High-temperature dissolving device for full water-soluble potassium sulfate production

Abstract

The utility model discloses a high-temperature dissolving device for full water-soluble potassium sulfate production, and belongs to the technical field of potassium sulfate production. The potassium sulfate production device overcomes the defects that in the prior art, a traditional potassium sulfate production device contains many impurities and is low in production quality. The main body structure comprises an upper reaction furnace and a lower reaction furnace, and impurity removal assemblies are arranged in the upper reaction furnace and the lower reaction furnace; the impurity removal assembly comprises a stirring motor and a sealing rotating plate, a driving shaft of the stirring motor penetrates through the top end of the upper reaction furnace and is connected with a transmission rod I, and the sealing rotating plate is rotationally connected with the upper reaction furnace and the lower reaction furnace; a fixed filter screen is installed at the upper position in the lower reaction furnace, cleaning rotating plates are movably installed at the positions, close to the two sides, of the top face of the fixed filter screen, the opposite sides of the two cleaning rotating plates are fixedly connected with a first transmission rod, and an impurity removing frame is connected to the positions, close to the upper portion and the front and rear ends, of the outer ring of the first transmission rod through fixing bolts; and mounting grooves penetrate through the front and rear ends of the impurity removal frame. The device is mainly used for potassium sulfate production.

Description

Technical Field

[0001] The utility model belongs to the technical field of potassium sulfate production, and in particular relates to a high-temperature dissolving device for producing fully water-soluble potassium sulfate. Background Art

[0002] Potassium fertilizer is one of the three essential nutrients for the growth and development of crops. The method for producing fully water-soluble potassium sulfate mainly relies on the reaction of sulfuric acid and potassium chloride. That is, potassium chloride and sulfuric acid and other raw materials are put into a potassium sulfate reactor according to a certain ratio and reacted at high temperature. The potassium sulfate generated by the reaction is discharged from the discharge port, and then cooled, crushed, granulated, packaged and other processes are carried out;

[0003] For example, a Chinese invention patent with publication number "CN204111340U" discloses a potassium sulfate production device, including a reactor, a reactor provided with a potassium chloride feed inlet, a sulfuric acid feed inlet, a solid discharge inlet, and a reaction gas outlet, a potassium sulfate discharge mechanism connected to the solid discharge inlet of the reactor through a bucket lifting mechanism, a cooling mechanism connected to the reaction gas outlet of the reactor, a sulfuric acid gas washing mechanism, a hydrogen chloride gas absorption mechanism, and a tail gas washing tower provided with an exhaust port. Although a material drying mechanism is provided at the potassium chloride feed port constituting the device, the moisture content of the potassium chloride after drying is greatly reduced. When reacting with sulfuric acid in the reactor, not only the reaction time can be greatly shortened and the production efficiency can be improved, but also the corrosion of the generated hydrochloric acid vapor to the reactor body is reduced, thereby extending the service life of the reactor. However, since potassium chloride may contain certain impurities when added, the device cannot filter the melted potassium chloride. Potassium sulfate after production may contain more impurities, thereby reducing the production quality. Moreover, after long-term processing and production, impurity residues are likely to occur, and the impurities are likely to solidify and adhere to the inner wall of the reactor. It is difficult for the device to clean the inner wall of the reactor during use. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a high-temperature dissolving device for producing fully water-soluble potassium sulfate.

[0005] In order to achieve the above purpose, the utility model is implemented by adopting the following technical solutions:

[0006] A high-temperature dissolving device for producing fully water-soluble potassium sulfate comprises an upper reaction furnace and a lower reaction furnace, wherein the upper reaction furnace is installed above the lower reaction furnace, and impurity removal components are arranged inside the upper reaction furnace and the lower reaction furnace;

[0007] The impurity removal component comprises a stirring motor and a sealing rotating plate. The stirring motor is installed at the top center position of the upper reaction furnace, and the driving shaft of the stirring motor passes through the top of the upper reaction furnace and is connected with a transmission rod 1. The sealing rotating plate is installed between the upper and lower opposite surfaces of the upper reaction furnace and the lower reaction furnace, and the sealing rotating plate is rotatably connected to the upper and lower reaction furnaces; a fixed filter screen is installed at the upper position inside the lower reaction furnace, and a cleaning rotating plate is movably installed at the top surface of the fixed filter screen at the two sides, and the opposite sides of the two cleaning rotating plates are fixedly connected to the transmission rod 1, and the outer ring of the transmission rod 1 is connected to the impurity removal frame at the top and the front and rear ends through fixing bolts, and the front and rear ends of the impurity removal frame are provided with mounting grooves, and a movable filter screen is arranged in the mounting groove; the front and rear ends of the sealing rotating plate are fixedly connected with a guide pipe at the center position, the lower part of the impurity removal frame is inclined to match the guide pipe, and the end of the impurity removal frame away from the transmission rod 1 is connected to the guide pipe.

[0008] Preferably, one end of the guide tube away from the sealing rotating plate is connected to a collecting tube, and one end of the collecting tube away from the sealing rotating plate is provided with a transparent observation window.

[0009] Preferably, a sealing cap is threadedly connected to the bottom end of the collecting tube.

[0010] Preferably, the end of the transmission rod one passes through the upper and lower ends of the fixed filter screen and is connected to the transmission rod two, the lower position of the outer ring of the transmission rod two is fixedly connected to the stirring rod through the mounting frame, and the lower part of the transmission rod two is installed with a spoiler block, and an extension rod is slidably installed through the side of the stirring rod away from the transmission rod two, and the end of the extension rod away from the stirring rod is installed with a scraper one through a mounting seat one.

[0011] Preferably, a thrust spring is arranged around the outer ring of the extension rod, and two ends of the thrust spring are respectively in contact with the stirring rod and the mounting seat.

[0012] Preferably, a fixed rod is installed at the top of the two impurity removal frames and at one end away from the transmission rod one, a movable rod is slidably installed through the fixed rod and at one end away from the transmission rod one, and a scraper two is installed at one end of the movable rod away from the fixed rod through a mounting seat two.

[0013] Preferably, a clamping spring is provided around the outer ring of the movable rod, and the two ends of the clamping spring are respectively abutted against the fixed rod and the mounting seat 2, the end of the scraper 1 away from the transmission rod 2 is in contact with the inner wall of the lower reactor, and the end of the scraper 2 away from the transmission rod 1 is in contact with the inner wall of the upper reactor.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The utility model is provided with an impurity removal component. When in use, the scraper plate 1 and the scraper plate 2 follow the rotation of the transmission rod 1 and the transmission rod 2, so that the inner wall of the upper reaction furnace and the lower reaction furnace can be scraped off during production, and the residual crystals can be scraped off to reduce the probability of their adhesion. The movable filter screen and the cleaning rotating plate are provided to facilitate filtering the reacted potassium chloride liquid and screen out impurities.

[0016] 2. Because the movable filter is installed in the impurity removal frame, the impurity removal frame is connected to the guide pipe, and the impurity removal frame is inclined, it is convenient to guide the collected impurities into the collection pipe for cleaning. In the process of use, the impurity removal frame rotates in the upper reactor to stir the potassium chloride. At the same time, it is not necessary to wait for the liquid to pass through the movable filter, which is convenient for improving the filtering efficiency.

[0017] 3. By rotating the stirring rod in the lower reaction furnace, the filtered liquid can be stirred and mixed. At the same time, when stirring continuously, the inclined spoiler block can avoid the formation of vortex inside the lower reaction furnace and prevent the crystallized potassium chloride from gathering in the vortex, so as to improve the reaction effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a cross-sectional view of the internal structure of the upper reaction furnace and the lower reaction furnace in the overall structure of the utility model;

[0020] Figure 3 It is a schematic diagram of the connection between the stirring rod and the extension rod in the overall structure of the utility model.

[0021] In the figure: 1. upper reactor; 2. lower reactor; 3. impurity removal component; 4. stirring motor; 5. transmission rod 1; 6. impurity removal frame; 7. movable filter; 8. sealing rotating plate; 9. guide pipe; 10. collecting pipe; 11. fixed filter; 12. cleaning rotating plate; 13. transmission rod 2; 14. spoiler; 15. stirring rod; 16. extension rod; 17. scraper 1; 18. fixed rod; 19. scraper 2; 20. mounting seat 1; 21. mounting seat 2. DETAILED DESCRIPTION

[0022] The present invention will be further described below through specific embodiments in conjunction with the accompanying drawings.

[0023] Embodiment 1:

[0024] like Figure 1-3As shown, a high-temperature dissolving device for producing fully water-soluble potassium sulfate comprises an upper reaction furnace 1 and a lower reaction furnace 2, wherein the upper reaction furnace 1 is installed above the lower reaction furnace 2 through a reinforcing rod, and impurity removal components 3 are arranged inside the upper reaction furnace 1 and the lower reaction furnace 2;

[0025] The impurity removal component 3 comprises a stirring motor 4 and a sealing rotating plate 8. The stirring motor 4 is installed at the top center position of the upper reaction furnace 1, and the driving shaft of the stirring motor 4 passes through the top of the upper reaction furnace 1 and is connected with a transmission rod 5. The sealing rotating plate 8 is installed between the upper and lower opposite surfaces of the upper reaction furnace 1 and the lower reaction furnace 2, and the sealing rotating plate 8 is rotatably connected to the upper reaction furnace 1 and the lower reaction furnace 2. A fixed filter screen 11 is installed at the upper position inside the lower reaction furnace 2, and a cleaning rotating plate 12 is movably installed at the top surface of the fixed filter screen 11 at both sides, and the opposite sides of the two cleaning rotating plates 12 are fixedly connected to the transmission rod 5. The outer ring of the transmission rod 5 is connected to the impurity removal frame 6 at the upper and front and rear ends through fixing bolts. An installation groove is provided at the front and rear ends of the impurity removal frame 6, and a movable filter screen 7 is arranged in the installation groove. The front and rear ends of the sealing rotating plate 8 are fixedly connected to the guide pipe 9 at the center position, and the lower part of the impurity removal frame 6 is inclined to match the guide pipe 9, and the end of the impurity removal frame 6 away from the transmission rod 5 is connected to the guide pipe 9.

[0026] In this embodiment, the end of the guide tube 9 away from the sealing rotating plate 8 is connected to the collecting tube 10, and the end of the collecting tube 10 away from the sealing rotating plate 8 is provided with a transparent observation window. During use, most impurities can be stored through the collecting tube 10, and the transparent observation window can be used to facilitate observation of the interior of the collecting tube 10.

[0027] In this embodiment, the collecting tube 10 does not contact the reinforcing rod, and a sealing cover is threadedly connected to the bottom end of the collecting tube 10. Since the collecting tube 10 does not contact the reinforcing rod, collision and damage are avoided, and impurities in the collecting tube 10 can be easily removed by unscrewing the sealing cover.

[0028] In this embodiment, the end of the transmission rod 15 passes through the upper and lower ends of the fixed filter screen 11 and is connected to the transmission rod 2 13. The outer ring of the transmission rod 2 13 is fixedly connected to a plurality of stirring rods 15 through a mounting frame at the lower position, and a spoiler block 14 is installed at the lower part of the transmission rod 2 13. An extension rod 16 is slidably installed on the side of the plurality of stirring rods 15 away from the transmission rod 2 13. A scraper 17 is installed on the end of the plurality of extension rods 16 away from the stirring rod 15 through a mounting seat 1 20. The stirring rod 15 is rotated inside the lower reaction furnace 2 to facilitate stirring of the liquid in the lower reaction furnace 2 and improve its mixing effect.

[0029] In this embodiment, a thrust spring is arranged around the outer ring of the extension rod 16, and the two ends of the thrust spring are respectively in contact with the stirring rod 15 and the mounting seat 20. The thrust spring is arranged to facilitate pushing the scraper 17 to fit the inner wall of the lower reactor 2, thereby preventing the scraper 17 from losing its scraping function due to slight wear.

[0030] In this embodiment, a fixed rod 18 is installed at the top of the two impurity removal frames 6 and at one end away from the transmission rod 15, a movable rod is slidably installed through the fixed rod 18 and at one end away from the transmission rod 5, and a scraper 2 19 is installed at one end of the movable rod away from the fixed rod 18 through a mounting seat 21. The scraper 2 19 is provided to clean the inner wall of the upper reaction furnace 1.

[0031] In this embodiment, a clamping spring is arranged around the outer ring of the movable rod, and the two ends of the clamping spring are respectively abutted against the fixed rod 18 and the mounting seat 21, the end of the scraper 17 away from the transmission rod 2 13 is in contact with the inner wall of the lower reaction furnace 2, and the end of the scraper 2 19 away from the transmission rod 1 5 is in contact with the inner wall of the upper reaction furnace 1. By arranging the scraper 2 19 and the scraper 1 17, it is convenient to clean the inner walls of the upper reaction furnace 1 and the lower reaction furnace 2, and to remove impurities or crystals that may adhere, thereby improving the use effect.

[0032] When the utility model is used, firstly, raw materials required for the production of potassium sulfate such as sulfuric acid and potassium chloride with a good ratio can be added into the upper reaction furnace 1 according to the prior art, and the upper reaction furnace 1 and the lower reaction furnace 2 are heated to heat the raw materials to make them react. During the reaction, a fixed filter screen 11 is provided at the connection between the upper reaction furnace 1 and the lower reaction furnace 2, and the fixed filter screen 11 is provided to filter the melted potassium chloride, so that the impurities inside the potassium chloride will not enter the lower reaction furnace 2, and the impurities will not affect the production quality of potassium sulfate.

[0033] At the same time, because two impurity removal frames 6 are installed inside the upper reaction furnace 1, and a movable filter screen 7 is installed on the impurity removal frame 6, and the impurity removal frame 6 is fixed on the transmission rod 1 5, during the reaction process, the stirring motor 4 can be started, and the transmission rod 1 5 is driven to rotate by the driving shaft of the stirring motor 4, so that the impurity removal frame 6 drives the movable filter screen 7 to rotate in the upper reaction furnace 1. Through the provided movable filter screen 7, it is convenient to filter the impurities contained in the liquid in the upper reaction furnace 1. At the same time, the movable filter screen 7 continues to rotate, which is convenient for stirring the liquid. At the same time, the efficiency of the liquid passing through the movable filter screen 7 can be accelerated, thereby improving the filtering efficiency;

[0034] The lower part of the impurity removal frame 6 is arranged to be inclined to match the guide pipe 9, so that most of the impurities falling on the impurity removal frame 6 can be guided into the collection pipe 10, thereby reducing the probability of impurities clogging the fixed filter screen 11 and the movable filter screen 7;

[0035] It is convenient to extend the working time of the movable filter 7 and the fixed filter 11. That is, during the filtering process, the fixed filter 11 and the movable filter 7 may be blocked due to various reasons, but the impurity removal frame 6 and the guide pipe 9 play a role in cleaning the impurities, which can extend the time required for the blockage, thereby reducing the frequency of shutdown maintenance and facilitating the improvement of processing efficiency;

[0036] A transmission rod 13 is provided inside the lower reaction furnace 2, and the transmission rod 13 is connected to the bottom end of the transmission rod 15, so that when the transmission rod 15 rotates, the transmission rod 13 can be driven to rotate, so that the stirring rod 15, the scraper 17 and other components on the transmission rod 13 rotate, and the stirring rod 15 rotates inside the lower reaction furnace 2, so that the liquid in the lower reaction furnace 2 is stirred and its mixing effect is improved;

[0037] At the same time, because the scraper 17 is in contact with the inner wall of the lower reaction furnace 2, the scraper 17 can scrape and clean the inner wall of the lower reaction furnace 2 when it rotates, so as to scrape off the possible residual crystals and reduce the probability of adhesion. After that, the reacted liquid is discharged from the discharge port of the lower reaction furnace 2 for subsequent processing.

Claims

1. A high-temperature dissolution device for producing fully water-soluble potassium sulfate, comprising an upper reaction furnace (1) and a lower reaction furnace (2), wherein the upper reaction furnace (1) is installed above the lower reaction furnace (2), characterized in that: Impurity removal components (3) are provided inside the upper reaction furnace (1) and the lower reaction furnace (2); The impurity removal component (3) comprises a stirring motor (4) and a sealing rotating plate (8), wherein the stirring motor (4) is installed at a central position at the top end of the upper reaction furnace (1), and a driving shaft of the stirring motor (4) passes through the top end of the upper reaction furnace (1) and is connected to a transmission rod (5), the sealing rotating plate (8) is installed between upper and lower opposite surfaces of the upper reaction furnace (1) and the lower reaction furnace (2), and the sealing rotating plate (8) is rotatably connected to the upper reaction furnace (1) and the lower reaction furnace (2); a fixed filter screen (11) is installed at an upper position inside the lower reaction furnace (2), and the top surface of the fixed filter screen (11) is movable at two sides thereof. A cleaning rotating plate (12) is movably installed, and the opposite sides of the two cleaning rotating plates (12) are fixedly connected to the transmission rod (5); the outer ring of the transmission rod (5) is connected to a debris removal frame (6) at the upper and front and rear ends through fixing bolts; a mounting groove is provided through the front and rear ends of the debris removal frame (6), and a movable filter screen (7) is arranged in the mounting groove; the front and rear ends of the sealing rotating plate (8) are both fixedly connected to a guide pipe (9) at the center; the lower part of the debris removal frame (6) is inclined to match the guide pipe (9), and the end of the debris removal frame (6) away from the transmission rod (5) is connected to the guide pipe (9).

2. The high-temperature dissolving device for producing fully water-soluble potassium sulfate according to claim 1, characterized in that: One end of the guide tube (9) away from the sealing rotating plate (8) is connected to a collecting tube (10), and one end of the collecting tube (10) away from the sealing rotating plate (8) is provided with a transparent observation window.

3. The high-temperature dissolving device for producing fully water-soluble potassium sulfate according to claim 2, characterized in that: The bottom end of the collecting pipe (10) is threadedly connected with a sealing cover.

4. The high-temperature dissolving device for producing fully water-soluble potassium sulfate according to any one of claims 1 to 3, characterized in that: The end of the transmission rod 1 (5) passes through the upper and lower ends of the fixed filter screen (11) and is connected to the transmission rod 2 (13); the outer ring of the transmission rod 2 (13) is fixedly connected to the stirring rod (15) through a mounting frame at the lower position, and a spoiler block (14) is installed at the lower part of the transmission rod 2 (13); an extension rod (16) is slidably installed on the side of the stirring rod (15) away from the transmission rod 2 (13); and a scraper plate 1 (17) is installed on the end of the extension rod (16) away from the stirring rod (15) through a mounting seat 1 (20).

5. The high-temperature dissolving device for producing fully water-soluble potassium sulfate according to claim 4, characterized in that: A thrust spring is arranged around the outer ring of the extension rod (16), and two ends of the thrust spring are respectively in contact with the stirring rod (15) and the mounting seat 1 (20).

6. The high-temperature dissolving device for producing fully water-soluble potassium sulfate according to claim 5, characterized in that: A fixed rod (18) is installed at the top end of the two impurity removal frames (6) and at one end away from the transmission rod (5), a movable rod is slidably installed through the fixed rod (18) and at one end away from the transmission rod (5), and a scraper plate (19) is installed at one end of the movable rod away from the fixed rod (18) through a mounting seat (21).

7. The high-temperature dissolving device for producing fully water-soluble potassium sulfate according to claim 6, characterized in that: A clamping spring is arranged around the outer ring of the movable rod, and the two ends of the clamping spring are respectively in contact with the fixed rod (18) and the second mounting seat (21); the end of the scraper plate (17) away from the transmission rod (13) is in contact with the inner wall of the lower reaction furnace (2); and the end of the scraper plate (19) away from the transmission rod (5) is in contact with the inner wall of the upper reaction furnace (1).

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