Adjustable reaction tower cooling device

Abstract

The utility model provides an adjustable reaction tower cooling device which comprises a tower body, the tower body is provided with a shell, the shell is provided with an interlayer for containing cooling media, the side wall of the interlayer is provided with a first inlet, a second inlet and a second outlet, one end of the first inlet and one end of the second inlet are communicated with the interlayer, and the other end of the first inlet and the other end of the second inlet are connected with a medium box. A pump body for supplying media is arranged in the medium box, and a temperature measuring assembly for controlling the opening and closing of the second inlet is arranged in the tower body. The device is simple in structure, the interlayer is divided into the upper part and the lower part, the lower half part of the reaction tower is cooled by the first inlet and the first outlet, the upper half part is cooled by the second inlet and the second outlet, the upper part and the lower part can be respectively cooled when the temperature is relatively high, and the cooling efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of reaction tower cooling technology, specifically to an adjustable reaction tower cooling device. Background Technology

[0002] In the synthesis of methylaniline, many reactions are exothermic. Excessive temperature can cause a series of problems. On the one hand, excessively high temperatures can cause the reaction rate to accelerate too quickly, exceeding the control range and leading to an increase in side reactions. On the other hand, excessively high temperatures can also pose safety hazards. Some organic solvents (such as methanol) are flammable and may cause fires or even explosions at high temperatures. Furthermore, high temperatures can damage reaction equipment and shorten its lifespan.

[0003] Patent CN 218248590 U discloses a cooling device for an o-chlorobenzonitrile distillation column. It includes a water inlet pipe, a distillation column, a cooling chamber body, an inner box, an inlet pipe, a tray, and a cooler. Support legs are welded to the lower surface of the distillation column, and the inner box is embedded and fixed inside the column. An inlet pipe, penetrating the cooling chamber body and the distillation column, is connected to one outer end face of the inner box. An inlet valve is threaded onto the outer surface of the inlet pipe. The cooling chamber body is formed between the distillation column and the inner box, and a cooler is installed on the inner wall of the cooling chamber body. A water inlet pipe, threaded onto the outer surface of the cooling chamber body, is connected to one outer end face of the cooling chamber body. An outlet pipe, penetrating the distillation column, is connected to one outer end face of the cooling chamber body. A fixing plate is welded to the inner wall of the inner box, and a tray is welded to the inner wall of the inner box above the fixing plate. However, this device still has the following problems:

[0004] 1. During the reaction process, some reactions can cause the temperature inside the reaction tower to rise rapidly. If the cooling effect is not enhanced in time, it will affect the production of reaction products.

[0005] 2. When the cooling medium reaches the middle of the reaction tower, it already carries a lot of heat. If it continues to rise and is discharged from the top outlet, the cooling effect at the top of the reaction tower will decrease. Utility Model Content

[0006] To address the problems existing in the prior art, an adjustable reaction tower cooling device is provided.

[0007] The technical solution adopted by this utility model to solve its technical problem is:

[0008] This utility model proposes an adjustable reaction tower cooling device, including a tower body with an outer shell and an inner layer for containing a cooling medium. The side wall of the inner layer has a first inlet, a second inlet, and a second outlet. One end of the first inlet and the second inlet is connected to the inner layer, and the other end is connected to a medium tank. A pump for supplying the medium is installed in the medium tank, and a temperature measuring component for controlling the opening and closing of the second inlet is installed in the tower body.

[0009] Preferably, the temperature measuring component includes a temperature measuring box, a switch is fixed on one side of the temperature measuring box, a first solenoid valve is provided in the second inlet, the switch is electrically connected to the first solenoid valve, a top rod for controlling the opening and closing of the switch is slidably provided in the temperature measuring box, and a temperature-sensing deformation mechanism for driving the top rod to slide is provided on one side of the top rod.

[0010] Preferably, the temperature measuring box is further provided with a sliding rheostat, which is electrically connected to the pump body.

[0011] Preferably, a slider is slidable on the sliding rheostat, one end of which is connected to the sliding rheostat and the other end is engaged with the push rod.

[0012] Preferably, a partition is provided in the middle of the interlayer, and at least one openable and closable liquid passage is provided on the partition. The second inlet and the second outlet are provided above the partition. An openable and closable first outlet is also provided on one side of the interlayer. The first inlet and the first outlet are provided below the partition.

[0013] Preferably, a second solenoid valve is provided in the first outlet, and the second solenoid valve is electrically connected to the switch.

[0014] Preferably, a gear is rotatably mounted on one side of the housing, and a flap is fixed on one side of the gear. The flap controls the opening and closing of the liquid inlet. A rack that cooperates with the gear is also slidably mounted on the housing, and a power component that drives the rack is connected to one side of the rack.

[0015] Preferably, the power component is an electric actuator, which is electrically connected to the switch.

[0016] Preferably, the temperature-sensing deformation mechanism is an expansion fluid.

[0017] Preferably, the temperature-sensing deformation mechanism is a bimetallic sheet.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] 1. This utility model provides a second inlet and a temperature measuring component inside the reaction tower. The second inlet is connected to the medium box. After the temperature inside the reaction tower rises to a certain level, the temperature measuring component can control the second inlet to open. The second inlet and the first inlet located at the bottom simultaneously input the medium. Since the medium from the first inlet carries a large amount of heat when it reaches the middle of the interlayer, the second inlet, located in the middle of the reaction tower, can input the medium from the middle of the reaction tower, thereby delivering a low-temperature medium to the upper part of the reaction tower. This avoids the medium carrying heat at the bottom from not being able to cool down well after reaching the upper part.

[0020] 2. This utility model is equipped with a partition and a first outlet. The partition has a liquid outlet. When the temperature inside the reactor rises, the liquid outlet on the partition can be closed, dividing the jacket into upper and lower parts. This allows the first inlet and the first outlet to cool the lower half of the reaction tower, while the second inlet and the second outlet cool the upper half. This enables cooling of both the upper and lower parts separately when the temperature is high, preventing the cooling medium at the bottom from carrying heat to the upper and middle parts, which would otherwise result in unsatisfactory cooling of the upper and middle parts.

[0021] 3. This utility model is equipped with a sliding rheostat and a temperature-sensing deformation mechanism. When the interlayer cannot be cooled well even after being divided into two parts, the sliding rheostat in the temperature measuring box will reduce its resistance and increase the current under the deformation action of the temperature-sensing deformation mechanism. The sliding rheostat is connected in series with the pump body in the medium box. As the current increases, the speed of the pump body will increase, thereby driving the medium to flow faster in the interlayer. Attached Figure Description

[0022] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0023] Figure 1 This is a perspective view of the utility model;

[0024] Figure 2 This is a cross-sectional view of the sandwich structure of this utility model;

[0025] Figure 3 This is a cross-sectional view of the flip-plate structure of this utility model;

[0026] Figure 4 yes Figure 3 Schematic diagram of the temperature measuring box structure (expansion fluid);

[0027] Figure 5 yes Figure 3 Schematic diagram of the temperature measuring box structure (bimetallic strip);

[0028] Figure 6 This is a top view of the partition structure of this utility model.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. Tower body; 2. Outer shell; 3. Interlayer; 4. First inlet; 5. Second inlet; 6. Second outlet; 7. Temperature measuring box; 8. Switch; 9. First solenoid valve; 10. Expansion liquid; 11. Baffle; 12. Liquid outlet; 13. Gear; 14. Flip plate; 15. Rack; 16. First outlet; 17. Second solenoid valve; 18. Sliding rheostat; 19. Sliding plate; 20. Bimetallic strip; 21. Electric actuator; 22. Push rod; 23. Heat-conducting plate. Detailed Implementation

[0031] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0032] like Figure 1-6 As shown, this embodiment proposes an adjustable reaction tower cooling device, including a tower body 1, a shell 2, and a jacket 3 for containing a cooling medium. The side wall of the jacket 3 has a first inlet 4, a second inlet 5, and a second outlet 6. The first inlet 4 is located at the bottom of the jacket, the second inlet 5 is located in the middle of the jacket, and the second outlet 6 is located at the top of the jacket. One end of the first inlet 4 and the second inlet 5 are connected to the jacket 3, and the other end is connected to a medium tank. A pump for supplying the medium is installed in the medium tank, and a temperature measuring component for controlling the opening and closing of the second inlet 5 is installed inside the tower body 1.

[0033] During the reaction of materials in the reaction tower, the pump in the medium tank pumps cooling medium from the first inlet 4 into the jacket 3. The cooling medium overflows from the bottom upwards, carrying away the heat in the reaction tower during the overflow process. It flows out from the second outlet 6 and reaches the recovery tank of the recovery medium, thus completing the cooling of the tower body 1.

[0034] The cooling medium is usually water or heat transfer oil.

[0035] After the temperature measuring component detects an increase in temperature inside the tower body 1, it controls the second inlet 5 to open. The pump in the medium tank then supplies medium to both the first inlet 4 and the second inlet 5 simultaneously. The second inlet 5 is located in the middle of the interlayer 3, allowing cooling medium to be input from the middle of the interlayer 3. This replenishes the upper and middle parts of the reaction tower with low-temperature medium, thereby achieving better cooling of the upper and middle parts.

[0036] The temperature measuring assembly includes a temperature measuring box 7, a switch 8 fixed on one side of the temperature measuring box 7, a first solenoid valve 9 installed in the second inlet 5, the switch 8 being electrically connected to the first solenoid valve 9, a top rod 22 that controls the opening and closing of the switch 8 sliding inside the temperature measuring box 7, and a temperature-sensing deformation mechanism that drives the top rod 22 to slide on one side of the top rod 22.

[0037] Switch 8 is specifically a push-button spring switch, which typically consists of a push button, a spring, a mounting base, and conductive contacts. The push button is usually made of plastic or metal and possesses a certain degree of pressing performance and mechanical strength. The spring's function is to allow the button to automatically return to its original position and ensure its elasticity when pressed. The mounting base is used to secure the button and spring, ensuring their positions do not change. The conductive contacts are the crucial part connecting the circuit; pressing the button connects or disconnects the circuit through the contacts, thus achieving the switch's function.

[0038] The bottom of the temperature measuring box 7 is fixed with a heat-conducting plate 23, which can transfer the temperature inside the tower body 1 to the temperature-sensing deformation mechanism.

[0039] The temperature-sensing deformation mechanism can deform when the temperature rises, causing the top rod 22 to slide upward. The top rod 22 will press the switch 8. The switch 8 is a normally closed switch. After the switch 8 is opened, the first solenoid valve 9 will be energized, the second inlet 5 will be opened, and the pump in the medium tank will drive the cooling medium from the second inlet 5 to the jacket 3, and then cool the tower body 1.

[0040] The temperature-sensing deformation mechanism is an expansion fluid 10, which can be a liquid such as kerosene that expands easily when heated.

[0041] The temperature-sensing deformation mechanism is a bimetallic strip 20, which is a composite material made of two different metal (or alloy) sheets tightly bonded together. Its basic principle is based on the different coefficients of thermal expansion of the two metals. When the temperature changes, the metal sheet with the larger coefficient of thermal expansion expands (or contracts) more than the metal sheet with the smaller coefficient of thermal expansion, causing the bimetallic strip to bend and deform, thus driving the push rod 22 to slide up and down.

[0042] The temperature measuring box 7 is also equipped with a sliding rheostat 18, which is electrically connected to the pump body. By changing the resistance of the sliding rheostat 18, the current of the pump body in the medium tank is changed. With the voltage unchanged, the resistance decreases, so the greater the current passing through the pump body, the faster the pump body rotates, and the faster the flow rate of the medium supplied to the first inlet 4 and the second inlet 5, which can remove the heat in the tower body 1 more quickly.

[0043] A slider 19 slides on the sliding rheostat 18. One end of the slider 19 is connected to the sliding rheostat, and the other end is engaged with the push rod 22.

[0044] The top rod 22 has a slot at its upper end, and one end of the slider 19 is locked in the slot. The lifting and lowering of the top rod 22 can drive the slider 19 to lift and lower, thereby changing the resistance of the sliding rheostat 18.

[0045] A partition 11 is provided in the middle of the interlayer 3, which divides the interlayer 3 into upper and lower chambers. At least one openable and closable liquid inlet 12 is provided on the partition 11, and the two chambers are connected through the liquid inlet 12. The second inlet 5 and the second outlet 6 are provided above the partition 11. The interlayer 3 is also provided with an openable and closable first outlet 16 on one side. The first outlet 16 is located at the upper end of the lower chamber, and the first inlet 4 and the first outlet 16 are provided below the partition 11.

[0046] When the liquid outlet 12 is closed, the medium entering through the first inlet 4 flows out through the first outlet 16, and the medium entering through the second inlet 5 flows out through the second outlet 6. This achieves cooling of the lower half of the reaction tower by the first inlet 4 and the first outlet 16, and cooling of the upper half by the second inlet 4 and the second outlet 5. This allows for cooling of both the upper and lower parts at higher temperatures, preventing the cooling medium at the bottom from carrying heat to the upper and middle parts, which would otherwise result in unsatisfactory cooling of the upper and middle parts.

[0047] A second solenoid valve 17 is installed inside the first outlet 16. The second solenoid valve 17 is electrically connected to the switch 8. When the switch 8 is opened, the second solenoid valve 17 also opens, thereby driving the first outlet 16 to open, so that the medium is discharged from the first outlet 16 into the medium recovery box.

[0048] A gear 13 rotates on one side of the outer casing 2, and a flap 14 is fixed on one side of the gear 13. The flap 14 controls the opening and closing of the liquid inlet 12. A rack 15 that cooperates with the gear 13 also slides on the outer casing 2. A power component that drives the rack 15 is connected to one side of the rack 15.

[0049] After the power unit drives the flap 14 to close the liquid outlet 12, the interlayer 3 is divided into upper and lower cavities.

[0050] The power unit is an electric actuator 21, which is fixedly connected to the tower body 1. The electric actuator 21 is electrically connected to the switch 8. When the switch 8 is turned on, the electric actuator drives the flap 14 to rotate, thereby closing the liquid outlet 12.

[0051] Specific work process:

[0052] S1: When the reaction is carried out in the tower body 1 of the reaction tower, the pump in the medium tank is started. The pump sends the cooling medium in the medium tank from the first inlet 4 into the jacket 3, and then overflows from the bottom to the top of the jacket 3. After taking away the heat in the tower body 1, it is discharged from the second outlet 6 and the cooling medium enters the medium recovery tank.

[0053] S2: When the temperature inside the tower body 1 rises, the temperature-sensing deformation mechanism detects the temperature change and drives the top rod 22 to slide upward. The top rod 22 presses the switch 8, the second inlet 5 opens, and the second inlet 5 inputs the medium in the middle to cool the tower body.

[0054] S3: After switch 8 is turned on, electric push rod 21 is simultaneously energized, pulling rack 15 to slide. The rack drives gear 13 to rotate, and gear 13 drives flap 14 to close the liquid outlet 12, dividing the interlayer 3 into upper and lower chambers.

[0055] S4: When the electric actuator 21 is energized and the second inlet 5 is opened, the first outlet 16 is opened simultaneously. The medium entering through the first inlet 4 flows out through the first outlet 16, and the medium entering through the second inlet 5 flows out through the second outlet 6, thus completing the separate heat dissipation of the upper and lower parts of the tower body 1 and improving the heat dissipation effect.

[0056] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An adjustable reaction tower cooling device, comprising a tower body (1), characterized in that, The tower body (1) has an outer shell (2), the outer shell (2) has a jacket (3) for containing cooling medium, the side wall of the jacket (3) has a first inlet (4), a second inlet (5) and a second outlet (6), one end of the first inlet (4) and the second inlet (5) are connected to the jacket (3), and the other end is connected to a medium box, a pump body for supplying medium is provided in the medium box, and a temperature measuring component for controlling the opening and closing of the second inlet (5) is provided in the tower body (1).

2. The adjustable reaction tower cooling device according to claim 1, characterized in that, The temperature measuring component includes a temperature measuring box (7), a switch (8) is fixed on one side of the temperature measuring box (7), a first solenoid valve (9) is provided in the second inlet (5), the switch (8) is electrically connected to the first solenoid valve (9), a top rod (22) that controls the opening and closing of the switch (8) is slidably provided in the temperature measuring box (7), and a temperature-sensing deformation mechanism that drives the top rod (22) to slide is provided on one side of the top rod (22).

3. The adjustable reaction tower cooling device according to claim 2, characterized in that, The temperature measuring box (7) is also equipped with a sliding rheostat (18), which is electrically connected to the pump body.

4. The adjustable reaction tower cooling device according to claim 3, characterized in that, A slider (19) slides on the sliding rheostat (18). One end of the slider (19) is connected to the sliding rheostat, and the other end is engaged with the push rod (22).

5. The adjustable reaction tower cooling device according to claim 2, characterized in that, A partition (11) is provided in the middle of the interlayer (3), and at least one openable and closable liquid inlet (12) is provided on the partition (11). The second inlet (5) and the second outlet (6) are provided above the partition (11). A first outlet (16) that can be opened and closed is also provided on one side of the interlayer (3). The first inlet (4) and the first outlet (16) are provided below the partition (11).

6. The adjustable reaction tower cooling device according to claim 5, characterized in that, A second solenoid valve (17) is provided in the first outlet (16), and the second solenoid valve (17) is electrically connected to the switch (8).

7. The adjustable reaction tower cooling device according to claim 6, characterized in that, A gear (13) rotates on one side of the outer shell (2), and a flap (14) is fixed on one side of the gear (13). The flap (14) controls the opening and closing of the liquid inlet (12). A rack (15) that cooperates with the gear (13) also slides on the outer shell (2). A power component that drives the rack (15) is connected to one side of the rack (15).

8. The adjustable reaction tower cooling device according to claim 7, characterized in that, The power component is an electric actuator (21), which is electrically connected to the switch (8).

9. The adjustable reaction tower cooling device according to claim 2, characterized in that, The temperature-sensing deformation mechanism is an expansion fluid (10).

10. The adjustable reaction tower cooling device according to claim 2, characterized in that, The temperature-sensitive deformation mechanism is a bimetallic sheet (20).

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