Integrated potassium sulfate reaction furnace with anti-caking function

Abstract

The utility model belongs to the technical field of chemical production equipment, and discloses an integrated potassium sulfate reaction furnace with an anti-caking function, the integrated potassium sulfate reaction furnace comprises a furnace body and a furnace cover, the furnace cover is mounted at an opening of the top surface of the furnace body in a covering manner, and a gear motor is fixedly mounted on the top surface of the furnace cover. According to the furnace, the air inlet pipe is installed at the top of the furnace cover, one end of the air inlet pipe communicates with the comb tooth pipe composed of the multiple air guide pipes, and external air is guided into the air inlet pipe, so that the external air is firstly heated and dried through the air heater on the surface of the air inlet pipe and then is divided through the multiple air guide pipes of the comb tooth pipe; dry hot air is blown out from a port in the tail of the air guide pipe and a plurality of air holes in the bottom face of the air guide pipe, the obliquely-installed comb tooth pipe and the exhaust pipe provided with the negative pressure draught fan on the furnace cover are combined, the dry hot air can blow the surfaces of materials, the humidity is reduced, volatile by-products are taken away, then gas in the furnace cavity is sucked through the exhaust pipe, and the humidity is further reduced.

Description

Technical Field

[0001] This utility model relates to the field of chemical production equipment technology, and in particular to an integrated potassium sulfate reactor with anti-caking function. Background Technology

[0002] Potassium sulfate is an important fertilizer. The main method for producing potassium sulfate is to use concentrated sulfuric acid and potassium chloride as raw materials, reacting them at high temperatures to produce potassium sulfate and gaseous hydrogen chloride. Currently, the most commonly used reactor for producing potassium sulfate is the Mannheim furnace. The raw materials (KCl and concentrated H2SO4) enter the furnace through the feed inlet and react rapidly under the heat provided by the heating duct, producing K2SO4 and HCl gas. Under the stirring of the stirrer, the raw materials are mixed and react. The generated K2SO4 is discharged from the product outlet at the bottom of the furnace, and the HCl gas enters the washing and absorption device from the by-product gas outlet at the top of the furnace to form liquid hydrochloric acid.

[0003] In the existing technology, during the reaction process of potassium sulfate preparation, the material may clump in the furnace due to humidity or particle size, which affects production efficiency and equipment operation. Utility Model Content

[0004] To solve the above problems, this utility model provides an integrated potassium sulfate reaction furnace with anti-caking function.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: an integrated potassium sulfate reactor with anti-caking function, comprising a furnace body and a furnace cover. The furnace cover is installed over the open top surface of the furnace body, and a geared motor is fixedly installed on the top surface of the furnace cover. A furnace cavity is provided inside the furnace body, and a discharge nozzle is provided at the bottom of the furnace body corresponding to the furnace cavity. A rotary valve is installed on the discharge nozzle at the bottom of the furnace body. A drive shaft is fixed to the output end of the geared motor through a coupling, and a stirring rod is fixed to the bottom of the drive shaft. Several stirring columns are equidistantly installed on the surface of the stirring rod. A feed pipe is provided on the left side of the top surface of the furnace cover, and an exhaust pipe is provided on the right side of the top surface of the furnace cover. An air inlet pipe is inserted through the surface of the furnace cover. An air heater is installed on the surface of the air inlet pipe, and a comb-tooth pipe is installed at an angle at one end of the air inlet pipe. The comb-tooth pipe is formed by several interconnected air guide pipes, and several air holes are opened on the bottom surface of each air guide pipe. Several ceramic heating tubes are installed around the inner wall of the furnace cavity.

[0006] Furthermore, the top of the feed pipe is connected to a conveying cylinder, and a drive motor is fixedly installed at one end of the conveying cylinder. The output end of the drive motor is fixed to an auger through a coupling, and the spiral blades of the auger are in contact with the inner wall of the conveying cylinder. The top of the conveying cylinder is connected to a feed nozzle, and a cylindrical filter cover is movably installed at the opening of the feed nozzle. A support is welded to the bottom of the conveying cylinder, and the support is fixedly connected to the furnace cover.

[0007] Furthermore, a conical section is provided on the lower inner side of the furnace cavity, and the stirring rod on the drive shaft is arranged parallel to the conical section of the furnace cavity.

[0008] Furthermore, valves are installed on the surfaces of both the exhaust pipe and the feed pipe, and the exhaust pipe is connected to an external condenser via a corrosion-resistant negative pressure fan.

[0009] Furthermore, an annular frame is provided at the top port of the filter cover, and a filter screen is provided at the bottom of the filter cover.

[0010] Furthermore, each air duct end of the comb tube has an open structure.

[0011] Furthermore, a through-hole is provided at the bottom of the furnace body, and the discharge nozzle is located inside the through-hole of the furnace body.

[0012] In summary, this utility model has the following beneficial effects:

[0013] 1. In this application, an air inlet pipe is installed on the top of the furnace cover, and one end of the air inlet pipe is connected to a comb-shaped pipe composed of several air guide pipes. By introducing outside air into the air inlet pipe, the outside air is first heated and dried by the air heater on the surface of the air inlet pipe, and then diverted through several air guide pipes of the comb-shaped pipe, so that the dry hot air is blown out from the port at the tail end of the air guide pipe and several air holes on its bottom surface. Combined with the inclined comb-shaped pipe and the exhaust pipe of the negative pressure fan on the furnace cover, the dry hot air can "blow" the surface of the material, reduce the humidity and carry away volatile by-products. Then, the exhaust pipe draws the gas in the furnace cavity to further reduce the humidity, which is beneficial to reduce the agglomeration phenomenon caused by liquid phase bridging.

[0014] 2. In this application, by integrating the materials required for the potassium sulfate reaction into the conveying cylinder, the auger is driven by the drive motor to rotate, which causes the spiral blades of the auger to premix the materials during the pushing process, which helps to ensure the reaction effect and fullness. On this basis, by setting a filter cylinder in the feed nozzle of the conveying cylinder, the materials required for the potassium sulfate reaction can be screened during the feeding stage, avoiding the agglomeration phenomenon caused by large pieces of material entering the furnace cavity. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0016] Figure 2 This is a top view of the furnace body;

[0017] Figure 3 This is a schematic diagram of the conveyor cylinder;

[0018] Figure 4This is a schematic diagram of the comb tube structure.

[0019] In the diagram: 1. Furnace body; 2. Furnace cover; 3. Gear motor; 4. Drive shaft; 5. Stirring rod; 6. Stirring column; 7. Furnace cavity; 8. Discharge nozzle; 9. Rotary valve; 10. Ceramic heating tube; 11. Exhaust pipe; 12. Conveying cylinder; 13. Feed pipe; 14. Air inlet pipe; 15. Air heater; 16. Comb tube; 17. Drive motor; 18. Screwdriver; 19. Feed nozzle; 20. Filter cover; 21. Support; 22. Air guide pipe. Detailed Implementation

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

[0021] like Figure 1-4 As shown in the embodiment of this application, a potassium sulfate reactor with an integrated anti-caking function is disclosed, including a furnace body 1 and a furnace cover 2. The furnace cover 2 is installed over the open top surface of the furnace body 1, and a geared motor 3 is fixedly installed on the top surface of the furnace cover 2. A furnace cavity 7 is provided inside the furnace body 1, and a discharge nozzle 8 is provided at the bottom of the furnace body 1 corresponding to the furnace cavity 7. A rotary valve 9 is installed on the discharge nozzle 8 at the bottom of the furnace body 1. A drive shaft 4 is fixed to the output end of the geared motor 3 through a coupling, and a stirring rod 5 is fixed to the bottom of the drive shaft 4. A plurality of stirring columns 6 are equidistantly installed on the surface of the stirring rod 5. A feed pipe 13 is provided on the left side of the top surface of the furnace cover 2, and an exhaust pipe 11 is provided on the right side of the top surface of the furnace cover 2. A feed pipe 13 is inserted through the surface of the furnace cover 2. The device includes an air inlet duct 14, an air heater 15 mounted on its surface, and a comb-tooth pipe 16 mounted at one end of the air inlet duct 14 at an angle. The comb-tooth pipe 16 is composed of several interconnected air guide pipes 22, and each air guide pipe 22 has several air holes on its bottom surface. Several ceramic heating tubes 10 are installed around the inner wall of the furnace cavity 7. The device includes a geared motor 3, ceramic heating tubes 10, air heater 15, and drive motor 17. The control method of this utility model is controlled by manually starting and stopping the switch. The wiring diagram of the power components and the power supply are common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and wiring arrangement will not be explained in detail.

[0022] The top of the feed pipe 13 is connected to the conveying cylinder 12, and a drive motor 17 is fixedly installed at one end of the conveying cylinder 12. The output end of the drive motor 17 is fixed to the auger 18 through a coupling, and the spiral blades of the auger 18 are in contact with the inner wall of the conveying cylinder 12. The top of the conveying cylinder 12 is connected to the feed nozzle 19, and a cylindrical filter cover 20 is movably installed at the opening of the feed nozzle 19. A support 21 is welded to the bottom of the conveying cylinder 12, and the support 21 is fixedly connected to the furnace cover 2. With the above structure, the premixing between materials is realized, which is beneficial to ensure the reaction effect and fullness. The filter cover 20 is used to filter agglomerated or large particles of materials and reduce the probability of agglomeration.

[0023] A conical section is provided on the lower inner side of the furnace cavity 7. The stirring rod 5 on the drive shaft 4 is arranged parallel to the conical section of the furnace cavity 7. This structure uses gravity to promote uniform material flow and avoid accumulation. The inner wall surface of the furnace cavity 7 is sprayed with polytetrafluoroethylene (PTFE) or ceramic-based anti-stick coating to reduce the probability of material adhesion.

[0024] Valves are installed on the surfaces of both the exhaust pipe 11 and the feed pipe 13. The exhaust pipe 11 is connected to an external condenser via a corrosion-resistant negative pressure fan. This structure is used to control the feed rate and exhaust rate. The external condenser can condense water vapor in the extracted gas, which helps to reduce humidity.

[0025] The filter cover 20 has an annular frame at the top port and a filter screen at the bottom. This structure makes it easy to install the filter cover 20 and easy to screen agglomerated or large particles. The pore size of the filter screen can be 4.75mm-2.36mm.

[0026] Each air guide 22 of the comb tube 16 has an open end. This structure allows each air guide 22 to form an air outlet, which makes it easier to reduce the surface humidity of the material and prevent clumping.

[0027] A through-hole is provided at the bottom of the furnace body 1, and the discharge nozzle 8 is set inside the through-hole of the furnace body 1. This structure makes it easy to discharge the reaction products.

[0028] The working principle of the potassium sulfate reactor with integrated anti-caking function in this embodiment is as follows: The materials required for the potassium sulfate reaction are uniformly introduced into the conveying cylinder 12. As the drive motor 17 drives the auger 18 to rotate, the spiral blades of the auger 18 premix the materials during the pushing process, which helps ensure the reaction effect and completeness. Furthermore, a filter cylinder is installed inside the feed nozzle 19 of the conveying cylinder 12, allowing the materials required for the potassium sulfate reaction to be screened during the feeding stage, preventing large pieces of material from entering the furnace cavity 7 and causing agglomeration. By starting the reduction motor 3 on the furnace cover 2, the reduction motor 3 drives the transmission shaft 4 fixed at its output end to rotate, causing the transmission shaft 4 to drive the stirring rod 5 and several stirring columns 6 on its surface to rotate. The reaction material inside the furnace cavity 7 is stirred, and the ceramic heating tube 10 is activated to heat the material until the material reacts. At the same time, by introducing outside air into the air inlet pipe 14, the outside air is first heated and dried by the air heater 15 on the surface of the air inlet pipe 14, and then diverted through several air guide pipes 22 of the comb pipe 16, so that the dry hot air is blown out from the port at the tail of the air guide pipe 22 and several air holes on its bottom surface. Combined with the inclined comb pipe 16 and the exhaust pipe 11 equipped with a negative pressure fan on the furnace cover 2, the dry hot air can "blow" the surface of the material, reduce the humidity and carry away volatile by-products. Then, the exhaust pipe 11 draws in the gas inside the furnace cavity 7 to further reduce the humidity, which helps to reduce the agglomeration phenomenon caused by liquid phase bridging.

[0029] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A potassium sulfate reaction furnace with anti-caking function, comprising a furnace body (1) and a furnace cover (2), characterized in that: A furnace cover (2) is installed over the opening on the top surface of the furnace body (1), and a geared motor (3) is fixedly installed on the top surface of the furnace cover (2). A furnace cavity (7) is provided inside the furnace body (1), and a discharge nozzle (8) is provided at the bottom of the furnace body (1) corresponding to the furnace cavity (7). A rotary valve (9) is installed on the discharge nozzle (8) at the bottom of the furnace body (1). A drive shaft (4) is fixed to the output end of the geared motor (3) through a coupling, and a stirring rod (5) is fixed to the bottom of the drive shaft (4). Several stirring columns (6) are equidistantly installed on the surface of the stirring rod (5). A feed pipe (13) is provided on the left side of the top surface of the furnace cover (2), and an exhaust pipe (11) is provided on the right side of the top surface of the furnace cover (2). An air inlet pipe (14) is installed through the surface of the furnace cover (2). An air heater (15) is installed on the surface of the air inlet pipe (14). A comb pipe (16) is installed at one end of the air inlet pipe (14). The comb pipe (16) is formed by several air guide pipes (22) connected to each other. Several air holes are opened on the bottom surface of each air guide pipe (22). Several ceramic heating tubes (10) are installed around the inner wall of the furnace cavity (7).

2. The potassium sulfate reaction furnace with anti-caking function according to claim 1, characterized in that: The top of the feed pipe (13) is connected to the conveying cylinder (12), and a drive motor (17) is fixedly installed at one end of the conveying cylinder (12). The output end of the drive motor (17) is fixed to the auger (18) through a coupling, and the spiral blades of the auger (18) are in contact with the inner wall of the conveying cylinder (12). The top of the conveying cylinder (12) is connected to the feed nozzle (19), and a cylindrical filter cover (20) is movably installed at the opening of the feed nozzle (19). A support (21) is welded to the bottom of the conveying cylinder (12), and the support (21) is fixedly connected to the furnace cover (2).

3. The potassium sulfate reaction furnace with anti-caking function according to claim 1, characterized in that: The lower inner side of the furnace cavity (7) is provided with a conical part, and the stirring rod (5) on the drive shaft (4) is arranged parallel to the conical part of the furnace cavity (7).

4. The potassium sulfate reaction furnace with anti-caking function according to claim 1, characterized in that: Valves are installed on the surface of the exhaust pipe (11) and the feed pipe (13). The exhaust pipe (11) is connected to an external condenser through a corrosion-resistant negative pressure fan.

5. The potassium sulfate reaction furnace with anti-caking function according to claim 2, characterized in that: The filter cover (20) has an annular frame at the top port and a filter screen at the bottom.

6. The potassium sulfate reaction furnace with anti-caking function according to claim 1, characterized in that: Each air duct (22) of the comb tube (16) has an open end structure.

7. The potassium sulfate reaction furnace with anti-caking function according to claim 1, characterized in that: The bottom of the furnace body (1) is provided with a through opening, and the discharge nozzle (8) is located inside the through opening of the furnace body (1).

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