A waste gas treatment and purification system applied to acetyl citrate production

Abstract

The application relates to the field of waste gas treatment and discloses a waste gas treatment and purification system applied to acetyl citrate production, which comprises a tower body, a gas inlet for absorbing waste gas is communicated with the side surface of the tower body, a bottom plate is fixedly arranged at the position of the inner wall of the tower body which is lower than the gas inlet, a driving motor is fixedly arranged at the bottom center of the bottom plate, a middle shaft is fixedly arranged at the output end of the driving motor through a shaft coupling, the middle shaft penetrates through the bottom plate and extends to the inside of the tower body, a dust removal mechanism is arranged on the side surface of the middle shaft, and a disturbance mechanism is arranged in the inside of a filler box. A plurality of rotating fan blades are arranged to contact with spraying solution in the spraying tower, the fan blades generate certain viscosity, can adsorb dust and viscous substances in waste gas during rotation, and arc-shaped plates are arranged to make the fan blades shake during rotation, under the action of the shaking, the substances adhered to the surface of the fan blades are shaken off with the spraying solution, and the accumulation of dust impurities and viscous substances on the surface of the fan blades is avoided.

Description

Technical Field

[0001] This invention relates to the field of waste gas treatment, and more particularly to a waste gas treatment and purification system applied to the production of acetylic acid esters. Background Technology

[0002] The production of acetylic acid esters typically generates waste gas. This waste gas cannot be directly discharged into the atmosphere and requires multiple air treatment processes, including spray towers and activated carbon absorption towers. The spray tower, also known as a spray demister, works by colliding high-speed gas entering the tower with a liquid spray. This causes harmful gases in the gas to mix with the sprayed liquid and fall into a circulating water tank, thus removing the harmful gases. A spray tower is generally cylindrical, with the following components from bottom to top: circulating water tank, waste gas inlet, packing layer, spray heads, demister layer, and finally, clean gas outlet.

[0003] The packing material in a spray tower is generally stationary. The packing material increases the contact area between the gas and liquid phases through its complex surface structure. Spray towers typically use both structured and random packing. The latter, with its haphazard arrangement, increases the contact time between the gas and liquid phases, but also causes some waste gas to form channels, preventing complete contact with the spray solution. Furthermore, because the packing material is stationary, the channeled waste gas eventually accumulates inside the packing, negatively impacting gas purification efficiency. Additionally, dust, impurities, and sticky substances in the waste gas also negatively affect its flow within the packing material. Summary of the Invention

[0004] In view of the problem that the waste gas is prone to forming channels in the static packing, resulting in low contact efficiency with the spray solution, a waste gas treatment and purification system for the production of acetylic acid esters is proposed.

[0005] Its purpose is to first remove dust from the exhaust gas using a dust removal mechanism, and then to disturb the packing material using a disturbance mechanism, thereby disrupting the flow structure of the exhaust gas channel in the packing material and thus improving the contact efficiency of the gas-liquid two-phase substances.

[0006] The technical solution of the present invention is as follows: a waste gas treatment and purification system applied to the production of acetylic acid ester, comprising a tower body, an air inlet for absorbing waste gas connected to the side of the tower body, a base plate fixedly installed on the inner wall of the tower body below the air inlet, a drive motor fixedly installed at the bottom center of the base plate, a central shaft fixedly installed at the output end of the drive motor through a coupling, the central shaft penetrating the base plate and extending into the interior of the tower body, a packing box fixedly installed on the inner wall of the tower body, the side of the central shaft and the packing box being rotatably connected at the center through a bearing, the top of the central shaft extending into the interior of the packing box, and further comprising a dust removal mechanism installed on the side of the central shaft and a disturbance mechanism installed inside the packing box;

[0007] The dust removal mechanism includes a structured packing material disposed on the inner wall of the tower body and a rotating unit disposed on the side of the central axis. The rotating unit is used to adsorb impurities and viscous substances in the exhaust gas.

[0008] The disturbance mechanism includes a structured packing material II disposed at the top of the stuffing box, a partition cylinder disposed at the center of the bottom wall inside the stuffing box, several partition plates disposed on the side of the partition cylinder, a disturbance fan disposed on the side of the central axis, a cam disposed on the side of the central axis, and several disturbance units arranged in a ring array inside the stuffing box. The disturbance fan is provided in pairs and symmetrically disposed on both sides of the cam. The partition plates divide the space between the partition cylinder and the stuffing cylinder into several equal fan-shaped spaces. Each fan-shaped space is provided with a disturbance unit inside. The disturbance unit is used to agitate the bulk packing inside the stuffing box.

[0009] Furthermore, the rotating unit includes a fixed cylinder fixedly disposed on the side of the central axis, several fan blade groups fixedly disposed on the side of the fixed cylinder, and several arc-shaped plates fixedly disposed on the inner wall of the tower body. The several fan blade groups are arranged in a ring array and fixedly disposed on the side of the fixed cylinder. Each fan blade group contains multiple fan blades evenly arranged along the axial direction of the fixed cylinder. The number of arc-shaped plates is equal to the number of fan blades in each group. The several arc-shaped plates are evenly arranged along the axial direction of the fixed cylinder on the inner wall of the tower body. The arc-shaped plates of different heights are evenly surrounding the inner wall of the tower body. The end of each fan blade away from the central axis can abut against the side of the arc-shaped plate within one revolution during rotation.

[0010] Furthermore, the height of the dust removal mechanism is located between the air inlet and the stuffing box, the structured packing is located directly above the rotating unit, and the center of the structured packing is rotatably connected to the side of the central shaft through a bearing.

[0011] Furthermore, the disturbance unit includes a fixed tube fixedly disposed on the inner wall of each sector space, an absorber disposed on the side of the fixed tube, a rotating cylinder rotatably disposed at the end of the fixed tube, a disturbance rod fixedly disposed on the periphery of the rotating cylinder, a columnar groove formed in the inner wall of the rotating cylinder, a sliding cylinder slidably disposed on the inner wall of the columnar groove, a top rod fixedly disposed at the end of the sliding cylinder away from the rotating cylinder, a spring one disposed on the inner wall end face of the sliding groove, a driving member disposed on the inner wall of the sliding cylinder, a one-way member one disposed on the side of the fixed cylinder, and a one-way member two disposed inside the rotating cylinder.

[0012] Furthermore, the rotating cylinder is connected to the fixed tube, the columnar groove is located at the end of the rotating cylinder away from the fixed tube, the end of the push rod away from the sliding cylinder passes through the partition cylinder and abuts against the side wall of the cam, the two ends of the spring abut against the inner wall end face of the columnar groove and the end face of the sliding cylinder respectively, and multiple disturbance rods are provided and evenly divided into several groups. The several groups of disturbance rods are arranged in a ring array on the side of the rotating cylinder, and each group of disturbance rods is evenly arranged on the side of the rotating cylinder along the axial direction.

[0013] Furthermore, the absorbent includes a connecting pipe fixedly disposed on the side of the fixed pipe, an absorbent box fixedly disposed at the end of the connecting pipe away from the fixed pipe, the connecting pipe communicating with the fixed pipe, the end of the connecting pipe away from the fixed pipe penetrating the top of the structured packing material II, and several through holes being opened on the side of the absorbent box.

[0014] Furthermore, the driving component includes a central rod fixedly disposed at the center of the inner wall end face of the sliding cylinder, a spiral groove formed on the side of the central rod, a support frame fixedly disposed on the inner wall of the rotating cylinder, a protrusion disposed on the inner wall of the support frame, and a scraper frame fixedly disposed at the end of the central rod. The central rod is slidably disposed on the inner wall of the support frame, the cam is slidably disposed on the inner wall of the spiral groove, and a plurality of scrapers are fixedly disposed on the periphery of the scraper frame, each of the scrapers being slidably connected to the inner wall of the rotating cylinder.

[0015] Furthermore, the one-way component includes an annular groove on the end face of the rotating cylinder near the fixed cylinder, a plurality of axial grooves on the end face of the annular groove and arranged in a ring on the side of the rotating cylinder, a sliding plate slidably disposed on the inner wall of each axial groove, a vent hole on the side of each sliding plate, a spring two fixedly disposed on the end of each sliding plate away from the annular groove, a one-way turntable rotatably disposed on the side of the fixed cylinder, a top plate fixedly disposed on the side of the sliding plate near the one-way turntable, and a protrusion fixedly disposed on the side of the one-way turntable.

[0016] Furthermore, the disturbance rod located between the support frame and the fixed tube is connected to the rotating cylinder through a columnar through hole, and each of the axial sliding grooves is connected to the columnar through hole of the disturbance rod. The ends of the sliding plates away from the second spring are fixedly connected to each other by arc-shaped rods and are slidably disposed on the outside of the annular groove. The side of the protrusion near the top plate is provided with a right-angle groove, and the top plate abuts against the inner wall of the right-angle groove. The one-way turntable can achieve one-way rotation through a ratchet and pawl mechanism.

[0017] Furthermore, the second one-way component includes a connecting rod fixedly disposed at the end of the central rod away from the sliding cylinder, a rubber ring sleeved on the end of the connecting rod away from the central rod, a plug head slidably disposed on the side of the connecting rod, and a spring three fixedly disposed at the end of the connecting rod near the rubber ring. The inner wall of the plug head is slidably connected to the side of the rubber ring, and the end of the spring three away from the connecting rod abuts against the inner wall end face of the plug head. The plug head abuts against the communication port between the fixed tube and the rotating cylinder.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. By setting several rotating fan blades to contact the spray solution in the spray tower, the fan blades generate a certain viscosity, which can adsorb dust and sticky substances in the exhaust gas when rotating, thereby reducing the impact of dust and sticky substances on the flow of exhaust gas in the packing. At the same time, the arc plate is set to make the fan blades vibrate during rotation. Under the vibration, the substances adhering to the surface of the fan blades will be shaken off with the spray solution, avoiding the accumulation of dust, impurities and sticky substances on the surface of the fan blades.

[0020] 2. By setting up a disturbance rod, the rotating cylinder can drive the disturbance rod to repeatedly rotate forward and backward, disturbing the bulk packing in each sector space, making it difficult for the exhaust gas to form channels, and increasing the uniformity of the distribution of the spray solution and exhaust gas, thus greatly increasing the probability of contact between the two; on the other hand, after the packing is disturbed, some impurities that it picks up when in contact with the exhaust gas can also be shaken off, avoiding the packing from becoming clogged.

[0021] 3. By setting one-way component one and one-way component two when the rotating cylinder rotates, the compression and release of the gas inside the rotating cylinder forms a one-way flow state, so that clean spray solution inside the tower body is continuously sprayed into the packing box, thereby achieving the purpose of replenishing the spray solution inside each sector space and treating more waste gas. Compared with waiting for the spray solution to fall freely into the packing box, this setting undoubtedly increases the efficiency of the spray solution in treating waste gas. At the same time, the gas sprayed out by the disturbance rod can disturb the waste gas inside the packing box, thereby increasing the contact opportunity between the waste gas and the spray solution. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the external structure of the tower body of the present invention;

[0023] Figure 2 This is a schematic diagram of the internal structure of the tower body of the present invention;

[0024] Figure 3 This is a schematic diagram of the dust removal mechanism of the present invention;

[0025] Figure 4 This is a schematic diagram of the internal structure of the stuffing box of the present invention;

[0026] Figure 5 This is a schematic diagram showing the location distribution of the disturbance units in this invention;

[0027] Figure 6 This is a schematic diagram of the disturbance unit of the present invention;

[0028] Figure 7 This is a schematic diagram of the internal structure of the rotating cylinder of the present invention.

[0029] Figure 8 This is a schematic diagram of the structure of the driving component of the present invention.

[0030] Figure 9 This is a schematic diagram of the support frame of the present invention.

[0031] Figure 10 This is a schematic diagram of the structure of the central rod of the present invention;

[0032] Figure 11 For the present invention Figure 10 A magnified structural diagram of A in the middle;

[0033] Figure 12 This is a schematic diagram of the structure of the sliding plate of the present invention;

[0034] Figure 13 This is a schematic diagram of the structure of the annular groove and the axial sliding groove of the present invention;

[0035] Figure 14 For the present invention Figure 12 A magnified structural diagram of B in the diagram;

[0036] Figure 15 This is a schematic diagram of the unidirectional turntable of the present invention;

[0037] Figure 16 This is a schematic diagram of the pawl and ratchet in the unidirectional turntable of the present invention;

[0038] Figure 17 This is a schematic diagram of the structure of the second unidirectional component of the present invention.

[0039] In the diagram: 1. Tower body; 2. Drive motor; 3. Stuffing box; 4. Structured packing I; 5. Rotating unit; 51. Fixed cylinder; 52. Fan blade assembly; 53. Arc plate; 6. Structured packing II; 7. Separator cylinder; 8. Disruptor fan; 9. Disruptor unit; 901. Fixed pipe; 902. Connecting pipe; 903. Absorption box; 904. Rotating cylinder; 905. Disruptor rod; 906. Sliding cylinder; 907. Top 908. Rod; 909. Spring 1; 910. Center rod; 911. Spiral groove; 912. Support frame; 913. Protrusion; 914. Scraper frame; 915. Annular groove; 916. Axial slide groove; 917. Sliding plate; 918. Spring 2; 919. One-way turntable; 920. Top plate; 921. Protrusion; 922. Connecting rod; 923. Rubber ring; 924. Plug head; 925. Spring 3. Detailed Implementation

[0040] 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.

[0041] Example 1, referring to Figures 1-5This is the first embodiment of the present invention, providing a waste gas treatment and purification system for the production of acetylic acid esters. The system includes a tower body 1, with a gas outlet, a demister layer, and a spray device (common components of spray towers, not shown in the figures) at the top of the tower body 1. A gas inlet for absorbing waste gas is connected to the side of the tower body 1. A base plate is fixedly installed on the inner wall of the tower body 1 below the gas inlet. A drive motor 2 is fixedly installed at the center of the bottom of the base plate. A central shaft is fixedly installed at the output end of the drive motor 2 via a coupling. The central shaft passes through the base plate and extends into the interior of the tower body 1. A stuffing box 3 is fixedly installed. The side of the central shaft is rotatably connected to the stuffing box 3 at the center via a bearing. The top of the central shaft extends into the interior of the stuffing box 3. The stuffing box 3 also includes a dust removal mechanism installed on the side of the central shaft and a disturbance mechanism installed inside the stuffing box 3. The dust removal mechanism includes a structured packing 4 installed on the inner wall of the tower body 1, which is fixedly connected to the inner wall of the tower body 1. A rotating unit 5 is installed on the side of the central shaft. The rotating unit 5 is used to adsorb impurities and viscous substances in the exhaust gas. The structured packing 4 can slow down the upward flow speed of the exhaust gas, thereby allowing the exhaust gas dust removal mechanism to make full contact. The disturbance mechanism includes a structured packing 6 disposed on the top of the stuffing box 3, the structured packing 6 being detachably connected to the top of the stuffing box 3, the stuffing box 3 being filled with bulk packing, a partition cylinder 7 fixedly disposed at the center of the bottom wall inside the stuffing box 3, several partition plates fixedly disposed on the side of the partition cylinder 7, a disturbance fan 8 fixedly disposed on the side of the central shaft, a cam disposed on the side of the central shaft, the disturbance fan 8 and the cam rotating with the central shaft, several disturbance units 9 arranged in a ring array inside the stuffing box 3, a pair of disturbance fans 8 symmetrically disposed on both sides of the cam, several partition plates dividing the space between the partition cylinder 7 and the stuffing cylinder into several equal fan-shaped spaces, the fan-shaped spaces dividing the exhaust gas into several parts, thereby increasing the efficiency of the spray solution in treating the exhaust gas, and a disturbance unit 9 disposed inside each fan-shaped space, the disturbance unit 9 being used to agitate the bulk packing inside the stuffing box 3.

[0042] Specifically, the factory exhaust gas enters the tower body 1 through the inlet and flows upwards. Simultaneously, a spray device at the top of the tower body 1 sprays a solution that absorbs harmful gases in the exhaust gas. As the exhaust gas flows upwards from below the tower body 1, it first comes into contact with the dust removal mechanism, which absorbs dust, impurities, and sticky substances contained in the exhaust gas. As the exhaust gas continues to flow upwards, it passes through the structured packing 4 and enters the packing box 3. Under the action of the bulk packing, the solution comes into contact with the gas inside the packing box 3. Inside the packing box 3, the agitator fan 8 rotates with the central shaft, causing airflow around it. Simultaneously, the cam rotates with the central shaft, driving the agitator unit 9 to operate. The agitator unit 9 agitates the bulk packing, preventing the accumulation of exhaust gas that cannot contact the spray solution, thus ensuring sufficient contact between the exhaust gas and the spray solution in the packing box 3.

[0043] Example 2, refer to Figures 2-3 This is the second embodiment of the present invention, which differs from the first embodiment in that: the rotating unit 5 includes a fixed cylinder 51 fixedly disposed on the side of the central axis, several fan blade groups 52 fixedly disposed on the side of the fixed cylinder 51, and several arc-shaped plates 53 fixedly disposed on the inner wall of the tower body 1. The several fan blade groups 52 are arranged in a circular array and fixedly disposed on the side of the fixed cylinder 51. Each fan blade group 52 contains multiple fan blades evenly arranged along the axial direction of the fixed cylinder 51. The number of arc-shaped plates 53 is equal to the number of fan blades in each group. The several arc-shaped plates 53 are evenly arranged along the axial direction of the fixed cylinder 51 on the inner wall of the tower body 1. Arc-shaped plates 53 of different heights are evenly surrounding the inner wall of the tower body 1. The end of each fan blade away from the central axis can abut against the side of the arc-shaped plate 53 within one revolution during rotation. The height of the dust removal mechanism is located between the air inlet and the stuffing box 3. The structured packing 4 is located directly above the rotating unit 5. The center of the structured packing 4 is rotatably connected to the side of the central axis through a bearing.

[0044] Specifically, when the central shaft rotates, the fan blades rotate along with it. After passing through the packing box 3, the spray solution is no longer in a mist state, but forms water droplets. Most of these water droplets gather in the water storage pool at the bottom of the tower body 1, while the rest drips onto the surface of the fan blades. When the fan blades rotate, they will first come into contact with the exhaust gas. The fan blades with the spray solution on their surface have a certain degree of viscosity, so they can adsorb dust impurities and sticky substances in the exhaust gas onto their surface, thereby reducing the dust impurity content in the exhaust gas in advance and reducing the impact of dust and sticky substances on the flow of exhaust gas in the packing. At the same time, the structured packing 4 can slow down the speed of exhaust gas rise, allowing the fan blades to have sufficient contact time with the exhaust gas, further ensuring the dust removal efficiency of the dust removal mechanism.

[0045] Each fan blade slides against the corresponding arc-shaped plate 53 during rotation. Due to the upward curvature of the arc-shaped plate 53, the fan blades are bent upwards by the arc surface of the plate 53. After the fan blades slide out of the arc-shaped plate 53, they vibrate rapidly due to the sudden loss of support. Under this vibration, substances adhering to the surface of the fan blades are shaken off with the spray solution. Furthermore, the spray solution from the packing box 3 itself has a rinsing effect on the fan blades as it falls, thus preventing the accumulation of dust, impurities, and sticky substances on the surface of the fan blades from affecting their continuous operation. The remaining structure is the same as that in Embodiment 1.

[0046] Example 3, referring to Figures 5-8This is the third embodiment of the present invention, which differs from the second embodiment in that: the disturbance unit 9 includes a fixed tube 901 fixedly disposed on the inner wall of each fan-shaped space, the fixed tube 901 being located at the center of the fan-shaped surface near the inner wall of the stuffing box 3 in each fan-shaped space; an absorbent disposed on the side of the fixed tube 901; a rotating cylinder 904 rotatably disposed at the end of the fixed tube 901; a disturbance rod 905 fixedly disposed on the periphery of the rotating cylinder 904; and a columnar groove formed in the inner wall of the rotating cylinder 904. The sliding cylinder 906 is movably disposed on the inner wall of the columnar groove, the push rod 907 is fixedly disposed on the end of the sliding cylinder 906 away from the rotating cylinder 904, the spring 908 is disposed on the end face of the inner wall of the sliding groove, the spring 908 here plays the role of resetting the sliding cylinder 906 and the push rod 907, so that the end of the push rod 907 can always abut against the side of the cam, the driving component is disposed on the inner wall of the sliding cylinder 906, the one-way component 1 is disposed on the side of the fixed cylinder 51, and the one-way component 2 is disposed inside the rotating cylinder 904. The rotating cylinder 904 is connected to the fixed tube 901. The columnar groove is located at the end of the rotating cylinder 904 away from the fixed tube 901. The end of the push rod 907 away from the sliding cylinder 906 passes through the partition cylinder 7 and abuts against the side wall of the cam. There is a limit structure at the connection between the push rod 907 and the partition cylinder 7, so that the push rod 907 can only slide and cannot rotate. The two ends of the spring 908 abut against the inner wall end face of the columnar groove and the end face of the sliding cylinder 906, respectively. Multiple disturbance rods 905 are provided and are evenly divided into several groups. Several groups of disturbance rods 905 are arranged in a ring on the side of the rotating cylinder 904. Each group of disturbance rods 905 is evenly arranged on the side of the rotating cylinder 904 along the axial direction. The driving component includes a central rod 909 fixedly disposed at the center of the inner wall end face of the sliding cylinder 906, a spiral groove 910 formed on the side of the central rod 909, a support frame 911 fixedly disposed on the inner wall of the rotating cylinder 904, a protrusion 912 disposed on the inner wall of the support frame 911, and a scraper frame 913 fixedly disposed at the end of the central rod 909. The central rod 909 is slidably disposed on the inner wall of the support frame 911, and the cam is slidably disposed on the inner wall of the spiral groove 910. Several scrapers are fixedly disposed on the periphery of the scraper frame 913, and each scraper is slidably connected to the inner wall of the rotating cylinder 904.

[0047] Specifically, the push rods 907 in each sector space abut against the cam. When the cam rotates, the push rods 907 continuously extend and retract. When the push rods 907 extend and retract, they drive the sliding cylinder 906 to slide axially and repeatedly on the inner wall of the columnar groove, thereby driving the drive component to work. The central rod 909 in the drive component moves with the sliding cylinder 906. When the sliding cylinder 906 slides away from the cam, the central rod 909 also moves away from the cam. During the movement, the protrusion 912 slides in the spiral groove 910. Due to the limiting setting of the push rods 907 and the partition cylinder 7, the central rod 909 cannot rotate and can only move axially. The support frame 911 and the rotating cylinder 904 connected to it can only be forced to rotate 360° under the drive of the protrusion 912. Conversely, when the sliding cylinder 906 slides closer to the cam, the rotating cylinder 904 will reverse 360°.

[0048] As the rotating cylinder 904 rotates in both directions, its outer disturbance rod 905 rotates accordingly and agitates the surrounding loose bulk packing. After the bulk packing is agitated, the gas flow structure that forms channels within the packing is disrupted, allowing this gas to flow again and increasing the chance of contact with the spray solution. The repeated agitation of the packing by the disturbance rod 905 continuously disturbs the exhaust gas in the packing box 3, effectively preventing channeling and increasing the uniformity of the distribution of the spray solution and exhaust gas, thus greatly increasing the probability of contact between the two. On the other hand, after the packing is agitated, some impurities that adhere to it when in contact with the exhaust gas can also be shaken off, preventing the packing from becoming clogged.

[0049] Reference Figures 7-16 The one-way component includes an annular groove 914 formed on the end face of the rotating cylinder 904 near the fixed cylinder 51, a plurality of axial grooves 915 formed on the end face of the annular groove 914 and arranged in a ring on the side of the rotating cylinder 904, a sliding plate 916 slidably disposed on the inner wall of each axial groove 915, a vent hole formed on the side of each sliding plate 916, a spring 917 fixedly disposed on the end of each sliding plate 916 away from the annular groove 914, a one-way turntable 918 rotatably disposed on the side of the fixed tube 901, a top plate 919 fixedly disposed on the side of the sliding plate 916 near the one-way turntable 918, and a protrusion 920 fixedly disposed on the side of the one-way turntable 918.

[0050] Reference Figures 7-13The disturbance rod 905 located between the support frame 911 and the fixed tube 901 is connected to the rotating cylinder 904 through a columnar through hole. Each axial sliding groove 915 is connected to the columnar through hole of the disturbance rod 905. The end of the sliding plate 916 away from the spring 917 is fixedly connected to each other by an arc-shaped rod and slidably disposed on the outside of the annular groove 914. The protrusion 920 is provided with a right-angle groove on the side near the top plate 919. The top plate 919 abuts against the inner wall of the right-angle groove. The one-way turntable 918 can achieve one-way rotation through the ratchet and pawl mechanism. Through the ratchet and pawl mechanism, the one-way turntable 918 can only rotate when the top rod 907 approaches the cam, that is, when the rotating cylinder 904 absorbs gas from the outside.

[0051] Reference Figure 17 The second one-way component includes a connecting rod 921 fixedly disposed at the end of the central rod 909 away from the sliding cylinder 906, a rubber ring 922 sleeved on the end of the connecting rod 921 away from the central rod 909, a plug head 923 slidably disposed on the side of the connecting rod 921, and a spring 924 fixedly disposed at the end of the connecting rod 921 near the rubber ring 922. The inner wall of the plug head 923 is slidably connected to the side of the rubber ring 922, and the end of the spring 924 away from the connecting rod 921 abuts against the inner wall end face of the plug head 923. The plug head 923 abuts against the communication port between the fixed tube 901 and the rotating cylinder 904. The absorbent includes a connecting pipe 902 fixedly disposed on the side of the fixed pipe 901, and an absorbent box 903 fixedly disposed at the end of the connecting pipe 902 away from the fixed pipe 901. The connecting pipe 902 is connected to the fixed pipe 901, and the end of the connecting pipe 902 away from the fixed pipe 901 passes through the top of the structured packing 6. Several through holes are opened on the side of the absorbent box 903.

[0052] Specifically, during the axial back-and-forth movement of the sliding cylinder 906, the gas inside the rotating cylinder 904 is continuously compressed and released. Meanwhile, the one-way component one and the one-way component two cause the rotating cylinder 904 to absorb the clean spray solution from the outside through the absorber, and then discharge it into the stuffing box 3 through the through hole inside the disturbance rod 905.

[0053] First, consider the situation where the sliding cylinder 906 moves towards the central axis. At this time, the top plate 919 is stuck in the right-angle groove, so when it rotates, it is stuck by the right-angle side of the right-angle groove and cannot disengage from the protrusion 920. As a result, it can only rotate with the one-way turntable 918. At this time, the direction of rotation can separate the pawl and ratchet in the one-way turntable 918. Therefore, the one-way turntable 918 rotates with the rotating cylinder 904. At this time, the side through hole of the sliding plate 916 and the columnar through hole of the disturbance rod 905 are misaligned, so the disturbance is in a closed state.

[0054] On the other hand, the end face of the plugging head 923 is initially in contact with the connection between the fixed pipe 901 and the rotating cylinder 904. However, with a slight displacement of the sliding cylinder 906, the central rod 909 pulls the connecting rod 921. Due to the action of the rubber ring 922, although the plugging head 923 is under the action of the spring 924, when the connecting rod 921 is pulled, the plugging head 923 and the connecting rod 921 can temporarily synchronize with each other by means of the friction of the rubber ring 922. Therefore, the plugging head 923 is also pulled out by the connecting rod 921. At this time, the inside of the rotating cylinder 904 is under negative pressure and can only absorb gas from the connection between the fixed pipe 901 and the rotating cylinder 904. Under the absorption action of the rotating cylinder 904, the fixed pipe 901 transmits the suction force to the absorption box 903 through the connecting pipe 902. The absorption box 903 then absorbs a certain amount of clean spray solution from the space above the structured packing material 6 and transports it into the rotating cylinder 904. As the sliding cylinder 906 moves toward the central axis, the blocking head 923 also moves in the opposite direction against the friction of the rubber ring 922 under the action of the spring 924. When the sliding cylinder 906 moves the maximum distance toward the central axis, it blocks the connection between the fixed tube 901 and the rotating cylinder 904 again, and the one-way turntable 918 rotates one revolution with the rotating cylinder 904.

[0055] When the sliding cylinder 906 moves away from the central axis, the connecting rod 921 moves towards the fixed tube 901 inside the plug head 923, and the rubber ring 922 slides a certain distance inside the plug head 923. The plug head 923 increases the degree of blockage at the connection between the fixed tube 901 and the rotating cylinder 904. At this time, the rotating cylinder 904 rotates in another direction. The right-angled groove on the side of the protrusion 920 has no right-angled edge in this direction. Therefore, the top block can slide out of the protrusion 920 when it rotates with the rotating cylinder 904. Without the support of the protrusion 920, the frame composed of the sliding plate 916 slides a certain distance towards the fixed tube 901 under the action of the second spring 917. This makes the through hole on the side of the sliding plate 916 connect with the through hole of the disturbance rod 905. At this time, the gas inside the rotating cylinder 904 is compressed and forced to be ejected from the through hole of the disturbance rod 905 and into the stuffing box 3.

[0056] The rotating cylinder 904 contains a clean spray solution, which is sprayed out of the rotating cylinder 904 along with the gas inside. On the one hand, this replenishes the spray solution inside each sector space, thereby enabling the treatment of more waste gas. Compared to waiting for the spray solution to fall freely into the stuffing box 3, this arrangement undoubtedly increases the efficiency of the spray solution in treating waste gas. On the other hand, the gas ejected by the disturbance rod 905 can agitate the waste gas inside the stuffing box 3, thereby increasing the contact opportunity between the waste gas and the spray solution.

[0057] After the sliding plate 916 rotates one revolution with the rotating cylinder 904, the top plate 919 slides back into the right-angle groove from the other side of the protrusion 920, and the connection between the disturbance rod 905 and the rotating cylinder 904 is interrupted, so that the outside of the rotating cylinder 904 can absorb gas. When the rotating cylinder 904 rotates back and forth, the scraper on the side of the scraper frame 913 always slides relative to the inner wall of the rotating cylinder 904. During this process, the condensed spray solution on the inner wall of the rotating cylinder 904 is collected by the scraper and becomes a liquid flow. Finally, when the through hole of the disturbance rod 905 is opened, the disturbance rod 905 flows out into the packing, thus achieving the purpose of making full use of the spray solution.

[0058] It is worth noting that one-way components one and two cannot be replaced by one-way valves because the spray solution is in the form of a mist, while the inside of a one-way valve is relatively closed. If a one-way valve is used, the mist-like spray solution will condense inside the one-way valve in advance, making it impossible to produce the effect of spraying the spray solution. This will greatly reduce the efficiency of the spray solution in treating waste gas. The rest of the structure is the same as that in Example 2.

[0059] Based on embodiments 1-3, the working principle of this invention is as follows: When using this waste gas treatment system, after the drive motor 2 starts, it drives the central shaft to rotate. Inside the tower body 1, the waste gas rises from bottom to top, while the spray solution falls from top to bottom, and the two are mixed within the packing box 3. During this process, the central shaft drives the fan blades to rotate. The surface of the fan blades becomes sticky due to the water droplets formed by the spray solution, and adsorbs dust, impurities, and sticky substances from the rising waste gas. Simultaneously, the structured packing 4 slows down the rising rate of the waste gas, ensuring sufficient contact between the fan blades and the waste gas to improve dust removal efficiency. Furthermore, the fan blades vibrate due to sliding contact with the arc-shaped plate 53 during rotation, achieving self-cleaning of the fan blades. The exhaust gas continues to rise, flowing through the structured packing 4 into the stuffing box 3. The central shaft drives the agitator fan 8 and the cam to rotate. The agitator fan 8 agitates the airflow inside the stuffing box 3, increasing the contact efficiency between the exhaust gas and the spray solution. The cam causes the push rod 907 to extend and retract, driving the sliding cylinder 906 to slide, which in turn causes the central rod 909 to move axially, causing the rotating cylinder 904 to rotate in both directions. This allows the outer agitator rod 905 to rotate and agitate the bulk packing, disrupting the channel structure of the exhaust gas inside the packing and preventing exhaust gas accumulation. Simultaneously, with the cooperation of one-way components one and two, the airflow inside the rotating cylinder 904 forms a unidirectional flow effect. As the sliding cylinder 906 moves, the rotating cylinder 904 absorbs the clean spray solution from the outside through the absorber, and then discharges it into the stuffing box 3 through the through hole of the agitator rod 905, thereby increasing the utilization rate of the spray solution and improving its efficiency in treating exhaust gas.

[0060] 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 waste gas treatment and purification system for the production of acetylic acid ester, comprising a tower body (1), wherein the side of the tower body (1) is connected to an air inlet for absorbing waste gas, a base plate is fixedly installed on the inner wall of the tower body (1) below the air inlet, a drive motor (2) is fixedly installed at the bottom center of the base plate, a central shaft is fixedly installed at the output end of the drive motor (2) via a coupling, the central shaft passes through the base plate and extends into the interior of the tower body (1), a stuffing box (3) is fixedly installed on the inner wall of the tower body (1), the side of the central shaft is rotatably connected to the stuffing box (3) at the center via a bearing, and the top of the central shaft extends into the interior of the stuffing box (3), characterized in that, It also includes a dust removal mechanism located on the side of the central axis and a disturbance mechanism located inside the stuffing box (3); The dust removal mechanism includes a structured packing material (4) installed on the inner wall of the tower body (1) and a rotating unit (5) installed on the side of the central axis. The rotating unit (5) is used to adsorb impurities and viscous substances in the exhaust gas. The disturbance mechanism includes a regular packing 2 (6) set on the top of the packing box (3), a partition cylinder (7) set at the center of the bottom wall inside the packing box (3), several partition plates set on the side of the partition cylinder (7), a disturbance fan (8) set on the side of the central axis, a cam set on the side of the central axis, and several disturbance units (9) arranged in a ring array inside the packing box (3). The disturbance fan (8) is provided in pairs and symmetrically arranged on both sides of the cam. The partition plates divide the space between the partition cylinder (7) and the packing cylinder into several equal fan-shaped spaces. Each fan-shaped space is provided with a disturbance unit (9). The disturbance unit (9) is used to move the bulk packing inside the packing box (3). The rotating unit (5) includes a fixed cylinder (51) fixedly disposed on the side of the central axis, several fan blade groups (52) fixedly disposed on the side of the fixed cylinder (51), and several arc plates (53) fixedly disposed on the inner wall of the tower body (1). Several fan blade groups (52) are arranged in a ring and fixedly disposed on the side of the fixed cylinder (51). Each fan blade group (52) contains multiple fan blades evenly arranged along the axial direction of the fixed cylinder (51). The number of arc plates (53) is equal to the number of fan blades in each group. Several arc plates (53) are evenly arranged along the axial direction of the fixed cylinder (51) on the inner wall of the tower body (1). Arc plates (53) of different heights are evenly surrounded on the inner wall of the tower body (1). The end of each fan blade away from the central axis can abut against the side of the arc plate (53) within one revolution when rotating. The disturbance unit (9) includes a fixed tube (901) fixedly disposed on the inner wall of each fan-shaped space, an absorber disposed on the side of the fixed tube (901), a rotating cylinder (904) rotatably disposed at the end of the fixed tube (901), a disturbance rod (905) fixedly disposed on the periphery of the rotating cylinder (904), a columnar groove opened on the inner wall of the rotating cylinder (904), a sliding cylinder (906) slidably disposed on the inner wall of the columnar groove, a top rod (907) fixedly disposed on the end of the sliding cylinder (906) away from the rotating cylinder (904), a spring (908) disposed on the inner wall end face of the sliding groove, a driving member disposed on the inner wall of the sliding cylinder (906), a one-way member (1) disposed on the side of the fixed tube (51), and a one-way member (2) disposed inside the rotating cylinder (904). The rotating cylinder (904) is connected to the fixed tube (901). The columnar groove is located at the end of the rotating cylinder (904) away from the fixed tube (901). The end of the push rod (907) away from the sliding cylinder (906) passes through the partition cylinder (7) and abuts against the side wall of the cam. The two ends of the spring (908) abut against the inner wall end face of the columnar groove and the end face of the sliding cylinder (906) respectively. Multiple disturbance rods (905) are provided and are evenly divided into several groups. Several groups of disturbance rods (905) are arranged in a ring on the side of the rotating cylinder (904). Each group of disturbance rods (905) is evenly arranged on the side of the rotating cylinder (904) along the axial direction. The driving component includes a central rod (909) fixedly disposed at the center of the inner wall end face of the sliding cylinder (906), a spiral groove (910) opened on the side of the central rod (909), a support frame (911) fixedly disposed on the inner wall of the rotating cylinder (904), a protrusion (912) disposed on the inner wall of the support frame (911), and a scraper frame (913) fixedly disposed at the end of the central rod (909). The central rod (909) is slidably disposed on the inner wall of the support frame (911), the cam is slidably disposed on the inner wall of the spiral groove (910), and a plurality of scrapers are fixedly disposed on the periphery of the scraper frame (913). Each scraper is slidably connected to the inner wall of the rotating cylinder (904).

2. The waste gas treatment and purification system for the production of acetylic acid esters according to claim 1, characterized in that: The height of the dust removal mechanism is between the air inlet and the stuffing box (3). The structured packing (4) is located directly above the rotating unit (5). The center of the structured packing (4) is rotatably connected to the side of the central shaft through a bearing.

3. The waste gas treatment and purification system for the production of acetylic acid esters according to claim 1, characterized in that: The absorbent includes a connecting pipe (902) fixedly disposed on the side of the fixed pipe (901), and an absorbent box (903) fixedly disposed at the end of the connecting pipe (902) away from the fixed pipe (901). The connecting pipe (902) is connected to the fixed pipe (901), and the end of the connecting pipe (902) away from the fixed pipe (901) penetrates the top of the structured packing material II (6). The side of the absorbent box (903) is provided with several through holes.

4. The waste gas treatment and purification system for the production of acetylic acid esters according to claim 1, characterized in that: The one-way component includes an annular groove (914) on the end face of the rotating cylinder (904) near the fixed cylinder (51), a plurality of axial grooves (915) on the end face of the annular groove (914) and arranged in a ring on the side of the rotating cylinder (904), a sliding plate (916) slidably disposed on the inner wall of each axial groove (915), a vent hole on the side of each sliding plate (916), a spring (917) fixedly disposed on the end of each sliding plate (916) away from the annular groove (914), a one-way turntable (918) rotatably disposed on the side of the fixed tube (901), a top plate (919) fixedly disposed on the side of the sliding plate (916) near the one-way turntable (918), and a protrusion (920) fixedly disposed on the side of the one-way turntable (918).

5. The waste gas treatment and purification system for the production of acetylic acid esters according to claim 4, characterized in that: The disturbance rod (905) located between the support frame (911) and the fixed tube (901) is connected to the rotating cylinder (904) through the columnar through hole. Each of the axial sliding grooves (915) is connected to the columnar through hole of the disturbance rod (905). The end of the sliding plate (916) away from the second spring (917) is fixedly connected to each other by the arc rod and slidably disposed on the outside of the annular groove (914). The protrusion (920) is provided with a right angle groove on the side near the top plate (919). The top plate (919) abuts against the inner wall of the right angle groove. The one-way turntable (918) can achieve one-way rotation through the ratchet and pawl mechanism.

6. The waste gas treatment and purification system for the production of acetylic acid citrate according to claim 1, characterized in that: The second unidirectional component includes a connecting rod (921) fixedly disposed at the end of the central rod (909) away from the sliding cylinder (906), a rubber ring (922) sleeved on the end of the connecting rod (921) away from the central rod (909), a plug (923) slidably disposed on the side of the connecting rod (921), and a spring (924) fixedly disposed at the end of the connecting rod (921) near the rubber ring (922). The inner wall of the plug (923) is slidably connected to the side of the rubber ring (922), and the end of the spring (924) away from the connecting rod (921) abuts against the inner wall end face of the plug (923). The plug (923) abuts against the communication port between the fixed tube (901) and the rotating cylinder (904).

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