Continuous acidolysis premixing tank cooling device

Abstract

The utility model relates to a continuous acidolysis premixing tank cooling device, which relates to the technical field of titanium dioxide chemical industry, and comprises a premixing tank, a cooling coil pipe is coiled at the bottom of the premixing tank, a cooling jacket covers the outer side of the cooling coil pipe and the peripheral side of the premixing tank, the tail end of the cooling coil pipe is connected with an input port at the lower part of the cooling jacket, and the tail end of the cooling coil pipe is connected with an output port at the lower part of the premixing tank. Cooling water enters the cooling jacket for secondary cooling after being subjected to primary cooling through the cooling coil, so that the cooling of the bottom of the premixing tank is enhanced on the basis of ensuring the cooling strength of the tank body of the premixing tank, materials are prevented from being adhered to the bottom of the premixing tank, and the premixing effect is improved; the cooling coil and the cooling jacket are externally connected with a cooling circulation system, the cooling circulation system comprises a cooling tank set, and after cooling water cools the premixing tank, carried heat energy can be used for heat using equipment.

Description

Technical Field

[0001] The utility model relates to the technical field of titanium dioxide chemical industry, in particular to a continuous acid hydrolysis premixing tank cooling device. Background Art

[0002] The acid hydrolysis premixing process is the main operating step of the continuous acid hydrolysis reaction. The purpose is to mix the sulfuric acid and ilmenite powder involved in the reaction so that the ore powder is infiltrated with sulfuric acid and evenly dispersed in the sulfuric acid. During the acid hydrolysis premixing process, a large amount of heat is released due to the mixing of ore powder and sulfuric acid, which increases the temperature of the premixed material. In order to ensure that the temperature of the premixed material is controlled below the reaction temperature and avoid early reaction, jacket cooling, water cooling and other measures are taken to cool and control the temperature of the premixing tank.

[0003] The cooling device design in the prior art has defects. The jacket does not cool the premixing tank thoroughly, and the bottom of the premixing tank is easily adhered to the material when heated, causing pipeline blockage and the acid hydrolysis reaction to be unable to proceed. At the same time, a large amount of cooling water is discharged after cooling the premixing tank and heating up, resulting in a waste of heat energy. Utility Model Content

[0004] In order to improve the problems of the cooling device in the above-mentioned background technology, the utility model provides a continuous acid hydrolysis premixing tank cooling device.

[0005] The utility model provides a continuous acid hydrolysis premixing tank cooling device adopts the following technical solution:

[0006] A continuous acid hydrolysis premixing tank cooling device comprises a premixing tank, wherein a cooling coil is wound around the bottom of the premixing tank, the outer side of the cooling coil and the surrounding side of the premixing tank are covered with a cooling jacket, the end of the cooling coil is connected to the input port at the bottom of the cooling jacket, and the cooling coil and the cooling jacket are externally connected to a cooling circulation system.

[0007] Preferably, the cooling circulation system includes a cooling tank group, the input end of the cooling tank group is connected to the output port located on the upper part of the cooling jacket through an infusion pipeline, and the output end of the cooling tank group is provided with a liquid pump, which is connected to the front end of the cooling coil through an infusion pipeline, and the liquid pump increases the water pressure.

[0008] Preferably, the cooling tank group includes an energy storage tank and a cooling tank which are arranged in sequence, the energy storage tank and the cooling tank are connected by a pipeline, a three-way valve is provided on the pipeline and an external heat-using device is connected, a radiator is provided on the side of the cooling tank, and the cooling tank is externally connected to a cooling water source.

[0009] Preferably, temperature and pressure sensors are provided in both the cooling tank and the cooling jacket, and the temperature and pressure sensors are electrically connected to a controller provided outside the cooling tank.

[0010] Preferably, a first solenoid valve for controlling the input of cooling water is provided at the front end of the cooling coil, and a second solenoid valve for controlling the output of cooling water is provided at the output port position on the upper part of the cooling jacket.

[0011] Preferably, fins for increasing the heat exchange area are arranged inside the cooling jacket near the premixing tank, thereby increasing the heat exchange area with the side wall of the premixing tank.

[0012] Preferably, the cooling coil is wound into a planar spiral structure or a continuous bending structure to increase the heat exchange area with the bottom of the premixing tank.

[0013] In summary, the utility model has the following beneficial technical effects:

[0014] 1. The utility model adds a cooling coil in the cooling jacket at the bottom of the premixing tank. The cooling water is cooled once by the cooling coil and then enters the cooling jacket for secondary cooling, and flows out from the output port on the upper part of the cooling jacket. On the basis of ensuring the cooling strength of the premixing tank body, the cooling of the bottom of the premixing tank is strengthened, the material at the bottom of the premixing tank is prevented from sticking, and the premixing effect is improved.

[0015] 2. By setting up a cooling circulation system, after the cooling water cools the premixing tank, the heat energy it carries can be used for heat-using equipment, and the temperature control of the premix reaction in the premixing tank is enhanced in conjunction with the temperature and pressure sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of a continuous acid hydrolysis premixing tank cooling device according to an embodiment of the utility model;

[0017] Figure 2 is a side perspective view of a premixing tank according to an embodiment of the present utility model;

[0018] Figure 3 This is a front view of a premixing tank according to an embodiment of the present utility model;

[0019] Figure 4 It is a planar spiral structure diagram of the cooling coil of the embodiment of the utility model;

[0020] Figure 5 It is a continuous bending structure diagram of the cooling coil of the embodiment of the utility model.

[0021] Explanation of the reference numerals: 1. premixing tank; 2. cooling coil; 3. cooling jacket; 4. inlet; 5. cooling circulation system; 6. cooling tank group; 7. liquid infusion pipeline; 8. outlet; 9. liquid pump; 10. energy storage tank; 11. cooling tank; 12. pipeline; 13. three-way valve; 14. heat-using equipment; 15. radiator; 16. cooling water source; 17. temperature and pressure sensor; 18. controller; 19. first solenoid valve; 20. second solenoid valve; 21. fin; 22. bracket. DETAILED DESCRIPTION

[0022] The following combination Figure 1-Figure 5 The utility model is described in further detail.

[0023] The utility model embodiment discloses a continuous acid hydrolysis premixing tank cooling device.

[0024] Reference Figure 2 , Figure 3 A continuous acid hydrolysis premixing tank cooling device includes a premixing tank 1 mounted on a bracket 22, a cooling coil 2 is coiled around the bottom of the premixing tank 1, the outer side of the cooling coil 2 and the surrounding side of the premixing tank 1 are covered with a cooling jacket 3, the end of the cooling coil 2 is connected to an input port 4 at the bottom of the cooling jacket 3, and the cooling coil 2 and the cooling jacket 3 are externally connected to a cooling circulation system 5.

[0025] Reference Figure 1 , Figure 2 The cooling circulation system 5 includes a cooling tank group 6, the input end of the cooling tank group 6 is connected to the output port 8 located at the upper part of the cooling jacket 3 through a liquid infusion pipeline 7, and the output end of the cooling tank group 6 is provided with a liquid pump 9, which is connected to the front end of the cooling coil 2 through the liquid infusion pipeline 7, and the liquid pump 9 increases the water pressure.

[0026] Reference Figure 1 The cooling tank group 6 includes an energy storage tank 10 for storing heated cooling water and a cooling tank 11 for cooling the heated cooling water, which are arranged in sequence. The energy storage tank 10 and the cooling tank 11 are connected by a pipeline 12. A three-way valve 13 is arranged on the pipeline 12. The external end of the three-way valve 13 is connected to an external heat device 14 through the pipeline 12. A radiator 15 is arranged on the side of the cooling tank 11. The radiator 15 dissipates heat for the cooling water in the cooling tank 11. The cooling tank 11 is externally connected to a cooling water source 16 to replenish the cooling water.

[0027] Reference Figure 1 , Figure 2 , Figure 3 A temperature and pressure sensor 17 is provided in the cooling tank 11 and the cooling jacket 3 , and the temperature and pressure sensor 17 is electrically connected to a controller 18 provided outside the cooling tank 11 .

[0028] Reference Figure 1 , Figure 2 A first solenoid valve 19 for controlling the input of cooling water is arranged at the front end of the cooling coil 2, and a second solenoid valve 20 for controlling the output of cooling water is arranged at the output port 8 on the upper part of the cooling jacket 3. Both the first solenoid valve 19 and the second solenoid valve 20 are electrically connected to the controller 18.

[0029] The temperature and pressure sensor 17 detects the cooling water temperature and water pressure in the cooling tank 11 through the sensor probe in the cooling tank 11 to ensure that it is lower than the set standard and meets the use requirements. When it is not lower than the set standard, the radiator 15 is started to dissipate the heat of the cooling water in the cooling tank 11, and the cooling water in the cooling tank 11 is replenished according to the water pressure.

[0030] The temperature and pressure sensor 17 detects the temperature rise and water pressure of the cooling water through the sensor probe in the cooling jacket 3 to ensure that it is lower than the set standard to meet the cooling needs of the premixing tank 1. When it is lower than the set standard, the first solenoid valve 19 and the second solenoid valve 20 are opened to circulate the cooling water.

[0031] Reference Figure 2 A fin 21 for increasing the heat exchange area is arranged on the inner side of the cooling jacket 3 near the premixing tank 1 , thereby increasing the heat exchange area with the side wall of the premixing tank 1 .

[0032] Reference Figure 4 , Figure 5 The cooling coil 2 is wound into a planar spiral structure or a continuous bending structure to increase the heat exchange area with the bottom of the premixing tank 1.

[0033] The implementation principle of a continuous acid hydrolysis premixing tank cooling device according to an embodiment of the utility model is as follows: the cooling coil 2 is coiled around the bottom of the premixing tank 1, and a cooling jacket 3 is attached to the outside of the cooling coil 2 and the periphery of the premixing tank 1. The cooling water first enters the cooling coil 2 to cool the bottom of the premixing tank 1, and then enters the cooling jacket 3 to perform secondary cooling on the entire premixing tank 1. The cooling water after cooling and temperature increase flows out from the output port 8 on the upper part of the cooling jacket 3 and enters the cooling circulation system 5. The heat energy carried by the cooling water after cooling and temperature increase is used for the heat-using equipment 14. The cooling water after cooling and temperature increase re-enters the cooling coil 2 for cooling.

[0034] The above are all preferred embodiments of the present utility model, and are not intended to limit the protection scope of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A continuous acid hydrolysis premixing tank cooling device, characterized in that: The invention comprises a premixing tank (1), wherein a cooling coil (2) is arranged at the bottom of the premixing tank (1), the outer side of the cooling coil (2) and the circumference of the premixing tank (1) are covered with a cooling jacket (3), the end of the cooling coil (2) is connected to an input port (4) at the bottom of the cooling jacket (3), and the cooling coil (2) and the cooling jacket (3) are externally connected to a cooling circulation system (5).

2. A continuous acid hydrolysis premixing tank cooling device according to claim 1, characterized in that: The cooling circulation system (5) comprises a cooling tank group (6), the input end of the cooling tank group (6) being connected to an output port (8) located at the upper part of the cooling jacket (3) via a liquid infusion pipeline (7), and the output end of the cooling tank group (6) being provided with a liquid pump (9), and the liquid pump (9) being connected to the front end of the cooling coil (2) via a liquid infusion pipeline (7).

3. A continuous acid hydrolysis premixing tank cooling device according to claim 2, characterized in that: The cooling tank group (6) comprises an energy storage tank (10) and a cooling tank (11) which are arranged in sequence. The energy storage tank (10) and the cooling tank (11) are connected via a pipeline (12). A three-way valve (13) is provided on the pipeline (12) and is externally connected to a heat-using device (14). A radiator (15) is provided on the side of the cooling tank (11). The cooling tank (11) is externally connected to a cooling water source (16).

4. A continuous acid hydrolysis premixing tank cooling device according to claim 3, characterized in that: A temperature and pressure sensor (17) is disposed in the cooling tank (11) and the cooling jacket (3), and the temperature and pressure sensor (17) is electrically connected to a controller (18) disposed outside the cooling tank (11).

5. A continuous acid hydrolysis premixing tank cooling device according to claim 4, characterized in that: A first solenoid valve (19) for controlling the input of cooling water is provided at the front end of the cooling coil (2), and a second solenoid valve (20) for controlling the output of cooling water is provided at the output port (8) located at the upper part of the cooling jacket (3).

6. A continuous acid hydrolysis premixing tank cooling device according to claim 1, characterized in that: Fins (21) for increasing the heat exchange area are arranged inside the cooling jacket (3) on a side close to the premixing tank (1).

7. A continuous acid hydrolysis premixing tank cooling device according to claim 1, characterized in that: The cooling coil (2) is wound into a planar spiral structure or a continuously bent structure.

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