Butadiene washing system

Abstract

The invention discloses a butadiene washing system, and relates to the technical field of butadiene washing, the butadiene washing system comprises: a fixing frame arranged on the ground; the treatment tank is fixedly mounted on the inner wall of the fixing frame; the air inlet pipe is communicated with the treatment tank; the flow guide frame is fixedly mounted on the inner wall of the fixing frame; the L-shaped pipe is fixedly mounted on the surface of the air inlet pipe; the protective umbrella is fixedly mounted at the bottom of the L-shaped pipe; one end of the water circulation device is fixedly installed on the outer wall of the fixing frame, the other end of the water circulation device is fixedly installed at the bottom of the flow guide frame, and the water circulation device is used for purifying and recycling a solution obtained after water washing; and the connecting pipe is fixedly installed on the surface of the water circulation device, the spraying range can be widened through rotation of the rotary spraying pipe, the spraying effect is improved, and the purity and quality of butadiene are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of butadiene water washing, and particularly to a butadiene water washing system. Background Art

[0002] The butadiene water washing system is mainly used to remove moisture and impurities from the gas stream during the production process of butadiene, or to separate them by means of water absorption.

[0003] The patent with the patent publication number CN204543931U relates to a butadiene recovery system, including a water washing tank, a first condenser, a separation tank, a second condenser and a recovery tank. In the butadiene recovery system of this patent, the tail gas flowing out of the reaction kettle is washed with water using the water washing tank. Since butadiene is insoluble in water, the substances soluble in water in the tail gas can be removed by water washing through the water washing tank, removing some impurities in the tail gas. The first condenser is set to liquefy the tail gas, and then the liquefied tail gas is introduced into the separation tank for evaporation separation. The butadiene and impurities are further separated by evaporation to increase the concentration of butadiene in the gas. The second condenser liquefies the butadiene to facilitate the storage of butadiene in the recovery tank. Therefore, the butadiene recovery system of this patent can be used to recover the butadiene in the tail gas flowing out of the reaction kettle, realizing the recovery and utilization of butadiene in the tail gas, rationally utilizing resources, reducing the tail gas emission and reducing the gas pollution.

[0004] In the above patent, the butadiene recovery system can be used to recover the butadiene in the tail gas flowing out of the reaction kettle, realizing the recovery and utilization of butadiene in the tail gas, rationally utilizing resources, reducing the tail gas emission and reducing the gas pollution. However, if too much gas enters, it may cause the equipment to be overwhelmed, resulting in overloading of the equipment load and affecting the processing efficiency. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides a butadiene water washing system, which solves the problems put forward in the above background art.

[0006] To achieve the above object, the present invention is realized by the following technical solutions: A butadiene water washing system, comprising: a fixed frame, the fixed frame is arranged on the ground; a treatment tank, the treatment tank is fixedly installed on the inner wall of the fixed frame; an air inlet pipe, the air inlet pipe is communicated with the treatment tank; a diversion frame, the diversion frame is fixedly installed on the inner wall of the fixed frame; an L-shaped pipe, the L-shaped pipe is fixedly installed on the surface of the air inlet pipe; an umbrella, the umbrella is fixedly installed at the bottom of the L-shaped pipe; a water circulation device, one end of the water circulation device is fixedly installed on the outer wall of the fixed frame, and the other end of the water circulation device is fixedly installed at the bottom of the diversion frame, and the water circulation device is used for purifying and recycling the solution after water washing; a connecting pipe, the connecting pipe is fixedly installed on the surface of the water circulation device; a support plate, the support plate is fixedly installed on the inner wall of the treatment tank; a motor, the motor is fixedly installed on the top of the support plate; a rotating spray pipe, the rotating spray pipe is rotatably installed at the bottom of the connecting pipe; a long rod, one end of the long rod is fixedly installed at the bottom of the motor, and the other end of the long rod is fixedly installed on the inner wall of the rotating spray pipe. The rotation of the long rod will drive the rotation of the rotating spray pipe. By rotating the rotating spray pipe, the spraying range can be increased, the spraying effect can be improved, and the purity and quality of butadiene can be improved.

[0007] According to the above technical solution, the inner wall of the diversion frame is set to be conical, and the sprayed water is recycled through the diversion frame. The rotating spray pipe is arranged above the air inlet pipe.

[0008] According to the above technical solution, a gas inlet speed control device for controlling the gas inlet speed and a dredging device for dredging the rotating spray pipe are arranged at the bottom of the rotating spray pipe. The control device includes a reciprocating screw rod, a through-hole plate and a baffle. The rotation of the rotating spray pipe drives the rotation of the reciprocating screw rod. The rotation of the reciprocating screw rod will drive the rotation of the baffle. The rotation of the baffle will intermittently block the air outlet of the through-hole plate. The reciprocating screw rod is fixedly installed at the bottom of the rotating spray pipe, the through-hole plate is fixedly installed on the inner wall of the air inlet pipe, and the baffle is fixedly installed at the bottom of the reciprocating screw rod.

[0009] According to the above technical solution, a moving frame is threadedly installed on the surface of the reciprocating screw rod. A fixed rod is fixedly installed on the top of the air inlet pipe. The fixed rod penetrates through the surface of the moving frame. A circular scraping plate is fixedly installed on the surface of the moving frame. An annular pushing frame is fixedly installed on the top of the circular scraping plate. An L-shaped frame is fixedly installed on the inner wall of the treatment tank. A convex block is fixedly installed on the surface of the L-shaped frame. A rotating plate is rotatably installed on the surface of the annular pushing frame. A limiting plate is fixedly installed on the surface of the annular pushing frame. The rotation of the reciprocating screw rod will drive the moving frame to reciprocate up and down along the fixed rod. The reciprocating up and down movement of the fixed rod will drive the circular scraping plate to reciprocate up and down.

[0010] According to the above technical solution, a first torsion spring is arranged between the annular pushing frame and the rotating plate. When the rotating plate is separated from the convex block, the elastic force of the first torsion spring itself will drive the rotating plate to reset. The limiting plate is arranged below the rotating plate.

[0011] According to the above technical solution, the dredging device includes a rotating plate, an arc plate and a square plate. The annular push frame moves upward to push the square plate to rotate upward. The upward rotation of the square plate will drive the rotating plate to rotate downward, and the downward rotation of the rotating plate will drive the arc plate to rotate downward. The rotating plate is rotatably installed on the surface of the rotating spray pipe. The arc plate is fixedly installed on the surface of the rotating plate. The square plate is fixedly installed on the side of the rotating plate away from the rotating spray pipe.

[0012] According to the above technical solution, a scraping plate is fixedly installed on the surface of the rotating plate. A fixing plate is fixedly installed on the inner wall of the rotating spray pipe. A dredging rod slidably penetrates through the surface of the fixing plate. The rotation of the scraping plate will push the dredging rod to move upward, and the upward movement of the dredging rod will dredge the spraying port of the rotating spray pipe.

[0013] According to the above technical solution, a second torsion spring is provided between the rotating plate and the rotating spray pipe. When the square plate is separated from the annular push frame, the elastic force of the second torsion spring itself will drive the rotating plate to reset. A first spring is provided between the fixing plate and the dredging rod. When the scraping plate is separated from the contact with the dredging rod, the elastic force of the first spring itself will drive the dredging rod to reset.

[0014] The present invention provides a butadiene water washing system. It has the following beneficial effects:

[0015] (1) In this invention, by introducing butadiene gas into the treatment tank through the air inlet pipe, the butadiene gas will be discharged from the bottom of the protective umbrella along the L-shaped pipe. The protective umbrella can effectively prevent the liquid from entering the air inlet pipe when the rotating nozzle sprays, resulting in too much liquid inside the air inlet pipe and affecting the subsequent entry of butadiene gas. At the same time, the butadiene gas is washed with water through the water circulation device and the rotating spray pipe to remove impurities in the butadiene gas, which helps to improve the purity and quality of butadiene.

[0016] (2) In this invention, by rotating the rotating spray pipe, the spraying range can be increased, the spraying effect can be improved, and the purity and quality of butadiene can be improved. The water after spraying will flow out from the bottom of the treatment tank and enter the water circulation device through the diversion frame. The water circulation device will purify the solution so that the water after spraying can be recycled, improving environmental protection.

[0017] (3) In this invention, the rotation of the rotating spray pipe drives the reciprocating spiral rod to rotate. The rotation of the reciprocating spiral rod will drive the baffle to rotate. The rotation of the baffle will intermittently block the air outlet of the through-hole plate. By making the gas enter the treatment tank intermittently, it is possible to prevent too much gas from entering, making it difficult for the equipment to process it at one time and resulting in a poor water washing effect, and preventing the impurities in the mixed liquid from adhering to the inner wall of the treatment tank for a long time, resulting in excessive accumulation of impurities and affecting the water washing effect.

[0018] (4) In this invention, the upward movement of the circular scraper will drive the annular push frame to move upward, and the upward movement of the annular push frame will drive the rotating plate to move upward. During the upward movement of the rotating plate, the rotating plate will contact the protrusion, and the rotating plate will be limited by the limiting plate, so that the rotating plate cannot rotate downward. Vibration is generated by the contact between the rotating plate and the protrusion, and the impurities attached to the circular scraper are shaken off by the vibration, thereby improving the cleaning effect.

[0019] (5) This invention rotates the arc plate to the outlet of the rotating nozzle, so that when the rotating nozzle sprays, water impacts the arc plate to produce splashing, and the water is sprayed more widely through splashing, thereby improving the spraying effect. At the same time, the rotation of the rotating plate will drive the scraper to rotate, and the rotation of the scraper will scrape off the impurities attached to the bottom of the rotating nozzle, preventing the accumulation of impurities and clogging the spray outlet of the rotating nozzle, thereby affecting the normal spraying of the rotating nozzle. At the same time, the rotation of the scraper will push the dredging rod to move upward, and the upward movement of the dredging rod will dredge the spray outlet of the rotating nozzle, thereby preventing impurities from clogging the spray outlet of the rotating nozzle, thereby reducing the spraying range, worsening the water washing effect, and affecting the normal operation of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the overall cross-sectional structure of the present invention;

[0022] Figure 3 This is a schematic diagram of the internal structure of the treatment tank of the present invention;

[0023] Figure 4 Schematic diagram of the cross-sectional structure of the air intake pipe of the present invention;

[0024] Figure 5 For the present invention Figure 4 A schematic diagram of the structure of part A in the middle;

[0025] Figure 6 Schematic diagram of the cross-sectional structure of the rotary nozzle of the present invention;

[0026] Figure 7 This is a structural schematic diagram of the connecting pipe and the rotating nozzle of the present invention.

[0027] In the figure: 1, fixed frame; 2, treatment tank; 3, intake pipe; 4, diversion frame; 5, L-shaped pipe; 6, protective umbrella; 7, water circulation device; 8, connecting pipe; 9, support plate; 10, motor; 11, long rod; 12, rotating spray pipe; 131, reciprocating screw rod; 132, through-hole plate; 133, baffle; 134, moving frame; 135, fixed rod; 136, circular scraping plate; 137, annular pushing frame; 138, L-shaped frame; 139, bump; 1310, rotating plate; 1311, limiting plate; 141, rotating plate; 142, arc-shaped plate; 143, square plate; 144, scraping plate; 145, fixing plate; 146, dredging rod. Detailed implementation manners

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0029] Please refer to Figures 1-5 , an embodiment of the present invention is: a butadiene water washing system, including: a fixed frame 1, the fixed frame 1 is arranged on the ground; a treatment tank 2, the treatment tank 2 is fixedly installed on the inner wall of the fixed frame 1; an intake pipe 3, the intake pipe 3 is communicated with the treatment tank 2; a diversion frame 4, the diversion frame 4 is fixedly installed on the inner wall of the fixed frame 1; an L-shaped pipe 5, the L-shaped pipe 5 is fixedly installed on the surface of the intake pipe 3; a protective umbrella 6, the protective umbrella 6 is fixedly installed at the bottom of the L-shaped pipe 5; a water circulation device 7, one end of the water circulation device 7 is fixedly installed on the outer wall of the fixed frame 1, and the other end of the water circulation device 7 is fixedly installed at the bottom of the diversion frame 4. The water circulation device 7 is used for purifying and recycling the solution after water washing; a connecting pipe 8, the connecting pipe 8 is fixedly installed on the surface of the water circulation device 7; a support plate 9, the support plate 9 is fixedly installed on the inner wall of the treatment tank 2; a motor 10, the motor 10 is fixedly installed on the top of the support plate 9; a rotating spray pipe 12, the rotating spray pipe 12 is rotatably installed at the bottom of the connecting pipe 8; a long rod 11, one end of the long rod 11 is fixedly installed at the bottom of the motor 10, and the other end of the long rod 11 is fixedly installed on the inner wall of the rotating spray pipe 12. By rotating the rotating spray pipe 12, the spraying range can be increased, the spraying effect can be improved, the purity and quality of butadiene can be improved. The sprayed water will flow out from the bottom of the treatment tank 2, enter the water circulation device 7 through the diversion frame 4, and the water circulation device 7 will purify the solution, so that the sprayed water can be recycled, improving environmental protection.

[0030] The inner wall of the diversion frame 4 is set to be conical, and the sprayed water is recycled through the diversion frame 4. The rotating spray pipe 12 is arranged above the intake pipe 3.

[0031] During the operation of this embodiment: By introducing butadiene gas into the treatment tank 2 through the intake pipe 3, the butadiene gas will be discharged from the bottom of the umbrella protection 6 along the L-shaped pipe 5. The umbrella protection 6 can effectively prevent liquid from entering the intake pipe 3 when the rotary nozzle 12 sprays, resulting in excessive liquid inside the intake pipe 3 and affecting the subsequent entry of butadiene gas. At the same time, the butadiene gas is washed with water through the water circulation device 7 and the rotary spray pipe 12 to remove impurities in the butadiene gas, which helps to improve the purity and quality of butadiene. At the same time, the motor 10 is started. The rotation of the motor 10 will drive the long rod 11 to rotate, and the rotation of the long rod 11 will drive the rotary spray pipe 12 to rotate. By rotating the rotary spray pipe 12, the spraying range can be increased, the spraying effect can be improved, and the purity and quality of butadiene can be improved. The sprayed water will flow out from the bottom of the treatment tank 2, pass through the diversion frame 4 and enter the water circulation device 7. The water circulation device 7 will purify the solution, enabling the sprayed water to be recycled and improving environmental protection.

[0032] Please refer to Figures 1-7 , on the basis of the above embodiment, in another embodiment of the present invention, a gas inlet speed control device for controlling the gas entry speed and a dredging device for dredging the rotary spray pipe 12 are provided at the bottom of the rotary spray pipe 12. The control device includes a reciprocating screw rod 131, a through-hole plate 132, and a baffle 133. The reciprocating screw rod 131 is fixedly installed at the bottom of the rotary spray pipe 12, the through-hole plate 132 is fixedly installed on the inner wall of the intake pipe 3, and the baffle 133 is fixedly installed at the bottom of the reciprocating screw rod 131. By allowing the gas to enter the treatment tank 2 intermittently, it is prevented that too much gas enters, making it difficult for the equipment to process it all at once and resulting in a deterioration of the water washing effect.

[0033] A moving frame 134 is threadedly installed on the surface of the reciprocating screw rod 131. A fixed rod 135 is fixedly installed at the top of the intake pipe 3. The fixed rod 135 passes through the surface of the moving frame 134. A circular scraping plate 136 is fixedly installed on the surface of the moving frame 134. An annular pushing frame 137 is fixedly installed at the top of the circular scraping plate 136. An L-shaped frame 138 is fixedly installed on the inner wall of the treatment tank 2. A convex block 139 is fixedly installed on the surface of the L-shaped frame 138. A rotating plate 1310 is rotatably installed on the surface of the annular pushing frame 137. A limiting plate 1311 is fixedly installed on the surface of the annular pushing frame 137. The liquid on the inner wall of the treatment tank 2 is scraped by the up-and-down reciprocating movement of the circular scraping plate 136, preventing the impurities in the mixed liquid from adhering to the inner wall of the treatment tank 2 for a long time and causing excessive accumulation of impurities.

[0034] A first torsion spring is provided between the annular pushing frame 137 and the rotating plate 1310. When the rotating plate 1310 is separated from the convex block 139, the elastic force of the first torsion spring itself will drive the rotating plate 1310 to reset. The limiting plate 1311 is arranged below the rotating plate 1310.

[0035] The dredging device includes a rotating plate 141, an arc-shaped plate 142 and a square plate 143. The rotating plate 141 is rotatably installed on the surface of the rotating nozzle 12. The arc-shaped plate 142 is fixedly installed on the surface of the rotating plate 141. The square plate 143 is fixedly installed on the side of the rotating plate 141 away from the rotating nozzle 12. When spraying through the rotating nozzle 12, the water impacts the arc-shaped plate 142 to generate sputtering, and through the sputtering, the water is sprayed more widely, improving the spraying effect.

[0036] A scraper 144 is fixedly installed on the surface of the rotating plate 141. A fixing plate 145 is fixedly installed on the inner wall of the rotating nozzle 12. A dredging rod 146 slidably penetrates through the surface of the fixing plate 145, preventing impurities from blocking the spraying port of the rotating nozzle 12, resulting in a reduced spraying range, a deteriorated water washing effect, and affecting the normal operation of the equipment.

[0037] A second torsion spring is arranged between the rotating plate 141 and the rotating nozzle 12. When the square plate 143 disengages from the annular pushing frame 137, the elastic force of the second torsion spring itself will drive the rotating plate 141 to reset. A first spring is arranged between the fixing plate 145 and the dredging rod 146. When the scraper 144 disengages from the contact with the dredging rod 146, the elastic force of the first spring itself will drive the dredging rod 146 to reset.

[0038] When this embodiment works: The rotation of the rotating nozzle 12 drives the reciprocating spiral rod 131 to rotate. The rotation of the reciprocating spiral rod 131 drives the baffle 133 to rotate. The rotation of the baffle 133 intermittently blocks the air outlet of the through-hole plate 132, preventing excessive gas from entering the processing tank 2, making it difficult for the equipment to process at one time, resulting in a deteriorated water washing effect. At the same time, the rotation of the reciprocating spiral rod 131 drives the moving frame 134 to reciprocate up and down along the fixed rod 135. The up and down reciprocation of the fixed rod 135 drives the circular scraper 136 to reciprocate up and down. Through the up and down reciprocation of the circular scraper 136, the liquid on the inner wall of the processing tank 2 is scraped off, preventing the impurities of the mixed liquid from adhering to the inner wall of the processing tank 2 for a long time, resulting in excessive accumulation of impurities and affecting the water washing effect. At the same time, when the circular scraper 136 moves upward, it drives the annular pushing frame 137 to move upward. The upward movement of the annular pushing frame 137 drives the rotating plate 1310 to move upward. During the upward movement of the rotating plate 1310, it contacts the convex block 139, and the rotating plate 1310 is limited by the limiting plate 1311, making the rotating plate 1310 unable to rotate downward. Through the contact between the rotating plate 1310 and the convex block 139, vibration is generated, and the impurities adhering to the circular scraper 136 are shaken off through the vibration, improving the cleaning effect.

[0039] The upward movement of the annular push frame 137 pushes the square plate 143 to rotate upward. The upward rotation of the square plate 143 drives the rotating plate 141 to rotate downward. The downward rotation of the rotating plate 141 drives the arc plate 142 to rotate downward. When the arc plate 142 rotates to the position of the spray outlet of the rotating nozzle 12, the water impact on the arc plate 142 during the spraying of the rotating nozzle 12 generates sputtering, which makes the water spray more widely through sputtering, improving the spraying effect. At the same time, when the rotating plate 141 rotates, it drives the scraper 144 to rotate. The rotation of the scraper 144 scrapes off the impurities adhering to the lower part of the rotating nozzle 12, preventing the accumulation of impurities from blocking the spray outlet of the rotating nozzle 12 and affecting the normal spraying of the rotating nozzle 12. At the same time, the rotation of the scraper 144 pushes the dredging rod 146 to move upward. The upward movement of the dredging rod 146 dredges the spray outlet of the rotating nozzle 12, preventing the blockage of the spray outlet of the rotating nozzle 12 by impurities, resulting in a reduced spraying range and a deteriorated water washing effect, which affects the normal operation of the equipment.

[0040] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A butadiene water washing system, characterized in that, A water washing device for improving the purity of butadiene, comprising: A fixing frame (1), and the fixing frame (1) is arranged on the ground; A treatment tank (2), and the treatment tank (2) is fixedly installed on the inner wall of the fixing frame (1); An air inlet pipe (3), and the air inlet pipe (3) is communicated with the treatment tank (2); A diversion frame (4), and the diversion frame (4) is fixedly installed on the inner wall of the fixing frame (1); An L-shaped pipe (5), and the L-shaped pipe (5) is fixedly installed on the surface of the air inlet pipe (3); An umbrella (6), and the umbrella (6) is fixedly installed at the bottom of the L-shaped pipe (5); A water circulation device (7), one end of the water circulation device (7) is fixedly installed on the outer wall of the fixing frame (1), the other end of the water circulation device (7) is fixedly installed at the bottom of the diversion frame (4), and the water circulation device (7) is used for purifying and recycling the washed solution; A connecting pipe (8), and the connecting pipe (8) is fixedly installed on the surface of the water circulation device (7); A support plate (9), and the support plate (9) is fixedly installed on the inner wall of the treatment tank (2); A motor (10), and the motor (10) is fixedly installed on the top of the support plate (9); A rotating spray pipe (12), and the rotating spray pipe (12) is rotatably installed at the bottom of the connecting pipe (8); A long rod (11), one end of the long rod (11) is fixedly installed at the bottom of the motor (10), and the other end of the long rod (11) is fixedly installed on the inner wall of the rotating spray pipe (12).

2. The butadiene water washing system according to claim 1, wherein: The inner wall of the diversion frame (4) is conical, the rotating spray pipe (12) is arranged above the air inlet pipe (3), and a gas inlet speed control device and a dredging device for dredging the rotating spray pipe (12) are arranged at the bottom of the rotating spray pipe (12).

3. The butadiene water washing system according to claim 2, characterized in that: The control device comprises a reciprocating screw rod (131), a through-hole plate (132) and a baffle (133), the reciprocating screw rod (131) is fixedly installed at the bottom of the rotating spray pipe (12), the through-hole plate (132) is fixedly installed on the inner wall of the air inlet pipe (3), and the baffle (133) is fixedly installed at the bottom of the reciprocating screw rod (131).

4. The butadiene water washing system according to claim 3, characterized in that: A moving frame (134) is threadedly installed on the surface of the reciprocating screw rod (131), a fixed rod (135) is fixedly installed on the top of the air inlet pipe (3), the fixed rod (135) penetrates through the surface of the moving frame (134), a circular scraping plate (136) is fixedly installed on the surface of the moving frame (134), a circular pushing frame (137) is fixedly installed on the top of the circular scraping plate (136), an L-shaped frame (138) is fixedly installed on the inner wall of the treatment tank (2), a convex block (139) is fixedly installed on the surface of the L-shaped frame (138), a rotating plate (1310) is rotatably installed on the surface of the circular pushing frame (137), and a limiting plate (1311) is fixedly installed on the surface of the circular pushing frame (137).

5. The butadiene water washing system according to claim 4, wherein: A first torsion spring is arranged between the circular pushing frame (137) and the rotating plate (1310), and the limiting plate (1311) is arranged below the rotating plate (1310).

6. The butadiene water washing system according to claim 5, characterized in that: The dredging device includes a rotating plate (141), an arc-shaped plate (142) and a square plate (143). The rotating plate (141) is rotatably installed on the surface of the rotating nozzle (12). The arc-shaped plate (142) is fixedly installed on the surface of the rotating plate (141). The square plate (143) is fixedly installed on the side of the rotating plate (141) away from the rotating nozzle (12).

7. The butadiene water washing system according to claim 6, wherein: A scraping plate (144) is fixedly installed on the surface of the rotating plate (141). A fixing plate (145) is fixedly installed on the inner wall of the rotating nozzle (12). A dredging rod (146) slidably penetrates through the surface of the fixing plate (145).

8. The butadiene water washing system according to claim 7, characterized in that: A second torsion spring is provided between the rotating plate (141) and the rotating nozzle (12). A first spring is provided between the fixing plate (145) and the dredging rod (146).

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