Device for producing industrial ammonium nitrate and porous ammonium nitrate

Abstract

The utility model discloses a device for producing industrial ammonium nitrate and porous ammonium nitrate, belongs to the field of chemical treatment, solves the problem that an existing chemical production device cannot process different materials, and comprises a pretreatment assembly, a granulation part, a screening mechanism and an evaporation assembly, the pretreatment assembly is used for collecting and conveying an industrial ammonium nitrate solution and a porous ammonium nitrate solution, the industrial ammonium nitrate and the porous sodium nitrate can be efficiently and stably processed by arranging the pretreatment assembly, the granulation piece, the screening mechanism and the evaporation assembly, processing of the two solutions can be stably switched and changed, and the processing efficiency is improved. When two solutions are processed, all parts in the device need to be cleaned in advance, the situation that the two solutions pollute each other during processing is prevented, and therefore the stability of the whole device during operation is guaranteed, the processing cost during processing of the two solutions is reduced, and the working quality of the device is improved.

Description

Technical Field

[0001] This utility model belongs to the field of chemical processing, specifically relating to an apparatus for producing industrial ammonium nitrate and porous ammonium nitrate. Background Technology

[0002] Chemical production refers to a general term for various equipment used to process and treat various chemical materials. With the continuous development of technology, existing production equipment can now process various chemical materials, including industrial ammonium nitrate and porous ammonium nitrate, which are common chemical materials in the chemical industry.

[0003] In existing chemical production facilities, the existing porous ammonium nitrate units can only operate independently. If a company wants to produce industrial ammonium nitrate, it needs to build an industrial ammonium nitrate unit in another area. The construction cost of the entire unit is high, with an investment of hundreds of millions of yuan, which places a heavy burden on the company's investment. If the existing porous ammonium nitrate unit can be technically upgraded to achieve the production of industrial ammonium nitrate, the repeated investment in equipment can be avoided, and the site and most of the important equipment can be shared, reducing the burden on the company. Utility Model Content

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0005] To address the problems mentioned in the background section, the present invention adopts the following technical solution.

[0006] An apparatus for producing industrial ammonium nitrate and porous ammonium nitrate includes a pretreatment component, a granulation component, a sieving mechanism, and an evaporation component. The pretreatment component collects and transports industrial ammonium nitrate solution and porous ammonium nitrate solution. The granulation component receives the solution transported by the pretreatment component and processes it into fixed granules. The granulation component has a sieving mechanism on its side for sieving and coating solid particles. The pretreatment component is connected to an evaporation component for heat exchange during the processing of industrial ammonium nitrate via pipelines.

[0007] As a preferred technical solution of this utility model, the pretreatment component includes a first processing chamber, an additive storage chamber, a conveying pump body, and a second processing chamber. The bottom outlet of the first processing chamber is connected to the conveying pump body through a pipe, and the output end of the conveying pump body is connected to the second processing chamber through a pipe. An additive storage chamber for replenishing the additive solution inside the second processing chamber is provided on the side of the second processing chamber.

[0008] As a preferred embodiment of the present invention, the pretreatment component further includes a solution input pipe and a stirrer. The solution input pipe is connected to one side of the surface of the first processing chamber, and a stirrer for stirring the internal solution is installed in both the first and second processing chambers.

[0009] As a preferred embodiment of this utility model, the granulation component includes a granulation unit, a first conveyor belt, a second conveyor belt, a drying drum, a third conveyor belt, and a bucket elevator. The granulation unit processes the solution mixed inside the pretreatment component. A dedicated granulation nozzle is installed inside the granulation unit. A first conveyor belt is provided at the bottom outlet of the granulation unit. A second conveyor belt is provided on the side of the first conveyor belt. A drying drum for drying the material is provided on the side of the second conveyor belt. A third conveyor belt for conveying the material is provided on the side of the drying drum. A bucket elevator for stably conveying the material is provided on the side of the third conveyor belt.

[0010] As a preferred embodiment of this invention, the granulation component further includes a fourth conveyor belt, which is disposed below the drying drum. When the granulation component processes industrial ammonium nitrate, the material is stably conveyed by the fourth conveyor belt.

[0011] As a preferred technical solution of this utility model, the screening mechanism includes a screener, a plate cooler, a fifth conveyor belt, a wrapping roller, a sixth conveyor belt, and a finished product silo. The screener is installed on the side of the granulation component to screen the material conveyed by the granulation component. The plate cooler is located at the discharge end of the screener. The fifth conveyor belt is located at the bottom end of the plate cooler. The wrapping roller is located on the side of the fifth conveyor belt and sprays wrapping oil onto the material to wrap it. A finished product silo for storing the processed material is provided on the side of the sixth conveyor belt.

[0012] As a preferred embodiment of this utility model, the screening mechanism further includes a conveying pipe for unqualified materials after screening, and the conveying pipe is connected to the pretreatment component.

[0013] As a preferred technical solution of this utility model, the evaporation assembly includes a two-stage evaporator and a steam condensate tank. The top of the pretreatment assembly is provided with a two-stage evaporator for increasing the concentration of the ammonium nitrate solution, and the side of the two-stage evaporator is provided with a steam condensate tank for collecting the steam condensate.

[0014] As a preferred technical solution of this utility model, the evaporation assembly further includes an air heater, a pressurizing fan, and an air filter. The air filter is installed on the side of the second-stage evaporator and filters the outside air. The pressurizing fan is installed on the side of the air filter and pressurizes the air filtered inside the air filter. The air heater is connected to the side of the pressurizing fan through a pipeline and heats the pressurized gas before it is fed into the second-stage evaporator.

[0015] A method for producing industrial ammonium nitrate and porous ammonium nitrate includes the following steps:

[0016] Processing of porous ammonium nitrate

[0017] S1. Material pretreatment: 96-98% ammonium nitrate solution from the outside is sent to the first processing chamber from outside the boundary. Then, the solution is transported to the second processing chamber by the use of the conveying pump. After being mixed with the additive solution from the additive storage chamber, it is stirred evenly by the agitator in the conveying pump and then transported to the granulation part.

[0018] S2. Granulation Processing: The solution input in the above steps enters the granulation unit and is sprayed out through the granulation nozzle inside the granulation unit. After heat and mass transfer with the counter-current rising air, the temperature is reduced to 50~60°C, and the molten liquid gradually forms solid ammonium nitrate, which falls into the first conveyor belt and is then transported to the second conveyor belt. The second conveyor belt then transports it to the drying drum, where the solid ammonium nitrate is dried by blowing hot air through the drying drum. After drying, it exits the drying drum and is first sent to the third conveyor belt, and then to the bucket elevator. After being lifted by the bucket elevator, it is input into the screening mechanism.

[0019] S3. Screening process: First, the finished product with standard particle size is screened out by a screener. The qualified particles fall into the plate cooler for cooling and cooling. The unqualified particles return to the first processing chamber through the conveyor pipe. After being stirred and dissolved by the agitator, this solution is sent to the granulation with ammonium nitrate solution. The temperature of the finished ammonium nitrate is reduced to below 31°C by the plate cooler. Then it falls into the fifth conveyor belt and is conveyed to the coating roller. After being coated with sprayed coating oil in the coating roller, it is conveyed to the sixth conveyor belt and finally falls into the finished product silo to enter the packaging process, completing the processing of porous ammonium nitrate.

[0020] For industrial ammonium nitrate processing

[0021] S4. Cleaning: First, clean the original processing chambers of porous ammonium nitrate, the first and second processing chambers, the wrapping rollers, the first conveyor belt, the second conveyor belt, and other conveyor belts and various equipment to remove any residual ammonium nitrate.

[0022] S5. Pretreatment: The 96-98% ammonium nitrate solution sent from the outside is input into the first processing chamber, and then transported to the second-stage evaporator through the transfer pump. The original solution is processed by the operation of the second-stage evaporator, and the concentration is evaporated to about 99.5%. The solution is then input into the second processing chamber.

[0023] S6. After processing, the material is fed into the granulation unit and granulated. After granulation, it is conveyed by the first and second conveyor belts, then transferred to the fourth conveyor belt and sent to the bucket elevator. The material is then processed according to the screening process proposed in S3 to complete the processing of industrial ammonium nitrate.

[0024] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0025] In this invention, by setting up a pretreatment component, a granulation component, a screening mechanism, and an evaporation component, industrial ammonium nitrate and porous sodium nitrate can be processed efficiently and stably. The processing of the two solutions can be switched and changed stably. Only the components inside the device need to be cleaned in advance to prevent cross-contamination between the two solutions during processing. This ensures the overall stability of the equipment during operation, reduces the processing cost of the two solutions, and improves the working quality of the equipment itself. Attached Figure Description

[0026] Figure 1 This is a plan view of the overall structure of this utility model.

[0027] Figure 2 This is a schematic diagram of the pretreatment component structure of this utility model.

[0028] Figure 3 This is a schematic diagram of the granulation component of this utility model.

[0029] Figure 4 This is a schematic diagram of the screening mechanism in this utility model.

[0030] Figure 5 This is a schematic diagram of the evaporation component in this utility model.

[0031] The correspondence between the labels and component names in the attached figures is as follows:

[0032] 1. Pretreatment assembly; 11. First processing chamber; 12. Additive storage chamber; 13. Conveying pump body; 14. Second processing chamber; 15. Solution input pipe; 16. Stirrer; 2. Granulation component; 21. Granulation part; 22. First conveyor belt; 23. Second conveyor belt; 24. Drying drum; 25. Third conveyor belt; 26. Bucket elevator; 27. Fourth conveyor belt; 3. Screening mechanism; 31. Screener; 32. Conveying pipeline; 33. Plate cooler; 34. Fifth conveyor belt; 35. Wrapping drum; 36. Sixth conveyor belt; 37. Finished product silo; 4. Evaporation assembly; 41. Two-stage evaporator; 42. Steam condensate tank; 43. Air heater; 44. Pressurized blower; 45. Air filter. Detailed Implementation

[0033] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0034] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0035] Depend on Figure 1 The diagram shows a schematic of the production apparatus for industrial ammonium nitrate and porous ammonium nitrate in this embodiment. It includes a pretreatment component 1, a granulation component 2, a screening mechanism 3, and an evaporation component 4. The pretreatment component 1 collects and transports industrial ammonium nitrate solution and porous ammonium nitrate solution. The granulation component 2 receives the solution transported by the pretreatment component 1 and processes it into fixed granules. The granulation component 2 has a screening mechanism 3 on its side for screening and coating solid particles. The pretreatment component 1 is connected to the evaporation component 4, which is used for heat exchange during the processing of industrial ammonium nitrate, through a pipeline.

[0036] Depending on the material being processed, the appropriate processing flow is selected. The pretreatment component 1 collects and mixes the material to be processed, and then feeds it into the granulator 2. The granulator 2 uses its own components to granulate and dry the material. Afterward, the screening mechanism 3 screens the granular material. Material that does not meet the specifications is fed back into the pretreatment component 1 for processing, while material that meets the specifications is processed through the operation of multiple sets of components. This complete material processing ensures the working quality of the equipment during operation.

[0037] From the appendix Figure 2As shown, it is a structural schematic diagram of the pretreatment component 1 in this embodiment. The pretreatment component 1 includes a first processing chamber 11, an additive storage chamber 12, a conveying pump body 13, and a second processing chamber 14. The bottom outlet of the first processing chamber 11 is connected to the conveying pump body 13 through a pipe. The output end of the conveying pump body 13 is connected to the second processing chamber 14 through a pipe. An additive storage chamber 12 for replenishing the additive solution inside the second processing chamber 14 is provided on the side of the second processing chamber 14.

[0038] During use, the first processing chamber 11 collects and stores the externally input industrial ammonium nitrate solution and porous ammonium nitrate solution. Then, with the cooperation of the conveying pump 13, the solution is input into the second processing chamber 14 and fully mixed with the additive solution stored in the additive storage chamber 12 to complete the pretreatment of the material.

[0039] From the appendix Figure 2 As shown, it is a structural schematic diagram of the pretreatment component 1 in this embodiment. The pretreatment component 1 also includes a solution input pipe 15 and a stirrer 16. The solution input pipe 15 is connected to one side of the surface of the first processing chamber 11. Stirrers 16 for stirring the internal solution are installed in both the first processing chamber 11 and the second processing chamber 14.

[0040] During use, the external solution is input into the first processing chamber 11 through the solution input pipe 15, while the operation of the stirrer 16 ensures that the solution and additive solution inside the second processing chamber 14 are fully mixed. The surface of the first processing chamber 11 is also equipped with a stirrer 16, which can re-mix and process the unqualified materials after screening in the screening mechanism 3, ensuring the stability of the equipment operation.

[0041] From the appendix Figure 3 As shown, this is a schematic diagram of the granulation component 2 in this embodiment. The granulation component 2 includes a granulation part 21, a first conveyor belt 22, a second conveyor belt 23, a drying drum 24, a third conveyor belt 25, and a bucket elevator 26. The granulation part 21 processes the solution mixed inside the pretreatment component 1. A dedicated granulation nozzle is installed inside the granulation part 21. The first conveyor belt 22 is provided at the bottom outlet of the granulation part 21. The second conveyor belt 23 is provided on the side of the first conveyor belt 22. The drying drum 24 for drying the material is provided on the side of the second conveyor belt 23. The third conveyor belt 25 for conveying the material is provided on the side of the drying drum 24. The bucket elevator 26 for stably conveying the material is provided on the side of the third conveyor belt 25.

[0042] In use, the solution output from the pretreatment component 1 is granulated by the granulation component 21 and the granulation nozzle installed inside the granulation component 21. Then, the granulated material is transported by the first conveyor belt 22 and the second conveyor belt 23. At this time, the subsequent path is different depending on the initial solution. When the solution is porous ammonium nitrate, the material enters the drying drum 24 for drying. Then, the material is transported into the screening mechanism 3 by the cooperation of the third conveyor belt 25 and the bucket elevator 26.

[0043] From the appendix Figure 3 As shown, this is a structural schematic diagram of the granulation component 2 in this embodiment. The granulation component 2 also includes a fourth conveyor belt 27, which is disposed below the drying drum 24. When the granulation component 21 processes industrial ammonium nitrate, the material is stably conveyed by the fourth conveyor belt 27. When the initial solution is an industrial ammonium nitrate solution, the material is directly fed into the fourth conveyor belt 27 after passing through the second conveyor belt 23. Then, through the cooperation of the fourth conveyor belt 27 and the bucket elevator 26, it is directly fed into the screening mechanism 3.

[0044] From the appendix Figure 4 As shown, this is a schematic diagram of the screening mechanism 3 in this embodiment. The screening mechanism 3 includes a screener 31, a plate cooler 33, a fifth conveyor belt 34, a wrapping roller 35, a sixth conveyor belt 36, and a finished product silo 37. The screener 31 is installed on the side of the granulator 2 to screen the material conveyed by the granulator 2. The plate cooler 33 is located at the discharge end of the screener 31. The fifth conveyor belt 34 is located at the bottom end of the plate cooler 33. The wrapping roller 35 is located on the side of the fifth conveyor belt 34 and sprays wrapping oil onto the material to wrap it. The finished product silo 37 for storing the processed material is located on the side of the sixth conveyor belt 36.

[0045] The finished product with standard particle size is screened by the screener 31. The qualified particles fall into the plate cooler 33 for cooling and temperature reduction. After passing through the plate cooler 33, the temperature of the finished ammonium nitrate is reduced to below 31°C. Then it falls into the fifth conveyor belt 34 and is conveyed to the coating roller 35. After being coated with sprayed coating oil in the coating roller 35, it is conveyed to the sixth conveyor belt 36 and finally falls into the finished product silo 37 to enter the packaging process, completing the processing of porous ammonium nitrate.

[0046] From the appendix Figure 4 As shown, it is a structural schematic diagram of the screening mechanism 3 in this embodiment. The screening mechanism 3 also includes a conveying pipe 32 for unqualified materials after screening. The conveying pipe 32 is connected to the pretreatment component 1. Unqualified particles return to the first processing chamber 11 through the conveying pipe 32. After being stirred and dissolved by the stirrer 16, this solution is then sent to granulation with ammonium nitrate solution.

[0047] From the appendix Figure 5 As shown, it is a schematic diagram of the structure of the evaporation component 4 in this embodiment. The evaporation component 4 includes a two-stage evaporator 41 and a steam condensate tank 42. The top of the pretreatment component 1 is provided with a two-stage evaporator 41 for increasing the concentration of the ammonium nitrate solution. The side of the two-stage evaporator 41 is provided with a steam condensate tank 42 for collecting steam condensate. Through the operation of the two-stage evaporator 41, the solution input into the two-stage evaporator 41 is processed to increase the concentration of the solution itself.

[0048] From the appendix Figure 5 The diagram shows the structure of the evaporation assembly 4 in this embodiment. The evaporation assembly 4 also includes an air heater 43, a pressurizing fan 44, and an air filter 45. The air filter 45 is located on the side of the second-stage evaporator 41 and filters the outside air. The pressurizing fan 44 is installed on the side of the air filter 45 and pressurizes the air filtered inside the air filter 45. The air heater 43 is connected to the side of the pressurizing fan 44 through a pipeline and heats the pressurized gas before it is input into the second-stage evaporator 41. In use, the air filter 45 filters the outside air, and then the pressurizing fan 44 pressurizes the air before it is input into the air heater 43. The air heater 43 then heats the internal air before the heated gas is input into the second-stage evaporator 41, facilitating the operation of the second-stage evaporator 41.

[0049] From the appendix Figures 1 to 5 As shown, a method for producing industrial ammonium nitrate and porous ammonium nitrate includes the following steps:

[0050] Processing of porous ammonium nitrate

[0051] S1. Material pretreatment: 96-98% ammonium nitrate solution from the outside is sent to the first processing chamber 11 from the outside. Then, the solution is transported to the second processing chamber 14 by the use of the conveying pump 13. After being mixed with the additive solution from the additive storage chamber 12, it is stirred evenly by the stirrer 16 in the conveying pump 13 and then transported to the granulation unit 2.

[0052] S2. Granulation process: The solution input in the above steps enters the granulation component 21 and is sprayed out through the granulation nozzle in the granulation component 21. After heat and mass transfer with the counter-current rising air, the temperature is reduced to 50~60°C, and the molten liquid gradually forms solid ammonium nitrate, which falls into the first conveyor belt 22 and is then transported to the second conveyor belt 23. The second conveyor belt 23 then transports it to the drying drum 24, where the solid ammonium nitrate is dried by blowing hot air through the drying drum 24. After drying, it exits the drying drum 24 and is first sent to the third conveyor belt 25, and then to the bucket elevator 26. After being lifted by the bucket elevator 26, it is input into the screening mechanism 3.

[0053] S3. Screening process: First, the finished product with standard particle size is screened out by the screener 31. The qualified particles fall into the plate cooler 33 for cooling and cooling. The unqualified particles return to the first processing chamber 11 through the conveyor pipe 32. After being stirred and dissolved by the agitator 16, this solution is sent to the granulation with the ammonium nitrate solution. The temperature of the finished ammonium nitrate in this path is reduced to below 31°C by the plate cooler 33. Then it falls into the fifth conveyor belt 34 and is conveyed to the coating roller 35. After being coated with sprayed coating oil in the coating roller 35, it is conveyed to the sixth conveyor belt 36 and finally falls into the finished product silo 37 to enter the packaging process, completing the processing of porous ammonium nitrate.

[0054] For industrial ammonium nitrate processing

[0055] S4. Cleaning: First, clean the residual ammonium nitrate in the first and second processing chambers 11 and 14, wrapping roller 35, first conveyor belt 22, second conveyor belt 23 and other conveyor belts and various equipment used in the original production of porous ammonium nitrate.

[0056] S5. Pretreatment: The 96-98% ammonium nitrate solution sent from the outside is input into the first processing chamber 11, and then transported to the second-stage evaporator 41 through the transfer pump body 13. The original solution is processed by the operation of the second-stage evaporator 41, and evaporated and concentrated to about 99.5%. The solution is then input into the second processing chamber 14.

[0057] S6. After processing, the material is fed into the granulation unit 21 and granulated. After granulation, the material is conveyed by the first conveyor belt 22 and the second conveyor belt 23, then transferred to the fourth conveyor belt 27 and sent to the bucket elevator 26. The material is then processed according to the screening process proposed in S3 to complete the processing of industrial ammonium nitrate.

[0058] The above description, in conjunction with specific embodiments, provides a further detailed explanation of the present utility model. It should not be construed that the specific implementation of the present utility model is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present utility model, and all such deductions or substitutions should be considered to fall within the scope of protection defined by the claims submitted by the present utility model.

Claims

1. An apparatus for producing industrial ammonium nitrate and porous ammonium nitrate, characterized in that, The device includes a pretreatment component (1), a granulation component (2), a screening mechanism (3), and an evaporation component (4). The pretreatment component (1) collects and transports industrial ammonium nitrate solution and porous ammonium nitrate solution. The granulation component (2) receives the solution transported by the pretreatment component (1) and processes it into fixed granules. The granulation component (2) is provided with a screening mechanism (3) on its side for screening and wrapping solid particles. The pretreatment component (1) is connected to an evaporation component (4) for heat exchange in the processing of industrial ammonium nitrate through a pipeline.

2. The apparatus for producing industrial ammonium nitrate and porous ammonium nitrate according to claim 1, characterized in that: The pretreatment component (1) includes a first processing chamber (11), an additive storage chamber (12), a delivery pump (13), and a second processing chamber (14). The bottom outlet of the first processing chamber (11) is connected to the delivery pump (13) through a pipe. The output end of the delivery pump (13) is connected to the second processing chamber (14) through a pipe. The side of the second processing chamber (14) is provided with an additive storage chamber (12) for replenishing the additive solution inside the second processing chamber (14).

3. The apparatus for producing industrial ammonium nitrate and porous ammonium nitrate according to claim 1, characterized in that: The pretreatment component (1) further includes a solution input pipe (15) and a stirrer (16). The solution input pipe (15) is connected to one side of the surface of the first processing chamber (11). Both the first processing chamber (11) and the second processing chamber (14) are equipped with stirrers (16) for stirring the internal solution.

4. The apparatus for producing industrial ammonium nitrate and porous ammonium nitrate according to claim 1, characterized in that: The granulation component (2) includes a granulation part (21), a first conveyor belt (22), a second conveyor belt (23), a drying drum (24), a third conveyor belt (25), and a bucket elevator (26). The granulation part (21) processes the solution mixed inside the pretreatment component (1). A dedicated granulation nozzle is installed inside the granulation part (21). A first conveyor belt (22) is provided at the bottom outlet of the granulation part (21). A second conveyor belt (23) is provided on the side of the first conveyor belt (22). A drying drum (24) is provided on the side of the second conveyor belt (23) for drying the material. A third conveyor belt (25) for conveying the material is provided on the side of the drying drum (24). A bucket elevator (26) for stably conveying the material is provided on the side of the third conveyor belt (25).

5. The apparatus for producing industrial ammonium nitrate and porous ammonium nitrate according to claim 4, characterized in that: The granulation component (2) also includes a fourth conveyor belt (27), which is located below the drying drum (24). When the granulation component (21) processes industrial ammonium nitrate, the material is stably conveyed by the fourth conveyor belt (27).

6. The apparatus for producing industrial ammonium nitrate and porous ammonium nitrate according to claim 1, characterized in that: The screening mechanism (3) includes a screener (31), a plate cooler (33), a fifth conveyor belt (34), a wrapping roller (35), a sixth conveyor belt (36), and a finished product silo (37). The screener (31) is installed on the side of the granulation component (2) to screen the material conveyed by the granulation component (2). The plate cooler (33) is located at the discharge end of the screener (31). The fifth conveyor belt (34) is located at the bottom end of the plate cooler (33). The wrapping roller (35) is located on the side of the fifth conveyor belt (34) and sprays wrapping oil onto the material to wrap it. The side of the sixth conveyor belt (36) is provided with a finished product silo (37) for storing the processed material.

7. The apparatus for producing industrial ammonium nitrate and porous ammonium nitrate according to claim 6, characterized in that: The screening mechanism (3) also includes a conveying pipe (32) for unqualified materials after screening, and the conveying pipe (32) is connected to the pretreatment component (1).

8. The apparatus for producing industrial ammonium nitrate and porous ammonium nitrate according to claim 1, characterized in that: The evaporation assembly (4) includes a two-stage evaporator (41) and a steam condensate tank (42). The top of the pretreatment assembly (1) is provided with a two-stage evaporator (41) for increasing the concentration of the ammonium nitrate solution, and the side of the two-stage evaporator (41) is provided with a steam condensate tank (42) for collecting steam condensate.

9. The apparatus for producing industrial ammonium nitrate and porous ammonium nitrate according to claim 6, characterized in that: The evaporation assembly (4) also includes an air heater (43), a pressurizing fan (44), and an air filter (45). The air filter (45) is located on the side of the second-stage evaporator (41) and filters the outside air. The pressurizing fan (44) is installed on the side of the air filter (45) and pressurizes the air filtered inside the air filter (45). The air heater (43) is connected to the side of the pressurizing fan (44) through a pipeline and heats the pressurized gas before inputting it into the second-stage evaporator (41).

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