A multitubular membrane type sulfonation reactor

Abstract

The utility model discloses a multi -tube formula membrane formula sulfonation reactor relates to membrane formula sulfonation reactor technical field, including reaction cylinder, sulfur trioxide inlet bin, discharge bin and annular shunt pipe. The utility model discloses a multi -tube formula membrane formula sulfonation reactor makes the gas be cut into micro -scale vortex by the rotation of turbine, and then the high concentration sulfur trioxide gathered in the pipeline center is thrown to the periphery, prevents sulfur trioxide uneven distribution, leads to the inside reaction cylinder to appear center area reaction violent, the condition of edge area reaction is not complete, and then guarantee the homogeneity of gas distribution, through the cooperation of one shunt seat, two shunt seat and support disc, increase the contact time of liquid film and sulfur trioxide gas, and when liquid film passes one shunt seat, two shunt seat and support disc, will make liquid film complete once surface renewal breaks mass transfer boundary layer to improve conversion efficiency.

Description

Technical Field

[0001] This utility model relates to the field of membrane sulfonation reactor technology, specifically a multi-tube membrane sulfonation reactor. Background Technology

[0002] A membrane sulfonation reactor is a continuous device that utilizes thin-film liquid technology to achieve efficient reaction between gaseous sulfur trioxide and liquid organic matter at the gas-liquid interface. By forcing the organic material to form a sub-millimeter-scale liquid film on a cooling surface and contacting it with directionally flowing sulfur trioxide gas, instantaneous removal of reaction heat and precise suppression of side reactions are achieved. The multi-tube membrane sulfonation reactor is a type of membrane sulfonation reactor, and it is a highly efficient, precise sulfonation reaction device suitable for large-scale continuous production.

[0003] Patent application number 201120279734.X discloses a multi-tube membrane sulfonator. A flow meter is installed outside each reaction tube to regulate the flow rate of the organic material, which then directly enters the reaction tube. Each reaction tube contains a film-forming sleeve. This structure facilitates control of the flow rate and film thickness of the organic material in each reaction tube, improving the quality of the product produced by the sulfonation reactor. An inlet sleeve and a protective air structure can also be added to the reaction tube, providing an airflow barrier when sulfur trioxide gas initially contacts the organic raw material. This technical solution solves the problem of existing reactors where sulfur trioxide gas and organic material directly contact and react violently after passing through the gasket regulator, easily leading to over-sulfonation.

[0004] While the above comparative documents can prevent the sulfonation reaction from being too vigorous, the sulfur trioxide gas enters the reactor through the upper end cap without being diverted, resulting in uneven distribution of the sulfur trioxide gas. This can lead to a situation where the central area reacts violently while the peripheral area reacts incompletely, thus affecting the reaction efficiency. Utility Model Content

[0005] The purpose of this invention is to provide a multi-tube membrane sulfonation reactor to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a multi-tube membrane sulfonation reactor, comprising a reaction cylinder, a sulfur trioxide inlet chamber, a discharge chamber, and an annular diversion pipe. The sulfur trioxide inlet chamber is installed at the top of the outer wall of the reaction cylinder, and the discharge chamber is fixedly connected to the bottom of the outer wall of the reaction cylinder. An annular diversion pipe is installed in the middle of the outer wall of the reaction cylinder, and a feed pipe is connected to one side of the outer wall of the annular diversion pipe. A gas-liquid separator is connected to the bottom of the reaction cylinder through a conveying pipe, and a cyclone separator is connected to the top of the gas-liquid separator through a transmission pipe. A discharge filter is connected to the bottom of the gas-liquid separator through an output pipe. The bottom output end of the cyclone separator is connected to an output pipe. A turbine is installed in the center of the sulfur trioxide inlet chamber, and a rotating column is fixedly connected to the middle of the bottom end of the turbine.

[0007] Sulfur trioxide enters the reaction cylinder through the sulfur trioxide inlet chamber. At this time, the sulfur trioxide impacts the turbine, causing the turbine to rotate. Then, the rotation of the turbine causes the gas to be cut into micro-scale vortices by the blades, which in turn throws the high concentration of sulfur trioxide accumulated in the center of the pipe to the outer periphery, preventing uneven distribution of sulfur trioxide and thus ensuring the homogeneity of gas distribution.

[0008] Preferably, both the sulfur trioxide inlet chamber and the outlet chamber are conical, the annular diverter pipe is connected to the reaction cylinder through an outlet with an equal angle, and an exhaust pipe is installed in the middle of the outer wall of the sulfur trioxide inlet chamber.

[0009] Preferably, the outer wall of the rotating column is connected to the upper and lower sides of the support base, and the outer walls of the support base are fixedly connected to the inside of the reaction cylinder. A fixing plate is welded to the top of the inner wall of the reaction cylinder.

[0010] After sulfur trioxide impacts the turbine, causing it to rotate, the turbine rotation will drive the rotating column to rotate as well. At this time, the support will guide the rotating column to rotate smoothly.

[0011] Preferably, the inner wall of the fixed plate is connected to a No. 1 diverter seat, and the No. 1 diverter seat has a conical structure that is larger at the top and smaller at the bottom, and a movable cavity is opened in the middle of the bottom end of the No. 1 diverter seat.

[0012] When the liquid film flows along the reaction cylinder, it is blocked by the fixed plate, so that the liquid film then flows along the No. 1 flow divider.

[0013] Preferably, a support plate is provided below the fixed plate, and the outer wall of the support plate is welded to the inner wall of the reaction cylinder. Both the fixed plate and the support plate have an "O" shaped structure.

[0014] Preferably, the support plate has diversion holes with equal included angles inside, and a second diversion seat is fixedly connected to the inner wall of the support plate. The second diversion seat has a conical structure that is smaller at the top and larger at the bottom.

[0015] The liquid film passes through the No. 2 diversion seat or reaches the support plate. At this time, the liquid film passes through the diversion hole and continues to flow along the inner wall of the reaction cylinder.

[0016] Preferably, a diverting seat is fixedly connected to the top of the outer wall of the second diverting seat, and the diverting seat has a conical structure that is smaller at the top and larger at the bottom. Both the second diverting seat and the diverting seat have through holes corresponding to the rotating column inside.

[0017] The diversion seat allows the liquid film to reach the second diversion seat. Since the first diversion seat is a cone shape that is larger at the top and smaller at the bottom, and the second diversion seat is a cone shape that is smaller at the top and larger at the bottom, and there is a certain gap between the first diversion seat, the support plate and the second diversion seat, sulfur trioxide gas can pass through and come into contact with the liquid film on the first diversion seat and the second diversion seat.

[0018] Preferably, a stirring rod is sleeved in the middle of the outer wall of the rotating column, and the stirring rod has a cross-shaped structure and is evenly distributed.

[0019] The rotation of the rotating column will drive the stirring rod to rotate, which will then form a vertical vortex inside the reaction chamber. At this time, the vertical vortex generates a circumferential shear force, reducing the fluctuation of the liquid film thickness.

[0020] As can be seen from the above, the multi-tube membrane sulfonation reactor provided by this utility model has the following beneficial effects.

[0021] 1. The rotation of the turbine causes the gas to be cut into micro-scale vortices by the blades, which in turn throws the high concentration of sulfur trioxide accumulated in the center of the pipe to the outer periphery, preventing uneven distribution of sulfur trioxide and the situation where the reaction is violent in the central area and incomplete in the edge area inside the reaction chamber, thereby ensuring the homogeneity of gas distribution.

[0022] 2. The interaction between the No. 1 and No. 2 diverters and the support plate increases the contact time between the liquid film and the sulfur trioxide gas. As the liquid film passes through the No. 1 and No. 2 diverters and the support plate, it undergoes a surface renewal, breaking the mass transfer boundary layer and thus improving the conversion efficiency. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the process structure of this utility model; Figure 2 This is a three-dimensional structural diagram of the reaction cylinder of this utility model; Figure 3 This is a schematic diagram of the front sectional view of the reaction cylinder of this utility model; Figure 4 This is a top-view three-dimensional structural diagram of the turbine of this utility model; Figure 5 This is a three-dimensional structural diagram of the stirring rod of this utility model; Figure 6This is a schematic diagram of the front view section of the No. 2 diverter seat of this utility model; Figure 7 This is a three-dimensional structural diagram of the No. 1 diverter seat of this utility model; Figure 8 This is a three-dimensional structural diagram of the No. 2 diverter seat of this utility model.

[0024] In the diagram: 1. Reaction cylinder; 2. Sulfur trioxide inlet chamber; 3. Discharge chamber; 4. Annular diverter pipe; 5. Feed pipe; 6. Gas-liquid separator; 7. Cyclone separator; 8. Discharge filter; 9. Turbine; 10. Rotating column; 11. Support base; 12. Fixed plate; 13. Diverter No. 1; 14. Support plate; 15. Diverter hole; 16. Diverter No. 2; 17. Drainage seat; 18. Stirring rod. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figures 1-8 This utility model provides a technical solution: a multi-tube membrane sulfonation reactor, including a reaction cylinder 1, a sulfur trioxide inlet chamber 2, a discharge chamber 3, and an annular diversion pipe 4. The sulfur trioxide inlet chamber 2 is installed at the top of the outer wall of the reaction cylinder 1, and the discharge chamber 3 is fixedly connected to the bottom of the outer wall of the reaction cylinder 1. The annular diversion pipe 4 is installed in the middle of the outer wall of the reaction cylinder 1, and a feed pipe 5 is connected to one side of the outer wall of the annular diversion pipe 4. The bottom of the reaction cylinder 1 is connected to a gas-liquid separator 6 through a conveying pipe, and the top of the gas-liquid separator 6... The end is connected to a cyclone separator 7 via a transmission pipe. The bottom of the gas-liquid separator 6 is connected to a discharge filter 8 via an output pipe. The bottom output end of the cyclone separator 7 is connected to the output pipe. A turbine 9 is set in the center of the inside of the sulfur trioxide inlet chamber 2, and a rotating column 10 is fixedly connected to the middle of the bottom end of the turbine 9. Both the sulfur trioxide inlet chamber 2 and the discharge chamber 3 are conical. The annular diversion pipe 4 is connected to the reaction cylinder 1 through an output port with an equal included angle. An exhaust pipe is installed in the middle of the outer wall of the sulfur trioxide inlet chamber 2.

[0027] In practice, the organic raw materials are first introduced into the annular diversion pipe 4 through the feed pipe 5, and then the organic raw materials are introduced into the reaction cylinder 1 through the annular diversion pipe 4. At this time, the organic raw materials are evenly distributed into the reaction cylinder 1. Then, under the action of gravity, they spread into a continuous thin liquid film along the inner wall of the reaction cylinder 1, and the continuous thin liquid film flows downward stably in a laminar flow state. Then, sulfur trioxide enters the reaction cylinder 1 through the sulfur trioxide inlet chamber 2. At this time, the sulfur trioxide will impact the turbine 9, causing the turbine 9 to rotate.

[0028] Then, the rotation of turbine 9 causes the gas to be cut into micro-scale vortices by the blades, which in turn throws the high concentration of sulfur trioxide accumulated in the center of the pipe to the outer periphery, preventing uneven distribution of sulfur trioxide and the situation where the reaction in the central area of ​​the reaction cylinder 1 is violent and the reaction in the edge area is incomplete, thus ensuring the homogeneity of gas distribution.

[0029] After the diverted sulfur trioxide comes into contact with the organic material, the sulfur trioxide gas molecules diffuse to the surface of the liquid film and undergo a sulfonation reaction with the organic matter at the gas-liquid interface. As the liquid film flows downward, the fresh organic matter is continuously exposed to sulfur trioxide, which gradually deepens the reaction until it reaches the discharge bin 3, where the liquid film has been transformed into a viscous sulfonic acid product. The sulfonic acid product then reaches the gas-liquid separator 6 for gas-liquid separation. The separated gas is then transferred to the cyclone separator 7, where the gas is further separated by centrifugal force. The liquid separated by the gas-liquid separator 6 then enters the discharge filter 8 for filtration and recovery, thus completing the continuous sulfonation reaction of sulfur trioxide.

[0030] See Figures 3-8 The rotating column 10 has support seats 11 connected to its upper and lower outer walls, and the outer walls of the support seats 11 are fixedly connected to the inside of the reaction cylinder 1. A fixed plate 12 is welded to the top of the inner wall of the reaction cylinder 1. A first diversion seat 13 is connected to the inner wall of the fixed plate 12, and the first diversion seat 13 has a conical structure that is larger at the top and smaller at the bottom. A movable cavity is opened in the middle of the bottom end of the first diversion seat 13. A support plate 14 is set below the fixed plate 12, and the outer wall of the support plate 14 is welded to the inner wall of the reaction cylinder 1. Both the fixed plate 12 and the support plate 14 have an "O" shaped structure. The support plate 14 has a flow-dividing hole 15 with equal included angle, and a second flow-dividing seat 16 is fixedly connected to the inner wall of the support plate 14. The second flow-dividing seat 16 has a conical structure with a smaller upper part and a larger lower part. A flow-guiding seat 17 is fixedly connected to the top of the outer wall of the second flow-dividing seat 16. The flow-guiding seat 17 also has a conical structure with a smaller upper part and a larger lower part. Both the second flow-dividing seat 16 and the flow-guiding seat 17 have through holes corresponding to the rotating column 10. A stirring rod 18 is sleeved in the middle of the outer wall of the rotating column 10. The stirring rod 18 has a "+" shaped structure and is evenly distributed.

[0031] In practice, after sulfur trioxide impacts the turbine 9 and causes it to rotate, the rotation of the turbine 9 will drive the rotating column 10 to rotate together. At this time, the support seat 11 will guide the rotating column 10 to rotate smoothly. Then, the rotation of the rotating column 10 will drive the stirring rod 18 to rotate, thereby forming a vertical vortex inside the reaction cylinder 1. At this time, the vertical vortex generates circumferential shear force to reduce the fluctuation of the liquid film thickness.

[0032] See Figures 6-8 When the liquid film flows along the reaction cylinder 1, it is blocked by the fixed plate 12, causing the liquid film to flow along the first diversion seat 13. Then, as the liquid film continues to flow downwards through the first diversion seat 13, it reaches the second diversion seat 16 through the guide seat 17. Once the liquid film passes through the second diversion seat 16 or reaches the support plate 14, it passes through the diversion hole 15 and continues to flow along the inner wall of the reaction cylinder 1. Because the first diversion seat 13 is a cone shape with a larger upper part and a smaller lower part, the second diversion seat... The seat 16 is a cone shape with a smaller top and a larger bottom. There is a certain gap between the first diversion seat 13, the support plate 14 and the second diversion seat 16, which allows sulfur trioxide gas to pass through and come into contact with the liquid film on the first diversion seat 13 and the second diversion seat 16. This increases the contact time between the liquid film and the sulfur trioxide gas. When the liquid film passes through the first diversion seat 13, the second diversion seat 16 and the support plate 14, it will complete a surface renewal of the liquid film and break the mass transfer boundary layer, thereby improving the conversion efficiency.

[0033] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. The substitutions may be replacements of some structures, devices, or method steps, or they may be complete technical solutions. Equivalent substitutions or modifications made based on the technical solution and inventive concept of this utility model should all be covered within the protection scope of this utility model.

Claims

1. A multi-tube membrane sulfonation reactor, comprising a reaction cylinder (1), a sulfur trioxide inlet chamber (2), a discharge chamber (3), and an annular diversion pipe (4), wherein the sulfur trioxide inlet chamber (2) is installed at the top of the outer wall of the reaction cylinder (1), and the discharge chamber (3) is fixedly connected to the bottom of the outer wall of the reaction cylinder (1), and the annular diversion pipe (4) is installed in the middle of the outer wall of the reaction cylinder (1), characterized in that: The annular diverter (4) is connected to a feed pipe (5) on one side of its outer wall. The bottom of the reaction cylinder (1) is connected to a gas-liquid separator (6) through a conveying pipe. The top of the gas-liquid separator (6) is connected to a cyclone separator (7) through a transmission pipe. The bottom of the gas-liquid separator (6) is connected to a discharge filter (8) through an output pipe. The bottom output end of the cyclone separator (7) is connected to an output pipe. A turbine (9) is set in the center of the sulfur trioxide inlet chamber (2). A rotating column (10) is fixedly connected to the middle of the bottom end of the turbine (9). A fixed plate (12) is welded to the top of the inner wall of the reaction cylinder (1). The inner wall of the fixed plate (12) is connected to a No. 1 diverter seat (13), and the No. 1 diverter seat (13) has a conical structure that is larger at the top and smaller at the bottom. A movable cavity is opened in the middle of the bottom end of the No. 1 diverter seat (13).

2. The multi-tube membrane sulfonation reactor according to claim 1, characterized in that: Both the sulfur trioxide inlet chamber (2) and the outlet chamber (3) are conical. The annular diversion pipe (4) is connected to the reaction cylinder (1) through an outlet with an equal angle. An exhaust pipe is installed in the middle of the outer wall of the sulfur trioxide inlet chamber (2).

3. The multi-tube membrane sulfonation reactor according to claim 2, characterized in that: The rotating column (10) has support seats (11) connected to the upper and lower sides of its outer wall, and the two sides of the outer wall of the support seats (11) are fixedly connected to the inside of the reaction cylinder (1).

4. The multi-tube membrane sulfonation reactor according to claim 3, characterized in that: A support plate (14) is provided below the fixed plate (12), and the outer wall of the support plate (14) is welded to the inner wall of the reaction cylinder (1). Both the fixed plate (12) and the support plate (14) are "O" shaped structures.

5. The multi-tube membrane sulfonation reactor according to claim 4, characterized in that: The support plate (14) has a diversion hole (15) with equal included angle inside, and a second diversion seat (16) is fixedly connected to the inner wall of the support plate (14). The second diversion seat (16) has a conical structure with a smaller top and a larger bottom.

6. The multi-tube membrane sulfonation reactor according to claim 5, characterized in that: The second diverter (16) is fixedly connected to the top of the outer wall of the diverter (17), and the diverter (17) has a conical structure with a smaller top and a larger bottom. Both the second diverter (16) and the diverter (17) have through holes corresponding to the rotating column (10) inside.

7. The multi-tube membrane sulfonation reactor according to claim 6, characterized in that: A stirring rod (18) is sleeved in the middle of the outer wall of the rotating column (10), and the stirring rod (18) has a cross-shaped structure and is evenly distributed.

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