A continuous purification apparatus

Abstract

A continuous purification device relates to a purification device. The present application solves the problem that the existing intermittent purification furnace cannot completely solve the double pain points of efficiency and purity. The present application comprises a stand, a buffer tank is fixedly installed on the stand, a reaction cavity is arranged in the buffer tank, a sealing cover is arranged at the top opening of the buffer tank, a feeding assembly and an exhaust assembly are connected to the top of the sealing cover, an air inlet pipe is further arranged on the sealing cover, and a discharge port is arranged at the bottom of the buffer tank. The present application belongs to the technical field of graphite preparation.

Description

Technical Field

[0001] This invention relates to a purification device, belonging to the field of graphite preparation technology. Background Technology

[0002] Natural graphite, including natural flake graphite and natural microcrystalline graphite, is one of my country's advantageous mineral resources. To achieve deep processing and application of natural graphite, it must be purified. High-temperature removal of impurities from graphite is an advanced and environmentally friendly graphite purification process. Traditional graphite purification processes, such as acid washing, have purification cycles exceeding 24 hours and low efficiency, making them unsuitable for high-end applications and hindering the upgrading of the carbon nanotube industry.

[0003] The purification furnaces used for graphite purification are divided into batch purification furnaces and continuous purification furnaces. Currently, the most commonly used purification furnaces are the batch-type Chison graphitization furnaces and vacuum medium-frequency induction furnaces. These batch-type furnaces suffer from several drawbacks. First, downtime leads to low gas purification efficiency, making them unsuitable for the feeding requirements of continuous production lines. This necessitates the use of multiple additional units operating alternately, increasing equipment procurement and maintenance costs. Second, each shutdown requires reheating and pressurizing to process parameters, consuming significant energy and increasing the risk of unstable purification medium activity due to temperature and pressure fluctuations. This negatively impacts gas purification accuracy, making it difficult to meet continuous production demands. Furthermore, each start-up and shutdown carries the risk of gas leakage during chamber switching, and the purification medium still requires shutdown for feeding and discharging operations, failing to fundamentally achieve a continuous "feed-purification-discharge" process.

[0004] A utility model patent with publication number 222298525U and application date of May 27, 2024, discloses a high-temperature purification furnace, including a furnace body and a fixed platform fixed to the furnace body. A heating and insulation component is installed inside the furnace body, and the heating and insulation component is vertically connected to the furnace body via a heating and lifting component. The heating and insulation component includes a heat insulation cage, graphite heaters disposed within the heat insulation cage, and an insulation layer. Multiple graphite heaters are arranged circumferentially, and the insulation layer is disposed between the graphite heaters and the inner wall of the heat insulation cage. The heating and insulation component uses isostatic graphite plate heaters, which can withstand large currents and have good temperature uniformity, enabling stable use for extended periods under ultra-high temperature conditions. The insulation layer uses adhesive-based graphite soft felt. The unique airflow web-forming technology of the adhesive-based graphite soft felt results in a fiber network structure with high uniformity, ideal chemical properties, and good tensile strength, while also exhibiting low thermal conductivity, which is beneficial for heat preservation.

[0005] However, the aforementioned patented technologies still fail to fundamentally achieve a continuous process of "feeding-purification-discharge," and cannot completely solve the dual pain points of efficiency and purity. Summary of the Invention

[0006] To address the problem that existing intermittent purification furnaces cannot completely solve the dual problems of efficiency and purity, this invention proposes a continuous purification device.

[0007] The technical solution adopted by the present invention to solve the above problems is as follows: The present invention includes a frame, on which a buffer tank is fixedly installed. The buffer tank is provided with a reaction chamber. A sealing cover is provided at the top opening of the buffer tank. A feeding component and an exhaust component are connected to the top of the sealing cover. An air inlet pipe is also provided on the sealing cover. A discharge port is provided at the bottom of the buffer tank.

[0008] Furthermore, the feeding assembly includes a hopper, the bottom of which is connected to a feeding pipe. The lower end of the feeding pipe passes through the sealing cover from top to bottom and is inserted into the reaction chamber. A feeding valve is provided on the feeding pipe.

[0009] Furthermore, the exhaust assembly includes an exhaust pipe, one end of which passes through the sealing cover from top to bottom and is inserted into the reaction chamber. The other end of the exhaust pipe is provided with a vacuum passage and an equipment gas discharge passage. A vacuum passage valve is provided on the vacuum passage, and a discharge pipe valve is provided on the equipment gas discharge passage.

[0010] Furthermore, a discharge pipe is provided at the bottom outlet of the buffer tank, and a discharge valve is provided on the discharge pipe.

[0011] Furthermore, it also includes an automatic opening hydraulic mechanism, through which the edge of the sealing cap is connected to the buffer tank.

[0012] Furthermore, the automatic opening hydraulic mechanism includes a lifting cylinder, the cylinder body of which is mounted on the outer wall of the buffer tank, and the extension rod of the lifting cylinder is connected to the edge of the sealing cover.

[0013] Furthermore, an intake valve is installed on the intake pipe.

[0014] The beneficial effects of this invention are: This invention is used for continuous and high-precision purification of raw materials under an atmosphere. Through a multi-unit collaborative continuous operation structure and a precise control system, impurities in the raw materials are removed, so that the purification of the target carbon material meets industry standards, and the purification process is continuously output online, realizing the continuous production of high and mid-range products. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 1 In the middle, 1-stand, 2-buffer tank, 3-reaction chamber, 4-sealing cover, 5-air inlet pipe, 6-hopper, 7-feeding pipe, 8-feeding valve, 9-exhaust pipe, 10-vacuum circuit, 11-equipment gas discharge pipe, 12-vacuum circuit valve, 13-discharge pipe valve, 14-discharge pipe, 15-discharge valve, 16-lifting cylinder, 17-air inlet valve. Detailed Implementation

[0016] Specific implementation method one: as follows Figure 1 As shown, a continuous purification device includes a stand 1, on which a buffer tank 2 is fixedly installed. The buffer tank 2 has a reaction chamber 3 inside. A sealing cover 4 is provided at the top opening of the buffer tank 2. A feeding assembly and an exhaust assembly are connected to the top of the sealing cover 4. An air inlet pipe 5 is also provided on the sealing cover 4. An air inlet valve 17 is provided on the air inlet pipe 5. An outlet is provided at the bottom of the buffer tank 2. A discharge pipe 14 is connected to the outlet. A discharge valve 15 is provided on the discharge pipe 14.

[0017] The feeding assembly consists of a hopper 6 and a feeding pipe 7. The lower end of the feeding pipe 7 passes through the top of the sealing cover 4 from top to bottom and is inserted into the reaction chamber 3. The upper end of the feeding pipe 7 is connected to the bottom of the hopper 6. In order to control the feeding amount, a feeding valve 8 is installed on the feeding pipe 7.

[0018] The exhaust assembly includes an exhaust pipe 9. One end of the exhaust pipe 9 passes through the sealing cover 4 from top to bottom and is inserted into the reaction chamber 3. The other end of the exhaust pipe 9 is connected to the vacuum passage 10 and the equipment gas discharge passage 11 through a three-way pipe. In order to facilitate the control of the vacuum passage 10 and the equipment gas discharge passage 11, a vacuum passage valve 12 is provided on the vacuum passage 10 and a discharge pipe valve 13 is provided on the equipment gas discharge passage 11.

[0019] like Figure 1 As shown, in some embodiments, an automatic opening hydraulic mechanism is also included, and the edge of the sealing cover 4 is connected to the buffer tank 2 via the automatic opening hydraulic mechanism.

[0020] The automatic opening hydraulic mechanism includes a lifting cylinder 16, the cylinder body of which is installed on the outer wall of the buffer tank 2, and the telescopic rod of the lifting cylinder 16 is connected to the edge of the sealing cover 4.

[0021] The sealing cover 4 is connected to the fixed plate and the base above the main shaft of the lifting cylinder 16. The lifting cylinder 16 is fixed in the vertical center direction of the buffer tank 2. Gas is injected into the lifting cylinder 16 to make its steel circumference move upward, and at the same time, it drives the sealing cover 4 to move in the same direction, and the sealing cover 4 separates from the buffer tank 2.

[0022] After separation, the sealing cover 4 is driven by the electric output power of the gear motor main shaft gear, which drives the cylinder main shaft gear to rotate axially. A bidirectional fixed-point induction switch is provided for limit stop.

[0023] Working principle Carbon material raw material enters the reaction chamber 3 from hopper 6 through buffer tank 2. After low-pressure gas replacement, heating begins. After heating to a certain temperature, acidic or alkaline reaction gas is introduced into buffer tank 2. The reaction gas reacts with the metal impurities in the carbon material raw material. The metal impurities react with the reaction gas to generate volatile compounds. The volatile compounds are discharged through equipment gas discharge pipe 11. After the volatile compounds are discharged, discharge valve 15 is opened, and discharge pipe 14 begins to discharge material.

[0024] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent substitutions, and improvements made to the above embodiments without departing from the scope of the present invention, based on the technical essence of the present invention and within the spirit and principles of the present invention, shall still fall within the protection scope of the present invention.

Claims

1. A continuous purification apparatus, characterized in that, Includes a stand (1), on which a buffer tank (2) is fixedly installed, and a reaction chamber (3) is provided inside the buffer tank (2). A sealing cover (4) is provided at the top opening of the buffer tank (2). A feeding assembly and an exhaust assembly are connected to the top of the sealing cover (4). An air inlet pipe (5) is also provided on the sealing cover (4). A discharge port is provided at the bottom of the buffer tank (2).

2. The continuous purification apparatus according to claim 1, characterized in that, The feeding assembly includes a hopper (6), the bottom of which is connected to a feeding pipe (7). The lower end of the feeding pipe (7) passes through the sealing cover (4) from top to bottom and is inserted into the reaction chamber (3). A feeding valve (8) is provided on the feeding pipe (7).

3. The continuous purification apparatus according to claim 1, characterized in that, The exhaust assembly includes an exhaust pipe (9). One end of the exhaust pipe (9) passes through the sealing cover (4) from top to bottom and is inserted into the reaction chamber (3). The other end of the exhaust pipe (9) is provided with a vacuum passage (10) and an equipment gas discharge pipe (11). A vacuum passage valve (12) is provided on the vacuum passage (10), and a discharge pipe valve (13) is provided on the equipment gas discharge pipe (11).

4. The continuous purification apparatus according to claim 1, characterized in that, The bottom outlet of the buffer tank (2) is provided with a discharge pipe (14) and a discharge valve (15) is provided on the discharge pipe (14).

5. The continuous purification apparatus according to claim 1, characterized in that, It also includes an automatic opening hydraulic mechanism, and the edge of the sealing cover (4) is connected to the buffer tank (2) through the automatic opening hydraulic mechanism.

6. The continuous purification apparatus according to claim 5, characterized in that, The automatic opening hydraulic mechanism includes a lifting cylinder (16), the cylinder body of which is installed on the outer wall of the buffer tank (2), and the telescopic rod of the lifting cylinder (16) is connected to the edge of the sealing cover (4).

7. The continuous purification apparatus according to claim 1, characterized in that, An intake valve (17) is provided on the intake pipe (5).

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