A sulfonation reaction device

Abstract

The present application provides a sulfonation reaction device, belonging to the technical field of sulfonation, including: a first partition plate, a conical flexible sheet, a floating ring, a rotating ring, a liquid inlet, an air inlet mechanism, a support ring, and a control mechanism; the first partition plate is fixedly connected inside the housing, the feed pipe is connected to the housing and is located above the first partition plate, there are multiple reaction tubes, and multiple reaction tubes all pass through the first partition plate. The conical flexible sheets are provided in the same number corresponding to the reaction tubes, and each conical flexible sheet is connected to one reaction tube. Each floating ring is sleeved on one conical flexible sheet, the rotating ring is rotatably connected to the floating ring, and the liquid inlet is opened on the side wall of the rotating ring; the air inlet mechanism is used to convey gas into the reaction tube, the support ring is slidably connected inside the rotating ring, the support ring can block the liquid inlet, and the control mechanism is used to move the support ring downward when the gas flow rate increases. The present application can improve the film forming uniformity and can also improve the reaction rate and effect.

Description

Technical Field

[0001] The present application relates to the technical field of sulfonation, and in particular to a sulfonation reaction device. Background Art

[0002] Sulfonation is a chemical reaction that introduces sulfonic groups into organic molecules. Sulfonation has the functions of increasing the water solubility of organic compounds, adjusting acidity and alkalinity, improving ionicity and synthesizing intermediates. Sulfonation has important application value in chemical synthesis, material science, and drug development, and is widely used in chemical synthesis and industrial production. Common sulfonation reaction devices include multi-tubular falling film reactors, etc.

[0003] Referring to the Chinese patent document with announcement number CN209997596U and subject name of a membrane sulfonation reactor sulfonation tube regulating feed device, a shell is provided in the patent, and a plurality of reaction tubes are arranged in the shell. An inverted convex inner sleeve is fixedly provided on the inner side of the reaction tube, and the inverted convex inner sleeve includes an upper large outer diameter sleeve and a lower small outer diameter sleeve. The outer surface of the large outer diameter sleeve is sealed and fitted with the inner wall of the reaction tube, and a first annular channel is provided between the outer side of the small outer diameter sleeve and the inner wall of the reaction tube. A sealing plate is provided on the top of the shell, and a nozzle is provided on the sealing plate. The lower end of the nozzle extends into the inverted convex inner sleeve. A connecting pipe connected to the first annular channel is inlaid on the sulfonator shell, and the connecting pipe is connected through a high-precision rotor flowmeter feed pipe. During the reaction, the gas enters the inverted convex inner sleeve along the nozzle, and the material enters the first annular channel from the feed pipe through the high-precision rotor flowmeter and the connecting pipe. The first annular channel allows the material to form a membrane, and the gas and the membrane undergo a sulfonation reaction.

[0004] Referring to the above technical solution, when the sulfonation reaction is carried out, due to the fixed position of the connecting pipe, the material entering from the feed pipe can only enter the area of ​​the first annular channel facing the connecting pipe, which affects the uniformity of the film formed by the material in the first annular channel, thereby affecting the sulfonation reaction rate and reaction effect. Summary of the invention

[0005] In order to improve the technical problem that the reaction rate and reaction effect of the sulfonation reaction are affected by uneven film formation, the present application provides a sulfonation reaction device.

[0006] The present application provides a sulfonation reaction device, which adopts the following technical scheme: a sulfonation reaction device includes a shell, a reaction tube, a liquid inlet pipe, a liquid outlet pipe, a feed pipe, a first baffle, a conical flexible sheet, a floating ring, a rotating ring, a liquid inlet, an air intake mechanism, a support ring and a control mechanism; the first baffle is horizontally fixedly connected in the shell, the feed pipe is connected to the side wall of the shell and is located above the first baffle, a plurality of reaction tubes are vertically arranged, and the plurality of reaction tubes all pass through the first baffle and are fixedly connected to the first baffle, the conical flexible sheets are arranged in the same number corresponding to the reaction tubes, and each conical flexible sheet is connected to the upper end of a reaction tube, each floating ring is sleeved on a conical flexible sheet, each rotating ring is rotatably connected to the floating ring, and the liquid inlet is opened on the side wall of the rotating ring; the air intake mechanism is arranged above the shell, the air intake mechanism is used to transport gas into the reaction tube, the support ring is slidably connected in the rotating ring, the support ring can block the liquid inlet, the control mechanism is arranged on the support ring, and the control mechanism is used to move the support ring downward when the gas flow rate increases.

[0007] By adopting the above technical solution, when a sulfonation reaction is required, the material first enters the shell from the feed pipe and falls on the first partition, and then the material gradually increases in the shell, and the material submerges the floating ring and part of the rotating ring. At this time, the buoyancy and gravity are balanced, and the material enters the reaction tube through the gap between the liquid inlet and the support ring and forms a film. The air intake mechanism inputs gas into the reaction tube, and the gas reacts with the membrane in the reaction tube. When the gas flow rate increases, the control mechanism controls the support ring to move downward, the gap between the liquid inlet and the support ring increases, and the amount of liquid entering the reaction tube increases.

[0008] In the present application, by setting the floating ring, the rotating ring and the conical flexible sheet, when the material is input into the shell, under the action of buoyancy and its own gravity, each rotating ring can always maintain the same stable distance from the liquid surface, thereby improving the uniformity of the material entering each reaction tube and reducing the risk of local overheating of the reaction tube. The rotation of the rotating ring can facilitate the material to enter the reaction tube evenly from all angles, which is beneficial to improving the uniformity of the membrane. At the same time, the overflow feeding method can reduce the obstruction of the gas, facilitate the contact between the gas and the membrane, and help improve the reaction effect and efficiency of the sulfonation reaction.

[0009] By setting the control mechanism, when the gas flow rate increases, the support ring can move downward with the increase of the gas flow rate, so that the amount of material entering the reaction tube can be increased with the increase of the gas flow rate. On the one hand, it can improve the conversion rate of the reaction and the output of the product. On the other hand, it can reduce the occurrence of over-sulfonation, which is beneficial to improve the reaction effect of the sulfonation reaction.

[0010] Optionally, a second partition is horizontally arranged above the first partition in the shell, the feed pipe is located below the second partition, the multiple reaction tubes all pass through the second partition and are fixedly connected to the second partition, and an overflow hole is opened on the second partition.

[0011] By adopting the above technical solution, the second partition and the overflow hole are set, so that when the material increases in the shell, the material first contacts the second partition and then enters the top of the second partition through the overflow hole, thereby reducing the impact of material input on the liquid level, facilitating the maintenance of the liquid level, and reducing the obstruction of the material by the second partition to reduce the impact force of the material, thereby facilitating the material to enter the reaction tube evenly.

[0012] Optionally, an annular plate is coaxially arranged in the shell, the annular plate is arranged between the first partition plate and the second partition plate, and a plurality of flow holes are arranged in an array on the annular partition plate.

[0013] By adopting the above technical solution and setting the annular plate, the material entering the shell from the feed pipe is first gathered in the area between the shell and the annular plate, and then the gathered liquid enters the area between the first partition plate and the second partition plate through the flow hole, which facilitates the uniform diffusion of the material between the first partition plate and the second partition plate, reduces the impact force of the material, and is conducive to ensuring the uniformity of the material entering the reaction tube.

[0014] Optionally, the air intake mechanism includes an air intake pipe connected to the top of the shell, the bottom of the air intake pipe is rotatably connected to a plurality of spirally distributed air outlet pipes, and a guide plate distributed in a cross shape is fixedly connected to the shell below the air outlet pipes.

[0015] By adopting the above technical solution, when air intake is needed, the gas enters the air outlet pipe from the air inlet pipe and pushes the air outlet pipe, the air outlet pipe rotates and outputs the gas, the output gas diffuses at the top of the shell, and then moves down into the reaction tube under the guidance of the guide plate.

[0016] By setting the air outlet pipe and the guide plate, the gas can be quickly dispersed and fill the top of the shell, reducing the risk of more air intake into the reaction tube facing the air inlet pipe, which is beneficial to improving the uniformity of the amount of gas entering each reaction tube, reducing the risk of local overheating, and is beneficial to improving the overall reaction rate in the shell.

[0017] Optionally, the control mechanism includes a guide block fixedly connected to the inner side wall of the rotating ring, a guide groove for the guide block to move up and down is provided on the support ring, the bottom of the guide groove and the guide block are connected by a reset spring, a liquid inlet groove is provided on the side wall of the support ring corresponding to the liquid inlet, a plurality of spiral sheets are fixedly connected to the inner side wall of the support ring, and the spiral sheets rotate downward, wherein, when the reset spring is not stretched, the bottom wall of the liquid inlet groove is higher than the bottom wall of the liquid inlet.

[0018] By adopting the above technical solution, when gas is input into the shell, the gas flow can drive the spiral plate, the support ring and the rotating ring to rotate synchronously. At the same time, the gas flow pushes the spiral plate and the support ring to move downward and stretches the reset spring, so that the support ring moves downward. As the flow rate of the gas increases, the downward movement height of the support ring and the liquid inlet groove increases, and the amount of liquid entering the reaction tube increases.

[0019] By setting the spiral blades, the gas can push the support ring to move downward when flowing, and the downward movement distance can be adjusted according to the gas flow rate. The structure is simple and is conducive to improving energy utilization.

[0020] Optionally, a drainage mechanism is provided in the shell, and the drainage mechanism is used to control the height of the material in the shell; the drainage mechanism includes a drainage cylinder vertically arranged in the shell, the top of the drainage cylinder is sealed and passes through a second partition, a drainage hole is opened on the top side wall of the drainage cylinder, and a baffle is provided in the shell above the rotating ring and the drainage cylinder, and an air inlet hole is opened on the baffle corresponding to the rotating ring.

[0021] By adopting the above technical solution, the arrangement of the drain cylinder and the drain hole enables the liquid in the shell to be discharged after reaching a certain height, thereby reducing the risk of materials entering the reaction tube from above the rotating ring when the rotating ring is restricted by the conical flexible sheet and cannot move upward, which is beneficial to ensuring the normal progress of the reaction; and the arrangement of the baffle and the air inlet hole can reduce the impact of the gas on the liquid surface, thereby ensuring the stability of the liquid inlet.

[0022] Optionally, a third partition is provided in the shell below the first partition, the lower ends of the liquid discharge cylinder and the reaction tube pass through the third partition, and the liquid inlet pipe and the liquid outlet pipe are connected to the side wall of the shell between the first partition and the third partition.

[0023] By adopting the above technical solution, when the sulfonation reaction is carried out, the cooling liquid enters from the liquid inlet pipe and flows out from the liquid outlet pipe, so that the reaction tube can be cooled conveniently.

[0024] Optionally, a connecting pipe is fixedly connected to the lower end of the drain cylinder and the reaction tube in the shell, a fourth partition is fixedly connected in the shell, and the outer wall of the connecting pipe is fixedly connected to the fourth partition, a discharge pipe is connected to the bottom of the shell, a vent is provided on the fourth partition, and the shell is connected to an exhaust pipe above the fourth partition.

[0025] By adopting the above technical solution, after the material and gas flow out of the reaction tube, the material and liquid enter the bottom of the shell through the connecting pipe, the material flows out of the shell through the discharge pipe, and the gas enters above the fourth partition through the vent hole and flows out of the shell through the exhaust pipe.

[0026] In summary, compared with the prior art, the present application includes at least one of the following beneficial technical effects:

[0027] 1. Through the arrangement of the floating ring, the rotating ring and the conical flexible sheet, when the material is input into the shell, under the action of buoyancy and its own gravity, each rotating ring can always maintain the same stable distance from the liquid surface, thereby improving the uniformity of the material entering each reaction tube and reducing the risk of overheating of the local reaction tube. The rotation of the rotating ring can facilitate the material to enter the reaction tube evenly from all angles, which is beneficial to improving the uniformity of the membrane. At the same time, the overflow feeding method can reduce the obstruction of the gas, facilitate the contact between the gas and the membrane, and help improve the reaction effect and efficiency of the sulfonation reaction.

[0028] 2. By setting the control mechanism, when the gas flow rate increases, the support ring can move downward with the increase of the gas flow rate, thereby increasing the amount of material entering the reaction tube with the increase of the gas flow rate. On the one hand, it can improve the conversion rate of the reaction and the output of the product. On the other hand, it can reduce the occurrence of over-sulfonation, which is beneficial to improve the reaction effect of the sulfonation reaction. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the structure of an embodiment of the present application;

[0030] Figure 2 This is a schematic diagram of the structure inside the housing in the embodiment of the present application;

[0031] Figure 3 This is a schematic diagram of the structure of the rotating ring in the embodiment of the present application;

[0032] Figure 4 For the embodiment of this application Figure 2 A partial enlarged view of the middle area A;

[0033] Figure 5 For the embodiment of this application Figure 2 A partial enlarged view of the middle area B;

[0034] Figure 6It is a schematic diagram of the structure of the guide groove and the guide block in the embodiment of the present application.

[0035] Explanation of the reference numerals: 1. Shell; 11. Liquid inlet pipe; 12. Liquid outlet pipe; 13. Feed pipe; 14. Second partition plate; 141. Overflow hole; 15. Annular plate; 151. Flow hole; 16. Third partition plate; 17. Connecting pipe; 18. Discharge pipe; 19. Exhaust pipe; 2. Reaction tube; 21. Conical flexible sheet; 22. Floating ring; 3. First partition plate; 4. Rotating ring; 41. Liquid inlet; 5. Air inlet mechanism; 51. Air inlet pipe; 52. Air outlet pipe; 53. Guide plate; 6. Support ring; 61. Guide groove; 62. Liquid inlet groove; 7. Control mechanism; 71. Guide block; 72. Spiral sheet; 8. Discharge mechanism; 81. Discharge cylinder; 811. Discharge hole; 82. Baffle; 821. Air inlet; 9. Fourth partition plate; 91. Vent hole. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the following will be combined with the embodiments of the present application. Figure 1-Figure 6 , the technical scheme of the embodiment of the present application is clearly and completely described. Obviously, the described embodiment is a part of the embodiment of the present application, not all of the embodiments. Based on the described embodiment of the present application, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of this application.

[0037] Reference Figures 1 to 5 A sulfonation reaction device includes a shell 1, a reaction tube 2, a liquid inlet pipe 11, a liquid outlet pipe 12, a feed pipe 13, a first baffle 3, a conical flexible sheet 21, a floating ring 22, a rotating ring 4, a liquid inlet 41, an air intake mechanism 5, a support ring 6 and a control mechanism 7.

[0038] Among them, refer to Figure 1 and Figure 3 The shell 1 is vertically arranged on a horizontal plane, and a plurality of reaction tubes 2 are arranged, and the plurality of reaction tubes 2 are vertically arranged in the shell 1; the liquid inlet pipe 11, the liquid outlet pipe 12 and the feed pipe 13 are all connected to the shell 1, the liquid inlet pipe 11 is used to input the coolant into the shell 1, the liquid outlet pipe 12 is used to supply the coolant to flow out of the shell 1, and the feed pipe 13 is used to supply the material into the shell 1;

[0039] Among them, refer to Figure 2 , Figure 3 and Figure 5, the first partition 3 is horizontally fixedly connected in the shell 1, the feed pipe 13 is located above the first partition 3, the liquid inlet pipe 11 and the liquid outlet pipe 12 are both located below the first partition 3, and multiple reaction tubes 2 pass through the first partition 3 and are fixedly connected to the first partition 3, the same number of conical flexible sheets 21 are provided corresponding to the reaction tubes 2, and each conical flexible sheet 21 is connected to the upper end of a reaction tube 2, the elastic force of the conical flexible sheet 21 can be ignored, and the conical flexible sheet 21 can be stretched; each floating ring 22 is fixedly sleeved on the upper end of a conical flexible sheet 21, each rotating ring 4 is rotatably connected to a floating ring 22, and the liquid inlet 41 is opened on the side wall of the rotating ring 4;

[0040] Among them, refer to Figures 2 to 5 The air intake mechanism 5 is arranged above the shell 1, and the air intake mechanism 5 is used to input gas into the reaction tube 2. The support ring 6 is slidably connected in the rotating ring 4, and the support ring 6 can block the liquid inlet 41. The control mechanism 7 is arranged on the support ring 6, and the control mechanism 7 is used to move the support ring 6 downward when the gas flow rate increases. When the gravity and buoyancy of the conical flexible sheet 21, the floating ring 22, the rotating ring 4, the support ring 6 and the control mechanism 7 are balanced, the liquid level is higher than the liquid inlet 41 and can pass through the support ring 6.

[0041] Reference Figure 2 The air intake mechanism 5 includes an air intake pipe 51, an air outlet pipe 52 and a guide plate 53. The air intake pipe 51 is connected to the top of the housing 1, and the air outlet pipes 52 are spirally distributed and provided in plurality, and the plurality of air outlet pipes 52 are rotatably connected to the bottom of the air intake pipe 51, and the guide plate 53 is distributed in a cross shape and is fixedly connected in the housing 1 and located below the air outlet pipes 52.

[0042] When air intake is required, the gas enters the air outlet pipe 52 from the air inlet pipe 51 and pushes the air outlet pipe 52 , and the air outlet pipe 52 rotates and outputs the gas. The output gas diffuses at the top of the shell 1 , and then the gas moves downward into the reaction tube 2 under the guidance of the guide plate 53 .

[0043] By setting the outlet pipe 52 and the guide plate 53, the gas can be quickly dispersed and fill the top of the shell 1, reducing the risk of more gas intake into the reaction tube 2 facing the inlet pipe 51, which is beneficial to improving the uniformity of the amount of gas entering each reaction tube 2, reducing the risk of local overheating, and helping to improve the overall reaction rate in the shell 1.

[0044] Reference Figure 5 and Figure 6The control mechanism 7 includes a guide block 71, a guide groove 61, a return spring, a liquid inlet groove 62 and a spiral piece 72. The guide block 71 is fixedly connected to the circumferential side wall of the rotating ring 4 and is provided in plurality. The guide groove 61 corresponds to the guide block 71 and is opened on the support ring 6 and can allow the guide block 71 to move up and down. The return springs are provided in the same number corresponding to the guide blocks 71. Each return spring is provided between the bottom wall of a guide groove 61 and a guide block 71. The liquid inlet groove 62 corresponds to the liquid inlet 41 and is opened on the support ring 6. The spiral piece 72 is rotated downward and is provided in plurality. The plurality of spiral pieces 72 are fixedly connected to the inner side wall of the support ring 6 and are distributed in an array. When the return spring is not stretched, the bottom wall of the liquid inlet groove 62 is higher than the bottom wall of the liquid inlet 41, and the bottom wall of the liquid inlet groove 62 is lower than the top wall of the liquid inlet 41.

[0045] When gas is input into the shell 1, the gas flow can drive the spiral piece 72, the support ring 6 and the rotating ring 4 to rotate. At the same time, the gas flow pushes the spiral piece 72 and the support ring 6 to move downward and stretches the reset spring, so that the support ring 6 moves downward. As the flow rate of the gas increases, the downward movement height of the support ring 6 and the liquid inlet groove 62 increases, and the amount of liquid entering the reaction tube 2 increases.

[0046] By setting the spiral sheet 72, the gas can push the support ring 6 to move downward when flowing, and the downward movement distance can be adjusted according to the gas flow rate. The structure is simple and is conducive to improving energy utilization.

[0047] Reference Figure 2 and Figure 4 A sulfonation reaction device further includes a second partition 14 and an overflow hole 141. The second partition 14 is horizontally arranged in the shell 1 and is located above the first partition 3. The feed pipe 13 is arranged below the second partition 14. The plurality of reaction tubes 2 all pass through the second partition 14 and are fixedly connected to the second partition 14. The overflow hole 141 is opened on the second partition 14 and is opened in plurality.

[0048] By setting the second partition 14 and the overflow hole 141, when the material increases in the shell 1, the material first contacts the second partition 14 and then enters the top of the second partition 14 through the overflow hole 141, thereby reducing the impact of material input on the liquid level, facilitating the maintenance of the liquid level, and reducing the obstruction of the material by the second partition 14 to reduce the impact force of the material, thereby facilitating the material to enter the reaction tube 2 evenly.

[0049] Reference Figure 2 A sulfonation reaction device further includes an annular plate 15 and flow holes 151. The annular plate 15 is coaxially arranged vertically in the shell 1 and is located between the first partition plate 3 and the second partition plate 14. The flow holes 151 are arranged in an array on the annular plate 15, and the lower end of the flow holes 151 is higher than the first partition plate 3.

[0050] By setting the annular plate 15, the material entering the shell 1 from the feed pipe 13 is first gathered in the area between the shell 1 and the annular plate 15, and then the gathered liquid enters the area between the first partition plate 3 and the second partition plate 14 through the flow hole 151, which facilitates the uniform diffusion of the material between the first partition plate 3 and the second partition plate 14, reduces the impact force of the material, and is conducive to ensuring the uniformity of the material entering the reaction tube 2.

[0051] Reference Figure 2 A sulfonation reaction device further includes a liquid discharge mechanism 8. The liquid discharge mechanism 8 is arranged in the shell 1, and the liquid discharge mechanism 8 is used to control the height of the material in the shell 1.

[0052] Reference Figure 2 and Figure 4 The liquid discharge mechanism 8 includes a liquid discharge cylinder 81, a liquid discharge hole 811, a baffle 82 and an air inlet 821. The liquid discharge cylinder 81 is vertically arranged in the housing 1, the top of the liquid discharge cylinder 81 is sealed and passes through the second partition 14, the liquid discharge hole 811 is opened on the top side wall of the liquid discharge cylinder 81, the bottom height of the liquid discharge hole 811 is higher than the bottom height of the liquid inlet 41 when the conical flexible sheet 21 is not stretched, the baffle 82 is horizontally arranged in the housing 1, the baffle 82 is located above the rotating ring 4 and the liquid discharge cylinder 81, and the air inlet 821 is opened on the baffle 82 and the same number of air inlet holes 821 are opened directly opposite to the liquid discharge holes 811.

[0053] By setting the drain cylinder 81 and the drain hole 811, the liquid in the shell 1 can be discharged after reaching a certain height, reducing the risk of materials entering the reaction tube 2 from above the rotating ring 4 when the rotating ring 4 is restricted by the conical flexible sheet 21 and cannot move upward, which is beneficial to ensuring the normal progress of the reaction. The setting of the baffle 82 and the air inlet 821 can reduce the impact of the gas on the liquid surface and ensure the stability of the liquid inlet.

[0054] Reference Figure 1 and Figure 2 A sulfonation reaction device further includes a third partition plate 16, a connecting pipe 17, a fourth partition plate 9, a discharge pipe 18, a vent hole 91 and an exhaust pipe 19. The third partition plate 16 is arranged in the shell 1 and is located below the first partition plate 3 in the shell 1. The lower ends of the discharge cylinder 81 and the reaction tube 2 pass through the third partition plate 16. The liquid inlet pipe 11 and the liquid outlet pipe 12 are both connected to the shell 1 located between the first partition plate 3 and the third partition plate 16. When the sulfonation reaction is carried out, the coolant enters from the liquid inlet pipe 11 and flows out from the liquid outlet pipe 12, so that the reaction tube 2 can be cooled conveniently.

[0055] Reference Figure 2The connecting pipe 17 is fixedly connected in the shell 1 and is located at the lower end of the drain cylinder 81 and the reaction tube 2. The fourth partition plate 9 is fixedly connected in the shell 1 and is fixedly connected to the outer wall of the connecting pipe 17. The discharge pipe 18 is connected to the bottom of the shell 1. The vent hole 91 is opened on the fourth partition plate 9. The area between the connecting pipe 17, the fourth partition plate 9 and the shell 1 is the air outlet bin. The exhaust pipe 19 is connected to the shell 1 and is connected to the air outlet bin.

[0056] After the material and gas flow out of the reaction tube 2 , the material and liquid enter the bottom of the shell 1 through the connecting pipe 17 , the material flows out of the shell 1 through the discharge pipe 18 , and the gas enters above the fourth partition plate 9 through the vent hole 91 and flows out of the shell 1 through the exhaust pipe 19 .

[0057] When a sulfonation reaction is required, the material first enters the shell 1 from the feed pipe 13 and falls on the first partition 3. Then the material gradually increases in the shell 1, and the material submerges the floating ring 22 and part of the rotating ring 4. At this time, the buoyancy and gravity are balanced, and the material enters the reaction tube 2 through the gap between the liquid inlet 41 and the support ring 6 and forms a film. The air intake mechanism 5 inputs gas into the reaction tube 2, and the gas reacts with the membrane in the reaction tube 2. When the gas flow rate increases, the control mechanism 7 controls the support ring 6 to move downward, the gap between the liquid inlet 41 and the support ring 6 increases, and the amount of liquid entering the reaction tube 2 increases.

[0058] By setting the floating ring 22, the rotating ring 4 and the conical flexible sheet 21, when the material is input into the shell 1, under the action of buoyancy and its own gravity, each rotating ring 4 can always maintain the same stable distance from the liquid surface, thereby improving the uniformity of the material entering each reaction tube 2 and reducing the risk of overheating of the local reaction tube 2. The rotation of the rotating ring 4 can facilitate the material to enter the reaction tube 2 evenly from all angles, which is beneficial to improving the uniformity of the membrane. At the same time, the overflow feeding method can reduce the obstruction of the gas, facilitate the contact between the gas and the membrane, and help improve the reaction effect and efficiency of the sulfonation reaction.

[0059] By setting the control mechanism 7, when the gas flow rate increases, the support ring 6 can move downward with the increase of the gas flow rate, so that the amount of material entering the reaction tube 2 can be increased with the increase of the gas flow rate. On the one hand, it can improve the conversion rate of the reaction and the output of the product. On the other hand, it can reduce the occurrence of over-sulfonation, which is beneficial to improve the reaction effect of the sulfonation reaction.

[0060] The implementation principle of a sulfonation reaction device in the embodiment of the present application is:

[0061] When a sulfonation reaction is required, the material first enters the shell 1 through the feed pipe 13, and the material gathers between the shell 1, the annular plate 15 and the first partition 3. Then the material enters the area between the first partition 3 and the second partition 14 through the flow hole 151 and then enters the top of the second partition 14 through the overflow hole 141. After that, the material continues to increase, and the buoyancy is equal to the sum of the gravity of the floating ring 22, the rotating ring 4, the support ring 6 and the spiral sheet 72. At this time, the material enters the reaction tube 2 through the liquid inlet 41 and the liquid inlet tank 62 and forms a membrane.

[0062] After the material forms a film in the reaction tube 2, the gas enters the outlet pipe 52 through the inlet pipe 51 and pushes the outlet pipe 52. The outlet pipe 52 rotates to discharge the gas, and the gas is dispersed at the top of the shell 1. Then the gas flows downward through the guide plate 53 and enters the support ring 6 through the inlet hole 821. The gas pushes the spiral piece 72 to move downward. The downward movement of the spiral piece 72 drives the support ring 6 to move downward and stretches the reset spring. The downward movement of the support ring 6 causes the liquid inlet groove 62 to move downward. At the same time, the downward flow of the gas will drive the spiral piece 72, the support ring 6 and the rotating ring 4 to rotate synchronously, and the material enters the reaction tube 2 evenly through the liquid inlet 41 and the liquid inlet groove 62.

[0063] When the gas flow rate increases, the gas enters the support ring 6 and continues to push the spiral piece 72 downward. The downward movement of the spiral piece 72 continues to drive the support ring 6 downward and causes the return spring to continue to be stretched. The downward movement of the support ring 6 causes the liquid inlet groove 62 to move downward, and the amount of liquid inlet increases. When the gas flow rate decreases, the gas enters the support ring 6 and reduces the thrust on the spiral piece 72. Under the action of the restoring force of the return spring, the support ring 6 moves upward and causes the liquid inlet groove 62 to move upward, and the amount of liquid inlet decreases.

[0064] In addition, it should be noted that in the description of this application, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0065] The above is a preferred embodiment of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles described in the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A sulfonation reaction device, comprising a shell, a reaction tube, a liquid inlet pipe, a liquid outlet pipe and a feed pipe, characterized in that: It also includes: a first baffle, a conical flexible sheet, a floating ring, a rotating ring, a liquid inlet, an air intake mechanism, a support ring and a control mechanism; The first baffle is horizontally fixedly connected in the shell, the feed pipe is connected to the side wall of the shell and is located above the first baffle, a plurality of reaction tubes are vertically arranged, the plurality of reaction tubes all pass through the first baffle and are fixedly connected to the first baffle, the same number of conical flexible sheets are arranged corresponding to the reaction tubes, and each conical flexible sheet is connected to the upper end of a reaction tube, each floating ring is sleeved on a conical flexible sheet, each rotating ring is rotatably connected to the floating ring, and the liquid inlet is opened on the side wall of the rotating ring; The air intake mechanism is arranged above the shell, and is used to transport gas into the reaction tube. The support ring is slidably connected in the rotating ring, and the support ring can block the liquid inlet. The control mechanism is arranged on the support ring, and is used to move the support ring downward when the gas flow rate increases. The control mechanism includes a guide block fixedly connected to the inner side wall of the rotating ring, a guide groove for the guide block to move up and down is provided on the support ring, the bottom of the guide groove and the guide block are connected by a reset spring, a liquid inlet groove is provided on the side wall of the support ring corresponding to the liquid inlet, a plurality of spiral sheets are fixedly connected to the inner side wall of the support ring, and the spiral sheets rotate downward, wherein, when the reset spring is not stretched, the bottom wall of the liquid inlet groove is higher than the bottom wall of the liquid inlet; a second partition is horizontally arranged above the first partition in the shell, the feed pipe is located below the second partition, a plurality of reaction tubes all pass through the second partition and are fixedly connected to the second partition, and an overflow hole is provided on the second partition.

2. A sulfonation reaction device according to claim 1, characterized in that: An annular plate is coaxially arranged in the shell, the annular plate is arranged between the first partition plate and the second partition plate, and a plurality of flow holes are arranged in an array on the annular plate.

3. A sulfonation reaction device according to claim 1, characterized in that: The air intake mechanism comprises an air intake pipe connected to the top of the shell, the bottom of the air intake pipe is rotatably connected to a plurality of spirally distributed air outlet pipes, and a guide plate distributed in a cross shape is fixedly connected to the shell below the air outlet pipes.

4. A sulfonation reaction device according to claim 1, characterized in that: A drainage mechanism is arranged in the shell, and the drainage mechanism is used to control the height of the material in the shell; the drainage mechanism includes a drainage cylinder vertically arranged in the shell, the top of the drainage cylinder is sealed and passes through the second partition plate, a drainage hole is opened on the top side wall of the drainage cylinder, and a baffle is arranged above the rotating ring and the drainage cylinder in the shell, and an air inlet hole is opened on the baffle corresponding to the rotating ring.

5. A sulfonation reaction device according to claim 4, characterized in that: A third partition is arranged below the first partition in the shell, the lower ends of the liquid discharge cylinder and the reaction tube pass through the third partition, and the liquid inlet pipe and the liquid outlet pipe are connected to the shell side wall between the first partition and the third partition.

6. A sulfonation reaction device according to claim 5, characterized in that: A connecting pipe is fixedly connected at the lower end of the drain cylinder and the reaction tube in the shell, a fourth partition is fixedly connected in the shell, and the outer wall of the connecting pipe is fixedly connected to the fourth partition, a discharge pipe is connected to the bottom of the shell, a vent is provided on the fourth partition, and an exhaust pipe is connected to the shell above the fourth partition.

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