Boehmite reaction kettle water circulation cooling system

Abstract

The invention relates to a boehmite reaction kettle water circulation cooling system, and relates to the field of reaction kettle cooling equipment, the boehmite reaction kettle water circulation cooling system comprises a reaction kettle, a preheating tank, a water storage tank with a water inlet and a water outlet, and a heat exchanger, a cooling pipe is arranged in the reaction kettle, one end of the cooling pipe is a first water inlet end, and the other end of the cooling pipe is a first water outlet end; a heating pipe is arranged in the preheating tank, one end of the heating pipe is a second water inlet end, and the other end of the heating pipe is a second water outlet end; the second water inlet end is communicated with the first water outlet end; a water inlet of the water storage tank is communicated with the second water outlet end; the hot water inlet end of the heat exchanger is communicated with the water outlet of the water storage tank, and the cold water outlet end of the heat exchanger is communicated with the first water inlet end of the cooling pipe. The method has the effect of improving the energy utilization efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of reaction kettle cooling equipment, in particular to a boehmite reaction kettle water circulation cooling system. BACKGROUND

[0002] In the field of chemical production, a large amount of heat is generated during the reaction process of the material in the reaction kettle. After the reaction is completed, the reaction kettle is cooled and the subsequent reaction material is preheated, which is crucial for the optimization of the entire production process.

[0003] In the past, in order to cool the reaction kettle, the conventional method is to inject cold water directly around the reaction kettle, and the temperature in the reaction kettle is lowered by heat exchange between the cold water and the reaction kettle wall. Some methods use air cooling equipment to remove heat from the surface of the reaction kettle by forced air flow.

[0004] However, these existing technical means have obvious defects. The direct injection of cold water cooling method can remove heat, but the cold water is usually directly discharged after use, causing a large waste of water resources. The cooling efficiency of the air cooling equipment is relatively low, and it cannot quickly and effectively reduce the temperature of the reaction kettle, resulting in low energy utilization efficiency of the entire production process; therefore, it is an urgent problem to provide a cooling system that can improve energy utilization efficiency. SUMMARY

[0005] In order to improve energy utilization efficiency, the present application provides a boehmite reaction kettle water circulation cooling system.

[0006] The boehmite reaction kettle water circulation cooling system provided by the present application adopts the following technical scheme: A boehmite reaction kettle water circulation cooling system, comprising: a reaction kettle, wherein the reaction kettle is provided with a cooling pipe, one end of the cooling pipe is a first water inlet end, and the other end is a first water outlet end; a preheating tank, wherein the preheating tank is provided with a heating pipe, one end of the heating pipe is a second water inlet end, and the other end is a second water outlet end; the second water inlet end is in communication with the first water outlet end; a water storage tank with a water inlet and a water outlet, wherein the water inlet of the water storage tank is in communication with the second water outlet end; and a heat exchanger, wherein the hot water inlet end of the heat exchanger is in communication with the water outlet of the water storage tank, and the cold water outlet end of the heat exchanger is in communication with the first water inlet end of the cooling pipe.

[0007] By adopting the technical scheme, the water in the water storage tank is cooled by the heat exchanger, and then discharged from the cold water outlet end of the heat exchanger, enters the cooling pipe of the reaction kettle from the first water inlet end of the cooling pipe through the third water pipe, cools the materials in the reaction kettle, and then the heated water is discharged from the first water outlet end of the cooling pipe, enters the heating pipe of the preheating tank from the second water inlet end of the heating pipe through the first water pipe, preheats the materials in the preheating tank, and finally is discharged from the second water outlet end of the heating pipe and enters the water storage tank through the water inlet of the water storage tank through the second water pipe. The system realizes the recycling of water resources, reduces the waste of water resources, and preheats the materials in the preheating tank by using the heat generated by the reaction kettle cooling, without additional heating, thereby improving the energy utilization rate.

[0008] Optionally, the cooling pipe is arranged in a wave shape in the reaction kettle.

[0009] By adopting the technical scheme, the cooling pipe is arranged in a wave shape in the reaction kettle, the contact area of the cooling pipe and the materials in the reaction kettle is increased, the cold water can more fully absorb the heat generated by the reaction of the materials in the reaction kettle, and thus the cooling efficiency of the reaction kettle is improved.

[0010] Optionally, the heating pipe is arranged in a wave shape in the preheating tank.

[0011] By adopting the technical scheme, the contact area of the heating pipe and the materials in the preheating tank is increased, and the heating efficiency is improved.

[0012] Optionally, the heating pipe comprises: a bent pipe section; two straight pipe sections in communication with the bent pipe section, the upper and lower end walls of the preheating tank are respectively provided with one of the straight pipe sections, and the straight pipe sections are rotationally connected to the end walls of the preheating tank about their central axes; and two rotary joints, the rotary joints are located outside the preheating tank, and each of the straight pipe sections is respectively provided with one of the rotary joints away from the bent pipe section; the rotary joint located at the second water inlet end of the heating pipe is in communication with the first water outlet end of the cooling pipe; the rotary joint located at the second water outlet end of the heating pipe is in communication with the water inlet of the water storage tank.

[0013] By adopting the technical scheme, the hot water discharged from the cooling pipe in the reaction kettle can enter the heating pipe through the rotary joint, the water in the heating pipe is discharged to the water storage tank for storage through the rotary joint, and the rotary joint can keep the water pipe connected with the heating pipe stationary when the heating pipe rotates, thereby ensuring the continuity of the rotation of the heating pipe and heating the materials in the preheating tank.

[0014] Optionally, the pipe wall of the heating pipe is fixedly connected with a plurality of heat dissipation fins.

[0015] By adopting the technical scheme, the multiple heat dissipation fins are fixedly connected to the wall of the heating pipe, so that the heat dissipation efficiency is improved, and the heating efficiency of the material in the preheating tank is improved.

[0016] Optionally, the heat dissipation fins are arranged obliquely towards the bottom of the preheating tank.

[0017] By adopting the technical scheme, the heat dissipation fins are arranged obliquely towards the bottom of the preheating tank, so that the material slides downwards along the heat dissipation fins, and the material is prevented from being accumulated on the heat dissipation fins.

[0018] Optionally, the preheating tank further comprises a material lifting assembly, the material lifting assembly comprising: a material lifting ring located in the preheating tank, and the heating pipe is located inside the material lifting ring; and a lifting rod parallel to the straight pipe section, one end of the lifting rod being fixedly connected to the material lifting ring, the other end of the lifting rod being arranged through the top wall of the preheating tank and being slidingly connected to the preheating tank along the length direction of the lifting rod.

[0019] By adopting the technical scheme, when the material lifting ring moves up and down, the material in the preheating tank is stirred up and down, and the uniformity of the material heated is improved.

[0020] Optionally, the material lifting assembly further comprises: a material falling ring coaxially fixedly connected to the inner circumferential ring of the material lifting ring, the material falling ring being arranged obliquely downwards towards the bottom of the preheating tank.

[0021] By adopting the technical scheme, the material falling ring is arranged obliquely downwards towards the bottom of the preheating tank, so that the material overlapped thereon moves in the vertical and horizontal directions under the gravity of the material, and the uniformity of the material heated is further improved.

[0022] Optionally, the preheating tank further comprises a driving assembly, the driving assembly comprising: a motor fixedly connected to the preheating tank; a first gear coaxially fixedly sleeved to the straight pipe section at the second water inlet end; and a second gear engaged with the first gear, and the second gear being connected to the output shaft of the motor, the motor being used to drive the second gear to rotate.

[0023] By adopting the technical scheme, the motor is used to drive the second gear to rotate, the second gear is engaged with the first gear to drive the straight pipe section at the second water inlet end to rotate, and then the heating pipe is driven to rotate, so that the material in the preheating tank is heated, and the heating efficiency of the material is improved.

[0024] Optionally, the driving assembly further comprises: an upper connecting pipe parallel to the lifting rod and fixedly connected with the lifting rod; and a lower connecting pipe parallel to the lifting rod, the upper connecting pipe and the lower connecting pipe being threadedly connected, the motor being a double-head motor, and the lower connecting pipe being connected to another output shaft of the double-head motor.

[0025] By adopting the above technical scheme, since the upper connecting pipe is parallel to the lifting rod and fixedly connected with the lifting rod, the lower connecting pipe is parallel to the lifting rod and threadedly connected with the upper connecting pipe, and the lower connecting pipe is connected to another output shaft of the double-head motor, when the double-head motor drives the lower connecting pipe to reverse rotation, the upper connecting pipe can be driven to move along the length direction of the upper connecting pipe by the transmission effect of the thread connection, and then the lifting rod can be driven to move up and down, so that the material in the preheating tank can be stirred up and down, and the uniformity of the material heating can be improved.

[0026] In summary, the present application has at least one of the following beneficial technical effects: 1. By arranging the water circulation system, the hot water after the reaction kettle is cooled down is used for preheating the material in the preheating tank, and finally the water is returned to the water storage tank for recycling, so that the waste of water resources is reduced, and the energy utilization efficiency is improved. 2. The cooling pipe and the heating pipe are arranged in a wave shape, respectively improving the cooling efficiency of the reaction kettle and the heating efficiency of the preheating tank. 3. The driving assembly drives the heating pipe to rotate and the material lifting assembly to move up and down, so that the material in the preheating tank is heated and stirred, and the uniformity of the material heating is improved. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a schematic diagram of the overall structure of the embodiment of the present application; Figure 2 is a schematic diagram of the structure of the cooling pipe in the embodiment of the present application; Figure 3 is a schematic diagram of the structure of the heating pipe in the embodiment of the present application; Figure 4 is a schematic diagram of the structure of the driving assembly in the embodiment of the present application.

[0028] Explanation of reference signs: 1, reaction kettle; 2, preheating tank; 21, material inlet; 22, plunger; 3, water storage tank; 31, water inlet; 32, water outlet; 33, second water pipe; 4, cooling pipe; 41, first water inlet end; 42, first water outlet end; 5, heating pipe; 51, second water inlet end; 52, second water outlet end; 53, first water pipe; 54, elbow section; 55, straight pipe section; 56, rotary joint; 57, heat dissipation fin; 6, heat exchanger; 61, water pumping pipe; 62, third water pipe; 7, material lifting assembly; 71, material lifting ring; 72, material falling ring; 73, lifting rod; 8, driving assembly; 81, motor; 82, first gear; 83, second gear; 84, upper connecting pipe; 85, lower connecting pipe. DETAILED DESCRIPTION

[0029] The following will be described in detail in combination with the accompanying drawings. Figures 1-4 Further detailed description will be made to the present application.

[0030] The present application discloses a boehmite reaction kettle water circulation cooling and temperature reducing system. Referring to Figure 1 , Figure 2 and Figure 3 , the boehmite reaction kettle water circulation cooling and temperature reducing system comprises a reaction kettle 1, a preheating tank 2, and a water storage tank 3 with a water inlet 31 and a water outlet 32; The reaction kettle 1 is provided with a cooling pipe 4, one end of the cooling pipe 4 being a first water inlet end 41 and the other end being a first water outlet end 42; the first water inlet end 41 and the first water outlet end 42 of the cooling pipe 4 are both fixedly connected to the reaction kettle 1; the reaction process of the material in the reaction kettle 1 will generate heat, and the reaction kettle 1 needs to be cooled after the reaction is completed; When cooling, cold water is introduced into the cooling pipe 4 from the first water inlet end 41, so as to cool the reaction kettle 1; in the process of cooling, the temperature of the cold water rises and the cold water is discharged from the first water outlet end 42; in order to improve the cooling efficiency, the cooling pipe 4 is arranged in a wave shape in the reaction kettle 1; The preheating tank 2 is provided with a heating pipe 5, one end of the heating pipe 5 being a second water inlet end 51 and the other end being a second water outlet end 52; the second water inlet end 51 is communicated with the first water outlet end 42 through a first water pipe 53, and a water pump is connected to the first water pipe 53, so as to pump the water in the cooling pipe 4 to the heating pipe 5; the hot water discharged from the first water outlet end 42 enters the preheating tank 2 from the second water inlet end 51, so as to preheat the preheating tank 2; in order to improve the heating efficiency, the heating pipe 5 is arranged in a wave shape in the preheating tank 2; in the depth direction of the preheating tank 2, the heating pipe 5 is designed in a wave shape; compared with the case that the heating pipe 5 is designed in a straight pipe shape, the wave-shaped heating pipe 5 can effectively increase the contact area of the heating pipe 5 with the material in the preheating tank 2, so that more heat can be transferred to the material in the preheating tank 2, thereby improving the energy utilization efficiency; In the process, the material which needs to be reacted later can be placed in the preheating tank 2 to preheat the material, in order to add and discharge the material, the top wall and the bottom wall of the preheating tank 2 are provided with material ports 21, the plunger 22 is provided in the material port 21 and is screwed with the preheating tank 2, after the plunger 22 is removed, the material can be added or discharged through the material port 21; The water inlet 31 and the water outlet 32 of the water storage tank 3 are provided on the top, the water inlet 31 of the water storage tank 3 is communicated with the second water outlet end 52 of the heating pipe 5 through the second water pipe 33, and the water pump is connected on the second water pipe 33, so as to pump the water in the heating pipe 5 to the water storage tank 3.

[0031] Referring to Figure 2 When the cold water needs to be supplied to the cold water pipe in the reaction kettle 1, the water in the water storage tank 3 can be cooled and supplied to the cold water pipe, for this purpose, the heat exchanger 6 is arranged between the water storage tank 3 and the cold water pipe, the hot water inlet end of the heat exchanger 6 is communicated with the water outlet 32 of the water storage tank 3, specifically, the water pump is arranged in the water storage tank 3, the water pump is connected with the water pumping pipe 61, the water pumping pipe 61 passes through the water outlet 32 of the water storage tank 3 and is communicated with the hot water inlet end of the heat exchanger 6, the cold water outlet end of the heat exchanger 6 is communicated with the first water inlet end 41 of the cooling pipe 4 through the third water pipe 62. In the operation process, the water in the water storage tank 3 enters the heat exchanger 6 to form cold water, and then is discharged from the cold water outlet end and enters the cooling pipe through the third water pipe 62, so as to realize the recycling of water resources and reduce the waste of water resources.

[0032] Referring to Figure 3 The heating pipe 5 comprises the elbow pipe section 54, two straight pipe sections 55 communicated with the elbow pipe section 54 and two rotary joints 56 arranged on the two straight pipe sections 55, the straight pipe section 55 is parallel to the tank depth direction of the preheating tank 2, one straight pipe section 55 is arranged on each of the upper and lower end walls of the preheating tank 2, and the straight pipe section 55 is rotationally connected to the end wall of the preheating tank 2 around the center axis of the straight pipe section 55. The rotary joint 56 is located outside the preheating tank 2, one rotary joint 56 is arranged on each end of the straight pipe section 55 away from the elbow pipe section 54, specifically, the rotary joint 56 located at the second water inlet end 51 of the heating pipe 5 is connected with the straight pipe section 55, the rotary joint 56 located at the second water outlet end 52 of the heating pipe 5 is connected with the straight pipe section 55, through the two rotary joints 56, the first water pipe 53 and the second water pipe 33 can remain stationary during the rotation of the heating pipe 5, so as to ensure the continuity of the rotation of the heating pipe 5.

[0033] The heating pipe 5 can heat the material in the preheating tank 2 during rotation. In order to improve the heating efficiency, a plurality of heat dissipation fins 57 are fixedly connected to the pipe wall of the heating pipe 5. The material of the heat dissipation fins 57 is preferably a material with good heat conduction efficiency. In this embodiment, the material of the heat dissipation fins 57 is preferably copper, that is, the heat dissipation fins 57 are copper sheets, so as to improve the heat dissipation efficiency and thus improve the heating efficiency of the material in the preheating tank 2. The heat dissipation fins 57 are inclined towards the bottom of the preheating tank 2. The material can slide down along the heat dissipation fins 57, so as to prevent the material from accumulating on the heat dissipation fins 57.

[0034] Referring to Figure 4 In some embodiments of the present application, a material lifting assembly 7 is further included. The material lifting assembly 7 includes a material lifting ring 71, a material falling ring 72, and a lifting rod 73. The material lifting ring 71 is horizontally arranged and coaxially located in the preheating tank 2. The material falling ring 72 is coaxially and fixedly connected to the inner periphery of the material lifting ring 71 and is inclined downward towards the bottom of the preheating tank 2. Therefore, when the material is overlapped on the material falling ring 72, the material will move in the vertical and horizontal directions along the material falling ring 72 under the gravity of the material itself, so as to realize the up-down and horizontal stirring of the material in the preheating tank 2. After the material is stirred, the material can be more uniformly contacted with the heating pipe 5, so as to improve the uniformity of the heating process of the material and ensure that the material in the heating tank 2 is uniformly heated. The heating pipe 5 is located inside the material lifting ring 71. The lifting rod 73 is parallel to the straight pipe section 55. One end of the lifting rod 73 is fixedly connected to the material lifting ring 71, and the other end extends above the preheating tank 2 after penetrating the top wall of the preheating tank 2. The lifting rod 73 is slidingly connected to the preheating tank 2 along the length direction of the rod. In this embodiment, three lifting rods 73 are provided, and one lifting rod 73 is correspondingly provided on each side of the material falling ring 72.

[0035] Referring to Figure 4 In some embodiments of the present application, a driving assembly 8 is further included. The driving assembly 8 includes a motor 81, a first gear 82, a second gear 83, an upper connecting pipe 84, and a lower connecting pipe 85. The motor 81 is a double-head motor 81. The housing of the motor 81 is fixedly connected to the preheating tank 2. The two output shafts of the motor 81 are parallel to the straight pipe section 55. The second gear 83 is coaxially and fixedly connected to the output shaft of the motor 81, so as to be driven by the motor 81 to rotate. The second gear 83 is engaged with the first gear 82, and the first gear 82 is coaxially and fixedly sleeved on the straight pipe section 55 at the second water inlet end 51. The motor 81 can drive the first gear 82 and the straight pipe section 55 to rotate by driving the second gear 83, so as to drive the heating pipe 5 to rotate. The upper connecting pipe 84 is parallel to the lifting rod 73 and is fixedly connected with one of the lifting rods 73, the upper connecting pipe 84 is hollow, the lower connecting pipe 85 is parallel to the lifting rod 73, the lower connecting pipe 85 is inserted into the upper connecting pipe 84, and the upper connecting pipe 84 and the lower connecting pipe 85 are screw-connected; the lower connecting pipe 85 is coaxially fixedly connected with the other output shaft of the motor 81, when the motor 81 drives the lower connecting pipe 85 to rotate reversely, the upper connecting pipe 84 and the lifting rod 73 can be driven to move up and down, so that the material lifting assembly 7 can be driven to move up and down, so as to stir the material in the preheating tank 2 up and down, and improve the uniformity of the material heated.

[0036] The implementation principle of the boehmite reaction kettle water circulation cooling system is that after the material in the reaction kettle 1 is reacted, the water in the water storage tank 3 is cooled by the heat exchanger and then enters the cooling pipe 4 to cool the reaction kettle 1; the water in the cooling pipe 4 enters the heating pipe 5 in the preheating tank 2, and the preheating tank 2 stores the material to be entered into the reaction kettle 1 next time, the hot water in the heating pipe 5 can preheat the material in the preheating tank 2, and finally the water in the heating pipe 5 flows into the water storage tank 3 for storage for the next cooling of the reaction kettle 1; under the action of the whole cooling system, the water resources can be reused, and the heat in the reaction kettle 1 is effectively utilized to heat the next batch of materials to be reacted, so that the heat is reused, therefore, the cooling system in the application effectively improves the utilization rate and utilization efficiency of resources.

[0037] The above are preferred embodiments of the application, and do not limit the protection scope of the application, therefore: any equivalent changes made on the structure, shape, principle of the application should be covered in the protection scope of the application.

Claims

1. A boehmite reactor water circulation cooling system, characterized in that, The utility model relates to a kind of reaction kettle and its preheating tank and heat exchanger, including: Reaction kettle (1), cooling pipe (4) is equipped in the reaction kettle (1), and the first water inlet end (41) is one end of the cooling pipe (4), and the first water outlet end (42) is the other end of the cooling pipe (4); Preheating tank (2), heating pipe (5) is equipped in the preheating tank (2), and the second water inlet end (51) is one end of the heating pipe (5), and the second water outlet end (52) is the other end of the heating pipe (5);The second water inlet end (51) is communicated with the first water outlet end (42); Water storage tank (3) with water inlet (31) and water outlet (32), the water inlet (31) of the water storage tank (3) is communicated with the second water outlet end (52);And Heat exchanger (6), hot water inlet end of the heat exchanger (6) is communicated with the water outlet (32) of the water storage tank (3), and cold water outlet end of the heat exchanger (6) is communicated with the first water inlet end (41) of the cooling pipe (4).

2. The boehmite reactor water circulation cooling system according to claim 1, characterized in that, The cooling pipe (4) is arranged in the reaction kettle (1) in the form of a wave.

3. The boehmite reactor water circulation cooling system according to claim 2, characterized in that, The heating pipe (5) is arranged in the preheating tank (2) in the form of a wave.

4. The boehmite reactor water circulation cooling system according to claim 1, characterized in that, The heating pipe (5) includes: Elbow section (54); Two straight pipe sections (55) are arranged in communication with the elbow section (54), the upper and lower two end walls of the preheating tank (2) are each provided with one of the straight pipe sections (55), and the straight pipe sections (55) are rotatably connected to the end walls of the preheating tank (2) about their central axes;And Two rotary joints (56) are located outside the preheating tank (2), and each of the straight pipe sections (55) is provided with one of the rotary joints (56) at an end away from the elbow section (54); The rotary joint (56) located at the second water inlet end (51) of the heating pipe (5) is communicated with the first water outlet end (42) of the cooling pipe (4); The rotary joint (56) located at the second water outlet end (52) of the heating pipe (5) is communicated with the water inlet (31) of the water storage tank (3).

5. The boehmite reactor water circulation cooling system according to claim 4, wherein, A plurality of heat dissipation fins (57) are fixedly connected to the pipe wall of the heating pipe (5).

6. The boehmite reactor water circulation cooling system according to claim 5, wherein The heat dissipation fins (57) are inclined towards the bottom of the preheating tank (2).

7. The boehmite reactor water circulation cooling system according to any one of claims 4-6, characterized in that, It also includes a lifting assembly (7), which includes: Lifting ring (71), the lifting ring (71) is located in the preheating tank (2), and the heating pipe (5) is located inside the lifting ring (71);And Lifting rod (73), the lifting rod (73) is parallel to the straight pipe section (55), one end of the lifting rod (73) is fixedly connected to the lifting ring (71), the other end of the lifting rod (73) is provided through the top wall of the preheating tank (2), and is slidably connected to the preheating tank (2) along the length direction of the rod.

8. The boehmite reactor water circulation cooling system according to claim 7, characterized in that, The lifting assembly (7) further includes: Material falling ring (72), the material falling ring (72) is coaxially fixedly connected to the inner circumferential ring of the lifting ring (71), and the material falling ring (72) is inclined downwardly towards the bottom of the preheating tank (2).

9. The boehmite reactor water circulation cooling system according to claim 8, wherein, It also includes a driving assembly (8), which includes: Motor (81), the motor (81) is fixedly connected to the preheating tank (2). A first gear (82) coaxially fixedly sleeved to a straight pipe section (55) at the second water inlet end (51); and A second gear (83) engaged with the first gear (82), and connected to an output shaft of the motor (81) for driving the second gear (83) to rotate.

10. The boehmite reactor water circulation cooling system according to claim 9, wherein, The driving assembly (8) further comprises: An upper connecting pipe (84) parallel to the lifting rod (73) and fixedly connected with the lifting rod (73); and A lower connecting pipe (85) parallel to the lifting rod (73), the upper connecting pipe (84) and the lower connecting pipe (85) being threadedly connected, the motor (81) being a double-head motor (81), and the lower connecting pipe (85) being connected to another output shaft of the double-head motor (81).

Images