Air compressor heat dissipation system for lithium carbonate production

Abstract

The utility model relates to lithium carbonate production process technical field, to the problem that the air compressor in the existing air flow mill equipment appears equipment trip and big power consumption because of high temperature, specifically disclose a kind of lithium carbonate production air compressor heat dissipation system, including lithium carbonate storage tank, air flow mill that communicate sequentially, the air flow mill is connected with air pressure system;The air pressure system discharge end is respectively configured with high pressure airflow pipe, preheating pipe, hot air pipe and hot water pipe, the high pressure airflow pipe is connected with the air flow mill, the preheating pipe is connected with the air flow mill's feed pipe and communicates, the hot air pipe and the hot water pipe are connected with adsorbent regeneration process and drying kiln respectively.The utility model discloses lithium carbonate production air compressor heat dissipation system, heat exchange is carried out to the heat source generated by air compressor through multi-tube line, can effectively realize the heat dissipation and heat recycling of air compressor itself, not only reduce air compressor overheating trip, but also can reduce the heat consumption of whole process.

Description

Technical Field

[0001] This utility model relates to the field of lithium carbonate production technology, and more specifically, to a heat dissipation system for an air compressor used in lithium carbonate production. Background Technology

[0002] In the industrial preparation of lithium battery materials, a process involving the crushing and fine grinding of lithium carbonate is involved, typically using an air jet mill to grind the lithium carbonate raw material particles to fine particles with a D97 ≤ 5μm. The lithium carbonate air jet milling process requires an air compressor to provide the pulverizing kinetic energy and control the particle size and precision. Specifically, an air compressor is a device used to compress gas, generating high-pressure air of 0.8-1.2 MPa. This air is accelerated through nozzles and acts on the lithium carbonate raw material particles, causing them to be dry-pulverized through high-speed collision and shearing forces, resulting in a product that meets the fineness and precision requirements of battery-grade lithium carbonate.

[0003] For example, patent CN117247031A proposes a lithium carbonate purification process, which mentions that the high-purity lithium carbonate crystals obtained through the purification process, after drying, air jet milling, and iron removal, can meet the standards for battery-grade lithium carbonate. Furthermore, patent CN222369281U provides a lithium battery processing air jet mill, including an air compressor, a first connecting pipe, an air tank, a second connecting pipe, a first filter, a dryer, a third connecting pipe, a second filter, a fourth connecting pipe, a third filter, a fifth connecting pipe, an air jet mill, a sixth connecting pipe, a cyclone separator, a seventh connecting pipe, a dust collector, an eighth connecting pipe, an air outlet pipe, and a fan. The air compressor provides high-pressure air power to the air jet mill to finely grind the material particles.

[0004] However, in existing lithium carbonate production workshops, during the high-temperature period in summer, the air compressor often trips due to the temperature reaching the set upper limit during operation, which affects the normal operation of the fine grinding section and also causes a huge burden on electricity consumption during the peak electricity consumption period in summer. Utility Model Content

[0005] The purpose of this invention is to solve the problems of equipment shutdown and high power consumption caused by high temperature in the air compressor of existing air jet mill equipment. This application provides a heat dissipation system for air compressors used in lithium carbonate production. By exchanging heat from the heat source generated by the air compressor through multiple pipelines, the system can effectively dissipate heat from the air compressor itself and recover and utilize heat, which not only reduces the air compressor's overheating shutdown but also reduces the overall energy consumption of the process.

[0006] This utility model is achieved through the following technical solution:

[0007] This utility model provides a heat dissipation system for an air compressor used in lithium carbonate production, including a lithium carbonate storage tank and an air jet mill connected in sequence. The air jet mill is connected to an air compressor system. The discharge end of the air compressor system is respectively equipped with a high-pressure airflow pipe, a preheating pipe, a hot air pipe, and a hot water pipe. The high-pressure airflow pipe is connected to the air jet mill, the preheating pipe is connected to the feed pipe of the air jet mill, and the hot air pipe and the hot water pipe are respectively connected to the adsorbent regeneration process and the drying kiln.

[0008] Preferably, the air compressor system includes an air compressor, an air circuit heat exchanger, and a heat storage box connected in sequence, and the preheating pipe is installed at one end near the air compressor system at the top of the heat storage box.

[0009] Preferably, the air circuit heat exchanger is connected to the top of the air compressor via a positive exhaust pipe and a reverse exhaust pipe, the outlet end of the positive exhaust pipe is connected to the air circuit heat exchanger, and the outlet end of the reverse exhaust pipe is connected to the top of the air compressor.

[0010] Preferably, the end of the hot air duct closest to the air compressor system is connected to the heat storage box.

[0011] Preferably, the bottom of the air compressor is also connected to an oil circuit heat exchanger, and the outlet end of the oil circuit heat exchanger is connected to a hot water storage tank.

[0012] Preferably, the oil circuit heat exchanger is connected to the bottom of the air compressor via a positive drain pipe and a reverse return water pipe, and the outlet end of the positive drain pipe is connected to the oil circuit heat exchanger, while the outlet end of the reverse return water pipe is connected to the bottom of the air compressor.

[0013] Preferably, the end of the hot water pipe closest to the air compressor system is inserted into the outlet end of the hot water storage tank.

[0014] Preferably, an adsorption drying tower is provided at one end of the high-pressure airflow pipe near the air compressor, and the adsorption drying tower is connected to the air compressor through a pipeline.

[0015] The technical solution of this utility model has the following beneficial effects:

[0016] The heat dissipation system for air compressors used in lithium carbonate production of this utility model can quickly and efficiently dissipate heat from the air compressor by exchanging heat with the heat source generated by the air compressor through multiple pipelines, thereby reducing the frequency of equipment failures and realizing heat recovery and utilization. This not only reduces the air compressor from overheating and shutting down, but also reduces the heat energy consumption of the entire process. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the heat dissipation system of the air compressor used for lithium carbonate production in Example 1;

[0018] Figure 2 This is a schematic diagram of the air compressor system in Example 1;

[0019] Figure 3 This is a partial structural diagram of the lithium carbonate production system in Example 1.

[0020] Reference numerals: 1-Lithium carbonate storage tank, 2-Air jet mill, 3-Air compressor system, 31-Air compressor, 32-Air circuit heat exchanger, 321-Positive exhaust pipe, 322-Reverse air return pipe, 33-Heat storage box, 34-Oil circuit heat exchanger, 341-Positive drain pipe, 342-Reverse water return pipe, 35-Hot water storage tank, 36-Adsorption drying tower, 4-High pressure airflow pipe, 5-Preheating pipe, 6-Hot air pipe, 7-Hot water pipe, 8-Adsorbent regeneration process, 9-Drying kiln, 10-Separation tank, 11-Bag filter dust collector. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below. Where specific conditions are not specified in the embodiments, they are performed according to conventional conditions or conditions recommended by the manufacturer; where the manufacturers of instruments, equipment, reagents, or raw materials are not specified, they are all conventional products that can be purchased commercially. The following are specific embodiments in conjunction with the accompanying drawings.

[0022] like Figures 1 to 3 As shown, this embodiment provides a cooling system for an air compressor used in lithium carbonate production, including a lithium carbonate storage tank 1 and an air jet mill 2 connected in sequence. The air jet mill 2 is connected to an air compressor system 3. The discharge end of the air compressor system 3 is respectively equipped with a high-pressure airflow pipe 4, a preheating pipe 5, a hot air pipe 6, and a hot water pipe 7. The high-pressure airflow pipe 4 is connected to the air jet mill 2, the preheating pipe 5 is connected to the feed pipe of the air jet mill 2, and the hot air pipe 6 and the hot water pipe 7 are respectively connected to the adsorbent regeneration process 8 and the drying kiln 9. An adsorption drying tower 36 is configured at the end of the high-pressure airflow pipe 4 near the air compressor 31, and the adsorption drying tower 36 is connected to the air compressor 31 through a pipe.

[0023] Since the air jet mill requires compressed air dew point ≤ -40℃, adsorption drying is the only way to meet the standard. Therefore, when the air compressor 31 outputs high-pressure air to the air jet mill 2, it also needs to be used in conjunction with the adsorption drying tower 36. This requires the use of adsorbent. In order to improve the regeneration efficiency of the adsorbent after use, this embodiment uses hot air pipe 6 to apply the hot air in the air compressor system 3 to the adsorbent regeneration process 8, which can realize heat recovery and utilization and improve production efficiency. Lithium carbonate raw material particles are usually obtained by leaching, evaporation crystallization, centrifugal separation and drying. In this embodiment, the drying kiln 9 connected to the hot water pipe 7 refers to the drying kiln 9 used in the production process of the above-mentioned lithium carbonate raw material particles.

[0024] In this embodiment, the air compressor system 3 includes an air compressor 31, an air path heat exchanger 32, and a heat storage box 33 connected in sequence. The preheating pipe 5 is installed at the top of the heat storage box 33 near the air compressor system 3. The air path heat exchanger 32 is connected to the top of the air compressor 31 through a positive exhaust pipe 321 and a reverse air return pipe 322. The outlet end of the positive exhaust pipe 321 is connected to the air path heat exchanger 32, and the outlet end of the reverse air return pipe 322 is connected to the top of the air compressor 31. The hot air pipe 6 is connected to the heat storage box 33 at the end near the air compressor system 3.

[0025] In this embodiment, the bottom of the air compressor 31 is also connected to an oil circuit heat exchanger 34, and the discharge end of the oil circuit heat exchanger 34 is connected to a hot water storage tank 35; the oil circuit heat exchanger 34 and the bottom of the air compressor 31 are connected through a positive drain pipe 341 and a reverse return water pipe 342, and the water outlet end of the positive drain pipe 341 is connected to the oil circuit heat exchanger 34, and the water outlet end of the reverse return water pipe 342 is connected to the bottom of the air compressor 31; the end of the hot water pipe 7 near the air compressor system 3 passes through the discharge end of the hot water storage tank 35.

[0026] Furthermore, in this embodiment, the discharge end of the air jet mill 2 is also connected in sequence to the necessary processing equipment for the lithium carbonate production system, such as the separation tank 10, the bag filter 11, and the finished product packaging equipment, in order to complete the production of battery-grade lithium carbonate.

[0027] The cooling system of the air compressor 31 used in lithium carbonate production can quickly and efficiently dissipate heat from the air compressor 31 by exchanging heat through multiple pipelines, thereby reducing the frequency of equipment failures and realizing heat recovery and utilization. This not only reduces the overheating shutdown of the air compressor 31, but also reduces the heat energy consumption of the entire process.

[0028] It should be noted that the heat dissipation system for air compressors used in lithium carbonate production provided in this utility model and the above embodiments is a solution proposed based on the problems existing in the actual production of lithium carbonate. The name "for lithium carbonate production" indicates that the technical problem that this technical solution wants to solve belongs to the field of lithium carbonate production. However, it can also be selectively used or applied in other chemical production according to the actual situation.

[0029] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A heat dissipation system for an air compressor used in lithium carbonate production, characterized in that, It includes a lithium carbonate storage tank (1) and an air jet mill (2) connected in sequence, wherein the air jet mill (2) is connected to an air compressor system (3); The air compressor system (3) is equipped with a high-pressure airflow pipe (4), a preheating pipe (5), a hot air pipe (6) and a hot water pipe (7) at the discharge end. The high-pressure airflow pipe (4) is connected to the airflow mill (2), the preheating pipe (5) is connected to the feed pipe of the airflow mill (2), and the hot air pipe (6) and the hot water pipe (7) are connected to the adsorbent regeneration process (8) and the drying kiln (9) respectively.

2. The heat dissipation system for an air compressor used in lithium carbonate production according to claim 1, characterized in that, The air compressor system (3) includes an air compressor (31), an air circuit heat exchanger (32) and a heat storage box (33) connected in sequence, and the preheating pipe (5) is installed at the top of the heat storage box (33) near one end of the air compressor system (3).

3. The heat dissipation system for an air compressor used in lithium carbonate production according to claim 2, characterized in that, The air circuit heat exchanger (32) is connected to the top of the air compressor (31) through a positive exhaust pipe (321) and a reverse exhaust pipe (322). The outlet end of the positive exhaust pipe (321) is connected to the air circuit heat exchanger (32), and the outlet end of the reverse exhaust pipe (322) is connected to the top of the air compressor (31).

4. The heat dissipation system for an air compressor used in lithium carbonate production according to claim 2, characterized in that, The end of the hot air duct (6) near the air compressor system (3) is connected to the heat storage box (33).

5. The heat dissipation system for an air compressor used in lithium carbonate production according to claim 2, characterized in that, The bottom of the air compressor (31) is also connected to an oil circuit heat exchanger (34), and the outlet end of the oil circuit heat exchanger (34) is connected to a hot water storage tank (35).

6. The heat dissipation system for an air compressor used in lithium carbonate production according to claim 5, characterized in that, The oil circuit heat exchanger (34) is connected to the bottom of the air compressor (31) through a positive drain pipe (341) and a reverse return water pipe (342), and the outlet end of the positive drain pipe (341) is connected to the oil circuit heat exchanger (34), and the outlet end of the reverse return water pipe (342) is connected to the bottom of the air compressor (31).

7. The heat dissipation system for an air compressor used in lithium carbonate production according to claim 5, characterized in that, The end of the hot water pipe (7) near the air compressor system (3) is inserted into the discharge end of the hot water storage tank (35).

8. The heat dissipation system for an air compressor used in lithium carbonate production according to claim 2, characterized in that, An adsorption drying tower (36) is provided at one end of the high-pressure airflow pipe (4) near the air compressor (31), and the adsorption drying tower (36) is connected to the air compressor (31) through a pipe.

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