Medium-long carbon chain chlorinated paraffin reactor

Abstract

The utility model relates to the technical field of paraffin reactors, in particular to a medium-long carbon chain chlorinated paraffin reactor. The reactor comprises a reactor main body, the bottom of the reactor main body is fixedly connected with a support frame, the top of the reactor main body is fixedly communicated with an air inlet pipe, the lower surface of the reactor main body is fixedly communicated with an exhaust pipe, the inner wall of the reactor main body is provided with a cooling assembly, and an inner cavity of the reactor main body is provided with a stirring cooling assembly. Paraffin and chlorine in the reactor can be driven to be fully mixed through rotation of the stirring rod, meanwhile, the first connecting pipe is responsible for introducing cooling liquid into the stirring rod, the second connecting pipe is used for flowing out of the cooling liquid, a complete cooling liquid circulation channel is formed, and meanwhile the stirring rod is communicated with the stirring cooling pipeline. Cooling liquid can exchange heat with surrounding high-temperature paraffin through the pipe wall of the stirring cooling pipeline, so that the temperature of the paraffin in the areas is effectively reduced.

Description

Technical Field

[0001] This utility model relates to the field of paraffin reactor technology, and more specifically, to a medium- and long-chain chlorinated paraffin reactor. Background Technology

[0002] Medium- and long-chain chlorinated paraffins are an important class of chemical products, widely used in plasticizers, flame retardants, lubricant additives, and other fields. Their production process mainly relies on chlorination reactions, and the reactor is the core equipment for realizing this process. The chlorination reaction between paraffin and chlorine is a strong exothermic reaction, which releases a large amount of heat during the reaction. A jacket is installed outside the reactor, and cooling water or a cooling medium is introduced to effectively remove the heat generated during the reaction, thereby ensuring that the reaction can proceed stably under suitable temperature conditions.

[0003] Most existing reactors use a jacket design, which limits the removal of heat. Only the part of the paraffin in contact with the outer wall of the jacket can have its heat removed through the jacket, while the heat of the paraffin that is not in direct contact with the jacket is difficult to remove in time. The temperature of the paraffin that is not in contact with the jacket continues to rise, which may lead to local overheating. Excessive temperature may trigger side reactions, generate impurities, reduce the purity of the product, and increase the difficulty of subsequent separation and purification. Utility Model Content

[0004] The purpose of this invention is to overcome the above-mentioned shortcomings and provide a medium-to-long carbon chain chlorinated paraffin reactor.

[0005] To achieve the above objectives, this utility model provides a medium- and long-chain chlorinated paraffin reactor, comprising a reactor body, a support frame fixedly connected to the bottom of the reactor body, an air inlet pipe fixedly connected to the top of the reactor body, an exhaust pipe fixedly connected to the lower surface of the reactor body, a cooling assembly provided on the inner wall of the reactor body, and a stirring and cooling assembly provided in the inner cavity of the reactor body.

[0006] The stirring and cooling assembly includes a stirring rod rotatably connected to the inner cavity of the reactor body, a first connecting pipe rotatably connected to the end of the stirring rod, a second connecting pipe rotatably connected to the end of the stirring rod away from the first connecting pipe, and a stirring and cooling pipe fixedly connected to the surface of the stirring rod.

[0007] As a further improvement to this technical solution, the cooling assembly includes a jacket layer formed in the inner cavity of the reactor body, an inlet pipe fixedly connected to the top of the reactor body, and a drain pipe fixedly connected to the top of the reactor body.

[0008] The end of the water inlet pipe is connected to the surface of the jacket layer, and the end of the drain pipe is also connected to the surface of the jacket layer.

[0009] As a further improvement to this technical solution, a fixing member is fixedly connected to the surface of the stirring and cooling pipe, the inner wall of the fixing member is fixedly connected to the surface of the stirring rod, a pipe fixer is fixedly connected to the surface of the first connecting pipe, and the bottom of the pipe fixer is fixedly connected to the top of the support frame.

[0010] As a further improvement to this technical solution, a bearing is fixedly connected to the inner cavity of the reactor body, and the inner cavity of the bearing is rotatably connected to the surface of the stirring rod.

[0011] As a further improvement to this technical solution, a connecting gear is fixedly connected to the surface of the stirring rod, a drive gear is meshed with the outer edge of the connecting gear, a motor is fixedly connected to the bottom of the drive gear, a connecting frame is fixedly connected to the bottom of the reactor body, and the inner cavity of the connecting frame is fixedly connected to the surface of the motor.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] In this medium-to-long carbon chain chlorinated paraffin reactor, the rotation of the stirring rod can drive the paraffin and chlorine gas in the reactor to mix thoroughly. At the same time, the first connecting pipe is responsible for introducing coolant into the stirring rod, and the second connecting pipe is used for the outflow of coolant, forming a complete coolant circulation path. Meanwhile, the stirring rod is connected to the stirring and cooling pipe, which allows the coolant to exchange heat with the surrounding high-temperature paraffin through the pipe wall, thereby effectively reducing the temperature of paraffin in these areas. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the overall internal cavity structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the overall frontal planar structure of the inner cavity of this utility model;

[0017] Figure 4 This is a schematic diagram showing the coolant flow direction arrow of this utility model;

[0018] Figure 5 This is a schematic diagram of the jacket layer structure of this utility model;

[0019] Figure 6 This is a schematic diagram of the stirring rod structure of this utility model;

[0020] Figure 7 This is a schematic diagram of the fastener structure of this utility model.

[0021] The meanings of the labels in the diagram are as follows:

[0022] 1. Reactor body; 11. Support frame; 12. Inlet pipe; 13. Exhaust pipe;

[0023] 2. Cooling components; 21. Jacket layer; 22. Water inlet pipe; 23. Drain pipe;

[0024] 3. Stirring and cooling assembly; 31. Stirring rod; 310. Connecting gear; 311. First connecting pipe; 3110. Pipe retainer; 312. Second connecting pipe; 32. Stirring and cooling pipe; 320. Fixing component; 33. Bearing; 34. Drive gear; 35. Motor; 36. Connecting frame; 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] Example

[0027] Please see Figures 1-7 As shown, this embodiment provides a medium- and long-chain chlorinated paraffin reactor, including a reactor body 1, characterized in that: a support frame 11 is fixedly connected to the bottom of the reactor body 1, an air inlet pipe 12 is fixedly connected to the top of the reactor body 1, an exhaust pipe 13 is fixedly connected to the lower surface of the reactor body 1, a cooling component 2 is provided on the inner wall of the reactor body 1, and a stirring and cooling component 3 is provided in the inner cavity of the reactor body 1.

[0028] The stirring and cooling assembly 3 includes a stirring rod 31 rotatably connected to the inner cavity of the reactor body 1, a first connecting pipe 311 rotatably connected to the end of the stirring rod 31, a second connecting pipe 312 rotatably connected to the end of the stirring rod 31 away from the first connecting pipe 311, and a stirring and cooling pipe 32 fixedly connected to the surface of the stirring rod 31.

[0029] Chlorine and paraffin gas, the gases involved in the reaction, are introduced into the reactor body 1 through the air inlet pipe 12, initiating the reaction within the inner cavity of the reactor body 1. The paraffin and chlorine undergo a strong exothermic chlorination reaction, generating considerable heat. At this point, the cooling component 2 provides initial cooling for the reaction. However, as the reaction continues, the heat accumulates, and the cooling component 2 alone is insufficient to meet the heat dissipation requirements. When the temperature rises to a certain level, the operator connects the coolant to the first connecting pipe 311. The coolant flows through the pipe into the stirring rod 31 and circulates within the stirring rod 31. The coolant is diverted into the connected stirring and cooling pipe 32. At the same time, the stirring rod 31 starts to rotate, causing the stirring and cooling pipe 32 to move in a circular motion within the inner cavity of the reactor body 1. As the stirring and cooling pipe 32 rotates, the coolant carried within it can penetrate into every corner of the reactor, especially the paraffin areas that are not in direct contact with the cooling components 2. The coolant exchanges heat with the surrounding high-temperature paraffin through the pipe wall of the stirring and cooling pipe 32, thereby effectively reducing the temperature of the paraffin in these areas and ensuring that the temperature of the entire reaction system can be maintained within a relatively stable and suitable range.

[0030] The improvement in this embodiment is as follows:

[0031] Considering that most existing reactors adopt a jacket design, there are certain limitations to heat removal. Only the paraffin in contact with the outer wall of the jacket can have its heat removed through the jacket, while the heat of the paraffin not in direct contact with the jacket is difficult to be removed in time. The temperature of the paraffin not in contact with the jacket continues to rise, which may lead to local overheating. Excessive temperature may trigger side reactions, generate impurities, reduce product purity, and increase the difficulty of subsequent separation and purification. Therefore, the rotation of the stirring rod 31 can drive the paraffin and chlorine in the reactor to mix thoroughly. At the same time, the first connecting pipe 311 is responsible for introducing coolant into the stirring rod 31, and the second connecting pipe 312 is used for the coolant to flow out, forming a complete coolant circulation path. Meanwhile, the stirring rod 31 is connected to the stirring and cooling pipe 32, which allows the coolant to exchange heat with the surrounding high-temperature paraffin through the pipe wall of the stirring and cooling pipe 32, thereby effectively reducing the temperature of the paraffin in these areas.

[0032] In order for the cooling assembly 2 to react with the paraffin and chlorine in the inner cavity of the reactor body 1, it is necessary to disclose the specific parts of the cooling assembly 2. Therefore, the cooling assembly 2 includes a jacket layer 21 opened in the inner cavity of the reactor body 1, a water inlet pipe 22 fixedly connected to the top of the reactor body 1, and a drain pipe 23 fixedly connected to the top of the reactor body 1.

[0033] The end of the water inlet pipe 22 is connected to the surface of the jacket layer 21, and the end of the drain pipe 23 is connected to the surface of the jacket layer 21. By introducing the coolant into the water inlet pipe 22, the coolant will reach the jacket layer 21 through the water inlet pipe 22. At this time, the coolant in the inner cavity of the jacket layer 21 will come into contact with the paraffin in the inner cavity of the reactor body 1, thereby exchanging heat with the high-temperature paraffin.

[0034] To ensure stability during the rotation of the stirring rod 31 and the stirring cooling pipe 32, and to maintain stability during the transmission of coolant by the first connecting pipe 311, a fixing member 320 is fixedly connected to the surface of the stirring cooling pipe 32. The inner wall of the fixing member 320 is fixedly connected to the surface of the stirring rod 31. A pipe retainer 3110 is fixedly connected to the surface of the first connecting pipe 311, and the bottom of the pipe retainer 3110 is fixedly connected to the top of the support frame 11. By setting the fixing member 320, the two stirring cooling pipes 32 are fixedly connected to the stirring rod 31, ensuring that the stirring cooling pipe 32 remains stable during rotation, and that the pipe retainer 3110 keeps the first connecting pipe 311 stable during the transmission of coolant.

[0035] In order to keep the stirring rod 31 stable when it can rotate in the inner cavity of the reactor body 1, a bearing 33 is fixedly connected to the inner cavity of the reactor body 1, and the inner cavity of the bearing 33 is rotatably connected to the surface of the stirring rod 31.

[0036] In order for the stirring rod 31 to rotate, a driving device is needed to drive the stirring rod 31. Therefore, a connecting gear 310 is fixedly connected to the surface of the stirring rod 31, and a driving gear 34 is meshed with the outer edge of the connecting gear 310. A motor 35 is fixedly connected to the bottom of the driving gear 34, and a connecting frame 36 is fixedly connected to the bottom of the reactor body 1. The inner cavity of the connecting frame 36 is fixedly connected to the surface of the motor 35. When the motor 35 works, it can drive the driving gear 34 to rotate. At this time, the rotation of the driving gear 34 will drive the connecting gear 310 to rotate. Then, the rotation of the connecting gear 310 will drive the stirring rod 31 and the stirring and cooling pipe 32 to rotate in the inner cavity of the reactor body 1.

[0037] In practical use, the medium-long carbon chain chlorinated paraffin reactor of this invention introduces chlorine gas and paraffin, which participate in the reaction, into the reactor body 1 through the gas inlet pipe 12, so that the reaction begins in the inner cavity of the reactor body 1. The paraffin and chlorine gas undergo a strong exothermic chlorination reaction, generating a large amount of heat. At this time, coolant is connected to the water inlet pipe 22, and the coolant will reach the jacket layer 21 through the water inlet pipe 22. The coolant in the inner cavity of the jacket layer 21 will then come into contact with the paraffin in the inner cavity of the reactor body 1, thereby exchanging heat with the high-temperature paraffin. However, as the reaction continues, the heat accumulates and increases, and the cooling component 2 alone is no longer sufficient to meet the heat dissipation requirements. At this time, the coolant is connected to the first connecting pipe 311. The coolant flows into the stirring rod 31 through the pipe and is divided inside the stirring rod 31, entering the connected stirring and cooling pipe 32. Then, the motor 35 is started to drive the drive gear 34 to rotate. At this time, the rotation of the drive gear 34 will drive the connecting gear 310 to rotate. The rotation of the connecting gear 310 will cause the stirring rod 31 to start rotating, driving the stirring and cooling pipe 32 to make a circular motion in the inner cavity of the reactor body 1. As the stirring and cooling pipe 32 rotates, the coolant carried in it can penetrate into all corners of the reactor, especially the paraffin areas that are not in direct contact with the cooling components 2. The coolant exchanges heat with the surrounding high-temperature paraffin through the pipe wall of the stirring and cooling pipe 32.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A reactor for medium- and long-chain chlorinated paraffins, comprising a reactor body (1), characterized in that: The reactor body (1) is fixedly connected to a support frame (11) at the bottom, the reactor body (1) is fixedly connected to an air inlet pipe (12) at the top, the reactor body (1) is fixedly connected to an exhaust pipe (13) on the lower surface, the reactor body (1) is provided with a cooling assembly (2) on the inner wall, and the reactor body (1) is provided with a stirring and cooling assembly (3) in the inner cavity. The stirring and cooling assembly (3) includes a stirring rod (31) rotatably connected to the inner cavity of the reactor body (1). The end of the stirring rod (31) is rotatably connected to a first connecting pipe (311), and the end of the stirring rod (31) away from the first connecting pipe (311) is rotatably connected to a second connecting pipe (312). The surface of the stirring rod (31) is fixedly connected to a stirring and cooling pipe (32).

2. The medium-to-long carbon chain chlorinated paraffin reactor according to claim 1, characterized in that: The cooling assembly (2) includes a jacket layer (21) formed in the inner cavity of the reactor body (1), a water inlet pipe (22) is fixedly connected to the top of the reactor body (1), and a drain pipe (23) is fixedly connected to the top of the reactor body (1). The end of the water inlet pipe (22) is connected to the surface of the jacket layer (21), and the end of the drain pipe (23) is connected to the surface of the jacket layer (21).

3. The medium-to-long-chain chlorinated paraffin reactor according to claim 1, characterized in that: The surface of the stirring and cooling pipe (32) is fixedly connected to a fastener (320), the inner wall of the fastener (320) is fixedly connected to the surface of the stirring rod (31), the surface of the first connecting pipe (311) is fixedly connected to a pipe fastener (3110), and the bottom of the pipe fastener (3110) is fixedly connected to the top of the support frame (11).

4. The medium-to-long-chain chlorinated paraffin reactor according to claim 3, characterized in that: The reactor body (1) is fixedly connected to a bearing (33), and the inner cavity of the bearing (33) is rotatably connected to the surface of the stirring rod (31).

5. The medium-to-long-chain chlorinated paraffin reactor according to claim 1, characterized in that: A connecting gear (310) is fixedly connected to the surface of the stirring rod (31), and a driving gear (34) is meshed with the outer edge of the connecting gear (310). A motor (35) is fixedly connected to the bottom of the driving gear (34), and a connecting frame (36) is fixedly connected to the bottom of the reactor body (1). The inner cavity of the connecting frame (36) is fixedly connected to the surface of the motor (35).

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