of the linkage block 10 and the expansion arm 9.

[0046] The bottom surface of the snap ring 11 is rotatably connected to the mounting ring 6. The surface of the mounting ring 6 is provided with multiple sliding frames 7 arranged in a ring array. The top of the sliding frame 7 is provided with an expansion groove 8. An expansion arm 9 is slidably snapped into the expansion groove 8. Through the design of the groove and the protrusion, the expansion arm 9 can be snapped and slid in the expansion groove 8 to prevent the expansion arm 9 from shifting left or right, twisting or misaligning during the sliding process, and to ensure the uniqueness of the movement direction.

[0047] A connecting block 10 is fixedly connected to the top of the expansion arm 9 at the position corresponding to the connecting groove 13. The connecting block 10 is slidably engaged inside the connecting groove 13. The connecting groove 13 drives the connecting block 10 and the expansion arm 9 to move. The expansion arm 9 directly contacts the inner wall of the filter bag 34 and expands it outward, which can open the filter bag 34 from the inside. The inner wall of the filter bag 34 is forced to produce full-length and full-circumference tensile deformation. The mechanical stress tears the dust layer on the surface of the filter bag 34, especially for the sticky and moist dust contained in the production of polyphenylene sulfide, to avoid dust accumulation and the formation of a hard shell to block the filter bag 34, and reduce the increase in equipment resistance caused by incomplete dust removal.

[0048] Reference Figure 7 and Figure 11 A top frame 15 is fixedly installed on the surface of the energy storage mechanism. The top frame 15 is fixedly connected to the frame rod 4. An installation sleeve 21 is fixedly connected to the inner ring of the top frame 15. An air-gathering sleeve 16 is fixedly connected to the top of the installation sleeve 21. A lower pressure ring 17 is slidably connected to the inner wall of the air-gathering sleeve 16. The lower pressure ring 17 is completely fitted into the lower half cavity inside the air-gathering sleeve 16 and can slide inside the air-gathering sleeve 16.

[0049] A sliding column 18 is fixedly connected to the bottom of the pressure ring 17. A sliding groove 22 is provided on the top of the mounting sleeve 21 corresponding to the position of the sliding column 18. The sliding column 18 is slidably connected in the sliding groove 22. A compression spring 19 is sleeved on the surface of the sliding column 18. The compression spring 19 is located between the bottom of the pressure ring 17 and the top of the mounting sleeve 21. A power storage block 24 is fixedly connected to the bottom surface of the pressure rod 20. A power storage spring 23 is sleeved on the surface of the pressure rod 20. The power storage spring 23 is located between the bottom of the sliding column 18 and the power storage block 24. The bottom end of the pressure rod 20 is fixedly connected to the top end of the threaded rod 14. The power storage mechanism can drive the expansion device to reset and release synchronously. The expansion force is independent of the air source: once the spring has completed energy storage, the released downward pressure is determined only by the spring's own parameters and is independent of the subsequent air source pressure. Moreover, the power storage mechanism can uniformly drive the bottom expansion device to work. Compared with directly driving the expansion mechanism through air pressure, it can extend the life of the expansion mechanism.

[0050] Reference Figure 6 - Figure 7The snap-fit ​​mechanism is installed on one side of the bottom of the pressure ring 17. A squeezing column 25 is fixedly connected to one side of the bottom of the pressure ring 17. A pressure groove 26 is opened on the mounting sleeve 21 corresponding to the position of the pressure ring 17. The squeezing column 25 is slidably connected in the pressure groove 26. An mounting groove 27 is opened on the mounting sleeve 21 corresponding to the position of the power storage block 24. A return spring 31 is fixedly connected to the side wall of the mounting groove 27. A sliding block 28 is fixedly connected to the other end of the return spring 31. A locking block 30 is fixedly connected to the other end of the sliding block 28. The locking block 30 is snapped with the power storage block 24. A squeezing groove 29 is opened in the sliding block 28 corresponding to the position of the squeezing column 25.

[0051] Reference Figure 7 The end of the extrusion column 25 corresponding to the extrusion groove 29 is designed with a slope, and the extrusion groove 29 corresponds to the slope of the extrusion column 25. The extrusion column 25 slides against the surface of the extrusion groove 29. When the extrusion column 25 is inserted into the sliding block 28, the extrusion column 25 contacts the slope of the extrusion groove 29. The extrusion column 25 extrudes the extrusion groove 29, allowing the extrusion groove 29 to slide into the mounting groove 27, thereby separating the card block 30 from the power storage block 24.

[0052] Reference Figure 8 - Figure 9 Multiple mounting brackets 5 are fixedly connected to the surface of the frame rod 4. The other end of the mounting bracket 5 is fixedly connected to the outer ring wall of the mounting ring 6. By setting the mounting bracket 5, the expansion mechanism can be installed on the frame rod 4, which can facilitate the expansion mechanism to expand inside the frame rod 4.

[0053] Reference Figure 7 The power storage block 24 is a frustum design, and the locking block 30 is a semi-frustum design, which makes it easy for the top of the locking block 30 and the bottom of the power storage block 24 to be locked together and fixed. At the same time, when the power storage block 24 is reset, the inclined surface of the frustum will contact, so that the inclined surface of the top of the power storage block 24 can be reset through the inclined surface of the bottom of the locking block 30.

[0054] Reference Figure 5 The bottom of the support rod 4 is fixedly connected to the base frame 33, and multiple fixing frames 32 are fixedly connected between the surfaces of the support rod 4. The bottom of the venturi tube 3 is snapped with a filter bag 34, which is sleeved on the surface of the support rod 4. The six support rods 4 are fixedly installed by the fixing frames 32 and the filter bags 34 to ensure their stability.

[0055] Reference Figure 5 The support rod 4 is composed of six longitudinal ring ribs, and the fixing frame 32 is an equilateral hexagon. The fixing frame 32 is fixedly connected to the six longitudinal ring ribs. The whole structure is transformed into a hexagon by the support rod 4, the base frame 33, and the fixing frame 32. This arrangement evenly supports the support rod 4 and the inner wall of the filter bag 34, and the filter bag 34 is subjected to force distribution, avoiding local stress concentration. At the same time, the gap between the filter bag 34 and the support rod 4 is uniform, and the filter bag 34 can expand and contract as a whole during dust removal, reducing wear caused by local deformation.

[0056] Reference Figure 8 - Figure 10 One end of the expansion arm 9 has an arc-shaped design, and the part of the arc side that contacts the filter bag 34 is made of elastic material. The arc-shaped design can better fit the inside of the filter bag 34, and the contact part can be designed to be made of elastic material such as rubber to reduce friction and wear between the filter bag 34 and the support rod 4.

[0057] The working principle of this invention is as follows: Gas is injected through the blowpipe and nozzle at the top of the Venturi tube 3. When the gas is blown into the gas-gathering sleeve 16, the pressure ring 17 is pressed down by the air pressure. At the same time, the pressure ring 17 presses down and squeezes the compression spring 19 and the energy storage spring 23. Simultaneously, the pressure ring 17 drives the compression column 25 to slide down in the pressure groove 26 until it is inserted into the compression groove 29 in the sliding block 28. The inclined surface of the bottom end of the compression column 25 contacts the inclined surface of the compression groove 29. At this time, the compression groove 29 is squeezed and the return spring 31 is squeezed. When the sliding block 28 moves, it drives the locking block 30 to move. After the movement, the locking block 30 no longer blocks or limits the energy storage block 24. At this time, the energy storage spring 23 is compressed by the pressure of the sliding column 18 and acts on the energy storage block 24. At this time, the energy storage block 24 is released from the limit and will press down. The threaded rod 14 moves downwards synchronously, and when the threaded rod 14 moves downwards, it will synchronously drive the snap ring 11 to rotate. The rotating snap ring 11 drives the linkage groove 13 to rotate, and the linkage block 10 will rotate in the linkage groove 13. The linkage groove 13 drives the linkage block 10 and the expansion arm 9 to move, thereby expanding the expansion arm 9. The filter bag 34 is cleaned by the simultaneous expansion of multiple expansion arms 9. When the expansion arm 9 contacts the filter bag 34, it drives the filter bag 34 to expand. Multiple sets of expansion arms 9 expand outwards synchronously, and after accurately fitting the inner wall of the filter bag 34, they drive the entire section of the filter bag 34 to expand and vibrate evenly. This can completely remove the dust accumulated in the lower part of the filter bag 34, eliminate the blind spots of traditional dust removal, and ensure that the expansion amplitude of each section of the filter bag 34 is consistent through synchronous force, avoiding local dust residue.

[0058] After the expansion cleaning is completed, since the top pressure ring 17 is no longer squeezed by air pressure, the pressure ring 17 and the sliding column 18 can be reset by the elastic force of the storage spring 23 and the compression spring 19, which in turn drives the expansion mechanism to reset.

[0059] Example 2, refer to Figure 1 - Figure 4 The second embodiment of the present invention provides: a tail gas scrubbing treatment process based on polyphenylene sulfide production, employing a tail gas scrubbing treatment device based on polyphenylene sulfide production, comprising the following steps:

[0060] Step 1: Collect the dust- and pollutant-containing exhaust gas generated during the production of polyphenylene sulfide, and transport it through pipelines to a cyclone separator to initially remove dust particles;

[0061] Step 2: The pretreated exhaust gas enters the primary spray tower and comes into countercurrent contact with the alkaline spray liquid to remove acidic pollutants and some soluble impurities from the exhaust gas.

[0062] Step 3: The exhaust gas enters the secondary packed scrubbing tower, where the packing increases the contact area and allows it to fully react with the scrubbing liquid, thus deeply purifying the residual pollutants.

[0063] Step 4: The washed exhaust gas enters the demister to separate the liquid droplets and water mist entrained in the airflow, preventing it from affecting subsequent dust removal equipment;

[0064] Step 5: The exhaust gas after demisting is introduced into the pulse bag dust collector. The filter bag 34 traps fine dust, and the filtration efficiency is ensured by periodic pulse jet cleaning.

[0065] Step Six: The purified exhaust gas is tested by an online monitoring system. After confirming that all indicators meet the standards, it is discharged into the air through a dedicated exhaust pipe.

[0066] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A tail gas scrubbing and treatment device based on polyphenylene sulfide production, comprising a dust collector body (1), characterized in that: The dust collector body (1) is provided with an installation plate (2), and multiple arrayed Venturi tubes (3) are provided on the top of the installation plate (2). A frame rod (4) is fixedly connected to the bottom of the Venturi tubes (3). A filter bag (34) is snapped into the bottom of the Venturi tubes (3). The filter bag (34) is sleeved on the surface of the frame rod (4). A power-saving ejection mechanism and multiple expansion mechanisms are provided in the frame rod (4) from top to bottom. The power-saving ejection mechanism is located at the bottom of the Venturi tubes (3). Multiple expansion mechanisms are provided at the bottom of the power-saving ejection mechanism. A downward rod (20) is installed through the center of the accumulator ejection mechanism. An accumulator mechanism is installed on the surface of the downward rod (20). The accumulator mechanism is limited by a locking mechanism on one side. When the accumulator mechanism is pressed down, the locking mechanism separates from the accumulator mechanism, so that the accumulator mechanism drives the downward rod (20) to press down. A threaded rod (14) is provided through the center of the expansion mechanism. A snap ring (11) is threadedly connected to the surface of the threaded rod (14). A rotating ring (12) is fixedly connected to the top surface of the snap ring (11). Multiple linkage grooves (13) are opened on the top of the rotating ring (12). An installation ring (6) is rotatably connected to the bottom surface of the snap ring (11). Multiple sliding frames (7) arranged in a ring array are provided on the surface of the installation ring (6). An expansion groove (8) is opened on the top of the sliding frame (7). An expansion arm (9) is slidably snapped inside the expansion groove (8). A linkage block (10) is fixedly connected to the top of the expansion arm (9) at the position corresponding to the linkage groove (13). The linkage block (10) is slidably snapped inside the linkage groove (13). A top frame (15) is fixedly installed on the surface of the energy storage mechanism. The top frame (15) is fixedly connected to the frame rod (4). An installation sleeve (21) is fixedly connected to the inner ring of the top frame (15). An air-gathering sleeve (16) is fixedly connected to the top of the installation sleeve (21). A lower pressure ring (17) is slidably connected to the inner wall of the air-gathering sleeve (16). A sliding column (18) is fixedly connected to the bottom of the lower pressure ring (17). A sliding groove (22) is opened at the top of the installation sleeve (21) corresponding to the position of the sliding column (18). The sliding connection is in the sliding groove (22). A compression spring (19) is sleeved on the surface of the sliding column (18). The compression spring (19) is located between the bottom of the lower pressure ring (17) and the top of the mounting sleeve (21). A power storage block (24) is fixedly connected to the bottom surface of the lower pressure rod (20). A power storage spring (23) is sleeved on the surface of the lower pressure rod (20). The power storage spring (23) is located between the bottom of the sliding column (18) and the power storage block (24). The bottom end of the lower pressure rod (20) is fixedly connected to the top end of the threaded rod (14). The snap-fit ​​mechanism is installed on one side of the bottom of the pressure ring (17). A squeezing column (25) is fixedly connected to one side of the bottom of the pressure ring (17). A pressure groove (26) is opened on the mounting sleeve (21) corresponding to the position of the pressure ring (17). The squeezing column (25) is slidably connected in the pressure groove (26). An installation groove (27) is opened on the mounting sleeve (21) corresponding to the position of the power storage block (24). A reset spring (31) is fixedly connected to the side wall of the installation groove (27). A sliding block (28) is fixedly connected to the other end of the reset spring (31). A locking block (30) is fixedly connected to the other end of the sliding block (28). The locking block (30) is snapped with the power storage block (24). A squeezing groove (29) is opened in the sliding block (28) corresponding to the position of the squeezing column (25).

2. The tail gas scrubbing and treatment device based on polyphenylene sulfide production according to claim 1, characterized in that: The end of the extrusion column (25) corresponding to the extrusion groove (29) is designed with a slope, and the extrusion groove (29) corresponds to the slope of the extrusion column (25). The extrusion column (25) slides and fits on the surface of the extrusion groove (29).

3. The tail gas scrubbing and treatment device based on polyphenylene sulfide production according to claim 1, characterized in that: Multiple mounting brackets (5) are fixedly connected to the surface of the support rod (4), and the other end of the mounting bracket (5) is fixedly connected to the outer ring wall of the mounting ring (6).

4. The tail gas scrubbing and treatment device based on polyphenylene sulfide production according to claim 1, characterized in that: The power storage block (24) is a frustum design, and the locking block (30) is a semi-frustum design.

5. The tail gas scrubbing and treatment device based on polyphenylene sulfide production according to claim 1, characterized in that: The bottom of the support pole (4) is fixedly connected to a base frame (33), and multiple fixed frames (32) are fixedly connected between the surfaces of the support pole (4).

6. The tail gas scrubbing and treatment device based on polyphenylene sulfide production according to claim 5, characterized in that: The support rod (4) is composed of six longitudinal ring ribs, and the fixing frame (32) is an equilateral hexagon. The fixing frame (32) is fixedly connected to the six longitudinal ring ribs.

7. The tail gas scrubbing and treatment device based on polyphenylene sulfide production according to claim 1, characterized in that: One end of the expansion arm (9) is arc-shaped, and the part of the arc side that contacts the filter bag (34) is made of elastic material.

8. A tail gas scrubbing treatment process based on polyphenylene sulfide (PPS) production, employing the tail gas scrubbing treatment device based on PPS production as described in claim 1, characterized in that... Includes the following steps: Step 1: Collect the dust- and pollutant-containing exhaust gas generated during the production of polyphenylene sulfide, and transport it through pipelines to a cyclone separator to initially remove dust particles; Step 2: The pretreated exhaust gas enters the primary spray tower and comes into countercurrent contact with the alkaline spray liquid to remove acidic pollutants and some soluble impurities from the exhaust gas. Step 3: The exhaust gas enters the secondary packed scrubbing tower, where the packing increases the contact area and allows it to fully react with the scrubbing liquid, thus deeply purifying the residual pollutants. Step 4: The washed exhaust gas enters the demister to separate the liquid droplets and water mist entrained in the airflow, preventing it from affecting subsequent dust removal equipment; Step 5: The exhaust gas after demisting is introduced into the pulse bag dust collector. The filter bag (34) traps fine dust and cleans it with regular pulse jet cleaning to ensure filtration efficiency. Step Six: The purified exhaust gas is tested by an online monitoring system. After confirming that all indicators meet the standards, it is discharged into the air through the exhaust pipe.

Images