An ammonium perchlorate synthesis reaction heat recovery device

Abstract

The utility model relates to ammonium perchlorate synthetic technical field and disclose a kind of ammonium perchlorate synthetic reaction heat recovery device, including reaction kettle, the outer surface of reaction kettle is fixedly installed with jacket, the upper surface of reaction kettle is fixedly installed with feed pipe, the right surface upper end of jacket is fixedly installed with installation box, auxiliary mechanism is arranged in the inside of jacket, auxiliary mechanism includes male round plate and scraper, first annular groove is opened in the inner wall upper end of jacket, male round plate is rotatably installed in the inner wall upper end of jacket, the lower end of male round plate is rotatably installed in the inside of first annular groove, it can be forcibly stripped adhered hydrophobic by auxiliary mechanism and mechanically scraping, ensure that hydrophobic timely discharge, prevent hydrophobic and stick to the inner wall of jacket and the outer surface of reaction kettle cause heat transfer efficiency to drop, reduce liquid film thickness, reduce thermal resistance, maintain the efficient heat transfer between jacket and reaction kettle, to improve the heating efficiency of jacket and subsequent hydrophobic heat recovery effect.

Description

Technical Field

[0001] This utility model relates to the field of ammonium perchlorate synthesis technology, specifically to a heat recovery device for ammonium perchlorate synthesis reaction. Background Technology

[0002] Ammonium perchlorate (NH4ClO4) is a colorless or white crystalline powder that is readily soluble in water. It has strong oxidizing and thermal decomposition properties, and decomposes violently when heated above 200°C, releasing gases such as nitrogen, chlorine, and oxygen, and generating a large amount of energy. It is a core component of solid rocket propellants and can be mixed with aluminum powder to form composite propellants to power spacecraft. It is also used in fireworks manufacturing and organic synthesis. However, because it is prone to explosion when mixed with organic matter and its dust is irritating to the human body, it must be handled with strict care to avoid friction and impact, and stored away from fire sources and reducing agents. It is a controlled hazardous chemical and must be handled in accordance with safety management regulations. Its preparation is mostly achieved through the double decomposition reaction of sodium perchlorate and ammonium chloride, using the difference in solubility to crystallize it.

[0003] Currently, when synthesizing ammonium perchlorate, steam needs to be introduced into the reactor to provide heat for the synthesis reaction. When steam is introduced into the jacket of the reactor, the steam generates hydrophobic water after cooling. The hydrophobic water adheres to the inner wall of the jacket and then slowly flows to the hydrophobic outlet at the lower end of the jacket to exit into the heat recovery system for heat recovery. However, some of the hydrophobic water flows out slowly. If it cannot be discharged in time and adheres to the inner wall of the jacket, it will form a water film with thermal resistance, affecting the transfer of heat from the steam to the inside of the reactor and reducing the heat transfer efficiency. Utility Model Content

[0004] Technical problems to be solved To address the shortcomings of existing technologies, this invention provides a heat recovery device for ammonium perchlorate synthesis reaction. This device solves the problem that when steam is introduced into the jacket of the reactor, the steam cools and generates condensate, which adheres to the inner wall of the jacket. The condensate then slowly flows to the condensate outlet at the lower end of the jacket and exits into the heat recovery system for heat recovery. However, some of the condensate flows out slowly and, if it cannot be discharged in time, adheres to the inner wall of the jacket, forming a water film that creates thermal resistance. This affects the transfer of heat from the steam to the reactor, resulting in a decrease in heat transfer efficiency.

[0005] (II) Technical Solution To achieve the above objectives, this utility model provides the following technical solution: a heat recovery device for ammonium perchlorate synthesis reaction, comprising a reaction vessel, a jacket fixedly installed on the outer surface of the reaction vessel, a feed pipe fixedly installed on the upper surface of the reaction vessel, and an installation box fixedly installed on the upper right surface of the jacket. An auxiliary mechanism is located inside the jacket. The auxiliary mechanism includes a convex circular plate and a scraper. A first annular groove is formed at the upper end of the inner wall of the jacket. The convex circular plate is rotatably mounted on the upper end of the inner wall of the jacket. The lower end of the convex circular plate is rotatably mounted inside the first annular groove. A second annular groove is also formed at the upper end of the inner wall of the jacket. The second annular groove is located above the first annular groove. A toothed ring is fixedly mounted on the upper end of the outer surface of the convex circular plate. The toothed ring is located inside the second annular groove. The scraper is fixedly mounted on the lower surface of the convex circular plate. The scraper is in contact with the outer surface of the reactor and the inner wall of the jacket. A connection hole is formed on the right inner wall of the second annular groove corresponding to the position of the mounting box.

[0006] Preferably, the auxiliary mechanism further includes a gear, which is rotatably mounted on the inner wall of the mounting box and meshes with a gear ring.

[0007] Preferably, a motor is fixedly mounted on the lower surface of the mounting box, and the output end of the motor rotates through the interior of the mounting box, with the motor and gears fixedly connected.

[0008] Preferably, a sealing groove is formed on the lower inner wall of the first annular groove, and a sealing ring is rotatably installed inside the sealing groove, with the upper end of the sealing ring fixedly connected to the convex circular plate.

[0009] Preferably, hot air pipes are fixedly installed on the upper end of the front surface and the lower end of the rear surface of the jacket, and both hot air pipes are connected to the interior of the jacket.

[0010] Preferably, a water outlet pipe is fixedly installed on the lower surface of the jacket, and the water outlet pipe communicates with the interior of the jacket.

[0011] (III) Beneficial Effects Compared with the prior art, this utility model provides a heat recovery device for ammonium perchlorate synthesis reaction, which has the following beneficial effects: This ammonium perchlorate synthesis reaction heat recovery device uses an auxiliary mechanism to mechanically scrape off the adhering hydrophobic material, ensuring timely drainage and preventing hydrophobic material from adhering to the inner wall of the jacket and the outer surface of the reactor, which would reduce heat transfer efficiency, decrease liquid film thickness, lower thermal resistance, and maintain efficient heat transfer between the jacket and the reactor. This improves the heating efficiency of the jacket and the subsequent heat recovery effect of the hydrophobic material. Attached Figure Description

[0012] Figure 1 This is a top view schematic diagram of the overall structure of the ammonium perchlorate synthesis reaction heat recovery device of this utility model; Figure 2 This is a cross-sectional front view of the internal structure of the ammonium perchlorate synthesis reaction heat recovery device of this utility model; Figure 3 for Figure 2 Enlarged structural diagram at point A in the middle; Figure 4 This is a cross-sectional structural diagram of the auxiliary mechanism of this utility model.

[0013] In the diagram: 1. Reactor; 2. Jacket; 3. Feed pipe; 4. Mounting box; 5. Convex circular plate; 6. Scraper; 7. First annular groove; 8. Second annular groove; 9. Gear ring; 10. Connecting hole; 11. Gear; 12. Motor; 13. Sealing groove; 14. Sealing ring; 15. Hot air pipe; 16. Water outlet pipe. Detailed Implementation

[0014] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figure 1-4 This utility model provides a new technical solution: a heat recovery device for ammonium perchlorate synthesis reaction, including a reaction vessel 1, a jacket 2 fixedly installed on the outer surface of the reaction vessel 1, a feed pipe 3 fixedly installed on the upper surface of the reaction vessel 1, and an installation box 4 fixedly installed on the upper right surface of the jacket 2. An auxiliary mechanism is located inside the jacket 2. The auxiliary mechanism includes a convex circular plate 5 and a scraper 6. A first annular groove 7 is provided at the upper end of the inner wall of the jacket 2. The convex circular plate 5 is rotatably installed at the upper end of the inner wall of the jacket 2. The lower end of the convex circular plate 5 is rotatably installed inside the first annular groove 7. A second annular groove 8 is also provided at the upper end of the inner wall of the jacket 2. The second annular groove 8 is located above the first annular groove 7. A toothed ring 9 is fixedly installed at the upper end of the outer surface of the convex circular plate 5. The toothed ring 9 is located inside the second annular groove 8. The scraper 6 is fixedly installed on the lower surface of the convex circular plate 5. The scraper 6 is in contact with the outer surface of the reactor 1 and the inner wall of the jacket 2. A connecting hole 10 is provided on the right inner wall of the second annular groove 8 at the position corresponding to the mounting box 4.

[0016] Furthermore, the auxiliary mechanism also includes a gear 11, which is rotatably mounted on the inner wall of the mounting box 4 and meshes with the gear ring 9.

[0017] Furthermore, mechanical scraping by auxiliary mechanisms can forcibly peel off the adhering hydrophobic material, ensuring timely drainage and preventing hydrophobic material from adhering to the inner wall of the jacket 2 and the outer surface of the reactor 1, which would reduce heat transfer efficiency, decrease liquid film thickness, lower thermal resistance, and maintain efficient heat transfer between the jacket and the reactor, thereby improving the heating efficiency of the jacket and the subsequent heat recovery effect of the hydrophobic material.

[0018] Furthermore, a motor 12 is fixedly installed on the lower surface of the mounting box 4. The output end of the motor 12 rotates through the interior of the mounting box 4, and the motor 12 is fixedly connected to the gear 11.

[0019] Furthermore, a sealing groove 13 is provided on the lower inner wall of the first annular groove 7, and a sealing ring 14 is rotatably installed inside the sealing groove 13. The upper end of the sealing ring 14 is fixedly connected to the convex circular plate 5.

[0020] Furthermore, hot air pipes 15 are fixedly installed on the upper end of the front surface and the lower end of the rear surface of the jacket 2, and both hot air pipes 15 are connected to the interior of the jacket 2.

[0021] Furthermore, a water outlet pipe 16 is fixedly installed on the lower surface of the jacket 2, and the water outlet pipe 16 communicates with the interior of the jacket 2.

[0022] Furthermore, when using this device, the reactants are added into the interior of reactor 1 through the feed pipe 3 at the upper end of reactor 1. High-temperature steam is introduced into the interior of the jacket through the hot gas pipe 15 at the upper end of the jacket 2, flowing around the outer wall of reactor 1 and heating the ammonium perchlorate synthesis reaction inside the reactor through heat conduction. After releasing heat, the steam gradually condenses into hydrophobic water (condensate), which adheres to the inner wall of the jacket and the outer wall of the reactor. The condensed hydrophobic water accumulates at the bottom of the jacket due to gravity. The outlet pipe 16 at the bottom of the jacket 2 is connected to an external heat recovery system. When the hydrophobic water accumulates to... When a certain amount is reached, the condensate is discharged from the jacket through the outlet pipe 16. The discharged condensate still carries a high temperature, enabling the external heat recovery system to recover heat. After the motor 12 starts, it drives the gear 11 to rotate. The gear 11 meshes with the gear ring 9, driving the convex circular plate 5 to rotate in the first annular groove 7. The scraper 6 below the convex circular plate 5 rotates synchronously with it. The inner side of the scraper is close to the outer wall of the reactor 1, and the outer side is close to the inner wall of the jacket 2, continuously scraping off the hydrophobic liquid film or droplets attached to the surfaces of both, causing them to fall to the bottom of the jacket at an accelerated speed and be discharged through the outlet pipe 16 for heat recovery.

[0023] Structural Description: Reactor 1: As the core container for the synthesis of ammonium perchlorate, it provides the reaction space. Its outer surface is fitted with a jacket 2 to complete the heating and heat exchange process. Jacket 2: Surrounds the outside of the reactor 1, and is heated by steam through the hot gas pipe 15. The condensate is discharged to the external heat recovery system through the water outlet pipe 16 to realize heat transfer and recovery. Feed pipe 3: Fixed to the upper surface of reactor 1, used to transport the raw materials required for the synthesis of ammonium perchlorate into reactor 1 to ensure the continuous reaction; Mounting box 4: Installed on the upper right surface of the sleeve 2, with a built-in gear 11 and a motor 12 installed at the lower end, providing installation space and power source for the auxiliary mechanism; Convex circular plate 5: Rotatably installed on the upper end of the inner wall of the jacket 2, with the lower end placed in the first annular groove 7, driving the scraper 6 to rotate and scrape off the hydrophobic surface of the jacket 2 and the reactor 1; Scraper 6: Fixed to the lower surface of the convex circular plate 5, it contacts the inner wall of the jacket 2 and the outer surface of the reactor 1 to scrape off water and improve heat transfer efficiency; First annular groove 7: It is opened on the upper end of the inner wall of the jacket 2 to provide a rotation track for the lower end of the convex circular plate 5, ensuring its stable rotation; Second annular groove 8: Located above the first annular groove 7, it accommodates the gear ring 9, provides rotation space for the gear ring 9, and cooperates with gear 11 to realize transmission; Gear ring 9: Fixed on the upper end of the outer surface of the convex circular plate 5, meshing with gear 11, and driving the convex circular plate 5 to rotate under the drive of gear 11; Connection hole 10: It is opened on the right inner wall of the second annular groove 8, connecting the mounting box 4 and the second annular groove 8, so that the gear 11 passes through and meshes with the gear ring 9 for transmission; Gear 11: Installed on the inner wall of the mounting box 4, meshing with the gear ring 9, transmitting the power of the motor 12 to the gear ring 9, driving the auxiliary mechanism to operate; Motor 12: Fixed to the lower surface of the mounting box 4, it provides power to gear 11 and drives the convex circular plate 5 and scraper 6 of the auxiliary mechanism to rotate; Sealing groove 13: Located on the inner wall of the first annular groove 7, a sealing ring 14 is installed to prevent steam leakage in the jacket 2 and ensure sealing performance; Sealing ring 14: Installed in the sealing groove 13, its upper end is connected to the convex circular plate 5, and rotates with the convex circular plate 5, while also playing a sealing role; Hot gas pipe 15: Installed at the upper end of the front surface and the lower end of the rear surface of the jacket 2, it is used to introduce steam to provide heat for the reaction in the reactor 1; Water outlet pipe 16: fixed on the lower surface of jacket 2, connected to the external heat recovery system, drains the water inside jacket 2, and realizes heat recovery and utilization.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A heat recovery device for ammonium perchlorate synthesis reaction, comprising a reactor (1), a jacket (2) fixedly installed on the outer surface of the reactor (1), and a feed pipe (3) fixedly installed on the upper surface of the reactor (1), characterized in that: The upper right surface of the sleeve (2) is fixedly mounted with an installation box (4); The auxiliary mechanism is located inside the jacket (2). The auxiliary mechanism includes a convex circular plate (5) and a scraper (6). A first annular groove (7) is provided on the upper end of the inner wall of the jacket (2). The convex circular plate (5) is rotatably installed on the upper end of the inner wall of the jacket (2). The lower end of the convex circular plate (5) is rotatably installed inside the first annular groove (7). A second annular groove (8) is also provided on the upper end of the inner wall of the jacket (2). The second annular groove (8) is located above the first annular groove (7). A toothed ring (9) is fixedly installed on the upper end of the outer surface of the convex circular plate (5). The toothed ring (9) is located inside the second annular groove (8). The scraper (6) is fixedly installed on the lower surface of the convex circular plate (5). The scraper (6) is in contact with the outer surface of the reactor (1) and the inner wall of the jacket (2). A connecting hole (10) is provided on the right inner wall of the second annular groove (8) corresponding to the position of the mounting box (4).

2. The device for recovering heat of synthesis reaction of ammonium perchlorate according to claim 1, characterized in that: The auxiliary mechanism also includes a gear (11), which is rotatably mounted on the inner wall of the mounting box (4) and meshes with the gear ring (9).

3. The device for recovering heat of synthesis reaction of ammonium perchlorate according to claim 2, characterized in that: A motor (12) is fixedly installed on the lower surface of the mounting box (4). The output end of the motor (12) rotates through the interior of the mounting box (4). The motor (12) is fixedly connected to the gear (11).

4. The device for recovering heat of synthesis reaction of ammonium perchlorate according to claim 1, characterized in that: A sealing groove (13) is provided on the lower inner wall of the first annular groove (7). A sealing ring (14) is rotatably installed inside the sealing groove (13). The upper end of the sealing ring (14) is fixedly connected to the convex circular plate (5).

5. The device for recovering heat of synthesis reaction of ammonium perchlorate according to claim 1, characterized in that: Hot air pipes (15) are fixedly installed on the upper end of the front surface and the lower end of the rear surface of the jacket (2), and both hot air pipes (15) are connected to the interior of the jacket (2).

6. The device for recovering heat of synthesis reaction of ammonium perchlorate according to claim 1, characterized in that: A water outlet pipe (16) is fixedly installed on the lower surface of the jacket (2), and the water outlet pipe (16) communicates with the interior of the jacket (2).

Images