Device for producing crude ammonium perchlorate through cold-process double decomposition

Abstract

The utility model relates to a device for producing crude ammonium perchlorate by cold-process double decomposition, which comprises a kettle body, a charging pipe, a charging valve, a PH regulating tank and a discharging valve, the charging pipe and the charging valve are mounted on the side wall of the kettle body, the charging valve is connected with the PH regulating tank, the discharging valve is mounted at the bottom of the kettle body, a turntable is rotatably mounted in the kettle body, and the turntable is connected with the PH regulating tank. A plurality of stirring shafts are rotationally mounted on the bottom side of the turntable; a crystal removing mechanism for scraping crystals on the inner wall of the kettle body and the outer walls of the stirring shafts is mounted at the bottom of the turntable; lifting of the lifting scraping disc is achieved through work of the pneumatic cylinder, then after crystallization is completed, crystals on the inner wall of the kettle body are scraped off through the inner wall scraping knife, crystals on the stirring shaft are scraped off through the shaft wall scraping knife on the shaft barrel, meanwhile, the stirring shaft drives the lifting scraping disc to rotate, the crystals attached to the lifting scraping disc are thrown off through centrifugal force, and crystallization is completed. The crystal recovery rate is greatly improved, and crystal residues in the kettle body are avoided.

Description

Technical Field

[0001] This utility model relates to the field of ammonium perchlorate production technology, and in particular to a cold metathesis apparatus for producing crude ammonium perchlorate. Background Technology

[0002] Ammonium perchlorate is an important oxidizing agent, widely used in solid rocket propellants, pyrotechnics, and other fields.

[0003] Traditional production methods include electrolysis and metathesis, with metathesis being widely used due to its low cost and simple process.

[0004] However, the existing metathesis method has the following problems: low crystallization efficiency, easy scaling on the inner wall of the reactor and stirring components, resulting in uneven heat transfer and limited crystal growth; low crystal recovery rate, and traditional scrapers cannot completely remove crystals on the reactor wall and stirring shaft, resulting in material waste. Utility Model Content

[0005] The present invention addresses the problem of providing a cold metathesis process for producing crude ammonium perchlorate, which solves the technical problems of low crystallization efficiency, easy scaling on the inner wall of the reactor and stirring components, resulting in uneven heat transfer and limited crystal growth; low crystal recovery rate, and the inability of traditional scrapers to completely remove crystals from the reactor wall and stirring shaft, leading to material waste.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A cold metathesis process for producing crude ammonium perchlorate includes a reactor body, a feed pipe, a feed valve, a pH adjusting tank, and a discharge valve. The feed pipe and feed valve are installed on the side wall of the reactor body. The feed valve is connected to the pH adjusting tank. The discharge valve is installed at the bottom of the reactor body. A turntable is rotatably installed inside the reactor body. Several stirring shafts are rotatably installed on the bottom side of the turntable. A crystal removal mechanism is installed at the bottom of the turntable to scrape away crystals on the inner wall of the reactor body and the outer wall of the stirring shafts.

[0008] Preferably, a cooling pipe is installed inside the vessel, and the cooling pipe is connected to a cooling device.

[0009] Preferably, the turntable is connected to the vessel body bearing, and the turntable has external teeth on its outer side.

[0010] Preferably, a motor is installed on the vessel body, and a rotating gear is installed at the output end of the motor, the rotating gear meshing with an external gear.

[0011] Preferably, a pneumatic cylinder is installed on the top side of the vessel body, and the telescopic end of the pneumatic cylinder passes through the turntable and is rotatably connected to the center of the lifting scraper through a bearing.

[0012] Preferably, a circular inner wall scraper is provided on the outer side of the lifting scraper, and a shaft cylinder is provided on the bottom side of the lifting scraper and outside the stirring shaft, and a circular shaft wall scraper is provided on the shaft cylinder.

[0013] The beneficial effects of this utility model are: the lifting and lowering of the lifting scraper is achieved by the operation of the pneumatic cylinder, and then after crystallization, the crystals on the inner wall of the reactor are scraped off by the inner wall scraper, and the crystals on the stirring shaft are scraped off by the shaft wall scraper on the shaft. At the same time, the stirring shaft drives the lifting scraper to rotate, and the crystals adhering to the lifting scraper are thrown off by centrifugal force, which greatly improves the crystal recovery rate and avoids crystal residue in the reactor. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is an overall side view of the present invention;

[0016] Figure 3 This is a schematic diagram of the first internal structure of this utility model;

[0017] Figure 4 This is a schematic diagram of the internal second structure of this utility model.

[0018] Legend:

[0019] 1. Kettle body; 2. Feeding pipe; 3. Feeding valve; 4. pH adjustment tank; 5. Discharge valve; 6. Turntable; 7. Stirring shaft; 8. Lifting scraper; 9. External gear; 10. Motor; 11. Rotary gear; 12. Pneumatic cylinder; 13. Inner wall scraper; 14. Shaft cylinder; 15. Shaft wall scraper. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0021] Specific implementation examples are given below.

[0022] See Figures 1-4A cold metathesis process for producing crude ammonium perchlorate includes a reactor body 1, a feed pipe 2, a feed valve 3, a pH adjusting tank 4, and a discharge valve 5. The feed pipe 2 and the feed valve 3 are installed on the side wall of the reactor body 1. The feed valve 3 is connected to the pH adjusting tank 4. The discharge valve 5 is installed at the bottom of the reactor body 1. A turntable 6 is rotatably installed inside the reactor body 1. Several stirring shafts 7 are rotatably installed on the bottom side of the turntable 6. A crystal removal mechanism is installed at the bottom of the turntable 6 to scrape the crystals on the inner wall of the reactor body 1 and the outer wall of the stirring shafts 7.

[0023] A cooling pipe is installed inside the vessel body 1, and the cooling pipe is connected to a cooling device to adjust the temperature inside the vessel body 1, thereby facilitating the cold metathesis process.

[0024] Turntable 6 is connected to vessel body 1 by bearing. External teeth 9 are provided on the outer side of turntable 6. Motor 10 is installed on vessel body 1. Rotary teeth 11 are installed at the output end of motor 10. Rotary teeth 11 mesh with external teeth 9. Motor 10 drives rotary teeth 11 to rotate. It cooperates with the meshing external teeth 9 to drive turntable 6 and stirring shaft 7 to rotate. At this time, lifting scraper 8 rotates synchronously.

[0025] A pneumatic cylinder 12 is installed on the top side of the vessel body 1. The telescopic end of the pneumatic cylinder 12 passes through the turntable 6 and is rotatably connected to the center of the lifting scraper 8 via a bearing. A circular inner wall scraper 13 is provided on the outer side of the lifting scraper 8. A shaft cylinder 14 is provided on the bottom side of the lifting scraper 8 and outside the stirring shaft 7. A circular shaft wall scraper 15 is provided on the shaft cylinder 14. The lifting scraper 8 is driven to move down by the pneumatic cylinder 12. At this time, the crystals on the inner wall of the vessel body 1 are scraped off by the inner wall scraper 13, and the crystals on the stirring shaft 7 are scraped off by the shaft wall scraper 15 on the shaft cylinder 14.

[0026] Working principle: Ammonium chloride is heated and dissolved in an ammonium chloride dissolving tank, and sodium perchlorate is heated and dissolved in a sodium perchlorate dissolving tank. The ammonium chloride solution and sodium perchlorate solution are added to the reactor body 1. The temperature inside the reactor body 1 is adjusted to 10℃-20℃ by a cooling device. At this time, the motor 10 drives the rotating gear 11 to rotate, which engages with the meshing external gear 9 to drive the rotating disk 6 and the stirring shaft 7 to rotate, stirring the solution in the reactor body 1 to achieve crystallization. After crystallization, the pneumatic cylinder 12 drives the lifting scraper 8 to move down. At this time, the inner wall scraper 13 scrapes the crystals off the inner wall of the reactor body 1, and the shaft wall scraper 15 on the shaft cylinder 14 scrapes the crystals off the stirring shaft 7. At the same time, the stirring shaft 7 drives the lifting scraper 8 to rotate, and the crystals adhering to the lifting scraper 8 are thrown off by centrifugal force. After crystallization, the discharge valve 5 is opened to discharge the solution, and the crystals and solution are separated by a subsequent centrifuge.

[0027] The lifting and lowering of the lifting scraper 8 is achieved by the operation of the pneumatic cylinder 12. After crystallization, the crystals on the inner wall of the vessel 1 are scraped off by the inner wall scraper 13, and the crystals on the stirring shaft 7 are scraped off by the shaft wall scraper 15 on the shaft cylinder 14. At the same time, the stirring shaft 7 drives the lifting scraper 8 to rotate, and the crystals adhering to the lifting scraper 8 are thrown off by centrifugal force, which greatly improves the crystal recovery rate and avoids crystal residue in the vessel 1.

[0028] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A cold metathesis process for producing crude ammonium perchlorate, characterized in that, The vessel includes a vessel body (1), a feeding pipe (2), a feeding valve (3), a pH adjusting tank (4), and a discharge valve (5). The feeding pipe (2) and the feeding valve (3) are installed on the side wall of the vessel body (1). The feeding valve (3) is connected to the pH adjusting tank (4). The discharge valve (5) is installed at the bottom of the vessel body (1). A turntable (6) is rotatably installed inside the vessel body (1). Several stirring shafts (7) are rotatably installed on the bottom side of the turntable (6). A crystal removal mechanism is installed at the bottom of the turntable (6) to scrape the crystals on the inner wall of the vessel body (1) and the outer wall of the stirring shafts (7).

2. The apparatus for producing crude ammonium perchlorate by cold metathesis according to claim 1, characterized in that, The vessel body (1) is equipped with a cooling pipe, which is connected to a cooling device.

3. The apparatus for producing crude ammonium perchlorate by cold metathesis according to claim 2, characterized in that, The turntable (6) and the vessel body (1) are connected by bearings, and the turntable (6) is provided with external teeth (9) on the outer side.

4. The apparatus for producing crude ammonium perchlorate by cold metathesis according to claim 3, characterized in that, A motor (10) is installed on the vessel body (1), and a rotating tooth (11) is installed at the output end of the motor (10), which meshes with an external tooth (9).

5. The apparatus for producing crude ammonium perchlorate by cold metathesis according to claim 4, characterized in that, A pneumatic cylinder (12) is installed on the top side of the vessel body (1). The telescopic end of the pneumatic cylinder (12) passes through the turntable (6) and is rotatably connected to the center of the lifting scraper (8) through a bearing.

6. The apparatus for producing crude ammonium perchlorate by cold metathesis according to claim 5, characterized in that, A circular inner wall scraper (13) is provided on the outer side of the lifting scraper (8), and a shaft cylinder (14) is provided on the bottom side of the lifting scraper (8) and outside the stirring shaft (7), and a circular shaft wall scraper (15) is provided on the shaft cylinder (14).

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