External circulation cooling device for chlorinated paraffin production

Abstract

The utility model discloses an external circulation cooling device for chlorinated paraffin production, and relates to the technical field of cooling devices. The cooling device comprises a circulating cooling box, one side of the circulating cooling box is communicated with a first conveying pump, the top of the circulating cooling box is communicated with a cooling fan, one side of the circulating cooling box is communicated with a cooling liquid outlet pipe, one side of the circulating cooling box is communicated with a cooling liquid inlet pipe, and one side of the circulating cooling box is provided with a cooling assembly. Through the synergistic effect of the semiconductor chilling plate and the second conveying pump, low-temperature cooling liquid is conveyed to the main circulation pipeline at the initial heat release peak value of the chlorination reaction, and the temperature of the chlorination reaction kettle is rapidly reduced. The kinetic energy of the uniform mixing assembly is combined to drive stirring, temperature stratification is eliminated, the problem of delay of a traditional cooling system is solved, side reactions are remarkably reduced, the product purity and production safety are improved, and the device is particularly suitable for efficient production of high-chlorine-content chlorinated paraffin.

Description

Technical Field

[0001] This utility model belongs to the technical field of cooling devices, and in particular relates to an external circulation cooling device for the production of chlorinated paraffin. Background Technology

[0002] Chlorinated paraffin is a chlorinated derivative produced by the substitution reaction of paraffin hydrocarbons and chlorine under specific conditions. The chlorine content is usually between 40% and 70%. It is widely used in flame retardants, plasticizers, lubricants and other fields. Its industrial production process mainly includes the following steps: raw material pretreatment, chlorination reaction, deacidification and neutralization and post-treatment. In the production of chlorinated paraffin, the initial heat release in the chlorination reaction stage is extremely large, so an external circulation cooling device is connected to cool the chlorination reaction vessel.

[0003] Traditional cooling systems have the following problems: single jacket cooling or conventional external circulation devices are unable to quickly transfer the high heat at the beginning of the reaction, resulting in a sudden temperature rise, causing side reactions and safety hazards. Traditional cooling media rely on external heat exchangers, and heat transfer is delayed, making it impossible to respond to the initial exothermic peak in a timely manner. To address these issues, we provide an external circulation cooling device for the production of chlorinated paraffin. Utility Model Content

[0004] The purpose of this invention is to provide an external circulation cooling device for the production of chlorinated paraffin. By combining the cooling component and the mixing component, it solves the problem in the existing cooling devices that rely on external heat exchangers for the traditional cooling medium, resulting in a delay in heat transfer and an inability to respond promptly to the initial exothermic peak.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution.

[0006] This utility model relates to an external circulation cooling device for the production of chlorinated paraffin, comprising a circulating cooling tank, a first delivery pump connected to one side of the circulating cooling tank, a cooling fan connected to the top of the circulating cooling tank, a coolant outlet pipe connected to one side of the circulating cooling tank, a coolant inlet pipe connected to one side of the circulating cooling tank, a cooling assembly provided on one side of the circulating cooling tank, the cooling assembly including a cooling box disposed on one side of the circulating cooling tank, a first cooling plate and a second cooling plate disposed inside the cooling box, and a second delivery pump connected to one side of the cooling box, the coolant outlet pipe connected to a mixing assembly, the mixing assembly including a mixing pipe connected to the coolant outlet pipe, a vertical rod fixedly connected to the inside of the mixing pipe, a water turbine movably connected to one side of the vertical rod via a bearing, and a stirring rod fixedly connected to the water turbine.

[0007] The present invention is further configured such that a replenishment pipe is connected to the bottom of the coolant outlet pipe, the replenishment pipe is connected to the cooling box, and a self-control valve is connected to the surface of the replenishment pipe.

[0008] The present invention is further configured such that the water outlet end of the second delivery pump is connected to a delivery pipe, the end of the delivery pipe away from the second delivery pump is connected to a coolant outlet pipe, and a one-way valve is connected to the surface of the delivery pipe.

[0009] The present invention is further configured such that the coolant inlet pipe is connected to a fluid tank, the fluid tank is fixedly connected to one side of the cooling box, and the hot end of the second cooling chip extends into the fluid tank.

[0010] The present invention is further configured such that there are two water-powered wheels and two stirring rods, and both the coolant outlet pipe and the coolant inlet pipe are connected to an external chlorination reactor.

[0011] The present invention is further configured such that a blower box is fixedly connected to one side of the cooling box and outside the first cooling chip, a blower fan is fixedly connected inside the blower box, the hot end of the first cooling chip extends into the blower box, and the cold end of the first cooling chip is located inside the cooling box.

[0012] The present invention has the following beneficial effects.

[0013] 1. This invention utilizes the synergistic effect of a semiconductor cooling chip and a second delivery pump to rapidly reduce the temperature of the chlorination reactor by delivering a low-temperature coolant to the main circulation pipeline during the initial exothermic peak of the chlorination reaction. Combined with the kinetic energy-driven stirring of the mixing component, temperature stratification is eliminated. This design solves the delay problem of traditional cooling systems, significantly reduces side reactions, and improves product purity and production safety, making it particularly suitable for the efficient production of high-chlorine-content chlorinated paraffin.

[0014] 2. This invention achieves zero coolant waste and automatic replenishment through a closed-loop coolant circulation system and an intelligent replenishment pipe + self-control valve, reducing operating costs. The fluid tank recovers and returns the coolant to dissipate heat from the hot end of the second cooling element, combined with forced air cooling via a blower box and fan, maintaining efficient operation of the cooling element. The mixing component utilizes fluid kinetic energy to drive stirring, requiring no additional energy. Furthermore, it produces no refrigerant pollution, meeting green production requirements.

[0015] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0017] Figure 1 A perspective view of the external circulation cooling unit for the production of chlorinated paraffin.

[0018] Figure 2Left view of the cooling box in the external circulation cooling unit for the production of chlorinated paraffin.

[0019] Figure 3 A cross-sectional view of the fluid tank in the external circulation cooling system for the production of chlorinated paraffin.

[0020] Figure 4 A cross-sectional view of the mixing tube in the external circulation cooling device for the production of chlorinated paraffin.

[0021] Figure 5 A cross-sectional view of the blower box in the external circulation cooling device for the production of chlorinated paraffin.

[0022] In the attached diagram: 1. Circulating cooling tank; 2. First transfer pump; 3. Cooling fan; 4. Coolant outlet pipe; 5. Coolant inlet pipe; 6. Cooling tank; 7. First refrigeration chip; 8. Second refrigeration chip; 9. Second transfer pump; 10. Mixing pipe; 11. Vertical rod; 12. Hydrodynamic wheel; 13. Stirring rod; 14. Replenishment pipe; 15. Automatic control valve; 16. Transfer pipe; 17. One-way valve; 18. Fluid tank; 19. Air blower box; 20. Air blower fan. Detailed Implementation

[0023] The technical solutions of the present utility model will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Example 1

[0025] Please see Figures 1-5This utility model relates to an external circulation cooling device for the production of chlorinated paraffin, comprising a circulating cooling tank 1, a first delivery pump 2 connected to one side of the circulating cooling tank 1, a cooling fan 3 connected to the top of the circulating cooling tank 1, a coolant outlet pipe 4 connected to one side of the circulating cooling tank 1, a coolant inlet pipe 5 connected to one side of the circulating cooling tank 1, and a cooling assembly installed on one side of the circulating cooling tank 1. The cooling assembly includes a cooling box 6 installed on one side of the circulating cooling tank 1, a first cooling element 7 and a second cooling element 8 installed inside the cooling box 6, and a second delivery pump 9 connected to one side of the cooling box 6. Through the installation of the cooling assembly, during the initial exothermic peak of the chlorination reaction, a low-temperature coolant is rapidly introduced into a room-temperature cooling box. The coolant is cooled to lower the temperature of the room temperature coolant, which is used to reduce the temperature at the beginning of the reaction and to compensate for the delay problem of traditional cooling systems. The coolant outlet pipe 4 is connected to a mixing component, which includes a mixing pipe 10 connected to the coolant outlet pipe 4, a vertical rod 11 fixedly connected inside the mixing pipe 10, a water wheel 12 movably connected to one side of the vertical rod 11 through a bearing, and a stirring rod 13 fixedly connected to the water wheel 12. By setting up the mixing component, the kinetic energy of the coolant flow is used to drive the water wheel 12 to rotate, which drives the stirring rod 13 to shear and stir the coolant in the mixing pipe 10, so that the room temperature coolant and the low temperature coolant are quickly and evenly mixed, thereby reducing the coolant temperature.

[0026] Example 2

[0027] Please see Figures 1-5Based on Example 1, a replenishment pipe 14 is connected to the bottom of the coolant outlet pipe 4. The replenishment pipe 14 is connected to the cooling box 6. A self-regulating valve 15 is connected to the surface of the replenishment pipe 14. After the coolant in the cooling box 6 is used, the coolant is replenished through the replenishment pipe 14. A delivery pipe 16 is connected to the outlet end of the second delivery pump 9. The end of the delivery pipe 16 away from the second delivery pump 9 is connected to the coolant outlet pipe 4. A one-way valve 17 is connected to the surface of the delivery pipe 16. The delivery pipe 16 and the one-way valve 17 are used to deliver low-temperature coolant to the coolant outlet pipe 4. A fluid tank 18 is connected to the coolant inlet pipe 5. The fluid tank 18 is fixedly connected to one side of the cooling box 6. The hot end of the second cooling element 8 extends into the fluid tank 18, and the cold end of the second cooling element 8 is located inside the cooling box 6. The system is configured such that the used coolant flows through the fluid tank 18, and the continuously flowing coolant cools the hot end of the second refrigeration chip 8, maintaining it at a suitable temperature. There are two water wheels 12 and two stirring rods 13. The coolant outlet pipe 4 and the coolant inlet pipe 5 are both connected to the external chlorination reactor. The water wheels 12 and the stirring rods 13 are used to stir the room temperature coolant in the coolant outlet pipe 4 and the low temperature coolant in the delivery pipe 16. A blower box 19 is fixedly connected to one side of the cooling box 6 and outside the first refrigeration chip 7. A blower fan 20 is fixedly connected inside the blower box 19. The hot end of the first refrigeration chip 7 extends into the blower box 19, and the cold end of the first refrigeration chip 7 is located inside the cooling box 6. The blower fan 20 is used to quickly reduce the temperature of the hot end of the first refrigeration chip 7.

[0028] The working principle of this utility model is as follows: The cooling device is connected to the control system of the external production equipment. When a chlorination reaction is required, the first cooling chip 7 and the second cooling chip 8 are energized. The first cooling chip 7 and the second cooling chip 8 quickly reduce the temperature of the coolant in the cooling box 6. The room temperature coolant is transported to the external reaction vessel through the coolant outlet pipe 4. During the transport process, the second delivery pump 9 delivers the low temperature coolant to the coolant outlet pipe 4 through the delivery pipe 16. The room temperature coolant and the low temperature coolant impact the water wheel 12. The water wheel 12 drives the stirring rod 13 to rotate. The stirring rod 13 forms a turbulent flow field, which mixes the room temperature and low temperature coolants and reduces the temperature of the coolant.

[0029] After cooling, the coolant flows through the external reactor to remove the heat generated during the chlorination reaction through heat exchange. The used coolant flows back to the circulating cooling tank 1 through the coolant inlet pipe 5 for cooling. During the coolant return process, it flows through the fluid tank 18, carrying away the heat from the hot end of the second cooling chip 8 in the fluid tank 18, so that the hot end of the second cooling chip 8 always maintains a certain temperature, thereby maintaining the cooling effect at the cooling end. When the coolant flows through the fluid tank 18, the power to the first cooling chip 7 can be cut off to reduce energy consumption.

[0030] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An external cooling device for the production of chlorinated paraffins, comprising a circulating cooling tank (1), characterised in that: The circulating cooling tank (1) is connected to a first delivery pump (2) on one side, a cooling fan (3) is connected to the top of the circulating cooling tank (1), a coolant outlet pipe (4) is connected to one side of the circulating cooling tank (1), and a coolant inlet pipe (5) is connected to one side of the circulating cooling tank (1). A cooling assembly is provided on one side of the circulating cooling box (1). The cooling assembly includes a cooling box (6) provided on one side of the circulating cooling box (1), a first cooling chip (7) and a second cooling chip (8) provided inside the cooling box (6), and a second delivery pump (9) connected to one side of the cooling box (6). The coolant outlet pipe (4) is connected to a mixing assembly, which includes a mixing pipe (10) connected to the coolant outlet pipe (4), a vertical rod (11) fixedly connected inside the mixing pipe (10), a water wheel (12) movably connected to one side of the vertical rod (11) via a bearing, and a stirring rod (13) fixedly connected to the water wheel (12).

2. The external cooling device for chlorinated paraffin production according to claim 1, characterized by: The bottom of the coolant outlet pipe (4) is connected to a replenishment pipe (14), which is connected to the cooling box (6). A self-regulating valve (15) is connected to the surface of the replenishment pipe (14).

3. The external cooling device for chlorinated paraffin production according to claim 1, characterized by: The outlet end of the second delivery pump (9) is connected to a delivery pipe (16), and the end of the delivery pipe (16) away from the second delivery pump (9) is connected to the coolant outlet pipe (4). A one-way valve (17) is connected to the surface of the delivery pipe (16).

4. The external cooling device for chlorinated paraffin production according to claim 1, characterized by: The coolant inlet pipe (5) is connected to a fluid tank (18), which is fixedly connected to one side of the cooling box (6), and the hot end of the second cooling chip (8) extends into the fluid tank (18).

5. The external cooling device for chlorinated paraffin production according to claim 1, characterized by: The number of the water turbine (12) and the stirring rod (13) are both two, and the coolant outlet pipe (4) and the coolant inlet pipe (5) are both connected to the external chlorination reactor.

6. The external cooling device for chlorinated paraffin production according to claim 1, characterized by: A blower box (19) is fixedly connected to one side of the cooling box (6) and outside the first cooling chip (7). A blower fan (20) is fixedly connected inside the blower box (19). The hot end of the first cooling chip (7) extends into the blower box (19), and the cold end of the first cooling chip (7) is located inside the cooling box (6).

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