Aluminum oxide cooling system

Abstract

The utility model belongs to the technical field of aluminum oxide production, and particularly relates to an aluminum oxide cooling system which comprises a decomposing tank, a plate heat exchanger I and a plate heat exchanger II, the plate heat exchanger I and the plate heat exchanger II are arranged below the decomposing tank, a plurality of ports are arranged on the plate heat exchanger I and the plate heat exchanger II, and the decomposing tank is connected with the plate heat exchanger I through a pipeline. A drain pipe is arranged at one port of the plate heat exchanger I, a water inlet pipe is arranged at one port of the plate heat exchanger II, and the plate heat exchanger I and the plate heat exchanger II are connected through a plurality of pipelines. The plate heat exchanger I cools aluminum oxide for the first time, the aluminum oxide enters the plate heat exchanger II from the plate heat exchanger I to be cooled for the second time, the cooling effect is obvious, and connection between the plate heat exchangers is stable.

Description

Technical Field

[0001] The utility model relates to the technical field of aluminum oxide production, in particular to an aluminum oxide cooling system. Background Art

[0002] Alumina needs to be cooled in the decomposition tank during the decomposition process. The cooling effect directly affects the decomposition rate of alumina and the output of alumina.

[0003] In the prior art, a plate heat exchanger is often used to cool alumina. However, the power of the normal plate heat exchanger is low and the heat exchange effect is not obvious. The plate heat exchanger can only be redesigned to reduce the temperature of the cold water or increase the flow of the cold water. However, these methods require changing the rated current or adding other structures. They are prone to damage and leakage during use, which brings great safety hazards to on-site production. Utility Model Content

[0004] In view of the technical problems existing in the background technology, the purpose of the utility model is to provide an alumina cooling system, which does not need to change the structure of the plate heat exchanger. By connecting two plate heat exchangers, it can reduce production costs while protecting the safety of the site.

[0005] In order to achieve the above purpose, the technical solution provided by the utility model is:

[0006] An aluminum oxide cooling system comprises a decomposition tank and a plate heat exchanger I and a plate heat exchanger II arranged below the decomposition tank, wherein the plate heat exchanger I and the plate heat exchanger II are provided with a plurality of ports, the decomposition tank is connected to the plate heat exchanger I through a pipeline, a port of the plate heat exchanger I is provided with a drain pipe, a port of the plate heat exchanger II is provided with a water inlet pipe, and the plate heat exchanger I and the plate heat exchanger II are connected through a plurality of pipelines.

[0007] Preferably, the plate heat exchanger I is provided with a hot channel I, a hot channel II, a cold channel I and a cold channel II, and the plate heat exchanger II is provided with a hot channel III, a hot channel IV, a cold channel III and a cold channel IV.

[0008] Preferably, the pipeline includes tube I, tube II, tube III and tube IV, one end of tube I extends into the decomposition tank, and the other end is connected to the hot channel I.

[0009] Preferably, one end of tube II is connected to heat channel II, and the other end is connected to heat channel III.

[0010] Preferably, the drain pipe is connected to the cold channel I, and the water inlet pipe is connected to the cold channel IV.

[0011] Preferably, one end of tube III is connected to the heat channel IV, and the other end is connected to the decomposition tank.

[0012] Preferably, one end of tube IV is connected to cold channel II, and the other end is connected to cold channel III.

[0013] Preferably, a support assembly is provided between pipe I and the drain pipe, and a support assembly is also provided between pipe II and pipe IV.

[0014] Preferably, the support assembly includes an upper support plate and a lower support plate, the bottom of the lower support plate is provided with a support foot, locking plates I are provided on both sides of the upper support plate, and locking plates II are provided on both sides of the lower support plate, threaded holes I are provided on the lock plate I, and threaded holes II are provided on the lock plate II, and the lock plates I and II are connected by bolts.

[0015] Preferably, the upper support plate is provided with arc-shaped through hole I and arc-shaped through hole II, the lower support plate is provided with arc-shaped through hole III and arc-shaped through hole IV, the arc-shaped through hole I and arc-shaped through hole III are aligned, and the arc-shaped through hole II and arc-shaped through hole IV are aligned.

[0016] The utility model has the following advantages and beneficial effects:

[0017] 1. In the utility model, hot alumina enters the plate heat exchanger I from the tube I, the plate heat exchanger I cools the alumina for the first time, and the alumina then enters the plate heat exchanger II from the plate heat exchanger I for a second cooling, the cooling effect is obvious, and the connection between the plate heat exchangers is relatively stable.

[0018] 2. In the present invention, since the temperature of alumina is relatively high and the pipe is made of hard material, when alumina flows in the pipe, it will cause the pipe to vibrate, thereby causing damage to the connection point. A support assembly is designed to support the upper end of the pipe to prevent the pipe from vibrating.

[0019] 3. The utility model has a simple structure and is easy to operate, and is convenient for cooling alumina. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A three-dimensional diagram of an aluminum oxide cooling system provided by the utility model;

[0021] Figure 2 A schematic diagram of the structure of a plate heat exchanger I of an alumina cooling system provided by the utility model;

[0022] Figure 3 A schematic diagram of the structure of a plate heat exchanger II of an alumina cooling system provided by the utility model;

[0023] Figure 4 A schematic diagram of system connection of an alumina cooling system provided by the utility model;

[0024] Figure 5 A schematic diagram of the structure of a support component of an alumina cooling system provided by the utility model;

[0025] Figure 6 A schematic diagram of the structure of a lower support plate of an alumina cooling system provided by the utility model;

[0026] Figure 7 A schematic diagram of the structure of an upper support plate of an alumina cooling system provided by the utility model;

[0027] Icons: 1-plate heat exchanger Ⅰ, 101-hot channel Ⅰ, 102-hot channel Ⅱ, 103-cold channel Ⅰ, 104-cold channel Ⅱ, 2-plate heat exchanger Ⅱ, 201-hot channel Ⅲ, 202-hot channel Ⅳ, 203-cold channel Ⅲ, 204-cold channel Ⅳ, 3-tube Ⅰ, 4-tube Ⅱ, 41-suction pump, 5-tube Ⅲ, 6-water inlet pipe, 7-tube Ⅳ, 8-drain pipe, 9-support assembly, 91-lower support plate, 9101-support foot, 9102-arc through hole Ⅰ, 9103-arc through hole Ⅱ, 9104-locking plate Ⅰ, 9105-threaded hole Ⅰ, 92-upper support plate, 9201-arc through hole Ⅲ, 9202-arc through hole Ⅳ, 9203-locking plate Ⅱ, 9204-threaded hole Ⅱ, 93-bolt, 11-decomposition groove. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments.

[0029] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. 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.

[0030] Example

[0031] like Figure 1-4 As shown, an alumina cooling system includes a decomposition tank 11 and a plate heat exchanger Ⅰ1 and a plate heat exchanger Ⅱ2 arranged below the decomposition tank 11, a plurality of ports are arranged on the plate heat exchanger Ⅰ1 and the plate heat exchanger Ⅱ2, the decomposition tank 11 is connected to the plate heat exchanger Ⅰ1 through a pipeline, a port of the plate heat exchanger Ⅰ1 is provided with a drain pipe 8, a port of the plate heat exchanger Ⅱ2 is provided with a water inlet pipe 6, and the plate heat exchanger Ⅰ1 and the plate heat exchanger Ⅱ2 are connected through a plurality of pipelines.

[0032] like Figure 1-3 As shown, the plate heat exchanger Ⅰ1 is provided with a hot channel Ⅰ101, a hot channel Ⅱ102, a cold channel Ⅰ103 and a cold channel Ⅱ104, the hot channel Ⅰ101 and the hot channel Ⅱ102 are arranged in parallel in the vertical direction, and the cold channel Ⅰ103 and the cold channel Ⅱ104 are also arranged in parallel in the vertical direction, and the plate heat exchanger Ⅱ2 is provided with a hot channel Ⅲ201, a hot channel Ⅳ202, a cold channel Ⅲ203 and a cold channel Ⅳ204, and the hot channel Ⅲ201 and the hot channel Ⅳ202 are arranged in parallel. They are arranged in parallel in the vertical direction, and cold channels III 203 and cold channels IV 204 are also arranged in parallel in the vertical direction. The hot solution always flows in from the hot channel at the upper end (hot channel I 101 and hot channel III 201), and then flows out from the hot channel at the lower end (hot channel II 102 and hot channel IV 202). The cooling liquid always flows in from the cold channel at the lower end (cold channel II 104 and cold channel IV 204), and flows out from the cold channel at the upper end (cold channel I 103 and cold channel III 203).

[0033] like Figure 1-4 As shown, the pipeline includes pipe I3, pipe II4, pipe III5 and pipe IV7. One end of pipe I3 ​​extends into the decomposition tank 11, and the other end is connected to the hot channel I101. Pipe I3 ​​adopts the siphon principle to extract the high-temperature alumina in the decomposition tank 11 into the plate heat exchanger I1. One end of pipe II4 is connected to the hot channel II102, and the other end is connected to the hot channel III201. Pipe II4 is also connected to a pumping pump 41 to extract alumina from the plate heat exchanger I1 to the plate heat exchanger II2. The high-temperature alumina enters from the hot channel I101 of the plate heat exchanger I1, and flows out from the hot channel II102 of the plate heat exchanger I1 to the plate heat exchanger II2 after cooling. One end of pipe III5 is connected to the hot channel IV202, and the other end is connected to the decomposition tank 11. After secondary cooling, the high-temperature alumina in the plate heat exchanger II2 flows back to the decomposition tank 11 from the plate heat exchanger II2.

[0034] like Figure 1-4As shown, the drain pipe 8 is connected to the cold channel I103, the water inlet pipe 6 is connected to the cold channel IV204, the water inlet pipe 6 is connected to the plate heat exchanger II2, one end of the pipe IV7 is connected to the cold channel II104, and the other end is connected to the cold channel III203, the coolant of the plate heat exchanger I1 and the plate heat exchanger II2 is connected through the pipe IV7, the water inlet pipe 6 first passes the coolant into the plate heat exchanger II2, the coolant in the plate heat exchanger II2 flows into the plate heat exchanger I1, and finally flows out of the plate heat exchanger I1. When the new coolant enters the plate heat exchanger II2, the temperature is the lowest, and The high-temperature alumina has the highest temperature in plate heat exchanger Ⅰ1. In plate heat exchanger Ⅰ1, the high-temperature alumina and the coolant exchange heat. When the high-temperature alumina enters plate heat exchanger Ⅱ2 from plate heat exchanger Ⅰ1, it always exchanges heat with the coolant with the lowest temperature. At the same time, the exchanged coolant is discharged from plate heat exchanger Ⅰ1, which increases the cooling efficiency. The alumina with the highest temperature and the coolant exchange heat in plate heat exchanger Ⅰ1, and the alumina after the initial cooling and the coolant with the lowest temperature are in plate heat exchanger Ⅱ2, which is convenient for cooling the alumina, and the cooling process is efficient and reliable.

[0035] like Figure 1 , 5 As shown in , 6 and 7, since the flow of alumina and coolant in the pipeline is large and has a certain temperature, the pipeline is made of hard material, a support assembly 9 is arranged between pipe Ⅰ3 and drain pipe 8, and a support assembly 9 is also arranged between pipe Ⅱ4 and pipe Ⅳ7 to prevent the pipeline from vibrating during heat exchange and causing damage to the connection point between the pipeline and the plate heat exchanger. The support assembly 9 includes an upper support plate 92 and a lower support plate 91. A support foot 9101 is arranged at the bottom of the lower support plate 91, and the support foot 9101 is placed on the ground. Lock plates Ⅰ9104 are arranged on both sides of the lower support plate 91, and lock plates Ⅱ9203 are arranged on both sides of the upper support plate 92. The lock plate Ⅰ9104 is provided with a threaded hole Ⅰ9105, and the lock plate Ⅱ9203 is provided with a threaded hole Ⅱ9204. Ⅰ9104 and locking plate Ⅱ9203 are connected by bolts 93, arc-shaped through holes Ⅰ9102 and arc-shaped through holes Ⅱ9103 are provided on the lower support plate 91, arc-shaped through holes Ⅲ9201 and arc-shaped through holes Ⅳ9202 are provided on the upper support plate 92, arc-shaped through holes Ⅰ9102 and arc-shaped through holes Ⅲ9201 are aligned, arc-shaped through holes Ⅱ9103 and arc-shaped through holes Ⅳ9202 are aligned, the upper support plate 92 and the lower support plate 91 are buckled on the surface of the pipeline, one pipeline is placed in the arc-shaped through holes Ⅰ9102 and arc-shaped through holes Ⅲ9201, and the other pipeline is placed in the arc-shaped through holes Ⅱ9103 and arc-shaped through holes Ⅳ9202, and bolts 93 are screwed into the locking plates Ⅰ9104 and Ⅱ9203 to support the pipelines and increase the overall stability.

[0036] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various changes and modifications. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An alumina cooling system, comprising a decomposition tank and a plate heat exchanger I and a plate heat exchanger II arranged below the decomposition tank, wherein the plate heat exchanger I and the plate heat exchanger II are provided with a plurality of ports, characterized in that: The decomposition tank is connected to the plate heat exchanger I through a pipeline, a port of the plate heat exchanger I is provided with a drain pipe, a port of the plate heat exchanger II is provided with a water inlet pipe, and the plate heat exchanger I and the plate heat exchanger II are connected through several pipelines.

2. The aluminum oxide cooling system according to claim 1, characterized in that: The plate heat exchanger I is provided with a hot channel I, a hot channel II, a cold channel I and a cold channel II, and the plate heat exchanger II is provided with a hot channel III, a hot channel IV, a cold channel III and a cold channel IV.

3. The aluminum oxide cooling system according to claim 2, characterized in that: The pipeline includes pipe I, pipe II, pipe III and pipe IV. One end of pipe I extends into the decomposition tank, and the other end is connected to the hot channel I.

4. The aluminum oxide cooling system according to claim 3, characterized in that: One end of the tube II is connected to the heat channel II, and the other end is connected to the heat channel III.

5. The aluminum oxide cooling system according to claim 3, characterized in that: The drainage pipe is connected to the cold channel I, and the water inlet pipe is connected to the cold channel IV.

6. The aluminum oxide cooling system according to claim 3, characterized in that: One end of the tube III is connected to the hot channel IV, and the other end is connected to the decomposition tank.

7. The aluminum oxide cooling system according to claim 3, characterized in that: One end of the tube IV is connected to the cold channel II, and the other end is connected to the cold channel III.

8. The aluminum oxide cooling system according to claim 3, characterized in that: A support assembly is provided between the pipe I and the drainage pipe, and a support assembly is also provided between the pipe II and the pipe IV.

9. The aluminum oxide cooling system according to claim 8, characterized in that: The support assembly includes an upper support plate and a lower support plate, the bottom of the lower support plate is provided with a support foot, locking plates I are provided on both sides of the lower support plate, and locking plates II are provided on both sides of the upper support plate. Threaded holes I are provided on the locking plate I, and threaded holes II are provided on the locking plate II. The locking plates I and II are connected by bolts.

10. The aluminum oxide cooling system according to claim 9, characterized in that: The lower support plate is provided with an arc-shaped through hole I and an arc-shaped through hole II, and the upper support plate is provided with an arc-shaped through hole III and an arc-shaped through hole IV. The arc-shaped through hole I and the arc-shaped through hole III are aligned, and the arc-shaped through hole II and the arc-shaped through hole IV are aligned.

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