Tail gas purification device of styrene processing equipment

Abstract

The invention relates to the technical field of tail gas separation, in particular to a tail gas purification device of styrene processing equipment, which comprises a treatment box, a first connecting pipe and a second connecting pipe, and one end of the second connecting pipe extends into the treatment box; a liquid storage box is arranged at the top of the machine box, arc-shaped frames are symmetrically arranged on the inner side of the first connecting pipe and the inner side of the second connecting pipe, cavities are formed in the upper ends of the inner sides of the arc-shaped frames, coatings are embedded in the sides, close to the spherical shell, of the arc-shaped frames, the upper end areas of the coatings extend into the cavities, and the cavities communicate with the liquid storage box through liquid conveying pipes. The spherical shell capable of rotating is arranged at the front end of the conveying pipe, the spherical shell is filled with the activated carbon particles, adhesion of the activated carbon particles caused by self-polymerization of styrene monomers can be avoided, the gas passing rate between the activated carbon particles is decreased, and meanwhile adsorption sites on the surface of activated carbon are prevented from being adhered.

Description

Technical Field

[0001] The present invention relates to the technical field of tail gas separation, in particular to a tail gas purification device for styrene processing equipment. Background Art

[0002] The composition of the tail gas produced during the processing of styrene, such as polymerization, injection molding, and extrusion, is relatively complex, mainly depending on factors such as the processing technology, temperature, and the use of additives. The main components and their sources may be styrene monomer, volatile organic compounds, volatile plasticizers, and some acidic gases.

[0003] A publication numbered CN110755991A, entitled "A Method for Treating Styrene Waste Gas," belongs to the technical field of treating organic pollutants in waste gas. The method comprises the following steps: immersing carbon fibers in a butanol solution containing TMPOP and phosphoric acid or a phosphate, heating and activating the solution to obtain modified activated carbon fibers; loading the modified activated carbon fibers into an adsorber of an adsorption device; allowing the styrene-containing gas to adsorb from the bed, and desorbing the adsorbent; condensing and separating the organic mixed vapors produced by desorption; and adding a polymerization inhibitor to the separated styrene, recovering the styrene overflow. This method suppresses styrene polymerization during the desorption process, resulting in high desorption efficiency and a long service life for the activated carbon fibers.

[0004] In the above-mentioned prior art, an inhibitor is added after the adsorption of styrene tail gas to prevent the self-polymerization of styrene monomer. However, when the styrene tail gas passes through the adsorption device, the self-polymerization of the styrene monomer will cause the pores in the adsorption device to stick together and become clogged. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a tail gas purification device for styrene processing equipment.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: A tail gas purification device for styrene processing equipment is designed, comprising a treatment box, a first connecting pipe, and a second connecting pipe, wherein one end of the second connecting pipe extends into the interior of the treatment box: A spherical shell is rotatably provided at the internal joint of the first connecting tube and the second connecting tube. The inner side of the spherical shell is filled with activated carbon particles. The spherical shell is densely covered with pores, and the diameter of the spherical shell matches the inner diameters of the first connecting tube and the second connecting tube. A chassis is detachably installed between the outer upper ends of the first connecting tube and the second connecting tube. A driving member is provided in the chassis, and the driving member is used to drive the spherical shell to rotate. A liquid storage box is provided at the top of the chassis, and a polymerization inhibitor is placed in the liquid storage box. Arc-shaped frames are symmetrically arranged inside the first connecting pipe and the second connecting pipe. A chamber is provided at the upper end inside the arc-shaped frame. A coating is embedded on one side of the arc-shaped frame close to the spherical shell. The upper end area of the coating extends into the chamber. The chamber is communicated with the liquid storage box through an infusion pipe.

[0007] Preferably, the driving member includes a first motor, a retaining pin, and a keyway; The first motor is installed inside the chassis. The keyway is opened at the top position of the spherical shell. The retaining pin is inserted into the keyway, and the retaining pin is square. The top of the retaining pin is connected to the output shaft of the first motor.

[0008] Preferably, an outer cylinder is inserted at one end of the second connecting pipe located inside the processing box. A ring-shaped baffle is provided inside the second connecting pipe. The baffle is slidably arranged in a ring-shaped groove reserved at the end of the outer cylinder. Activated carbon particles are filled inside the outer cylinder.

[0009] Preferably, an inner cylinder is fixedly installed inside the outer cylinder. The inner cylinder is conical, and the end of the inner cylinder close to the baffle is open. The inner cylinder is covered with air holes, and activated carbon particles are filled in the cavity between the inner cylinder and the outer cylinder. A plurality of air outlet holes are arranged in a ring-shaped array on the outer cylinder inside the processing box. A flow guide cover is also provided at the end of the outer cylinder. The air outlet holes are located inside the flow guide cover.

[0010] Preferably, a secondary gear is installed on the upper part of the outer cylinder. A second motor is installed on the processing box. A main gear is installed on the output shaft of the second motor, and the main gear meshes with the secondary gear.

[0011] Preferably, an incomplete gear is fixedly installed at the end of the output shaft of the second motor. A frame is sleeved outside the incomplete gear. Rack bars are respectively fixed at the upper and lower ends inside the frame. The rack bars are intermittently meshed with the incomplete gear. An infusion cavity is arranged inside the frame. A plurality of liquid leakage pipes communicating with the infusion cavity are evenly arranged at the bottom of the frame, and the liquid leakage pipes are located above the port of the flow guide cover. A guide rod is also connected to one side of the frame. A sleeve is arranged on the processing box. When the frame moves, one end of the guide rod moves inside the sleeve.

[0012] Preferably, a pump body is installed on the top of the processing box. The water outlet end of the pump body is connected to the inside of the infusion cavity through a water passing hose.

[0013] Preferably, an alkaline solution is filled at the bottom of the processing box, and the water passing hose connected to the water inlet end of the pump body hangs down naturally and extends into the liquid level inside the processing box.

[0014] Preferably, a slope is provided at the bottom of the processing tank, and the height of the slope increases sequentially from left to right. A partition is vertically installed on one side inside the processing tank, and the water passing hose connected to the water inlet end of the pump body is located between the partition and the inner wall of the processing tank. A gap is provided between the bottom of the partition and the slope.

[0015] Preferably, a plurality of accommodation grooves are evenly formed on the slope.

[0016] The tail gas purification device of a styrene processing equipment proposed by the present invention has the beneficial effects that: in the tail gas purification device of the styrene processing equipment, a rotatable spherical shell is provided at the front end of the conveying pipe, activated carbon particles are filled inside the spherical shell, and fixed inhibitor application points are provided on the outer surface position of the spherical shell. As the spherical shell rotates, the inhibitor can be quickly applied to the outer surface of the spherical shell. The styrene monomer particles entrained in the gas will come into contact with the inhibitor outside the spherical shell and then pass through the spherical shell to enter the next stage of treatment. During this process, it can avoid the adhesion of activated carbon particles caused by the self-polymerization of styrene monomers, which reduces the gas passing rate between the activated carbon particles and also avoids the adhesion of the adsorption sites on the surface of the activated carbon. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic structural diagram of a tail gas purification device of a styrene processing equipment proposed by the present invention.

[0018] Figure 2 It is a schematic structural diagram of the position of the spherical shell of a tail gas purification device of a styrene processing equipment proposed by the present invention.

[0019] Figure 3 It is a schematic structural diagram of the positional relationship between the spherical shell and the arc-shaped frame of a tail gas purification device of a styrene processing equipment proposed by the present invention.

[0020] Figure 4 is Figure 2 an enlarged structural diagram of part A of a tail gas purification device of a styrene processing equipment proposed by the present invention.

[0021] Figure 5 It is a schematic internal structure diagram of the outer cylinder of a tail gas purification device of a styrene processing equipment proposed by the present invention.

[0022] Figure 6 It is a schematic structural diagram of the frame of a tail gas purification device of a styrene processing equipment proposed by the present invention.

[0023] Figure 7 It is a schematic internal structure diagram of the frame of a tail gas purification device of a styrene processing equipment proposed by the present invention.

[0024] In the figure: first connecting pipe 1, second connecting pipe 2, chassis 3, first motor 4, main gear 5, sub-gear 6, deflector 7, rack 8, frame 9, leakage pipe 10, incomplete gear 11, second motor 12, water hose 13, sleeve 14, guide rod 15, partition 16, processing box 17, slope 18, receiving groove 19, liquid storage box 20, infusion tube 21, arc frame 22, spherical shell 23, activated carbon particles 24, chamber 25, coating 26, bayonet 27, keyway 28, baffle 29, air outlet 30, outer tube 31, cavity 32, inner tube 33, infusion cavity 34. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0026] Example 1, with reference to Figures 1-4 A tail gas purification device for styrene processing equipment includes a treatment box 17, a first connecting pipe 1 and a second connecting pipe 2, wherein one end of the second connecting pipe 2 extends to the interior of the treatment box 17.

[0027] A spherical shell 23 is rotatably provided at the internal joint of the first connecting tube 1 and the second connecting tube 2. The inner side of the spherical shell 23 is filled with activated carbon particles. The spherical shell 23 is densely covered with pores, and the diameter of the spherical shell 23 matches the inner diameters of the first connecting tube 1 and the second connecting tube 2. A chassis 3 is detachably installed between the outer upper ends of the first connecting tube 1 and the second connecting tube 2. A driving member is provided in the chassis 3, and the driving member is used to drive the spherical shell 23 to rotate.

[0028] A liquid storage box 20 is set on the top of the chassis 3, and an inhibitor is placed in the liquid storage box 20. An arc frame 22 is symmetrically provided on the inner side of the first connecting tube 1 and the second connecting tube 2. A chamber 25 is provided at the upper end of the inner side of the arc frame 22. A coating 26 is embedded on the side of the arc frame 22 close to the spherical shell 23. The upper end area of the coating 26 extends into the chamber 25. The chamber 25 and the liquid storage box 20 are connected through an infusion tube 21.

[0029] The driving component includes a first motor 4, a pin 27 and a keyway 28. The first motor 4 is installed in the chassis 3. The keyway 28 is opened at the top position of the spherical shell 23. The pin 27 is inserted into the keyway 28, and the pin 27 is set in a square shape. The top of the pin 27 is connected to the output shaft of the first motor 4.

[0030] In the process of styrene production, a large amount of harmful substances are contained in the tail gas, and the tail gas needs to be treated. The tail gas of styrene contains styrene monomers, and styrene monomers are prone to self-polymerization. When this problem occurs, these self-polymerized polyethylene monomers will have a certain viscosity, adhere between activated carbon particles and bond the adsorption sites on the outer surface of activated carbon particles, and even cause blockage of some pipelines.

[0031] Therefore, a spherical shell 23 that can be driven to rotate by a first motor 4 is provided at the splicing position between the first connecting pipe 1 and the second connecting pipe 2. The inner diameters of the spherical shell 23, the first connecting pipe 1, and the second connecting pipe 2 are all matched with each other. The inside of the spherical shell 23 is filled with activated carbon particles. When the tail gas enters from the first connecting pipe 1, passes through the spherical shell 23, and enters the inside of the second connecting pipe 2, the activated carbon particles inside the spherical shell 23 will initially adsorb the substances in the waste gas. At the same time, under the drive of the first motor 4 above, the spherical shell 23 transmits kinetic energy to the spherical shell 23 through the cooperation of the pin 27 and the keyway 28, so that the spherical shell 23 can rotate inside the pipeline. During this process, the gas enters and exits from different positions outside the spherical shell 23, and the adsorption sites of the activated carbon particles inside can be fully utilized. Secondly, an arc-shaped frame 22 is detachably provided between the bottoms of the first connecting pipe 1 and the second connecting pipe 2. A chamber 25 is provided at the upper end inside the arc-shaped frame 22. The inhibitor stored in the chamber 25 comes from the upper liquid storage box 20. The liquid storage box 20 transports the inhibitor to the chamber 25 through a liquid delivery pipe 21, and the bottom of the liquid delivery pipe 21 is detachably inserted into the chamber 25. Since the coating 26 is partially embedded in the chamber 25, the inhibitor can wet the coating 26. The inhibitor at the upper end of the coating 26 flows to the lower end of the coating 26 due to gravity. The advantage of only wetting the upper end of the coating 26 is to prevent the whole coating 26 from being wet. After being squeezed by the spherical shell 23, too much inhibitor at the bottom will directly drip into the pipeline during the squeezing process, while wetting the upper end. After being squeezed, part of the inhibitor will be absorbed by the lower end position of the coating 26 and then transferred to the outer surface of the spherical shell 23. After the outer surface of the spherical shell 23 is coated with the inhibitor, when the relatively high-temperature tail gas passes through the spherical shell 23, it will come into contact with the outer surface of the spherical shell 23. During the contact process, due to the action of the inhibitor, the self-polymerization problem of styrene monomers can be inhibited, and further, the problem that the activated carbon particles adhere together and the gap between the particles decreases can be avoided.

[0032] Example 2, refer to Figure 5, the difference between this embodiment and Embodiment 1 is that an outer cylinder 31 is inserted at one end of the second connecting pipe 2 located inside the processing box 17. A ring-shaped baffle 29 is arranged inside the second connecting pipe 2. The baffle 29 is slidably arranged in a ring-shaped groove reserved at the end of the outer cylinder 31. Activated carbon particles are filled in the outer cylinder 31. An inner cylinder 33 is fixedly installed inside the outer cylinder 31. The inner cylinder 33 is arranged in a conical shape, and the end of the inner cylinder 33 close to the baffle 29 is open. The inner cylinder 33 is covered with air holes, and the activated carbon particles are filled in the cavity 32 between the inner cylinder 33 and the outer cylinder 31. A number of air outlet holes 30 are annularly and arrayedly distributed on the outer cylinder 31 inside the processing box 17. A flow guide cover 7 is also arranged at the end position of the outer cylinder 31. The air outlet holes 30 are located inside the flow guide cover 7.

[0033] A secondary gear 6 is installed on the upper part of the outer cylinder 31. A second motor 12 is installed on the processing box 17. A main gear 5 is installed on the output shaft of the second motor 12, and the main gear 5 meshes with the secondary gear  6.

[0034] The gas after preliminary treatment will enter the inner cylinder 33 along the opening at one end of the outer cylinder 31. Since the other end of the outer cylinder 31 is closed by snap-fitting with a cover body, after entering the conical inner cylinder 33, some of the gas will pass through the air holes on the inner wall of the inner cylinder 33 and enter the cavity 32. Activated carbon particles are filled in the cavity 32. The gas will undergo secondary adsorption and separation to adsorb some substances with smaller particles. Subsequently, the tail gas is discharged from the air outlet holes 30 and discharged through the flow guide cover 7. The size of the activated carbon particles in the cavity 32 is smaller than the size of the activated carbon particles inside the spherical shell 23. The activated carbon with larger particles has larger pores and can first adsorb larger particulate matters or high-concentration pollutants in the gas to prevent them from quickly blocking the micropores of the subsequent small-particle activated carbon, achieving a preliminary interception effect. The small-particle activated carbon has a larger specific surface area and richer micropores and is used to adsorb small-molecule pollutants such as VOCs and toxic gases to ensure the final purification effect.

[0035] Secondly, by using the cooperation between the second motor 12, the main gear 5 and the secondary gear 6, the outer cylinder 31 and the inner cylinder 33 will be driven to rotate together inside the second connecting pipe 2. During the rotation process, the activated carbon particles inside the cavity 32 can always be in a moving state, continuously changing the position of contact with the gas, improving the adsorption effect, and at the same time, it can also adjust the gap between the particles to prevent the gap between the activated carbon particles from decreasing after extrusion, thereby affecting the ventilation efficiency.

[0036] Embodiment 3, refer to Figures 6-7, The difference between this embodiment and Embodiment 1 and Embodiment 2 is that an incomplete gear 11 is fixedly installed at the end of the output shaft of the second motor 12. A frame 9 is sleeved outside the incomplete gear 11. Rack bars 8 are respectively fixed at the upper and lower ends inside the frame 9. The rack bars 8 are intermittently engaged with the incomplete gear 11. An infusion cavity 34 is arranged inside the frame 9. A plurality of liquid leakage pipes 10 communicating with the infusion cavity 34 are evenly arranged at the bottom of the frame 9, and the liquid leakage pipes 10 are located above the port of the diversion cover 7. One side of the frame 9 is also connected with a guide rod 15. A sleeve 14 is arranged on the treatment box 17. When the frame 9 moves, one end of the guide rod 15 moves inside the sleeve 14.

[0037] A pump body is installed on the top of the treatment box 17. The water outlet end of the pump body is connected to the inside of the infusion cavity 34 through a water connection hose 13. The bottom of the treatment box 17 is filled with an alkaline solution, and the water connection hose 13 connected to the water inlet end of the pump body hangs down naturally and extends below the liquid level inside the treatment box 17.

[0038] An alkaline liquid is filled at the bottom of the treatment box 17. Water is transported into the infusion cavity 34 inside the frame 9 through the pump body and the water connection hose 13, and the alkaline solution is discharged through a plurality of liquid leakage pipes 10 at the lower end. The alkaline solution can contact the gas discharged from the lower diversion cover 7, thereby treating the acidic gas in the gas. The alkaline solution is a liquid commonly used in the prior art that can neutralize acidic gas. In order to make the leaked liquid contact the gas more fully, an incomplete gear 11 is arranged at the end of the output shaft of the second motor 12. When the incomplete gear 11 rotates clockwise and contacts the upper rack bar 8, it drives the frame 9 to move to the left. When the incomplete gear 11 contacts the lower rack bar 8, it drives the frame 9 to move to the right. During the periodic movement of the frame 9, the leaked solution will form a water curtain at the end position of the diversion cover 7, so that the tail gas can fully contact the solution.

[0039] Embodiment 4, refer to Figure 1 , The difference between this embodiment and Embodiment 1, Embodiment 2 and Embodiment 3 is that a slope 18 is arranged at the bottom of the treatment box 17, and the height of the slope 18 increases from left to right. A partition 16 is vertically installed on one side inside the treatment box 17, and the water connection hose 13 connected to the water inlet end of the pump body is located between the partition 16 and the inner wall of the treatment box 17. A gap is arranged between the bottom of the partition 16 and the slope 18, and a plurality of accommodation grooves 19 are evenly opened on the slope 18.

[0040] The bottom of the treatment tank 17 is provided with a slope 18, and multiple receiving grooves 19 are arranged on the slope 18. The receiving grooves 19 can retain some precipitated substances, and the lower end of the water passing hose 13 connected to the water inlet end of the pump body is located at the high point of the slope 18. At the same time, it is separated by a partition plate 16, and there is a gap between the partition plate 16 and the slope 18 for the liquid to pass through. In this way, most of the generated precipitated substances will gather at the lower end of the slope 28, avoiding the problem of blockage caused by a large amount of precipitated substances entering the chamber 25.

[0041] The working principle of this device is as follows: During the production of styrene, a large amount of harmful substances are contained in the generated tail gas, and the tail gas needs to be treated. The tail gas of styrene contains styrene monomers, and styrene monomers are prone to self-polymerization. When this problem occurs, these self-polymerized polyethylene monomers will have a certain viscosity, adhere between the activated carbon particles and bond the adsorption sites on the outer surface of the activated carbon particles, and even cause blockage problems in some pipelines.

[0042] Therefore, a spherical shell 23 that can be driven to rotate by the first motor 4 is provided at the splicing joint between the first connecting pipe 1 and the second connecting pipe 2. The inner diameters of the spherical shell 23, the first connecting pipe 1, and the second connecting pipe 2 are all matched with each other. The inside of the spherical shell 23 is filled with activated carbon particles. When the tail gas enters from the first connecting pipe 1, passes through the spherical shell 23, and enters the inside of the second connecting pipe 2, the activated carbon particles inside the spherical shell 23 will initially adsorb the substances in the waste gas. At the same time, the spherical shell 23 is driven by the first motor 4 above, and the kinetic energy is transmitted to the spherical shell 23 through the cooperation of the pin 27 and the keyway 28, so that the spherical shell 23 can rotate inside the pipeline. During this process, the gas enters and exits from different positions outside the spherical shell 23, which can make full use of the adsorption sites of the activated carbon particles inside. Secondly, an arc-shaped frame 22 is detachably provided between the bottoms of the first connecting pipe 1 and the second connecting pipe 2. A chamber 25 is provided at the upper end inside the arc-shaped frame 22. The inhibitor stored in the chamber 25 comes from the upper liquid storage box 20. The liquid storage box 20 transports the inhibitor into the chamber 25 through the infusion pipe 21, and the bottom of the infusion pipe 21 is detachably inserted into the chamber 25. Since the coating 26 is partially embedded in the chamber 25, the inhibitor can wet the coating 26. The inhibitor at the upper end of the coating 26 flows to the lower end of the coating 26 due to gravity. The advantage of only wetting the upper end of the coating 26 is to prevent the whole coating 26 from being wetted. After being squeezed by the spherical shell 23, too much inhibitor at the bottom will directly drip into the pipeline during the squeezing process, while wetting the upper end. After being squeezed, part of the inhibitor will be absorbed by the lower end position of the coating 26 and then transferred to the outer surface of the spherical shell 23. After the outer surface of the spherical shell 23 is coated with the inhibitor, when the relatively high-temperature tail gas passes through the spherical shell 23, it will come into contact with the outer surface of the spherical shell 23. During the contact process, due to the action of the inhibitor, the problem of self-polymerization of styrene monomers can be inhibited, and further, the problem that the activated carbon particles adhere together and the gap between the particles decreases can be avoided.

[0043] The preliminarily treated gas will enter the inner cylinder 33 along the opening at one end of the outer cylinder 31. Since the other end of the outer cylinder 31 is closed by clamping with a cover body, after entering the conical inner cylinder 33, part of the gas will pass through the air holes on the inner wall of the inner cylinder 33 and enter the cavity 32. And activated carbon particles are filled in the cavity 32. The gas will undergo secondary adsorption and separation to adsorb some substances with smaller particles. Subsequently, the tail gas is discharged from the air outlet hole 30 and discharged through the diversion cover 7. The size of the activated carbon particles in the cavity 32 is smaller than the size of the activated carbon particles inside the spherical shell 23. The activated carbon with larger particles has larger pores and can first adsorb larger particulate matters or high-concentration pollutants in the gas to avoid quickly blocking the micropores of the subsequent small-particle activated carbon, playing a preliminary interception effect. The small-particle activated carbon has a larger specific surface area and richer micropores, and is used to adsorb small-molecule pollutants such as VOCs and toxic gases to ensure the final purification effect.

[0044] Secondly, by utilizing the cooperation between the second motor 12, the main gear 5 and the auxiliary gear 6, the outer cylinder 31 and the inner cylinder 33 will be driven to rotate inside the second connecting pipe 2. During the rotation process, the activated carbon particles inside the cavity 32 can always be in a moving state, continuously changing the position of contact with the gas, improving the adsorption effect, and at the same time, it can also adjust the gap between the particles, avoiding the reduction of the gap between the activated carbon particles after extrusion, which in turn affects the ventilation efficiency.

[0045] An alkaline liquid is filled at the bottom of the treatment tank 17. The water is transported into the liquid infusion cavity 34 inside the frame 9 through the pump body and the water conveying hose 13, and the alkaline solution is discharged through multiple liquid leakage pipes 10 at the lower end. The alkaline solution can come into contact with the gas discharged by the flow guide cover 7 below, thereby treating the acidic gas in the gas. The alkaline solution is selected from the liquids commonly used in the prior art that can neutralize acidic gases. In order to make the leaked liquid contact the gas more fully, an incomplete gear 11 is arranged at the end of the output shaft of the second motor 12. When the incomplete gear 11 rotates clockwise and contacts the rack 8 above, it drives the frame 9 to move to the left. When the incomplete gear 11 contacts the rack 8 below, it drives the frame 9 to move to the right. During the periodic movement of the frame 9, the leaked solution will form a water curtain at the end position of the flow guide cover 7, so that the tail gas can fully contact the solution.

[0046] The bottom of the treatment tank 17 is provided with a slope 18, and multiple receiving grooves 19 are arranged on the slope 18. The receiving grooves 19 can retain some precipitated substances, and the lower end of the water conveying hose 13 connecting the water inlet end of the pump body is located at the high point of the slope 18 and is separated by a partition 16 at the same time. There is a gap between the partition 16 and the slope 18 for the liquid to pass through. In this way, most of the precipitated substances generated will gather at the lower end of the slope 28, avoiding the problem that a large amount of precipitated substances enter the chamber 25 and cause blockage.

[0047] The above is only the preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent replacements or changes, and should be covered within the protection scope of the present invention.

Claims

1. An exhaust gas purification device for styrene processing equipment, including a processing tank (17), a first connecting pipe (1) and a second connecting pipe (2), one end of the second connecting pipe (2) extends into the interior of the processing tank (17), and it is characterized in that: A spherical shell (23) is rotatably arranged at the splicing part inside the first connecting pipe (1) and the second connecting pipe (2). Activated carbon particles are filled inside the spherical shell (23). The spherical shell (23) is densely covered with air holes, and the diameter of the spherical shell (23) matches the inner diameters of the first connecting pipe (1) and the second connecting pipe (2). A machine case (3) is detachably installed between the upper parts outside the first connecting pipe (1) and the second connecting pipe (2). A driving part is arranged in the machine case (3) to drive the spherical shell (23) to rotate by the driving part; A liquid storage box (20) is arranged at the top of the machine case (3), and a polymerization inhibitor is placed in the liquid storage box (20). Arc-shaped frames (22) are symmetrically arranged on the inner sides of the first connecting pipe (1) and the second connecting pipe (2). A chamber (25) is arranged at the upper end inside the arc-shaped frame (22). A coating (26) is embedded on the side of the arc-shaped frame (22) close to the spherical shell (23). The upper end area of the coating (26) extends into the chamber (25). The chamber (25) is communicated with the liquid storage box (20) through a liquid delivery pipe (21).

2. The tail gas purification device of the styrene processing equipment according to claim 1, characterized in that, The driving part includes a first motor (4), a retaining pin (27) and a keyway (28); The first motor (4) is installed in the machine case (3). The keyway (28) is opened at the top position of the spherical shell (23). The retaining pin (27) is inserted into the keyway (28), and the retaining pin (27) is square. The top of the retaining pin (27) is connected to the output shaft of the first motor (4).

3. The tail gas purification device of the styrene processing equipment according to claim 1, characterized in that An outer cylinder (31) is inserted at one end of the second connecting pipe (2) located inside the processing tank (17). An annular baffle (29) is arranged on the inner side of the second connecting pipe (2). The baffle (29) is slidably arranged in an annular groove reserved at the end of the outer cylinder (31). Activated carbon particles are filled in the outer cylinder (31).

4. The tail gas purification device of the styrene processing equipment according to claim 3, characterized in that, An inner cylinder (33) is fixedly installed inside the outer cylinder (31). The inner cylinder (33) is conical, and the end of the inner cylinder (33) close to the baffle (29) is open. The inner cylinder (33) is densely covered with air holes, and activated carbon particles are filled in the cavity (32) between the inner cylinder (33) and the outer cylinder (31). A plurality of air outlet holes (30) are annularly and arrayedly distributed on the outer cylinder (31) inside the processing tank (17). A flow guide cover (7) is also arranged at the end position of the outer cylinder (31). The air outlet holes (30) are located inside the flow guide cover (7).

5. The tail gas purification device of the styrene processing equipment according to claim 4, characterized in that, A secondary gear (6) is installed on the upper part of the outer cylinder (31). A second motor (12) is installed on the processing tank (17). A main gear (5) is installed on the output shaft of the second motor (12), and the main gear (5) meshes with the secondary gear (6).

6. The tail gas purification device of the styrene processing equipment according to claim 5, characterized in that, An incomplete gear (11) is fixedly installed at the end of the output shaft of the second motor (12). A frame (9) is sleeved outside the incomplete gear (11). Rack bars (8) are respectively fixed at the upper and lower ends inside the frame (9). The rack bars (8) are intermittently engaged with the incomplete gear (11). An infusion cavity (34) is arranged inside the frame (9). A plurality of liquid leakage pipes (10) communicating with the infusion cavity (34) are uniformly arranged at the bottom of the frame (9), and the liquid leakage pipes (10) are located above the port of the diversion cover (7). One side of the frame (9) is also connected with a guide rod (15). A sleeve (14) is arranged on the treatment box (17). When the frame (9) moves, one end of the guide rod (15) moves inside the sleeve (14).

7. The tail gas purification device of the styrene processing equipment according to claim 6, characterized in that, A pump body is installed at the top of the treatment box (17). The water outlet end of the pump body is communicated with the inside of the infusion cavity (34) through a water passing hose (13).

8. The tail gas purification device of the styrene processing equipment according to claim 7, characterized in that, The bottom of the treatment box (17) is filled with an alkaline solution, and the water passing hose (13) connected to the water inlet end of the pump body hangs down naturally and extends into the position below the liquid level inside the treatment box (17).

9. The tail gas purification device of the styrene processing equipment according to claim 8, characterized in that, A slope (18) is arranged at the bottom of the treatment box (17), and the height of the slope (18) increases sequentially from left to right. A partition plate (16) is vertically installed on one side inside the treatment box (17), and the water passing hose (13) connected to the water inlet end of the pump body is located between the partition plate (16) and the inner wall of the treatment box (17). A gap is arranged between the bottom of the partition plate (16) and the slope (18).

10. The tail gas purification device of the styrene processing equipment according to claim 9, characterized in that, A plurality of accommodation grooves (19) are uniformly formed on the slope (18).

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