Straight-chain alkylbenzene production equipment

Abstract

The straight-chain alkylbenzene production equipment comprises a reaction electric heating kettle and a kettle cover, one side of the top of the reaction electric heating kettle is communicated with a first feeding pipe, the other side of the top of the reaction electric heating kettle is communicated with a second feeding pipe, and the bottom of the reaction electric heating kettle is communicated with a discharging pipe; the resistance value of the pressure rheostat can be adjusted according to the liquid level of reaction liquid in the reaction electric heating kettle, so that currents passing through three groups of coil iron cores are different, the magnetic forces of the three coil iron cores are different, and the viscosities and the flowability of magnetorheological fluid in three rotating boxes are different; the stirring strength of the stirring rod also presents a trend of increasing from top to bottom, unnecessary energy consumption caused by excessive stirring of the materials can be avoided, sufficient mixing of the materials is ensured, through the differential rotating speed setting, optimization of the stirring effect is achieved, unnecessary consumption of part of stirring energy is remarkably reduced, and the stirring efficiency is improved. The operation load of the driving motor is reduced, and the service life of the driving motor is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of linear alkylbenzene production, in particular to linear alkylbenzene production equipment. Background Art

[0002] Linear alkylbenzene is an extremely important chemical raw material, which plays a pivotal role in many industrial fields. As a key component of surfactants, linear alkylbenzene can effectively reduce the surface tension of water and enhance the wetting, penetration, dispersion and emulsification capabilities of the solution, thereby greatly broadening its application range in daily chemical products. Linear alkylbenzene also has certain biodegradability and environmental friendliness. With its biodegradable characteristics, linear alkylbenzene not only helps to reduce environmental pollution, but also conforms to the concept of sustainable development.

[0003] Traditional linear alkylbenzene production equipment mainly uses a single stirring rod for stirring. The stirring efficiency of a single stirring rod is low, especially in the middle and bottom areas of the reactor. The stirring is uneven, resulting in slow reaction speed and reduced yield. The uneven stirring leads to insufficient contact between the reactants and uneven distribution of the reaction temperature, which ultimately causes unstable product quality and makes it difficult to achieve the expected target product qualification rate. The stirring rod is subject to different resistances at different liquid levels. When the stirring rod is used to stir deep liquids, the resistance increases, requiring a higher power motor, resulting in increased energy consumption. Summary of the invention

[0004] The object of the present invention is to provide a linear alkylbenzene production device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical scheme: a linear alkylbenzene production equipment, comprising a reaction electric heating kettle and a kettle cover, one side of the top of the reaction electric heating kettle is connected to a feed pipe 1, the other side of the top of the reaction electric heating kettle is connected to a feed pipe 2, the bottom of the reaction electric heating kettle is connected to a discharge pipe, a stirring rod is rotatably installed inside the kettle cover, three rotating boxes are sleeved and installed on the outer side of the stirring rod, the interiors of the three rotating boxes are all filled with magnetorheological fluid, stirring blades are fixedly installed on the outer side of the three rotating boxes, three groups of inner rotating rods are fixedly installed on the outer side of the stirring rod, three groups of coil cores are fixedly installed on the outer side of the stirring rod, three pressure resistors are fixedly installed inside the stirring rod, a driving motor is fixedly installed on the top of the kettle cover, a driving wheel is fixedly installed on the output end of the driving motor, a transmission belt is sleeved and installed on the outer side of the driving wheel, a driven wheel is fixedly installed on the outer side of the stirring rod, and one end of the transmission belt away from the driving wheel is sleeved and installed on the outer side of the driven wheel.

[0006] Preferably, the three groups of inner rotating rods are respectively located on the inner sides of the three rotating boxes, the three groups of coil cores are respectively located on the inner sides of the three rotating boxes, and the coil cores and the inner rotating rods are staggered, and the three pressure resistors are respectively connected in series with the three groups of coil cores in the same circuit.

[0007] Preferably, a supporting arc plate is fixedly installed on the top of the kettle cover, and a power connection box is fixedly installed on the top of the supporting arc plate. The power connection box is located directly above the stirring rod, and the stirring rod is electrically connected to three pressure resistors and three sets of coil cores through wires.

[0008] Preferably, three groups of limiting rings are fixedly installed on the outer side of the stirring rod, and the three rotating boxes are respectively installed on the inner sides of the three groups of limiting rings in a sealing and rotatable manner, and the stirring blades fixedly connected to the outer sides of two of the rotating boxes are fixedly installed with simulated fish bait stirring blocks at one end away from the rotating box.

[0009] Preferably, a transmission gear ring is fixedly installed on the end of the stirring blade fixedly connected to the outside of one of the rotating boxes away from the rotating box, four connecting arc plates are fixedly installed on the bottom of the kettle cover, a fixed cylinder is fixedly installed on the bottom of the four connecting arc plates, a rotating cylinder is rotatably installed on the bottom of the fixed cylinder, a driven gear ring is fixedly installed on the outside of the rotating cylinder, and the outer side of the driven gear ring is meshed with the outer side of the transmission gear ring.

[0010] Preferably, a liquid inlet hole is opened at the bottom of the rotating cylinder, four connecting rods are fixedly installed on the bottom of the kettle cover, and spiral lifting rods are fixedly installed at one end of the four connecting rods away from the kettle cover. The four spiral lifting rods are respectively located on the inner sides of four rotating cylinders.

[0011] Preferably, a guide plate is fixedly mounted on one side of the top of the fixed tube, and the height of the guide plate at one end away from the fixed tube is lower than the height of the end where the guide plate is connected to the fixed tube.

[0012] Preferably, a foam collecting frame is fixedly mounted on the outer side of the top of the rotating cylinder, and a plurality of leakage holes with a hole diameter of 1 mm are opened at the bottom of the foam collecting frame.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. The set pressure rheostat can adjust its own resistance according to the liquid level of the reaction liquid inside the reaction electric kettle, so that the current passing through the three sets of coil cores is different, so that the magnetic force of the three coil cores is different, so that the viscosity and fluidity of the magnetorheological fluid inside the three rotating boxes are different, and the stirring intensity of the stirring rod also presents a top-down increasing trend, which can avoid unnecessary energy consumption caused by excessive stirring of the material and ensure the full mixing of the material. Through this differentiated speed setting, not only the optimization of the stirring effect is achieved, but also the unnecessary consumption of some stirring energy is significantly reduced, which not only helps to reduce the operating load of the drive motor but also prolong its service life.

[0014] 2. The stirring blade can drive the simulated fish bait stirring block to rotate when it rotates. When the simulated fish bait stirring block moves in the liquid, it cleverly uses the principles of fluid mechanics to enhance the stirring effect. When the simulated fish bait stirring block swings left and right in the way of fish swimming, it can not only effectively promote the circulation of the surrounding liquid, but also generate eddy currents and shear forces during the swinging process. These dynamic effects can greatly improve the mixing uniformity of the liquid. The left and right swinging of the simulated fish bait stirring block can break the original static or laminar state of the liquid, so that all parts of the liquid can be fully stirred and mixed, with higher stirring efficiency and a wider stirring range. The simulated fish bait stirring block can also continuously change the contact area and angle with the liquid during the movement, thereby further promoting the mixing of the liquid.

[0015] 3. When the stirring blade rotates, it can drive the transmission gear ring to rotate, thereby driving the driven gear ring to rotate, and driving the rotating cylinder to rotate on the outside of the spiral lifting rod. In conjunction with the spiral lifting rod, the liquid at the bottom of the reaction kettle can be lifted to the top of the reaction kettle to prevent the unreacted liquid from depositing at the bottom of the reaction kettle, and fully mix and stir with the liquid on the top, so that each liquid molecule has more opportunities to collide and react with other reactants, thereby ensuring the continuity and uniformity of the reaction process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional appearance structure of the present invention.

[0017] Figure 2 It is a schematic diagram of the three-dimensional structure of the reaction electric heating kettle of the present invention.

[0018] Figure 3 It is a schematic diagram of the local three-dimensional structure of the present invention.

[0019] Figure 4 It is a schematic diagram of the partial appearance structure of the present invention.

[0020] Figure 5 It is a schematic diagram of the three-dimensional structure of the stirring rod of the present invention.

[0021] Figure 6 It is a schematic diagram of a partial cross-sectional structure of the present invention.

[0022] Figure 7 It is a schematic diagram of a partial top view of the three-dimensional structure of the present invention.

[0023] Figure 8 It is a schematic diagram of the partial appearance structure of the present invention.

[0024] Fig. 9 It is a schematic diagram of the three-dimensional structure of the spiral lifting rod of the present invention.

[0025] In the figure: 1. reaction electric heating kettle; 2. kettle cover; 3. feed pipe 1; 4. discharge pipe; 5. power box; 6. driving wheel; 7. transmission belt; 8. driving motor; 9. rotating cylinder; 10. stirring rod; 11. stirring blade; 12. rotating box; 13. liquid inlet hole; 14. foam collecting frame; 15. transmission gear ring; 16. driven gear ring; 17. simulation bait stirring block; 18. supporting arc plate; 19. connecting rod; 20. spiral lifting rod; 21. driven wheel; 22. pressure resistor; 23. limit ring; 24. inner rotating rod; 25. coil core; 26. magnetorheological fluid; 27. guide plate; 28. connecting arc plate; 29. ​​fixed cylinder; 30. feed pipe 2. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] See also Figure 1-Figure 9The present invention provides a technical solution: a linear alkylbenzene production equipment, comprising a reaction electric heating kettle 1 and a kettle cover 2, one side of the top of the reaction electric heating kettle 1 is connected with a feed pipe 1 3, the other side of the top of the reaction electric heating kettle 1 is connected with a feed pipe 2 30, the bottom of the reaction electric heating kettle 1 is connected with a discharge pipe 4, a stirring rod 10 is rotatably installed inside the kettle cover 2, three rotating boxes 12 are sleeved and installed on the outer side of the stirring rod 10, the interior of the three rotating boxes 12 are filled with magnetorheological fluid 26, stirring blades 11 are fixedly installed on the outer side of the three rotating boxes 12, three groups of inner rotating rods 24 are fixedly installed on the outer side of the stirring rod 10, three groups of coil cores 25 are fixedly installed on the outer side of the stirring rod 10, three pressure resistors 22 are fixedly installed inside the stirring rod 10, and a driving motor 8 is fixedly installed on the top of the kettle cover 2. A driving wheel 6 is fixedly installed on the output end of the driving motor 8, a transmission belt 7 is sleeved on the outer side of the driving wheel 6, a driven wheel 21 is fixedly installed on the outer side of the stirring rod 10, and one end of the transmission belt 7 away from the driving wheel 6 is sleeved on the outer side of the driven wheel 21, three groups of inner rotating rods 24 are respectively located on the inner sides of the three rotating boxes 12, three groups of coil cores 25 are respectively located on the inner sides of the three rotating boxes 12, and the coil cores 25 and the inner rotating rods 24 are staggered, three pressure resistors 22 are respectively connected in series with the three groups of coil cores 25 in the same circuit, a supporting arc plate 18 is fixedly installed on the top of the kettle cover 2, and a power connection box 5 is fixedly installed on the top of the supporting arc plate 18, and the power connection box 5 is located directly above the stirring rod 10, and the stirring rod 10 is electrically connected to the three pressure resistors 22 and the three groups of coil cores 25 through wires.

[0028] The working principle of the above technical solution is as follows: first, an external power supply is connected, and then a catalyst is added into the interior of the reaction electric heating kettle 1, and then the kettle cover 2 is installed on the top outer side of the reaction electric heating kettle 1, and then the feed pipe 1 3 and the feed pipe 2 30 are connected to the benzene supply pipe and the olefin supply pipe respectively, and the discharge pipe 4 receives the manifold, and then the valves inside the feed pipe 1 3 and the feed pipe 2 30 are opened to inject benzene and olefin into the interior of the reaction electric heating kettle 1, and then the reaction electric heating kettle 1 is heated, and benzene and olefin react under the action of the catalyst to generate linear alkylbenzene, and during the reaction of benzene and olefin, power can be supplied to the pressure rheostat 22 and the coil core 25 through the electrical box 5, so that the coil core 25 can be electrically connected to the pressure rheostat 22 and the coil core 25. The core 25 is magnetic, so that the viscosity of the magnetorheological fluid 26 inside the rotating box 12 increases and the fluidity decreases, so that when the stirring rod 10 drives the inner rotating rod 24 to rotate, the inner rotating rod 24 can drive the rotating box 12 to rotate on the outside of the stirring rod 10 through the magnetorheological fluid 26, thereby driving the stirring blade 11 to rotate, stirring the reaction liquid inside the reaction electric heating kettle 1, so that benzene and olefins react fully, increasing the contact area between them, thereby improving the reaction rate and conversion rate, helping to accelerate the diffusion and mass transfer process of the reactants, making the reaction more sufficient and efficient, and stirring can ensure uniform temperature distribution in the reactor, prevent local overheating or coking, and ensure stable production. In addition, the pressure rheostat 22 can adjust its resistance according to the liquid level of the reaction liquid in the reaction kettle 1, so that the currents passing through the three groups of coil cores 25 are different, the coil core 25 at the bottom of the reaction kettle 1 has the largest current, and the coil core 25 at the top of the reaction kettle 1 has the smallest current, so that the magnetic forces of the three coil cores 25 are different, so that the viscosity and fluidity of the magnetorheological fluid 26 in the three rotating boxes 12 are different, and the stirring intensity of the stirring rod 10 also presents a top-down increasing trend, which cleverly adapts to the stirring intensity required by the materials at different positions in the reaction kettle 1. At the upper part of the reaction kettle 1, the required The stirring force is relatively small, so the rotation speed provided by the reaction kettle 1 is relatively low, which can avoid unnecessary energy consumption caused by excessive stirring of the material. As the material gradually sinks to the middle and lower part of the reaction kettle 1, the stirring rod 10 needs a greater stirring force to ensure sufficient mixing of the material. Through this differentiated speed setting, not only the stirring effect is optimized, but also the unnecessary consumption of some stirring energy is significantly reduced, which not only helps to reduce the operating load of the drive motor 8 and extend its service life, but also further improves the energy efficiency of the entire stirring system. The drive motor 8 runs more smoothly while avoiding unnecessary loads, reduces energy consumption and emissions, and makes an important contribution to the realization of energy conservation and emission reduction goals.

[0029] In another embodiment, Figure 1-Figure 9As shown, three groups of limit rings 23 are fixedly installed on the outer side of the stirring rod 10, and three rotating boxes 12 are respectively installed on the inner side of the three groups of limit rings 23 for sealing rotation. Among them, the stirring blades 11 fixedly connected to the outer sides of two rotating boxes 12 are fixedly installed with simulated fish bait stirring blocks 17 at one end away from the rotating box 12.

[0030] When the stirring blade 11 rotates, it can drive the simulated fish bait stirring block 17 to rotate. When the simulated fish bait stirring block 17 moves in the liquid, it cleverly uses the principles of fluid mechanics to enhance the stirring effect. When the simulated fish bait stirring block 17 swings left and right in the manner of a fish swimming, it can not only effectively promote the circulation of the surrounding liquid, but also generate eddy currents and shear forces during the swinging process. These dynamic effects can greatly improve the mixing uniformity of the liquid. The left and right swinging of the simulated fish bait stirring block 17 can break the original static or laminar state of the liquid, so that all parts of the liquid can be fully stirred and mixed, with higher stirring efficiency and a wider stirring range. The simulated fish bait stirring block 17 can also continuously change the contact area and angle with the liquid during the movement, thereby further promoting the mixing of the liquid.

[0031] In another embodiment, Figure 1-Figure 9 As shown, a driving gear ring 15 is fixedly installed on the end of a stirring blade 11 fixedly connected to the outside of a rotating box 12 away from the rotating box 12, four connecting arc plates 28 are fixedly installed on the bottom of the kettle cover 2, and fixed cylinders 29 are fixedly installed on the bottom of the four connecting arc plates 28, and a rotating cylinder 9 is rotatably installed on the bottom of the fixed cylinder 29, and a driven gear ring 16 is fixedly installed on the outside of the rotating cylinder 9, and the outer side of the driven gear ring 16 is meshed with the outer side of the driving gear ring 15. A liquid inlet hole 13 is opened at the bottom of the rotating cylinder 9, and four connecting rods 19 are fixedly installed on the bottom of the kettle cover 2, and spiral lifting rods 20 are fixedly installed on the ends of the four connecting rods 19 away from the kettle cover 2, and the four spiral lifting rods 20 are respectively located on the inner sides of the four rotating cylinders 9.

[0032] When the stirring blade 11 rotates, it can drive the transmission gear ring 15 to rotate, thereby driving the driven gear ring 16 to rotate, and driving the rotating cylinder 9 to rotate on the outside of the spiral lifting rod 20. In conjunction with the spiral lifting rod 20, the liquid at the bottom of the reaction kettle 1 can be lifted to the top of the reaction kettle 1 to prevent the unreacted liquid from being deposited at the bottom of the reaction kettle 1, and fully mixed and stirred with the liquid at the top, so that each liquid molecule has more opportunities to collide and react with other reactants, thereby ensuring the continuity and uniformity of the reaction process.

[0033] In another embodiment, Figure 1-Figure 9As shown, a guide plate 27 is fixedly installed on one side of the top of the fixed cylinder 29, and the height of the guide plate 27 away from one end of the fixed cylinder 29 is lower than the height of the end where the guide plate 27 is connected to the fixed cylinder 29. A foam collecting frame 14 is fixedly installed on the outer side of the top of the rotating cylinder 9, and a plurality of leakage holes with a hole diameter of 1 mm are opened at the bottom of the foam collecting frame 14.

[0034] The liquid lifted by the spiral lifting rod 20 will be discharged to the top of the guide plate 27 through the top of the fixed cylinder 29, and then guided to the center of the reaction kettle 1 through the guide plate 27 to fall, and the reaction foam generated on the top of the liquid surface inside the reaction kettle 1 will be moved around, and when the rotating cylinder 9 rotates, the foam will continuously converge to the top of the rotating rotating cylinder 9, so that the foam enters the interior of the foam collection frame 14 to prevent the foam from affecting the reaction.

[0035] Working principle: firstly, connect an external power source, then add a catalyst into the interior of the reaction kettle 1, then install the kettle cover 2 on the outside of the top of the reaction kettle 1, then connect the feed pipe 1 3 and the feed pipe 2 30 to the benzene supply pipe and the olefin supply pipe respectively, and receive the manifold through the discharge pipe 4, then open the valves inside the feed pipe 1 3 and the feed pipe 2 30 to inject benzene and olefin into the interior of the reaction kettle 1, then heat the reaction kettle 1, benzene and olefin will react under the action of the catalyst to generate linear alkylbenzene, and in the process of the reaction of benzene and olefin, power can be supplied to the pressure resistor 22 and the coil core 25 through the power connection box 5, so that the coil core 25 has magnetism, thereby making the rotating box 12 The viscosity of the internal magnetorheological fluid 26 increases and the fluidity decreases, so that when the stirring rod 10 drives the inner rotating rod 24 to rotate, the inner rotating rod 24 can drive the rotating box 12 to rotate on the outside of the stirring rod 10 through the magnetorheological fluid 26, thereby driving the stirring blade 11 to rotate, and stirring the reaction liquid inside the reaction electric heating kettle 1. When the stirring blade 11 rotates, it can drive the simulated fish bait stirring block 17 to rotate. When the simulated fish bait stirring block 17 moves in the liquid, it can effectively promote the surrounding liquid to circulate, and can also generate eddy currents and shear forces during the swinging process. These dynamic effects can greatly improve the mixing uniformity of the liquid. When the stirring blade 11 rotates, it can drive the transmission gear ring 15 to rotate, thereby The driven gear ring 16 rotates, driving the rotating cylinder 9 to rotate on the outside of the spiral lifting rod 20, and the spiral lifting rod 20 can be used to lift the liquid at the bottom of the reaction kettle 1 to the top of the reaction kettle 1, so as to prevent the unreacted liquid from being deposited at the bottom of the reaction kettle 1, and fully mix and stir with the liquid at the top, so that each liquid molecule has more opportunities to collide and react with other reactants, thereby ensuring the continuity and uniformity of the reaction process. In addition, the pressure rheostat 22 can adjust its resistance value according to the liquid level of the reaction liquid inside the reaction kettle 1, so that the current passing through the three groups of coil cores 25 is different, and the coil core 25 at the bottom of the reaction kettle 1 is electrically The current of the coil core 25 located at the top of the reaction electric kettle 1 is the smallest, so that the magnetic forces of the three coil cores 25 are different, so that the viscosity and fluidity of the magnetorheological fluid 26 inside the three rotating boxes 12 are different, and the stirring intensity of the stirring rod 10 also presents an increasing trend from top to bottom. Through this differentiated speed setting, not only the optimization of the stirring effect is achieved, but also the unnecessary consumption of some stirring energy is significantly reduced, which not only helps to reduce the operating load of the drive motor 8 and extend its service life, but also further improves the energy efficiency of the entire stirring system. The drive motor 8 runs more smoothly while avoiding unnecessary loads, reduces energy consumption and emissions, and makes an important contribution to the realization of energy conservation and emission reduction goals.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A linear alkylbenzene production device, comprising a reaction electric heating kettle (1) and a kettle cover (2), characterized in that: One side of the top of the reaction kettle (1) is connected to a feed pipe 1 (3), the other side of the top of the reaction kettle (1) is connected to a feed pipe 2 (30), the bottom of the reaction kettle (1) is connected to a discharge pipe (4), a stirring rod (10) is rotatably mounted inside the kettle cover (2), three rotating boxes (12) are sleeved and mounted on the outside of the stirring rod (10), the insides of the three rotating boxes (12) are all filled with magnetorheological fluid (26), the outsides of the three rotating boxes (12) are all fixedly mounted with stirring blades (11), and the outside of the stirring rod (10) is fixedly mounted with a Three groups of inner rotating rods (24); three groups of coil cores (25) are fixedly mounted on the outer side of the stirring rod (10); three pressure resistors (22) are fixedly mounted inside the stirring rod (10); a driving motor (8) is fixedly mounted on the top of the kettle cover (2); a driving wheel (6) is fixedly mounted on the output end of the driving motor (8); a transmission belt (7) is sleeved and mounted on the outer side of the driving wheel (6); a driven wheel (21) is fixedly mounted on the outer side of the stirring rod (10); and one end of the transmission belt (7) away from the driving wheel (6) is sleeved and mounted on the outer side of the driven wheel (21).

2. A linear alkylbenzene production equipment according to claim 1, characterized in that: The three groups of inner rotating rods (24) are respectively located on the inner sides of the three rotating boxes (12); the three groups of coil cores (25) are respectively located on the inner sides of the three rotating boxes (12); the coil cores (25) and the inner rotating rods (24) are arranged in an alternating manner; and the three pressure resistors (22) are respectively connected in series with the three groups of coil cores (25) in the same circuit.

3. A linear alkylbenzene production equipment according to claim 2, characterized in that: A supporting arc plate (18) is fixedly mounted on the top of the kettle cover (2), and an electrical connection box (5) is fixedly mounted on the top of the supporting arc plate (18). The electrical connection box (5) is located directly above the stirring rod (10), and the stirring rod (10) is electrically connected to three pressure resistors (22) and three sets of coil cores (25) via wires.

4. A linear alkylbenzene production equipment according to claim 3, characterized in that: Three groups of limiting rings (23) are fixedly mounted on the outer side of the stirring rod (10), and the three rotating boxes (12) are respectively mounted on the inner side of the three groups of limiting rings (23) in a sealed and rotatable manner. The ends of the stirring blades (11) fixedly connected to the outer sides of two of the rotating boxes (12) and away from the rotating boxes (12) are fixedly mounted with simulated fish bait stirring blocks (17).

5. A linear alkylbenzene production equipment according to claim 4, characterized in that: A driving gear ring (15) is fixedly mounted on one end of a stirring blade (11) fixedly connected to the outside of one of the rotating boxes (12) and away from the rotating box (12); four connecting arc plates (28) are fixedly mounted on the bottom of the kettle cover (2); a fixed cylinder (29) is fixedly mounted on the bottom of each of the four connecting arc plates (28); a rotating cylinder (9) is rotatably mounted on the bottom of each of the fixed cylinders (29); a driven gear ring (16) is fixedly mounted on the outside of each of the rotating cylinders (9); and the outside of each of the driven gear rings (16) is meshed with the outside of the driving gear ring (15).

6. A linear alkylbenzene production equipment according to claim 5, characterized in that: A liquid inlet hole (13) is provided at the bottom of the rotating cylinder (9), and four connecting rods (19) are fixedly mounted on the bottom of the kettle cover (2). A spiral lifting rod (20) is fixedly mounted on one end of the four connecting rods (19) away from the kettle cover (2), and the four spiral lifting rods (20) are respectively located on the inner sides of the four rotating cylinders (9).

7. A linear alkylbenzene production equipment according to claim 6, characterized in that: A guide plate (27) is fixedly mounted on one side of the top of the fixed cylinder (29), and the height of the guide plate (27) at one end away from the fixed cylinder (29) is lower than the height of the end where the guide plate (27) is connected to the fixed cylinder (29).

8. A linear alkylbenzene production equipment according to claim 7, characterized in that: A foam collection frame (14) is fixedly mounted on the outer side of the top of the rotating cylinder (9), and a plurality of leakage holes with a hole diameter of 1 mm are opened at the bottom of the foam collection frame (14).

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