A device for producing ammonium perchlorate by cold double decomposition and its use method

Abstract

The present invention belongs to the technical field of ammonium perchlorate production, and relates to a cold-method double decomposition device for producing ammonium perchlorate and a method of use. The device in the present invention includes a reactor and a stirring component and a temperature control component arranged therein; a partition and a filter plate are arranged in the reactor; the filter plate is located below the partition and is rotatably installed in the reactor, a mounting frame is fixedly installed in the reactor, a conveyor belt is arranged in the mounting frame, and a plurality of scrapers are arranged at intervals on the conveyor belt. Ammonium perchlorate is collected while filtering, which is beneficial to improving production efficiency. At the same time, the ammonium perchlorate in the filter holes on the filter plate in the closed space is extracted, and the filter plate is unblocked, which is further beneficial to improving the filtration efficiency of the filter plate and improving the generation efficiency. When the filter plate in the closed space is unblocked, part of the air below the filter plate is extracted to form suction filtration, thereby further improving the filtration efficiency of the filter plate.

Description

Technical Field

[0001] The invention belongs to the technical field of ammonium perchlorate production, and relates to a device for producing ammonium perchlorate by cold double decomposition and a use method thereof. Background Art

[0002] Cold metathesis is a chemical production method that usually involves mixing two or more substances at a relatively low temperature and using the chemical reaction between them to produce the target product. In the production of ammonium perchlorate, this method can effectively control the reaction conditions and improve the purity and quality of the product.

[0003] In the conventional preparation process, after the double decomposition is completed, the liquid containing ammonium perchlorate crystals after the reaction needs to be filtered and then collected. However, since the solids retained on the filter plate cannot be collected in time during the filtration process, the liquid flows out slowly, takes a long time, and affects the production efficiency.

[0004] In order to solve the above problems, the present invention provides a device for producing ammonium perchlorate by cold double decomposition and a method for using the device. Summary of the invention

[0005] In order to solve the problems existing in the background technology, the present invention proposes a device for producing ammonium perchlorate by cold double decomposition and a method for using the device.

[0006] In order to achieve the above-mentioned purpose, the technical scheme adopted by the present invention is as follows: a device for producing ammonium perchlorate by cold double decomposition, comprising a reactor and a stirring assembly and a temperature control assembly arranged therein; a partition and a filter plate are arranged in the reactor; a discharge port is eccentrically opened on the partition, and a solenoid valve is installed at the discharge port; the filter plate is located below the partition and rotatably installed in the reactor, a mounting frame is fixedly installed in the reactor, a conveyor belt is arranged in the mounting frame, a plurality of scrapers are arranged at intervals on the conveyor belt, and the scrapers are sealed and slidably matched with the filter plate; a suction hole is opened on the mounting frame; the suction hole is connected to a suction mechanism; the conveyor belt and the filter plate are arranged in linkage; the scraper scrapes and collects the ammonium perchlorate on the filter plate, and the two scrapers, the filter plate, the mounting frame and the conveyor belt enclose a closed space, and the ammonium perchlorate in the space is extracted through the suction hole.

[0007] Furthermore, a support plate is fixedly installed in the mounting frame, and both ends of the support plate are rotatably connected to rotating rods; the conveyor belt is wound around the support plate.

[0008] Furthermore, the temperature control component includes a hot water pipe and a cold water pipe; a accommodating cavity is opened on the side wall of the reactor, and the hot water pipe and the cold water pipe are both arranged in the accommodating cavity; a temperature sensor is arranged in the reactor, the upper end of the hot water pipe is connected to the first water inlet pipe, and the lower end is connected to the first water outlet pipe, the upper end of the cold water pipe is connected to the second water inlet pipe, and the lower end is connected to the second water outlet pipe; the hot water pipe and the cold water pipe are both provided with flow control valves, and the flow control valve and the temperature sensor are both electrically connected to the controller.

[0009] Furthermore, the stirring assembly includes a first motor and a stirring rod; the stirring rod is rotatably arranged in the reactor and is located above the partition; the first motor is fixedly installed at the top of the reactor, and the first motor is drivingly connected to the stirring rod.

[0010] Furthermore, a retaining ring is fixedly installed on the upper end of the filter plate, and the retaining ring is fixedly connected to the end face gear ring. A second motor is fixedly installed on the outer wall of the reactor. The output shaft of the second motor extends into the reactor and is fixedly installed with a first gear, and the first gear is meshed with the end face gear ring.

[0011] Furthermore, the end face gear ring is meshedly connected with a second gear, and the second gear is connected to one of the conveyor belts via a reducer.

[0012] Furthermore, a support block is fixedly connected to one end of the scraper close to the conveyor belt.

[0013] Furthermore, the hot water pipes and the cold water pipes are arranged alternately.

[0014] A method for using a cold-process double decomposition device for producing ammonium perchlorate in the present invention comprises the following steps:

[0015] S1, adding raw materials above the baffle in the reactor, stirring the raw materials by a stirring component, and keeping the raw materials at a suitable reaction temperature by a temperature control component; the raw materials react in the reactor to generate ammonium perchlorate, and the ammonium perchlorate precipitates;

[0016] S2. After the reaction is finished, the filter plate is rotated and the solenoid valve is opened; the liquid above the partition drives the ammonium perchlorate to fall onto the filter plate, and the ammonium perchlorate is retained on the filter plate after being filtered by the filter plate;

[0017] S3, at the same time, the conveyor belt drives the scraper to move, and the scraper scrapes and collects the ammonium perchlorate on the filter plate;

[0018] S4, two scrapers, filter plates, mounting frames and conveyor belts form a closed space, in which the ammonium perchlorate is extracted through the suction holes; the filter holes of the filter plates in the closed space are unblocked; the air under the filter plates is partially extracted, thereby forming suction filtration.

[0019] Compared with the prior art, the present invention has the following beneficial effects: when the scraper moves to the lower side of the conveyor belt, the ammonium perchlorate on the filter plate is scraped and collected, and then the two scrapers located at the lower side of the conveyor belt, the mounting frame, the conveyor belt and the filter plate enclose the scraped ammonium perchlorate in a closed space, and the ammonium perchlorate in the closed space is extracted. The ammonium perchlorate is collected while filtering, which is conducive to improving production efficiency.

[0020] At the same time, the ammonium perchlorate in the filter holes on the filter plate in the closed space is extracted, and the filter plate is unblocked, which is further beneficial to improve the filtration efficiency of the filter plate and improve the generation efficiency. When the filter plate in the closed space is unblocked, part of the air under the filter plate is extracted to form suction filtration, thereby further improving the filtration efficiency of the filter plate.

[0021] The filter plate is rotated so that the liquid in the reaction chamber can fall evenly on the filter plate, thereby improving the filtering efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the internal structure of the present invention;

[0024] Figure 3 The present invention Figure 2 A magnified view of part A;

[0025] Figure 4 The present invention Figure 2 A magnified view of part B;

[0026] Figure 5 It is a structural schematic diagram of the mounting frame of the present invention;

[0027] Figure 6 The present invention Figure 5 Enlarged view of part C;

[0028] Figure 7 The present invention Figure 5 A magnified view of the D portion;

[0029] Figure 8 is a cross-sectional view of the mounting frame of the present invention;

[0030] Fig. 9 The present invention Figure 8 A magnified view of part E;

[0031] Fig.10 It is a structural schematic diagram of the filter plate in the present invention;

[0032] Fig.11It is a schematic diagram of the state when the first scraper and the second scraper are both located on the upper side of the conveyor belt in the present invention;

[0033] Fig.12 It is a schematic diagram of the state when the first scraper and the third scraper are both at the lower side of the conveyor belt in the present invention.

[0034] In the figure: 1. reactor; 2. support leg; 3. partition; 4. solenoid valve; 5. feed port; 6. first motor; 7. stirring rod; 8. first water inlet pipe; 9. second water inlet pipe; 10. first water outlet pipe; 11. second water outlet pipe; 12. rotating rail; 13. filter plate; 14. retaining ring; 15. end gear ring; 16. second motor; 17. first gear; 18. mounting frame; 19. support plate; 20. rotating rod; 21. second gear; 22. conveyor belt; 23. scraper; 2301, first scraper; 2302, second scraper; 2303, third scraper; 24. support block; 25. suction hole; 26. vacuum tube; 27. discharge pipe; 28. hot water pipe; 29. ​​cold water pipe; 30. reducer. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] like Figure 1-Figure 12 As shown, the technical solution adopted by the present invention is as follows: a cold-method double decomposition device for producing ammonium perchlorate comprises a reactor 1, a stirring assembly and a temperature control assembly. The upper end of the reactor 1 is provided with a feed inlet 5, the lower end is provided with a discharge pipe 27, and a control valve is installed on the discharge pipe 27. The lower end of the reactor 1 is provided with a plurality of support legs 2.

[0037] The reactor 1 is fixedly provided with a partition 3, and the space above the partition 3 in the reactor 1 is a reaction chamber, and the main raw materials: sodium perchlorate solution and ammonium chloride solution are added into the reaction chamber through the feed port 5. The sodium perchlorate solution and the ammonium chloride solution undergo double decomposition reaction in the reaction chamber to generate ammonium perchlorate and sodium chloride.

[0038] The stirring assembly is arranged in the reaction chamber. The stirring assembly includes a first motor 6 and a stirring rod 7. The first motor 6 is fixedly mounted on the top of the reactor 1, and the stirring rod 7 is rotatably mounted in the reactor 1. The output shaft of the first motor 6 extends into the reactor 1 and is drivingly connected to the stirring rod 7.

[0039] The temperature control component is arranged on the reactor 1 and is used to control the temperature of the reaction chamber so that the reaction proceeds smoothly.

[0040] The temperature control assembly includes a hot water pipe 28 and a cold water pipe 29. A housing cavity is provided on the side wall of the reactor 1 located above the partition 3, and the hot water pipe 28 and the cold water pipe 29 are staggered in the housing cavity. The upper end of the hot water pipe 28 is connected to the first water inlet pipe 8, and the lower end is connected to the first water outlet pipe 10. The upper end of the cold water pipe 29 is connected to the second water inlet pipe 9, and the lower end is connected to the second water outlet pipe 11. Flow control valves are installed on the first water inlet pipe 8 and the second water inlet pipe 9. A temperature sensor is provided in the reaction chamber for monitoring the temperature in the reaction chamber at any time. The temperature sensor and the flow control valve are both electrically connected to the controller.

[0041] A rotating rail 12 is fixedly installed in the reactor 1, and a filter plate 13 is rotatably installed on the rotating rail 12. The filter plate 13 is coaxially arranged with the reactor 1. A retaining ring 14 is coaxially fixedly connected to the filter plate 13. An end face gear ring 15 is fixedly installed on the upper end of the retaining ring 14. A second motor 16 is fixedly installed on the reactor 1, and the output shaft of the second motor 16 extends into the reactor 1 and is coaxially fixedly connected with a first gear 17, which is meshed with the end face gear ring 15.

[0042] A mounting frame 18 is fixedly installed in the reactor 1, and the mounting frame 18 is in an inverted C shape. The mounting frame 18 is located between the partition 3 and the filter plate 13. A support plate 19 is fixedly installed in the mounting frame 18, and mounting grooves are provided at both ends of the support plate 19, and a rotating rod 20 is rotatably installed in the mounting groove. A conveyor belt 22 is wound around the support plate 19, and the conveyor belt 22 and the support plate 19 are slidably matched. A plurality of scrapers 23 are arranged at intervals on the conveyor belt 22, and the scrapers 23 and the filter plate 13 are sealed and slidably matched. A support block 24 is fixedly connected to one end of the scraper 23 close to the conveyor belt 22, and the support block 24 is located on one side of the moving direction of the scraper 23. The conveyor belt 22 and the filter plate 13 are arranged in linkage.

[0043] The end of one of the rotating rods 20 is connected to a reducer 30. The input end of the reducer 30 is connected to a second gear 21, and the second gear 21 meshes with the end face gear ring 15. The end face gear ring 15 drives the second gear 21 to rotate, and the second gear 21 drives the rotating rod 20 to rotate through the reducer 30, and then the conveyor belt 22 moves. The reducer 30 is a prior art and is not described here. The second gear 21 drives the rotating rod 20 to rotate after being decelerated by the reducer 30, and then the movement speed of the conveyor belt 22 is less than the movement speed of the filter plate 13.

[0044] The mounting frame 18 is provided with a suction hole 25 , which is connected to a vacuum tube 26 , and the vacuum tube 26 is connected to an external suction mechanism.

[0045] Working principle:

[0046] When in use, sodium perchlorate solution and ammonium chloride solution are added into the reaction chamber through the feed port 5, and the sodium perchlorate solution and the ammonium chloride solution undergo double decomposition reaction in the reaction chamber to generate ammonium perchlorate and sodium chloride. The first motor 6 is started, and the stirring rod 7 rotates to make the raw materials in the reaction chamber more evenly mixed, so that the reaction is more complete, and the ammonium perchlorate is precipitated.

[0047] Hot water is injected into the hot water pipe 28 through the first water inlet pipe 8, and cold water is injected into the cold water pipe 29 through the second water inlet pipe 9, so that the reaction chamber is maintained at a suitable temperature, the reaction quality is improved, and it is beneficial to the precipitation of ammonium perchlorate. Generally, the temperature of the reaction chamber is controlled between 0-10°C.

[0048] After the reaction is completed, the second motor 16 is turned on, and the second motor 16 drives the filter plate 13 to rotate through the first gear 17 and the end face gear ring 15. The solenoid valve 4 is opened, and the liquid in the reaction chamber drives the ammonium perchlorate to flow out through the solenoid valve 4 and fall on the filter plate 13. After being filtered by the filter plate 13, the ammonium perchlorate is retained on the filter plate 13. As the filter plate 13 rotates, the solution in the reaction chamber falls on different parts of the filter plate 13, which is beneficial to improve the filtering efficiency of the filter plate 13.

[0049] At the same time, the end face gear ring 15 drives the second gear 21 to rotate, and the second gear 21 drives the corresponding rotating rod 20 to rotate through the reducer 30, the conveyor belt 22 moves around the support plate 19, and then the scraper 23 moves, and the scraper 23 moves along the upper end surface of the filter plate 13 to scrape and collect the ammonium perchlorate on the filter plate 13.

[0050] In this embodiment, there are three scrapers 23, and the three scrapers 23 are evenly spaced and arranged on the conveyor belt 22. Fig.11 , Fig.12 As shown, for the convenience of description, the three scrapers 23 are named as the first scraper 2301, the second scraper 2302 and the third scraper 2303. The filter plate 13 rotates clockwise, the conveyor belt 22 moves clockwise, and when the scraper 23 moves to the lower side of the conveyor belt 22, that is, the side close to the filter plate 13, the scraper 23 moves from right to left. The movement speed of the filter plate 13 is greater than that of the scraper 23, and the filter plate 13 moves to the left relative to the scraper 23. Fig.11In the embodiment, the third scraper 2303 scrapes the ammonium perchlorate on the filter plate 13, and the scraped crystals are located on the right side of the third scraper 2303, and the third scraper 2303 moves to the left. When the first scraper 2301 gradually moves from the upper side of the conveyor belt 22 to the right end of the lower side of the conveyor belt 22, the first scraper 2301 gradually fits with the filter plate 13. After the first scraper 2301 fits with the filter plate 13, the first scraper 2301 scrapes the ammonium perchlorate on the filter plate 13. The scraped ammonium perchlorate is gathered on the right side of the first scraper 2301. At this time, the suction hole 25 is between the third scraper 2303 and the first scraper 2301. The first scraper 2301, the third scraper 2303, the mounting frame 18, the conveyor belt 22 and the filter plate 13 enclose a closed space, and the ammonium perchlorate between the first scraper 2301 and the third scraper 2303 is in the closed space.

[0051] Through the suction mechanism, the ammonium perchlorate between the first scraper 2301 and the third scraper 2303 is discharged through the suction hole 25 and the vacuum tube 26.

[0052] When the ammonium perchlorate between the first scraper 2301 and the third scraper 2303 is extracted, the ammonium perchlorate blocked in the filter holes of the filter plate 13 between the first scraper 2301 and the third scraper 2303 is also extracted, which has the effect of clearing the filter plate 13, thereby helping to improve the filtering efficiency of the filter plate 13.

[0053] After the filter holes are unblocked, the air in the space below the filter plate 13 is extracted, so that the air pressure below the filter plate 13 is reduced, forming suction filtration, so that the liquid on the filter plate 13 flows downward quickly, improving the filtration efficiency, and then improving the production efficiency.

[0054] Accordingly, as the filter plate 13 and the conveyor belt 22 move, the scraper 23 scrapes and collects the ammonium perchlorate on the filter plate 13, and then the scraped ammonium perchlorate is in a closed space surrounded by the two scrapers 23, the mounting frame 18, the conveyor belt 22 and the filter plate 13 and is extracted, which is beneficial to improving production efficiency. At the same time, the filter plate 13 is unblocked, further improving production efficiency, and reducing the air pressure below the filter plate 13 to form suction filtration, improving the filtration efficiency of the filter plate 13, and thus improving production efficiency.

[0055] The present invention also includes a method for using a cold-process double decomposition device for producing ammonium perchlorate, comprising the following steps:

[0056] S1. Add raw materials above the partition 3 in the reactor 1, stir the raw materials through the stirring component, and keep the raw materials at a suitable reaction temperature through the temperature control component; the raw materials react in the reactor 1 to generate ammonium perchlorate and sodium chloride, and ammonium perchlorate is precipitated.

[0057] S2. After the reaction is finished, the filter plate 13 is rotated and the electromagnetic valve 4 is opened; the liquid above the partition plate 3 drives the ammonium perchlorate to fall onto the filter plate 13, and the ammonium perchlorate is retained on the filter plate 13 after being filtered by the filter plate 13.

[0058] S3. At the same time, the conveyor belt 22 drives the scraper 23 to move, and the scraper 23 scrapes and collects the ammonium perchlorate on the filter plate 13.

[0059] S4, two scrapers 23, filter plate 13, mounting frame 18 and conveyor belt 22 enclose a closed space, in which the ammonium perchlorate is extracted through suction hole 25; the filter holes of filter plate 13 in the closed space are unblocked; the air below filter plate 13 is partially extracted, thereby forming suction filtration.

[0060] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A cold-process double decomposition device for producing ammonium perchlorate, comprising a reactor (1) and a stirring component and a temperature control component arranged therein; characterized in that: The reactor (1) is provided with a partition (3) and a filter plate (13); a material discharge port is eccentrically provided on the partition (3), and a solenoid valve (4) is installed at the material discharge port; the filter plate (13) is located below the partition (3) and is rotatably installed in the reactor (1); a mounting frame (18) is fixedly installed in the reactor (1), a conveyor belt (22) is provided in the mounting frame (18), a plurality of scrapers (23) are arranged at intervals on the conveyor belt (22), and the scrapers (23) and the filter plate (13) are sealingly slidably matched; a suction hole (25) is provided on the mounting frame (18); the suction hole (25) is connected to a suction mechanism; the conveyor belt (22) and the filter plate (13) are arranged in linkage; The filter plate (13) rotates clockwise, the conveyor belt (22) moves clockwise, and when the scraper (23) moves to the lower side of the conveyor belt (22), i.e., to the side close to the filter plate (13), the scraper (23) moves from right to left, the movement speed of the filter plate (13) is greater than the movement speed of the scraper (23), and the filter plate (13) moves leftward relative to the scraper (23); the scraper (23) scrapes off the ammonium perchlorate on the filter plate (13), and the scraped off ammonium perchlorate is located on the right side of the scraper (23); as the conveyor belt (22) moves, the scraper on the upper side of the conveyor belt (22) moves to the lower right end of the conveyor belt (22) and fits with the filter plate (13), and the scraped off ammonium perchlorate is in a closed space surrounded by the two scrapers (23) on the lower side of the conveyor belt (22), the filter plate (13), the mounting frame (18) and the conveyor belt (22), and is discharged through the suction hole (25).

2. A cold-method double decomposition device for producing ammonium perchlorate according to claim 1, characterized in that: A support plate (19) is fixedly mounted inside the mounting frame (18), and both ends of the support plate (19) are rotatably connected to a rotating rod (20); the conveyor belt (22) is wound around the support plate (19).

3. A cold-method double decomposition device for producing ammonium perchlorate according to claim 1, characterized in that: The temperature control component comprises a hot water pipe (28) and a cold water pipe (29); a receiving cavity is provided on the side wall of the reactor (1), and the hot water pipe (28) and the cold water pipe (29) are both arranged in the receiving cavity; a temperature sensor is arranged in the reactor (1); the upper end of the hot water pipe (28) is connected to the first water inlet pipe (8), and the lower end is connected to the first water outlet pipe (10); the upper end of the cold water pipe (29) is connected to the second water inlet pipe (9), and the lower end is connected to the second water outlet pipe (11); the hot water pipe (28) and the cold water pipe (29) are both provided with flow control valves, and the flow control valves and the temperature sensor are both electrically connected to the controller.

4. A cold-method double decomposition device for producing ammonium perchlorate according to claim 1, characterized in that: The stirring assembly comprises a first motor (6) and a stirring rod (7); the stirring rod (7) is rotatably arranged in the reactor (1) and is located above the partition (3); the first motor (6) is fixedly mounted on the top of the reactor (1), and the first motor (6) is drivingly connected to the stirring rod (7).

5. A cold-method double decomposition device for producing ammonium perchlorate according to claim 1, characterized in that: A retaining ring (14) is fixedly mounted on the upper end of the filter plate (13), and the retaining ring (14) is fixedly connected to an end face gear ring (15). A second motor (16) is fixedly mounted on the outer wall of the reactor (1), and an output shaft of the second motor (16) extends into the reactor (1) and is fixedly mounted with a first gear (17), and the first gear (17) is meshed with the end face gear ring (15).

6. A cold-method double decomposition device for producing ammonium perchlorate according to claim 5, characterized in that: The end face gear ring (15) is meshingly connected with a second gear (21), and the second gear (21) is connected to one of the conveyor belts (22) via a reducer (30).

7. The cold-method double decomposition device for producing ammonium perchlorate according to claim 1, characterized in that: One end of the scraper (23) close to the conveyor belt (22) is fixedly connected to a support block (24).

8. The cold-method double decomposition device for producing ammonium perchlorate according to claim 3, characterized in that: The hot water pipes (28) and the cold water pipes (29) are arranged alternately.

9. A method for using the cold double decomposition device for producing ammonium perchlorate as claimed in claim 1, characterized in that: The following steps are included: S1, adding raw materials to the upper part of the partition (3) in the reactor (1), stirring the raw materials by means of a stirring component, and keeping the raw materials at a reaction temperature by means of a temperature control component; the raw materials react in the reactor (1) to generate ammonium perchlorate, and the ammonium perchlorate precipitates; S2, after the reaction is finished, the filter plate (13) is rotated and the electromagnetic valve (4) is opened; the liquid above the partition plate (3) drives the ammonium perchlorate to fall onto the filter plate (13), and the ammonium perchlorate is filtered by the filter plate (13) and retained on the filter plate (13); S3, at the same time, the conveyor belt (22) drives the scraper (23) to move, and the scraper (23) scrapes and collects the ammonium perchlorate on the filter plate (13); S4, two scrapers (23), the filter plate (13), the mounting frame (18) and the conveyor belt (22) enclose a closed space, and the ammonium perchlorate in the space is extracted through the suction hole (25); the filter holes of the filter plate (13) in the closed space are unblocked; and the air below the filter plate (13) is partially extracted, thereby forming suction filtration.

Images