Pyrolysis reaction kettle for lithium carbonate production

Abstract

The utility model relates to a pyrolytic reaction kettle for lithium carbonate production, which comprises a pyrolytic reaction kettle body, and the inner side of the pyrolytic reaction kettle body is movably connected with a transmission rod. According to the pyrolytic reaction kettle for lithium carbonate production, through starting of a motor and cooperation of a gear, a transmission rod drives a stirring rod to rotate, and therefore the reaction speed of materials on the inner side of the pyrolytic reaction kettle body can be increased; a semiconductor refrigeration plate is started, liquid in a cooling box of the semiconductor refrigeration plate is refrigerated, a delivery pump is started, the delivery pump pumps the liquid in the cooling box, the pumped liquid is delivered into a cold area cavity through a liquid delivery pipe, and the pyrolytic reaction kettle body is cooled; a return pipe is arranged, so that liquid in the cooling cavity can be circularly used; after the reaction is completed, a water supply pump is started, the water supply pump conveys liquid to the inner side of a transmission rod under the cooperation of a connecting pipe and a rotary joint, and the pyrolysis reaction kettle body can be conveniently cleaned under the cooperation of a spray head.

Description

Technical Field

[0001] The utility model relates to the technical field of pyrolysis reactors, in particular to a pyrolysis reactor for lithium carbonate production. Background Art

[0002] Lithium carbonate is an important lithium compound with the chemical formula Li2CO3. It is a colorless crystal or white powder that is soluble in water. Lithium carbonate has a wide range of uses in industry, mainly in the manufacture of lithium-ion batteries, glass and ceramic industries, medicine and metallurgy. In the manufacture of lithium-ion batteries, lithium carbonate is an important raw material. It is used as a lithium source for the positive electrode material of lithium-ion batteries and is made into positive electrode materials by mixing with other metal salts. In addition, lithium carbonate can also be used to prepare electrolytes and as a lithium salt additive to adjust the performance of batteries. In the glass and ceramic industries, lithium carbonate is used as an important flux. It can lower the melting point of glass and ceramics, improve their solubility and transparency, and make the manufactured glass and ceramics more uniform and transparent. The production of lithium carbonate usually involves pyrolysis reactions, in which the pyrolysis reactor is an important equipment.

[0003] A pyrolysis reactor is a device used to carry out chemical reactions at high temperatures, and is typically used in the production process of converting lithium carbonate into lithium oxide or other lithium compounds.

[0004] The publication number is CN219502675U, which discloses a pyrolysis reactor for lithium carbonate production, comprising a loading assembly, the loading assembly comprising a kettle body and a bracket, an inlet and outlet assembly installed on the kettle body, the inlet and outlet assembly comprising an inlet and an outlet, a stirring assembly installed on the kettle body, the stirring assembly comprising a motor and a rotating rod, a suction assembly installed on one side of the kettle body, the suction assembly comprising a suction pipe and a vacuum pump, and a heat recovery assembly installed on one side of the kettle body. The pyrolysis reactor for lithium carbonate production can absorb carbon dioxide generated by the reaction and steam that is not completely absorbed into the inner side of the suction pipe, and the heat in the carbon dioxide and steam is absorbed by the water in the water tank, thereby reducing heat waste and improving heat utilization. The vacuum pump promptly extracts carbon dioxide outward through the suction pipe, and uses the air pressure in the kettle body to control the lifting and lowering of the piston, thereby improving the steam absorption efficiency and the reaction speed. The pyrolysis reactor is suitable for use in the pyrolysis production of lithium carbonate, but there are still some shortcomings.

[0005] Although the above application documents improve the steam absorption efficiency and the reaction speed, after the pyrolysis reactor is used, some powder materials will inevitably adhere to the inner wall of the pyrolysis reactor, so it is troublesome to clean. At the same time, the existing pyrolysis reactor is not convenient for cooling the reactor body. Therefore, the high-temperature reactor body may cause safety risks to operators and equipment. At the same time, long-term operation at high temperature will accelerate the aging and damage of the equipment and shorten the service life of the equipment. Utility Model Content

[0006] In view of the deficiencies in the prior art, the utility model provides a pyrolysis reactor for lithium carbonate production, which has the advantages of being able to conveniently clean and cool the pyrolysis reactor, and solves the problem that after the pyrolysis reactor is used, some powder materials will inevitably adhere to the inner wall of the pyrolysis reactor, making it troublesome to clean. At the same time, the existing pyrolysis reactor is not convenient for cooling the reactor body, so the high-temperature reactor body may pose a safety risk to operators and equipment. At the same time, long-term operation at high temperature will accelerate the aging and damage of the equipment and shorten the service life of the equipment.

[0007] To achieve the above object, the utility model provides the following technical solution: a pyrolysis reactor for lithium carbonate production, comprising a pyrolysis reactor body, a transmission rod movably connected to the inner side of the pyrolysis reactor body, a stirring rod fixedly connected to the outer side of the transmission rod, a motor fixedly connected to the upper end of the pyrolysis reactor body, and mutually meshing gears fixedly connected to the output end of the motor and the outer side of the transmission rod;

[0008] The transmission rod is provided with a cleaning piece, the outer side of the pyrolysis reactor body is fixedly connected with a cooling box, the side wall of the pyrolysis reactor body is provided with a cooling cavity, and the upper end of the cooling box is fixedly connected with a delivery pump whose end is connected with the cooling cavity.

[0009] Furthermore, the upper end of the pyrolysis reactor body is connected to a feed pipe, and the lower end of the pyrolysis reactor body is connected to a drain pipe.

[0010] Furthermore, a rotating hole is provided at the upper end of the pyrolysis reactor body, the rotating hole is located in the middle of the upper end of the pyrolysis reactor body, and a bearing is installed inside the rotating hole.

[0011] Furthermore, the transmission rod is hollow, the transmission rod is located inside the rotating hole, and the transmission rod is movably connected to the rotating hole through a bearing.

[0012] Furthermore, the cleaning component includes a water supply pump fixedly installed on the upper end of the pyrolysis reactor body, the drainage end of the water supply pump is connected to the transmission rod, and the outer side of the transmission rod is connected to a nozzle.

[0013] Furthermore, the drainage end of the water supply pump is connected to a connecting pipe, the other end of the connecting pipe is connected to a rotating joint, and the other end of the rotating joint is rotatably connected to the transmission rod.

[0014] Furthermore, a semiconductor refrigeration plate is fixedly connected to the inner wall of the cooling box, a liquid inlet hole is opened at the upper end of the cooling box, and a plugging cover is provided on the inner side of the liquid inlet hole.

[0015] Furthermore, one end of the cooling chamber is connected to a reflux pipe, and the other end of the reflux pipe is connected to a cooling box.

[0016] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0017] The pyrolysis reactor for lithium carbonate production is started by a motor, and the driving rod drives the stirring rod to rotate in cooperation with the gear, so as to accelerate the reaction speed of the material inside the pyrolysis reactor body; the semiconductor refrigeration plate is started to refrigerate the liquid in its cooling box, and the delivery pump is started to extract the liquid in the cooling box, and the extracted liquid is transported to the cold zone cavity through the infusion tube to cool the pyrolysis reactor body; and the reflux pipe is provided so that the liquid in the cooling cavity can be circulated for use; after the reaction is completed, the water supply pump is started, and the water supply pump transports liquid to the inner side of the driving rod in cooperation with the connecting pipe and the rotating joint, and the pyrolysis reactor body can be conveniently cleaned in cooperation with the nozzle. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0019] Figure 2 It is a schematic cross-sectional view of the structure of the utility model;

[0020] Figure 3 It is a three-dimensional schematic diagram of the transmission rod of the utility model structure.

[0021] In the figure: 1. pyrolysis reactor body; 101. feed pipe; 102. discharge pipe; 103. rotating hole; 2. transmission rod; 3. stirring rod; 4. motor; 5. gear; 6. cleaning part; 61. water supply pump; 611. connecting pipe; 612. rotary joint; 62. nozzle; 7. cooling box; 701. semiconductor refrigeration plate; 702. liquid inlet hole; 703. plugging cover; 8. cooling chamber; 801. reflux pipe; 9. delivery pump; 901. infusion tube. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions 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. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-3In this embodiment, a pyrolysis reactor for lithium carbonate production includes a pyrolysis reactor body 1, the upper end of the pyrolysis reactor body 1 is connected to a feed pipe 101, the lower end of the pyrolysis reactor body 1 is connected to a drain pipe 102, the drain pipe 102 is located in the middle of the lower end of the pyrolysis reactor body 1, and the lower end of the pyrolysis reactor body 1 is fixedly connected to a support column, and the number of the support columns is three;

[0024] A rotating hole 103 is provided at the upper end of the pyrolysis reactor body 1 . The rotating hole 103 is located in the middle of the upper end of the pyrolysis reactor body 1 . A bearing is installed inside the rotating hole 103 .

[0025] A transmission rod 2 is movably connected to the inner side of the pyrolysis reactor body 1. The transmission rod 2 is hollow and is located inside the rotating hole 103. The transmission rod 2 is movably connected to the rotating hole 103 through a bearing. The rotating hole 103 cooperates with the bearing so that the transmission rod 2 can rotate stably. A stirring rod 3 is fixedly connected to the outer side of the transmission rod 2. The number of the stirring rods 3 is several.

[0026] The upper end of the pyrolysis reactor body 1 is fixedly connected with a motor 4, which is fixedly connected to the pyrolysis reactor body 1 through a fixing plate. The output end of the motor 4 and the outer side of the transmission rod 2 are fixedly connected with mutually meshing gears 5.

[0027] The transmission rod 2 is provided with a cleaning member 6, which includes a water supply pump 61 fixedly mounted on the upper end of the pyrolysis reactor body 1. The water inlet end of the water supply pump 61 is connected to a water storage device, which is a well-known technology and does not need to be elaborated in detail. The drainage end of the water supply pump 61 is connected to a connecting pipe 611, and the other end of the connecting pipe 611 is connected to a rotating joint 612, and the other end of the rotating joint 612 is rotatably connected to the transmission rod 2;

[0028] The drainage end of the water supply pump 61 is connected to the transmission rod 2 , and the outer side of the transmission rod 2 is connected to a nozzle 62 . There are several nozzles 62 , and the nozzles 62 are evenly connected to the outer side of the transmission rod 2 .

[0029] A cooling box 7 is fixedly connected to the outer side of the pyrolysis reactor body 1, and a semiconductor refrigeration plate 701 is fixedly connected to the inner wall of the cooling box 7. The semiconductor refrigeration plate 701 can refrigerate the liquid inside the cooling box 7. A liquid inlet hole 702 is provided at the upper end of the cooling box 7, and a plugging cover 703 is provided on the inner side of the liquid inlet hole 702. A sealing gasket is provided on the outer side of the plugging cover 703. A cooling chamber 8 is provided on the side wall of the pyrolysis reactor body 1. The cooling chamber 8 is in a surrounding shape. One end of the cooling chamber 8 is connected to a reflux pipe 801, and the other end of the reflux pipe 801 is connected to the cooling box 7. The setting of the reflux pipe 801 allows the liquid in the cooling chamber 8 to flow in a cycle. A delivery pump 9 having one end connected to the cooling chamber 8 is fixedly connected to the upper end of the cooling box 7, and the water pumping end of the delivery pump 9 is connected to the cooling box 7, and the discharge end of the delivery pump 9 is connected to the cooling chamber 8 through a liquid infusion pipe 901.

[0030] In this embodiment, the pyrolysis reactor body 1 can be cleaned and cooled by the cooperation between the transmission rod 2 and the delivery pump 9 .

[0031] The working principle of the above embodiment is:

[0032] By starting the motor 4, with the cooperation of the gear 5, the transmission rod 2 drives the stirring rod 3 to rotate, thereby accelerating the reaction speed of the material inside the pyrolysis reactor body 1; starting the semiconductor refrigeration plate 701, refrigerating the liquid in its cooling box 7, and by starting the delivery pump 9, the delivery pump 9 extracts the liquid in the cooling box 7, and the extracted liquid is transported to the cold zone cavity 8 through the infusion tube 901, so as to cool the pyrolysis reactor body 1; and the reflux pipe 801 is provided so that the liquid in the cooling cavity 8 can be circulated for use; after the reaction is completed, starting the water supply pump 61, with the cooperation of the connecting pipe 611 and the rotating joint 612, the water supply pump 61 transports liquid to the inside of the transmission rod 2, and with the cooperation of the nozzle 62, the pyrolysis reactor body 1 can be conveniently cleaned.

[0033] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pyrolysis reactor for lithium carbonate production, comprising a pyrolysis reactor body (1), characterized in that: The inner side of the pyrolysis reactor body (1) is movably connected to a transmission rod (2), the outer side of the transmission rod (2) is fixedly connected to a stirring rod (3), the upper end of the pyrolysis reactor body (1) is fixedly connected to a motor (4), and the output end of the motor (4) and the outer side of the transmission rod (2) are both fixedly connected to mutually meshing gears (5); The transmission rod (2) is provided with a cleaning part (6); the outer side of the pyrolysis reactor body (1) is fixedly connected to a cooling box (7); the side wall of the pyrolysis reactor body (1) is provided with a cooling chamber (8); the upper end of the cooling box (7) is fixedly connected to a delivery pump (9) whose one end is connected to the cooling chamber (8).

2. A pyrolysis reactor for lithium carbonate production according to claim 1, characterized in that: The upper end of the pyrolysis reactor body (1) is connected to a feed pipe (101), and the lower end of the pyrolysis reactor body (1) is connected to a liquid discharge pipe (102).

3. A pyrolysis reactor for lithium carbonate production according to claim 1, characterized in that: A rotating hole (103) is provided at the upper end of the pyrolysis reactor body (1), and the rotating hole (103) is located in the middle of the upper end of the pyrolysis reactor body (1), and a bearing is installed inside the rotating hole (103).

4. A pyrolysis reactor for lithium carbonate production according to claim 3, characterized in that: The transmission rod (2) is hollow, the transmission rod (2) is located inside the rotating hole (103), and the transmission rod (2) is movably connected to the rotating hole (103) via a bearing.

5. A pyrolysis reactor for lithium carbonate production according to claim 1, characterized in that: The cleaning component (6) comprises a water supply pump (61) fixedly mounted on the upper end of the pyrolysis reactor body (1); a drainage end of the water supply pump (61) is connected to a transmission rod (2); and a nozzle (62) is connected to the outer side of the transmission rod (2).

6. A pyrolysis reactor for lithium carbonate production according to claim 5, characterized in that: The drainage end of the water supply pump (61) is connected to a connecting pipe (611), the other end of the connecting pipe (611) is connected to a rotating joint (612), and the other end of the rotating joint (612) is rotatably connected to the transmission rod (2).

7. A pyrolysis reactor for lithium carbonate production according to claim 1, characterized in that: A semiconductor refrigeration plate (701) is fixedly connected to the inner wall of the cooling box (7), a liquid inlet hole (702) is provided at the upper end of the cooling box (7), and a blocking cover (703) is provided on the inner side of the liquid inlet hole (702).

8. A pyrolysis reactor for lithium carbonate production according to claim 1, characterized in that: One end of the cooling chamber (8) is connected to a reflux pipe (801), and the other end of the reflux pipe (801) is connected to a cooling box (7).

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