Gas-phase aluminum oxide production system

Abstract

The invention relates to the field of gas-phase aluminum oxide production, and discloses a gas-phase aluminum oxide production system which comprises a kettle body, a cooling device, a filtering device and a collecting device, a horizontally-arranged partition plate is arranged in the kettle body to divide an upper cavity and a lower cavity of the kettle body, a plurality of air holes are evenly formed in the partition plate, and the cooling device is connected with the filtering device. An exhaust pipe is processed at the inner top of the upper chamber, a steam pipeline is mounted on the partition plate, the tail end of the exhaust pipe penetrates through the kettle body and then is connected with a cooling device, a heating furnace is connected to the side wall of the kettle body of the lower chamber, an air outlet is formed in the heating furnace and extends into the lower chamber, a combustion-supporting pipe is further arranged in the lower chamber, and the combustion-supporting pipe is connected with the heating furnace. And a filtering device is mounted in the cooling device and is connected with the collecting device. According to the invention, a closed gas-phase aluminum oxide production system can be formed, and the normal production of gas-phase aluminum oxide is effectively ensured.

Description

Technical Field

[0001] The invention relates to the field of gas phase aluminum oxide production, in particular to a gas phase aluminum oxide production system. Background Art

[0002] Gas-phase alumina is an important inorganic compound that is widely used in many fields. However, the production process of gas-phase alumina involves complex processes such as high-temperature combustion and hydrolysis, which require a lot of energy and raw material inputs, resulting in high production costs. At the same time, harmful gases are produced during the production process, so the production system needs to be in a closed environment. However, the production process involves dangerous factors such as high temperature and high pressure. If the operation is improper or the equipment fails, it may cause safety hazards. Therefore, a set of equipment that can safely and stably produce gas-phase alumina is required for production. Summary of the invention

[0003] The purpose of the present invention is to solve the problems in the background technology and provide a gas phase aluminum oxide production system.

[0004] The objective of the present invention is achieved through the following technical solutions:

[0005] A gas phase alumina production system comprises a kettle body, a cooling device, a filtering device and a collecting device, wherein a horizontally arranged partition plate is arranged in the kettle body to divide an upper chamber and a lower chamber of the kettle body, a plurality of air holes are evenly processed on the partition plate, an exhaust pipe is processed on the inner top of the upper chamber, a steam pipe is installed on the partition plate, the end of the exhaust pipe passes through the kettle body and is connected to the cooling device, a heating furnace is connected to the side wall of the kettle body of the lower chamber, an air outlet is arranged on the heating furnace, the air outlet extends into the interior of the lower chamber, a combustion-supporting pipe is also arranged in the interior of the lower chamber, a filtering device is installed in the cooling device, and the filtering device is connected to the collecting device.

[0006] The exhaust pipe is smoothly connected to the cooling device, and the air hole extends toward the upper chamber.

[0007] A heating pot is installed in the heating furnace, and a stirring shaft and a feeding pipe that can be extended into the heating pot are installed on the heating furnace above the heating pot. The side wall of the upper part of the heating furnace is connected to the lower chamber through a gas collecting pipe. The heating furnace is hollow, and oil bath circulation pipes for heating the heating pot are respectively connected at both ends of the hollow heating furnace.

[0008] There are two combustion-supporting tubes, and the two combustion-supporting tubes transmit hydrogen and oxygen respectively.

[0009] The cooling device includes a cooling barrel and a spray system installed in the cooling barrel, the spray system is installed on the top of the cooling barrel, the exhaust pipe is installed on the side wall of the lower part of the cooling barrel, the lower part of the cooling barrel is processed with a uniform distribution disk, the exhaust pipe is connected with the uniform distribution disk, the uniform distribution disk is a hollow structure, the surface and bottom of the uniform distribution disk are respectively processed with air nozzles extending upward and downward, and through holes are processed on the uniform distribution disk between adjacent air nozzles, the top of the cooling barrel is connected with an exhaust pipe, and the bottom of the cooling barrel is connected to a filtering device.

[0010] The filtering device includes a sedimentation bin, a deceleration bin and a sedimentation tank, which are connected in sequence from top to bottom. The lower part of the sedimentation bin is conical, and an internal support assembly is installed in the sedimentation bin. A liquid inlet aligned with the internal support assembly is provided on the top of the sedimentation bin, and an exhaust gas port is provided on the top of the sedimentation bin outside the internal support assembly. The deceleration bin is conical, and viewing windows are installed on both sides of the deceleration bin. A liquid inlet pipe and a liquid replenishing port are provided on the top of the deceleration bin, and the liquid inlet is connected to the drain port at the bottom of the sedimentation bin. One end of the sedimentation tank is connected to the bottom of the deceleration bin. Flange ports are provided on the upper and lower parts of the sedimentation tank, and a discharge port is provided at the bottom of the sedimentation tank, and the discharge port is connected to the collecting device.

[0011] Liquid level sensors and overflow ports are respectively provided on the side walls of the sedimentation bin on both sides of the inner support assembly.

[0012] The collecting device includes a neutralization tank and a dryer. A rotatable stirring shaft is installed in the middle of the neutralization tank. A liquid replenishing pipe is provided at the top of the neutralization tank on one side of the stirring shaft and is connected to a discharge port. A valve is provided at the bottom of the neutralization tank and is connected to the dryer. A horizontally flippable flip shaft is installed in the dryer. The dryer is hollow. A heat transfer oil inlet pipe is connected to the bottom of one end of the hollow dryer, and a heat transfer oil outlet pipe is connected to the top of the other end. A feed port connected to the neutralization tank is provided at one end of the dryer, and a steam outlet is provided at the top of the other end. A discharge valve is provided at the bottom of the dryer below the steam outlet.

[0013] The steam outlet is connected to the kettle body through a steam pipeline.

[0014] The gas phase aluminum oxide production system provided by the present invention has the following beneficial effects:

[0015] (1) By arranging the kettle body, cooling device, filtering device and collecting device, a closed gas phase aluminum oxide production system can be formed, and each component is closed and connected. The whole process utilizes the natural power of each device for transmission, effectively ensuring the normal production of gas phase aluminum oxide;

[0016] (2) By setting up a kettle body and installing a heating furnace on the kettle body, alumina can be continuously produced. After a hydrolysis reaction with high-temperature steam and subsequent cooling devices, filtering devices and collecting devices, the quality of gas-phase alumina can be guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 A schematic diagram of the structure provided by an embodiment of the present invention.

[0019] Figure 2 A schematic diagram of the internal structure of a kettle body provided in an embodiment of the present invention.

[0020] Figure 3 A schematic diagram of the structure of a cooling device provided in an embodiment of the present invention

[0021] Figure 4 A schematic diagram of the structure of a filtering device provided in an embodiment of the present invention.

[0022] Figure 5 A schematic diagram of the structure of a collecting device provided in an embodiment of the present invention.

[0023] Figure numerals: 1, kettle body; 11, partition plate; 12, air hole; 13, exhaust pipe; 14, steam pipe; 15, combustion-supporting pipe; 2, heating furnace; 21, heating pot; 22, stirring shaft; 23, feeding pipe; 24, gas collecting pipe; 25, oil bath circulation pipe; 3, cooling device; 31, cooling barrel; 32, spray system; 33, uniform distribution plate; 34, air nozzle; 35, through hole; 36, exhaust pipe; 4, filtering device; 41, sedimentation bin; 42, deceleration bin; 43. Sedimentation tank; 44. Internal support assembly; 45. Liquid inlet; 46. Exhaust outlet; 47. Viewing window; 48. Liquid inlet pipe; 49. Liquid replenishment port; 410. Flange port; 411. Discharge port; 5. Collecting device; 51. Neutralization tank; 52. Dryer; 53. Stirring shaft; 54. Liquid replenishment pipe; 55. Valve; 56. Flipping shaft; 57. Thermal oil inlet pipe; 58. Thermal oil outlet pipe; 59. Feed port; 510. Steam outlet; 511. Discharge valve. DETAILED DESCRIPTION

[0024] Example

[0025] like Figure 1 to Figure 5As shown, the gas phase aluminum oxide production system provided in this embodiment includes a kettle body 1, a cooling device 3, a filtering device 4 and a collecting device 5. The kettle body 1 is provided with a horizontally arranged partition plate 11 to divide the upper chamber and the lower chamber of the kettle body 1. The partition plate 11 is evenly processed with a plurality of air holes 12. The inner top of the upper chamber is processed with an exhaust pipe 13, and the exhaust pipe 13 is smoothly connected to the cooling device 3. The smooth exhaust pipe 13 exhausts more smoothly and can improve the flow efficiency. A steam pipe 14 is installed on the partition plate 11. The end of the exhaust pipe 13 passes through the kettle body 1 and is connected to the cooling device 3. In order to prevent steam condensation from entering the lower chamber, the air hole 12 extends toward the upper chamber. The side wall of the kettle body 1 in the lower chamber is connected with A heating furnace 2 is provided with a heating pot 21, a stirring shaft 22 and a feeding pipe 23 which can be extended into the heating pot 21 are provided on the heating furnace 2 above the heating pot 21, the side wall of the upper part of the heating furnace 2 is connected to the lower chamber through a collecting pipe 24, the heating furnace 2 is hollow, and oil bath circulation pipes 25 for heating the heating pot 21 are respectively connected at both ends of the hollow heating furnace 2, an air outlet of the collecting pipe 24 is provided on the heating furnace 2, the air outlet of the collecting pipe 24 extends into the lower chamber, a combustion-supporting pipe 15 is also provided inside the lower chamber, there are two combustion-supporting pipes 15, the two combustion-supporting pipes 15 transmit hydrogen and oxygen respectively, a filtering device 4 is installed in the cooling device 3, and the filtering device 4 is connected to the collecting device 5.

[0026] like Figure 3 As shown, the cooling device 3 includes a cooling barrel 31 and a spray system 32 installed in the cooling barrel 31. The spray system 32 is installed in the top of the cooling barrel 31. The exhaust pipe 13 is installed on the side wall of the lower part of the cooling barrel. The lower part of the cooling barrel 31 is processed with a uniform distribution plate 33. The exhaust pipe 13 is connected to the uniform distribution plate 33. The uniform distribution plate 33 is a hollow structure. The surface and bottom of the uniform distribution plate 33 are respectively processed with air nozzles 34 extending upward and downward. Through holes 35 are processed on the uniform distribution plate 33 between adjacent air nozzles 34. After the high-temperature steam is cooled by the spray system 32, the aluminum oxide is rapidly solidified. The top of the cooling barrel 31 is connected to an exhaust pipe 36. The exhaust pipe 36 is used to transmit harmful exhaust gases generated during the processing to the exhaust gas treatment station for centralized treatment. The bottom of the cooling barrel 31 is connected to the filter device 4. The filter device 4 is used to filter the raw materials to improve the purity of the gas phase aluminum oxide. Figure 4As shown, the filtering device 4 includes a sedimentation bin 41, a deceleration bin 42 and a sedimentation tank 43, and the sedimentation bin 41, the deceleration bin 42 and the sedimentation tank 43 are connected in sequence from top to bottom. The lower part of the sedimentation bin 41 is conical, and an internal support assembly 44 is installed in the sedimentation bin. The top of the sedimentation bin 41 is provided with a liquid inlet 45 aligned with the internal support assembly 44, and the top of the sedimentation bin 41 outside the internal support assembly 44 is provided with an exhaust port 46. The deceleration bin 42 is conical, and viewing windows 47 are installed on both sides of the deceleration bin 42. A liquid inlet pipe 48 and a liquid replenishing port 49 are provided on the top of the deceleration bin 42. One end of the sedimentation tank 43 is connected to the bottom of the deceleration bin 42, and flange openings 410 are provided on the upper and lower parts of the sedimentation tank 43. A discharge port 411 is provided at the bottom of the sedimentation tank 43, and the discharge port 411 is connected to the collecting device 5. Liquid level sensors and overflow ports are respectively provided on the side walls of the sedimentation bin 41 on both sides of the internal support assembly 44.

[0027] like Figure 5 As shown, the collecting device 5 includes a neutralization tank 51 and a dryer 52, a rotatable stirring shaft 53 is installed in the middle of the neutralization tank 51, a liquid replenishing pipe 54 is provided at the top of the neutralization tank 51 on one side of the stirring shaft 53 and is connected to the discharge port 411, a valve 55 is provided at the bottom of the neutralization tank and is connected to the dryer 52, a horizontally flippable flip shaft 56 is installed in the dryer 52, the dryer 52 is hollow, a heat transfer oil inlet pipe 57 is connected to the bottom of one end of the hollow dryer 52, and a heat transfer oil outlet pipe 58 is connected to the top of the other end, a feed port 59 connected to the neutralization tank 51 is provided at one end of the dryer 52, a steam outlet 510 is provided at the top of the other end, and a discharge valve 511 is provided at the bottom of the dryer 52 below the steam outlet 510.

[0028] In order to improve energy utilization, the steam outlet 510 is connected to the kettle body 1 through a steam pipe 14 .

[0029] The method of using the present invention is:

[0030] First, aluminum chloride raw material is added into the heating pot 21 through the feeding pipe 23, and then the heating pot 21 is heated through the oil bath circulation pipe 25. In this process, the stirring shaft 22 is stirred to make the aluminum chloride raw material heated evenly. As the temperature increases, the aluminum chloride raw material is gasified and enters the lower chamber through the gas collecting pipe 24, and burns with the hydrogen-oxygen flame mixed with the hydrogen and oxygen transported in the combustion-supporting pipe 15 in the lower chamber to produce a reaction. In this process, the lower chamber is in a high-pressure state. Under the impetus of the high pressure, the exhaust gas and the raw material pass through the pores 12 and enter the upper chamber. At this time, the steam in the steam pipe 14 produces a hydrolysis reaction with the aluminum chloride raw material to produce alumina and other by-products. At this time, the pressure in the kettle body 1 gradually increases, pushing the raw material into the cooling device 3 for solidification. The solidified material enters the filtering device 4 for separation to obtain a solid-liquid mixture of aluminum oxide. Subsequently, it enters the collecting device 5 for drying to obtain a pure aluminum oxide raw material. The whole system is easy to operate and has high safety performance.

[0031] The above is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any modification and replacement based on the technical solution and inventive concept provided by the present invention shall be included in the protection scope of the present invention. It should be noted that the structures or components illustrated in the drawings are not necessarily drawn to scale, and the present invention omits the description of known components and processing technologies and processes to avoid unnecessary limitation of the present invention.

Claims

1. A gas phase aluminum oxide production system, characterized in that: The invention comprises a kettle body (1), a cooling device (3), a filtering device (4) and a collecting device (5). The kettle body (1) is provided with a horizontally arranged partition plate (11) to divide the upper chamber and the lower chamber of the kettle body (1). The partition plate (11) is evenly processed with a plurality of air holes (12). An exhaust pipe (13) is processed on the inner top of the upper chamber. A steam pipe (14) is installed on the partition plate (11). The end of the exhaust pipe (13) passes through the kettle body (1) and is connected to the cooling device (3). A heating furnace (2) is connected to the side wall of the kettle body (1) of the lower chamber. The heating furnace (2) is provided with an air outlet, which extends into the interior of the lower chamber. A combustion-supporting pipe (15) is also provided in the interior of the lower chamber. A filtering device (4) is installed in the cooling device (3). The filtering device (4) is connected to the collecting device (5).

2. The gas phase aluminum oxide production system according to claim 1, characterized in that: The exhaust pipe (13) is smoothly connected to the cooling device (3), and the air hole (12) extends toward the upper chamber.

3. The gas phase aluminum oxide production system according to claim 1, characterized in that: A heating pot (21) is installed in the heating furnace (2); a stirring shaft (22) and a feeding pipe (23) that can be extended into the heating pot (21) are installed on the heating furnace (2) above the heating pot (21); the upper side wall of the heating furnace (2) is connected to the lower chamber through a gas collecting pipe (24); the heating furnace (2) is hollow, and oil bath circulation pipes (25) for heating the heating pot (21) are respectively connected to both ends of the hollow heating furnace (2).

4. The gas phase aluminum oxide production system according to claim 1, characterized in that: There are two combustion-supporting tubes (15), and the two combustion-supporting tubes (15) transmit hydrogen and oxygen respectively.

5. The gas phase aluminum oxide production system according to claim 1, characterized in that: The cooling device (3) comprises a cooling barrel (31) and a spray system (32) installed in the cooling barrel (31), wherein the spray system (32) is installed at the top of the cooling barrel (31), and the exhaust pipe (13) is installed on the side wall of the lower part of the cooling barrel. A uniform distribution disk (33) is processed at the lower part of the cooling barrel (31), and the exhaust pipe (13) is connected to the uniform distribution disk (33). The uniform distribution disk (33) is a hollow structure, and the surface and bottom of the uniform distribution disk (33) are respectively processed with air nozzles (34) extending upward and downward, and through holes (35) are processed on the uniform distribution disk (33) between adjacent air nozzles (34). The top of the cooling barrel (31) is connected to an exhaust pipe (36), and the bottom of the cooling barrel (31) is connected to the filtering device (4).

6. The gas phase aluminum oxide production system according to claim 5, characterized in that: The filtering device (4) comprises a sedimentation bin (41), a deceleration bin (42) and a sedimentation tank (43), wherein the sedimentation bin (41), the deceleration bin (42) and the sedimentation tank (43) are connected in sequence from top to bottom, the lower part of the sedimentation bin (41) is conical, an inner support assembly (44) is installed in the sedimentation bin (41), a liquid inlet (45) aligned with the inner support assembly (44) is provided at the top of the sedimentation bin (41), and a liquid inlet (45) aligned with the inner support assembly (44) is provided at the top of the sedimentation bin (41) outside the inner support assembly (44). The deceleration chamber (42) has an exhaust port (46), the deceleration chamber (42) is conical, viewing windows (47) are installed on both sides of the deceleration chamber (42), a liquid inlet pipe (48) and a liquid replenishing port (49) are arranged on the top of the deceleration chamber (42), one end of the sedimentation tank (43) is connected to the bottom of the deceleration chamber (42), the upper and lower parts of the sedimentation tank (43) are both provided with flange ports (410), and the bottom of the sedimentation tank (43) is provided with a discharge port (411), and the discharge port (411) is connected to the collecting device (5).

7. The gas phase aluminum oxide production system according to claim 6, characterized in that: Liquid level sensors and overflow ports are respectively provided on the side walls of the sedimentation bin (41) on both sides of the inner support assembly (44).

8. The gas phase aluminum oxide production system according to claim 7, characterized in that: The collecting device (5) comprises a neutralization tank (51) and a dryer (52). A rotatable stirring shaft (53) is installed in the middle of the neutralization tank (51). A liquid replenishing pipe (54) is provided at the top of the neutralization tank (51) on one side of the stirring shaft (53) and is connected to a discharge port (411). A valve (55) is provided at the bottom of the neutralization tank (51) and is connected to the dryer (52). A horizontally flipping shaft (56) is installed in the dryer (52). The dryer (52) is hollow. A heat transfer oil inlet pipe (57) is connected to the bottom of one end of the hollow dryer (52), and a heat transfer oil outlet pipe (58) is connected to the top of the other end. A feed port (59) connected to the neutralization tank (51) is provided at one end of the dryer (52), and a steam outlet (510) is provided at the top of the other end. A discharge valve (511) is provided at the bottom of the dryer (52) below the steam outlet (510).

9. The gas phase aluminum oxide production system according to claim 8, characterized in that: The steam outlet (510) is connected to the kettle body (1) via a steam pipe (14).

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