Lithium precipitation mother liquor heat comprehensive utilization device

Abstract

The utility model discloses a lithium precipitation mother liquor heat comprehensive utilization device, which relates to the technical field of lithium precipitation mother liquor evaporation and concentration and comprises a heat insulation box, a supporting block is fixedly connected to the inner bottom surface of the heat insulation box, a preheating storage box is fixedly connected to the upper surface of the supporting block, and a liquid inlet pipe is arranged on the upper surface of the preheating storage box. An air pump is mounted on the upper surface of the heat treatment box; a first air pipe is arranged at the output end of the air pump; an exhaust pipe is mounted on the upper surface of the heat insulation box; the liquid inlet pipe is arranged in the exhaust pipe; through the arrangement of the heat insulation box, the preheating storage box, the air pump, the first air pipe and the exhaust pipe, the initial temperature is increased when mother liquor is heated in the heat treatment box subsequently, energy needed by heating is reduced, and the purposes of improving the energy utilization rate and reducing the production cost are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of evaporation and concentration of lithium precipitation mother liquor, and specifically relates to a device for comprehensive utilization of heat of lithium precipitation mother liquor. Background Technique

[0002] At present, when processing lithium ore to dissolve lithium, after solid-liquid separation and precipitation, a lithium precipitation mother liquor is formed. Then, through evaporation and concentration, the lithium content in the lithium precipitation mother liquor is further concentrated for subsequent extraction and use. During the evaporation and concentration of the lithium precipitation mother liquor, a large amount of heat is generated. If the steam carrying heat is directly discharged, it will cause heat loss, resulting in reduced energy utilization rate and increased production cost. In order to improve the energy utilization rate and reduce the production cost, there is an urgent need for a device for comprehensive utilization of heat of lithium precipitation mother liquor. Content of the Utility Model

[0003] (I) Technical Problems to be Solved

[0004] In view of the deficiencies of the prior art, the utility model provides a device for comprehensive utilization of heat of lithium precipitation mother liquor, which solves the problems raised in the above background technique.

[0005] (II) Technical Solutions

[0006] To achieve the above purposes, the utility model is realized through the following technical solutions: A device for comprehensive utilization of heat of lithium precipitation mother liquor includes a heat insulation box. A support block is fixedly connected to the inner bottom surface of the heat insulation box. The upper surface of the support block is fixedly connected with a preheating storage box. The upper surface of the preheating storage box is provided with a liquid inlet pipe, and the liquid inlet pipe penetrates through the top surfaces of the heat insulation box and the preheating storage box. A liquid pump is installed on the upper surface of the heat insulation box. The liquid inlet end of the liquid pump is provided with a first water pipe, and the liquid outlet end of the liquid pump is provided with a second water pipe. The other end of the second water pipe is connected to a heat treatment box. A heater is installed on the outer surface of the heat treatment box, a heating plate is installed on the inner side surface of the heat treatment box, a discharge valve is installed on the outer surface of the lower part of the heat treatment box, an air pump is installed on the upper surface of the heat treatment box, the output end of the air pump is provided with a first air pipe, the other end of the first air pipe is connected to the bottom surface of the heat insulation box, an exhaust pipe is installed on the upper surface of the heat insulation box, the liquid inlet pipe is arranged in the exhaust pipe, and a leakage pipe is arranged on the lower surface of the other end of the exhaust pipe.

[0007] Optionally, the number of the support blocks is four, and they are distributed in a rectangular array, and the side surface of the preheating storage box is wavy.

[0008] Optionally, a driving motor is installed on the upper surface of the heat treatment box. The output end of the driving motor is fixedly connected with a rotating shaft. Stirring rods are fixedly connected to the outer surface of the rotating shaft.

[0009] Optionally, the number of the fixed rods is three, and four stirring rods are arranged on each fixed rod.

[0010] Optionally, the first water pipe penetrates through the heat insulation box and the preheating storage box, and the lower end of the first water pipe is arranged at the bottom of the preheating storage box. The air inlet pipe of the air pump is arranged in the heat treatment box. The bottom of the first air pipe is connected with a first liquid discharge pipe, and a first electromagnetic valve is installed on the surface of the first liquid discharge pipe.

[0011] Optionally, the bottom surface of the heat insulation box is connected with a second liquid discharge pipe, and a second electromagnetic valve is installed on the surface of the second liquid discharge pipe.

[0012] The utility model provides a device for comprehensively utilizing the heat of lithium precipitation mother liquor, and has the following beneficial effects:

[0013] 1. The heat comprehensive utilization device for lithium precipitation mother liquor enables the heat concentration device for lithium precipitation mother liquor to fully utilize waste heat through the settings of a heat insulation box, a preheating storage box, an air pump, a first air pipe, and an exhaust pipe. During use, the lithium precipitation mother liquor continuously enters the preheating storage box through the liquid inlet pipe at a certain speed. The liquid pump pumps the lithium precipitation mother liquor in the preheating storage box into the second water pipe through the first water pipe, and then enters the heat treatment box through the second water pipe. Under the action of a heater and a heating plate, the lithium precipitation mother liquor in the heat treatment box is evaporated and concentrated. During the heating process, the driving motor drives the rotating shaft and the fixing rod to rotate, so that the stirring rod stirs the mother liquor in the heat treatment box. Stirring can make the substances inside the liquid move more actively, and at the same time reduce the non-uniformity of temperature distribution, making the temperatures of all parts of the liquid more consistent, which plays a role in improving the heating efficiency. When the mother liquor reaches a certain temperature, the generated steam is pumped into the first air pipe by the air pump, and the steam then enters the heat insulation box through the first air pipe. During the movement of the steam in the first air pipe, a small part of the steam condenses into water droplets in the first air pipe. When the water formed by the water droplets reaches a certain amount, the first solenoid valve is opened to discharge the liquid, preventing the water from blocking the first air pipe. Similarly, the second liquid discharge pipe and the second solenoid valve play the same role. After the steam carrying heat enters the heat insulation box, first, the steam rushes towards the bottom surface of the preheating storage box to transfer heat to heat the bottom surface of the preheating storage box, and then the steam diffuses around and contacts the corrugated outer wall of the preheating storage box, thereby transferring heat to the mother liquor in the preheating storage box, playing a role in preheating the mother liquor. Finally, the steam enters the exhaust pipe. Since the liquid inlet pipe is arranged in the exhaust pipe, the steam contacts the outer surface of the liquid inlet pipe for heat exchange. The staff can appropriately adjust the length of the exhaust pipe according to the actual situation. After the steam moves in the exhaust pipe for a period of time, due to long-term contact and heat exchange with the liquid inlet pipe, the steam condenses into water droplets and finally flows out through the drain pipe, and the condensed water is collected. This device discharges the steam into the heat insulation box, making the steam contact the preheating storage box, playing a role in raising the temperature of the preheating storage box. At the same time, the steam contacts the liquid inlet pipe in the exhaust pipe to heat the mother liquor passing through the liquid inlet pipe again, so that the heat is fully utilized. By preheating the mother liquor, the initial temperature when heating the mother liquor in the heat treatment box later is increased, reducing the energy required for heating, achieving the purpose of improving energy utilization efficiency and reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0015] Figure 2 is a structural schematic diagram of the front view section of the present utility model;

[0016] Figure 3 of the present utility model Figure 2Schematic diagram of the structure at position A;

[0017] Figure 4 For the present utility model Figure 2 Schematic diagram of the structure at position B.

[0018] In the figure: 1, heat insulation box; 2, support block; 3, preheating storage box; 4, liquid inlet pipe; 5, liquid pump; 6, first water pipe; 7, second water pipe; 8, heat treatment box; 9, heater; 10, heating plate; 11, drive motor; 12, rotating shaft; 13, fixed rod; 14, stirring rod; 15, discharge valve; 16, air pump; 17, first air pipe; 18, first drain pipe; 181, first solenoid valve; 19, second drain pipe; 191, second solenoid valve; 20, exhaust pipe; 21, leakage pipe. Specific embodiments

[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0020] Embodiment 1

[0021] Please refer to Figures 1 to 4, the present utility model provides a technical solution: a device for comprehensively utilizing the heat of lithium precipitation mother liquor, including a heat insulation box 1. A support block 2 is fixedly connected to the inner bottom surface of the heat insulation box 1. The upper surface of the support block 2 is fixedly connected to a preheating storage box 3. The number of support blocks 2 is four and they are distributed in a rectangular array. The side surface of the preheating storage box 3 is wavy. A liquid inlet pipe 4 is arranged on the upper surface of the preheating storage box 3. The liquid inlet pipe 4 penetrates through the top surfaces of the heat insulation box 1 and the preheating storage box 3. A liquid pump 5 is installed on the upper surface of the heat insulation box 1. A first water pipe 6 is arranged at the liquid inlet end of the liquid pump 5. A second water pipe 7 is arranged at the liquid outlet end of the liquid pump 5. The other end of the second water pipe 7 is connected to a heat treatment box 8. A driving motor 11 is installed on the upper surface of the heat treatment box 8. The output end of the driving motor 11 is fixedly connected to a rotating shaft 12. A fixing rod 13 is fixedly connected to the outer surface of the rotating shaft 12. Stirring rods 14 are fixedly connected to the outer surface of the fixing rod 13. The number of fixing rods 13 is three, and four stirring rods 14 are arranged on each fixing rod 13. A heater 9 is installed on the outer surface of the heat treatment box 8. A heating plate 10 is installed on the inner side surface of the heat treatment box 8. A discharge valve 15 is installed on the outer surface of the lower part of the heat treatment box 8. An air pump 16 is installed on the upper surface of the heat treatment box 8. A first air pipe 17 is arranged at the output end of the air pump 16. The first water pipe 6 penetrates through the heat insulation box 1 and the preheating storage box 3, and the lower end of the first water pipe 6 is arranged at the bottom of the preheating storage box 3. The intake pipe of the air pump 16 is arranged inside the heat treatment box 8. The bottom of the first air pipe 17 is connected to a first drain pipe 18. A first solenoid valve 181 is installed on the surface of the first drain pipe 18. The other end of the first air pipe 17 is connected to the bottom surface of the heat insulation box 1. A second drain pipe 19 is connected to the bottom surface of the heat insulation box 1. A second solenoid valve 191 is installed on the surface of the second drain pipe 19. An exhaust pipe 20 is installed on the upper surface of the heat insulation box 1. The liquid inlet pipe 4 is arranged inside the exhaust pipe 20. A leak pipe 21 is arranged on the lower surface of the other end of the exhaust pipe 20.

[0022] In order to achieve the purpose of improving energy utilization rate and reducing production costs, during use, the lithium precipitation mother liquor continuously enters the preheating storage tank 3 through the liquid inlet pipe 4 at a certain speed. The liquid pump 5 pumps the lithium precipitation mother liquor in the preheating storage tank 3 into the second water pipe 7 through the first water pipe 6, and then enters the heat treatment tank 8 through the second water pipe 7. Under the action of the heater 9 and the heating plate 10, the lithium precipitation mother liquor in the heat treatment tank 8 is evaporated and concentrated. During the heating process, the driving motor 11 drives the rotating shaft 12 and the fixed rod 13 to rotate, so that the stirring rod 14 stirs the mother liquor in the heat treatment tank 8. Through stirring, the substances inside the liquid can move more actively, and at the same time, the non-uniformity of temperature distribution is reduced, making the temperature of each part of the liquid more consistent, which plays a role in improving the heating efficiency. When the mother liquor reaches a certain temperature, the generated steam is pumped into the first air pipe 17 under the action of the air pump 16. The steam then enters the heat insulation box 1 through the first air pipe 17. During the movement of the steam in the first air pipe 17, a small part of the steam condenses into water droplets in the first air pipe 17. When the water formed by the water droplets reaches a certain amount, the first electromagnetic valve 181 is opened to discharge the liquid, avoiding the blockage of the first air pipe 17 by water. Similarly, the second drain pipe 19 and the second electromagnetic valve 191 play the same role. After the steam carrying heat enters the heat insulation box 1, first, the steam rushes towards the bottom surface of the preheating storage tank 3 to conduct heat transfer heating on the bottom surface of the preheating storage tank 3, and then the steam diffuses around and contacts the corrugated outer wall of the preheating storage tank 3, thereby transferring the heat to the mother liquor in the preheating storage tank 3, playing a role in initially heating the mother liquor. Finally, the steam enters the exhaust pipe 20. Since the liquid inlet pipe 4 is arranged in the exhaust pipe 20, the steam contacts the outer surface of the liquid inlet pipe 4 for heat exchange. According to the actual situation, the staff can appropriately adjust the length of the exhaust pipe 20. After the steam moves in the exhaust pipe 20 for a period of time, due to long-term contact and heat exchange with the liquid inlet pipe 4, the steam condenses into water droplets, and finally flows out through the drain pipe 21, and the condensed water is collected. This device discharges the steam into the heat insulation box 1, making the steam contact the preheating storage tank 3, playing a role in raising the temperature of the preheating storage tank 3. At the same time, the steam contacts the liquid inlet pipe 4 in the exhaust pipe 20 to heat the mother liquor passing through the liquid inlet pipe 4 again, so that the heat is fully utilized. By preheating the mother liquor, the initial temperature when heating the mother liquor in the heat treatment tank 8 subsequently is increased, reducing the energy required for heating, and achieving the purpose of improving energy utilization rate and reducing production costs.

[0023] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. A device for comprehensively utilizing the heat of lithium precipitation mother liquor, comprising a heat insulation box (1), characterized in that: A support block (2) is fixedly connected to the inner bottom surface of the heat insulation box (1). The upper surface of the support block (2) is fixedly connected to a preheating storage box (3). A liquid inlet pipe (4) is arranged on the upper surface of the preheating storage box (3). The liquid inlet pipe (4) penetrates through the top surfaces of the heat insulation box (1) and the preheating storage box (3). A liquid pump (5) is installed on the upper surface of the heat insulation box (1). The liquid inlet end of the liquid pump (5) is provided with a first water pipe (6). The liquid outlet end of the liquid pump (5) is provided with a second water pipe (7). The other end of the second water pipe (7) is connected to a heat treatment box (8). A heater (9) is installed on the outer surface of the heat treatment box (8). A heating plate (10) is installed on the inner side surface of the heat treatment box (8). A discharge valve (15) is installed on the outer surface of the lower part of the heat treatment box (8). An air pump (16) is installed on the upper surface of the heat treatment box (8). The output end of the air pump (16) is provided with a first air pipe (17). The other end of the first air pipe (17) is connected to the bottom surface of the heat insulation box (1). An exhaust pipe (20) is installed on the upper surface of the heat insulation box (1). The liquid inlet pipe (4) is arranged inside the exhaust pipe (20). A leakage pipe (21) is arranged on the lower surface of the other end of the exhaust pipe (20).

2. The comprehensive heat utilization device for the lithium precipitation mother liquor according to claim 1, wherein: The number of the support blocks (2) is four, and they are distributed in a rectangular array. The side surface of the preheating storage box (3) is wavy.

3. The comprehensive heat utilization device for the lithium precipitation mother liquor according to claim 1, wherein: A driving motor (11) is installed on the upper surface of the heat treatment box (8). The output end of the driving motor (11) is fixedly connected to a rotating shaft (12). A fixing rod (13) is fixedly connected to the outer surface of the rotating shaft (12). Stirring rods (14) are fixedly connected to the outer surface of the fixing rod (13).

4. A device for comprehensively utilizing the heat of a lithium precipitation mother liquor according to claim 3, characterized in that: The number of the fixing rods (13) is three, and four stirring rods (14) are arranged on each fixing rod (13).

5. The comprehensive heat utilization device for the lithium precipitation mother liquor according to claim 1, characterized in that: The first water pipe (6) penetrates through the heat insulation box (1) and the preheating storage box (3), and the lower end of the first water pipe (6) is arranged at the bottom of the preheating storage box (3). The air inlet pipe of the air pump (16) is arranged inside the heat treatment box (8). The bottom of the first air pipe (17) is connected to a first drain pipe (18). A first solenoid valve (181) is installed on the surface of the first drain pipe (18).

6. The comprehensive heat utilization device for lithium precipitation mother liquor according to claim 1, wherein: A second drain pipe (19) is connected to the bottom surface of the heat insulation box (1). A second solenoid valve (191) is installed on the surface of the second drain pipe (19).

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