A device for preparing water-soluble fertilizer from flame retardant production tailings

Abstract

The utility model discloses a device for preparing water-soluble fertilizer from flame retardant production tailings, and belongs to the field of water-soluble fertilizer. The swelling solution of ammonium polyphosphate produced by the utility model does not reduce the polymerization degree of the ammonium polyphosphate flame retardant production tailings, and can be directly used as slow-release water-soluble fertilizer.

Description

Technical Field

[0001] This utility model relates to water-soluble fertilizers, and in particular to an apparatus for preparing water-soluble fertilizers from the tailings of flame retardant production. Background Technology

[0002] Ammonium polyphosphate with a degree of polymerization greater than 1000 is used as a flame retardant. The waste generated during the production of ammonium polyphosphate with a degree of polymerization greater than 1000, including sweeping materials and reactor cleaning materials, has low whiteness, uneven degree of polymerization, high water solubility, and contains mechanical impurities. Directly returning it to the ammonium polyphosphate flame retardant product will affect the product quality. Moreover, since ammonium polyphosphate with a degree of polymerization greater than 1000 is insoluble in water, it is usually treated as waste. Utility Model Content

[0003] To address the aforementioned deficiencies, this application provides an apparatus for preparing water-soluble fertilizer from flame retardant production tailings. The ammonium polyphosphate swelling solution produced by this apparatus can be directly used as a slow-release water-soluble fertilizer.

[0004] An apparatus for preparing water-soluble fertilizer from flame retardant production tailings includes a reactor and a product tank. The reactor is equipped with a feed inlet for ammonium polyphosphate flame retardant production tailings, located at the top of the reactor. The reactor is also connected to a water inlet pipe and a water-soluble fertilizer discharge pipe. One end of the water inlet pipe extends into the bottom of the reactor's inner cavity, and the other end is located outside the reactor wall. The water-soluble fertilizer discharge pipe is connected to the bottom of the reactor, and the other end is located inside the product tank. A product discharge pipe is connected to the bottom of the product tank. The reactor is equipped with a heating jacket, which has a steam inlet and a steam outlet. The steam inlet is located at the bottom of the reactor, and the steam outlet is located at the top of the reactor.

[0005] In one or more optional embodiments of this utility model, a separation aid feed pipe is connected to the water inlet pipe, and the other end of the feed pipe 16 is connected to the bottom of a separation aid metering cup.

[0006] In one or more optional embodiments of this utility model, an online pH meter, an online viscometer, and a temperature sensor are respectively installed inside the reaction vessel.

[0007] In one or more optional embodiments of this utility model, a spiral coil is installed inside the heating jacket, with both ends of the spiral coil extending out of the heating jacket, one end being a steam inlet and the other end being a steam outlet.

[0008] In one or more optional embodiments of this utility model, the reactor is connected to a first weighing bracket, and a first weighing sensor is connected to the lower surface of the first weighing bracket; the product tank is connected to a second weighing bracket, and a second weighing sensor is connected to the lower surface of the second weighing bracket; after the first weighing bracket, the first weighing sensor, the second weighing bracket, and the second weighing sensor are set up, in use, the first weighing bracket and the second weighing bracket are placed on the platform, and the first weighing sensor and the second weighing sensor are used.

[0009] In one or more optional embodiments of this utility model, a filter and a centrifugal pump are provided on the water-soluble fertilizer discharge pipe.

[0010] In one or more optional embodiments of this utility model, the reactor is provided with a stirring system. The stirring system is used to mix materials in the initial stage of production to make the liquid in the reactor evenly distributed. In the subsequent production stage, it disperses, crushes, and breaks down the materials to change their physical state. The stirring system includes a drive mechanism, a rotating shaft, and a stirring mechanism. The drive mechanism is located outside the reactor wall, and the stirring mechanism is located inside the reactor wall. One end of the rotating shaft is connected to the drive mechanism, and the other end is connected to the stirring mechanism.

[0011] In one or more optional embodiments of this utility model, the reaction vessel is provided with a stirring system, which is a variable frequency speed-regulating stirrer.

[0012] In one or more optional embodiments of this utility model, a breather valve is provided on the top of the product tank, and a submersible agitator is provided inside the product tank.

[0013] Utility model principle and beneficial effects:

[0014] In this invention, the tailings from the production of ammonium polyphosphate flame retardants with a degree of polymerization greater than 1000 are swelled and filtered at high temperature to form a uniform transparent liquid, removing mechanical impurities from the tailings. Due to the neutral pH conditions, the hydrolysis of ammonium polyphosphate is limited, and the degree of polymerization remains basically unchanged. It has good resistance to hard water and slow-release properties. It is stable after being diluted 300 times with 25-degree hard water and left for 24 hours. It can be directly used as a long-acting slow-release fertilizer or water-soluble fertilizer. The swelling process of this invention is under neutral conditions, so the requirements for equipment materials are not high. Attached Figure Description

[0015] Figure 1 A schematic diagram of the overall structure of the apparatus for preparing water-soluble fertilizer from the tailings of the flame retardant production of this utility model;

[0016] Figure 2 This is a schematic diagram of the spiral coil structure of this utility model;

[0017] In the diagram: 1. Reactor; 11. Heating jacket; 111. Steam inlet; 112. Steam outlet; 12. Stirring system; 121. Stirring mechanism; 122. Rotating shaft; 123. Drive mechanism; 13. Feed port for waste material from ammonium polyphosphate flame retardant production; 141. First weighing support; 142. First weighing sensor; 143. Online pH meter; 144. Online viscometer; 145. Temperature sensor; 15. Water inlet pipe; 16. Separation aid feed pipe; 161. Separation aid measuring cup; 17. Water-soluble fertilizer discharge pipe; 2. Product tank; 21. Product discharge pipe; 22. Breathing valve; 23. Submersible agitator; 24. Second weighing support; 25. Second weighing sensor; 3. Filter; 4. Centrifugal pump. Detailed Implementation

[0018] This application will be further explained below.

[0019] In the description of this utility model, it should be noted that the terms "center," "upper," and "center" are used interchangeably.

[0020] "Down", "Left", "Right", "Vertical", "Longitudinal", "Lateral", "Horizontal"

[0021] The terms "inner," "outer," "front," "rear," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing the present invention and for simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the term "first,"

[0022] The terms "second" and "third" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0023] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "have," "install," "connect," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] Please refer to Figures 1-2 , Figure 1 This is a schematic diagram of the overall structure of the device for preparing water-soluble fertilizer from the tailings of ammonium polyphosphate flame retardant production with a degree of polymerization greater than 1000, according to this utility model. Figure 2This is a schematic diagram of the spiral coil structure of this utility model.

[0025] A schematic diagram of the overall structure of an apparatus for preparing water-soluble fertilizer from flame retardant production tailings includes a reactor 1 and a product tank 2. The reactor 1 is provided with a polyphosphate flame retardant production tailings inlet 13, which is located at the upper part of the reactor 1. The reactor 1 is also connected to a water inlet pipe 15 and a water-soluble fertilizer discharge pipe 17. One end of the water inlet pipe 15 extends into the bottom of the inner cavity of the reactor 1, and the other end is located outside the wall of the reactor 1. The water-soluble fertilizer discharge pipe 17 is connected to the bottom of the reactor 1, and the other end of the water-soluble fertilizer discharge pipe 17 is located inside the inner cavity of the product tank 2. The bottom of the product tank 2 is connected to a product discharge pipe 21. The reactor 1 is provided with a heating jacket 11, which is provided with a steam inlet end 111 and a steam outlet end 112. The steam inlet end 111 is located at the lower part of the reactor 1, and the steam outlet end 112 is located at the upper part of the reactor 1.

[0026] In one or more specific embodiments of this utility model, a spiral coil is installed inside the heating jacket 11, with both ends of the spiral coil extending out of the heating jacket 11. One end is a steam inlet 111, and the other end is a steam outlet 112.

[0027] In one or more specific embodiments of this utility model, the reactor 1 is equipped with a stirring system 12. The stirring system 12 is used to mix materials in the initial stage of production, ensuring uniform distribution of the liquid within the reactor 1. In subsequent production stages, it disperses, pulverizes, and crushes the materials, altering their physical state. The stirring system 12 includes a drive mechanism 123, a rotating shaft 122, and a stirring mechanism 121. The drive mechanism 123 is located outside the reactor wall of the reactor 1, and the stirring mechanism 121 is located inside the reactor wall. One end of the rotating shaft 122 is connected to the drive mechanism 123, and the other end is connected to the stirring mechanism 121. The drive mechanism 123 can be an electrically driven motor or a hydraulically driven hydraulic cylinder. The stirring system 12 is preferably a variable frequency speed-regulating stirrer.

[0028] In one or more specific embodiments of this utility model, a filter 3 and a centrifugal pump 4 are provided on the water-soluble fertilizer discharge pipe 17.

[0029] In one or more specific embodiments of this utility model, the reactor 1 is connected to a first weighing support 141, and a first weighing sensor 142 is connected to the lower surface of the first weighing support 141. The product tank 2 is connected to a second weighing support 24, and a second weighing sensor 25 is connected to the lower surface of the second weighing support 24. After the first weighing support 141, the first weighing sensor 142, the second weighing support 24, and the second weighing sensor 25 are set up, during use, the first weighing support 141 and the second weighing support 24 are placed on a platform. Through the first weighing sensor 142 and the second weighing sensor 25, the operator can monitor the weight changes of the reactor 1 and the product tank 2 at any time, know how much reaction material is added, and how much product is produced, which facilitates precise reaction control.

[0030] In one or more specific embodiments of this utility model, in order to observe the pH, viscosity and temperature inside the reaction vessel 1 at any time, an online pH meter 143, an online viscometer 144 and a temperature sensor 145 are respectively installed inside the reaction vessel 1.

[0031] In one or more specific embodiments of this utility model, a breather valve 22 is provided on the top of the product tank 2, and a submersible agitator 23 is provided inside the product tank 2.

[0032] In one or more specific embodiments of this utility model, a separation aid feed pipe 16 is connected to the water inlet pipe 15, and the other end of the feed pipe 16 is connected to the bottom of a separation aid metering cup 161.

[0033] The tailings from the production of ammonium polyphosphate flame retardant with a degree of polymerization greater than 1000 were mixed evenly, with an average degree of polymerization of 1200, and used in the production of Examples 1-6 and Comparative Example 1 below.

[0034] Commercially available ammonium polyphosphate with a degree of polymerization of 1200 was used in the production of Comparative Example 2.

[0035] The following Examples 1-6 and Comparative Examples 1-2 employ the present invention. Figures 1-2 The device.

[0036] Example 1

[0037] A method for preparing water-soluble fertilizer using waste materials from the production of ammonium polyphosphate flame retardants with a degree of polymerization greater than 1000 includes the following steps:

[0038] S1, 10 kg of ammonium polyphosphate tailings are added to reactor 1, 50 kg of water is added to reactor 1, and the mixture is stirred evenly at a stirring speed of 200 r / min.

[0039] S2, start shear stirring, stir at 1000 r / min, stir until uniform, heat to 90℃, continue shear stirring for 30 minutes to obtain ammonium polyphosphate swelling solution.

[0040] S3, the ammonium polyphosphate swelling solution is discharged from the water-soluble fertilizer discharge pipe 17 into the product tank 2.

[0041] In this embodiment, when the ammonium polyphosphate swelling solution is discharged from the water-soluble fertilizer discharge pipe 17 into the product tank 2, the filter 3 is in a non-working state.

[0042] The coating condition of the S2 ammonium polyphosphate swelling solution and the product condition of product tank 2 were observed, and the results are shown in Table 1 below.

[0043] Example 2

[0044] A method for preparing water-soluble fertilizer using waste materials from the production of ammonium polyphosphate flame retardants with a degree of polymerization greater than 1000 includes the following steps:

[0045] S1, 10 kg of ammonium polyphosphate tailings are added to reactor 1, 50 kg of water is added to reactor 1, and the mixture is stirred evenly at a stirring speed of 200 r / min.

[0046] S2, start shear stirring, stir at 1000 r / min, stir until uniform, heat to 90℃, continue shear stirring for 30 minutes to obtain ammonium polyphosphate swelling solution.

[0047] S3, the ammonium polyphosphate swelling solution is discharged from the water-soluble fertilizer discharge pipe 17 into the product tank 2, and filtered by the filter 3 during discharge.

[0048] In this embodiment, the filter 3 is in operation when the ammonium polyphosphate swelling solution is discharged from the water-soluble fertilizer discharge pipe 17 into the product tank 2.

[0049] The coating condition of the S2 ammonium polyphosphate swelling solution, the filtration condition of filter 3, and the product condition of product tank 2 were observed. The results are shown in Table 1 below.

[0050] Example 3

[0051] A method for preparing water-soluble fertilizer using waste materials from the production of ammonium polyphosphate flame retardants with a degree of polymerization greater than 1000 includes the following steps:

[0052] S1, 10 kg of ammonium polyphosphate tailings are added to reactor 1. 50 kg of water and 250 g of magnesium stearate are added to reactor 1 (after the magnesium stearate is measured and confirmed in separation aid metering cup 161, an appropriate amount of water is added to separation aid metering cup 161. The mixture of magnesium stearate and water first enters separation aid metering cup 161 and then enters separation aid feed pipe 16. The remaining water enters from water inlet pipe 15). Stir evenly at a stirring speed of 200 r / min. When loading, magnesium stearate enters reactor 1 first, and then water is added.

[0053] S2, start shear stirring, stir at 1000 r / min, stir until uniform, heat to 90℃, continue shear stirring for 30 minutes to obtain ammonium polyphosphate swelling solution.

[0054] S3, the ammonium polyphosphate swelling solution is discharged from the water-soluble fertilizer discharge pipe 17 into the product tank 2, and filtered by the filter 3 during discharge.

[0055] In this embodiment, the filter 3 is in operation when the ammonium polyphosphate swelling solution is discharged from the water-soluble fertilizer discharge pipe 17 into the product tank 2.

[0056] The coating condition of the S2 ammonium polyphosphate swelling solution, the filtration condition of filter 3, and the product condition of product tank 2 were observed. The results are shown in Table 1 below.

[0057] Example 4

[0058] A method for preparing water-soluble fertilizer using waste materials from the production of ammonium polyphosphate flame retardants with a degree of polymerization greater than 1000 includes the following steps:

[0059] S1, 10 kg of ammonium polyphosphate tailings are added to reactor 1. 50 kg of water and 250 g of calcium stearate are added to reactor 1 (after the calcium stearate is measured and confirmed in separation aid metering cup 161, an appropriate amount of water is added to separation aid metering cup 161. The mixture of calcium stearate and water first enters separation aid metering cup 161 and then enters separation aid feed pipe 16. The remaining water enters from water inlet pipe 15). Stir evenly at a stirring speed of 200 r / min. When loading, calcium stearate enters reactor 1 first, and then water is added.

[0060] S2, start shear stirring, stir at 1000 r / min, stir until uniform, heat to 90℃, continue shear stirring for 30 minutes to obtain ammonium polyphosphate swelling solution.

[0061] S3, the ammonium polyphosphate swelling solution is discharged from the water-soluble fertilizer discharge pipe 17 into the product tank 2, and filtered by the filter 3 during discharge.

[0062] In this embodiment, the filter 3 is in operation when the ammonium polyphosphate swelling solution is discharged from the water-soluble fertilizer discharge pipe 17 into the product tank 2.

[0063] The coating condition of the S2 ammonium polyphosphate swelling solution, the filtration condition of filter 3, and the product condition of product tank 2 were observed. The results are shown in Table 1 below.

[0064] Comparative Example 1

[0065] A method for preparing water-soluble fertilizer using waste materials from the production of ammonium polyphosphate flame retardants with a degree of polymerization greater than 1000 includes the following steps:

[0066] S1, 10 kg of ammonium polyphosphate tailings are added to reactor 1. 50 kg of water and 250 g of magnesium silicate are added to reactor 1 (after the magnesium silicate is measured and confirmed in separation aid metering cup 161, an appropriate amount of water is added to separation aid metering cup 161. The mixture of magnesium silicate and water first enters separation aid metering cup 161 and then enters separation aid feed pipe 16. The remaining water enters from water inlet pipe 15). Stir evenly at a stirring speed of 200 r / min. When loading, magnesium silicate enters reactor 1 first, and then water is added.

[0067] S2, start shear stirring, stir at 1000 r / min, stir until uniform, heat to 90℃, continue shear stirring for 30 minutes to obtain ammonium polyphosphate swelling solution.

[0068] S3, the ammonium polyphosphate swelling solution is discharged from the water-soluble fertilizer discharge pipe 17 into the product tank 2, and filtered by the filter 3 during discharge.

[0069] In this embodiment, the filter 3 is in operation when the ammonium polyphosphate swelling solution is discharged from the water-soluble fertilizer discharge pipe 17 into the product tank 2.

[0070] The coating condition of the S2 ammonium polyphosphate swelling solution, the filtration condition of filter 3, and the product condition of product tank 2 were observed. The results are shown in Table 1 below.

[0071] Example 5

[0072] A method for preparing water-soluble fertilizer using waste materials from the production of ammonium polyphosphate flame retardants with a degree of polymerization greater than 1000 includes the following steps:

[0073] S1, 10 kg of ammonium polyphosphate tailings are added to reactor 1. 50 kg of water, 100 g of magnesium stearate, and 150 g of calcium stearate are added to reactor 1 (after the magnesium stearate and calcium stearate are measured and determined in the separation aid metering cup 161, an appropriate amount of water is added to the separation aid metering cup 161. The mixture of magnesium stearate, calcium stearate, and water first enters the separation aid metering cup 161 and then enters the separation aid feed pipe 16. The remaining water enters from the water inlet pipe 15). Stir evenly at a stirring speed of 200 r / min. When loading, the mixture of magnesium stearate and calcium stearate first enters reactor 1, and then water is added.

[0074] S2, start shear stirring, stir at 1000 r / min, stir until uniform, heat to 90℃, continue shear stirring for 30 minutes to obtain ammonium polyphosphate swelling solution.

[0075] S3, the ammonium polyphosphate swelling solution is discharged from the water-soluble fertilizer discharge pipe 17 into the product tank 2, and filtered by the filter 3 during discharge.

[0076] In this embodiment, the filter 3 is in operation when the ammonium polyphosphate swelling solution is discharged from the water-soluble fertilizer discharge pipe 17 into the product tank 2.

[0077] The coating condition of the S2 ammonium polyphosphate swelling solution, the filtration condition of filter 3, and the product condition of product tank 2 were observed. The results are shown in Table 1 below.

[0078] Example 6

[0079] A method for preparing water-soluble fertilizer using waste materials from the production of ammonium polyphosphate flame retardants with a degree of polymerization greater than 1000 includes the following steps:

[0080] S1, 10 kg of ammonium polyphosphate tailings are added to reactor 1. 50 kg of water, 100 g of magnesium stearate, and 100 g of calcium stearate are added to reactor 1 (after the magnesium stearate and calcium stearate are measured and determined in the separation aid metering cup 161, an appropriate amount of water is added to the separation aid metering cup 161. The mixture of magnesium stearate, calcium stearate, and water first enters the separation aid metering cup 161 and then enters the separation aid feed pipe 16. The remaining water enters from the water inlet pipe 15). Stir evenly at a stirring speed of 200 r / min. When loading, the mixture of magnesium stearate and calcium stearate first enters reactor 1, and then water is added.

[0081] S2, start shear stirring, stir at 1000 r / min, stir until uniform, heat to 90℃, continue shear stirring for 30 minutes to obtain ammonium polyphosphate swelling solution.

[0082] S3, the ammonium polyphosphate swelling solution is discharged from the water-soluble fertilizer discharge pipe 17 into the product tank 2, and filtered by the filter 3 during discharge.

[0083] In this embodiment, the filter 3 is in operation when the ammonium polyphosphate swelling solution is discharged from the water-soluble fertilizer discharge pipe 17 into the product tank 2.

[0084] The coating condition of the S2 ammonium polyphosphate swelling solution, the filtration condition of filter 3, and the product condition of product tank 2 were observed. The results are shown in Table 1 below.

[0085] Comparative Example 2

[0086] A method for preparing water-soluble fertilizer from ammonium polyphosphate includes the following steps:

[0087] S1, 10 kg of ammonium polyphosphate tailings are added to reactor 1, 50 kg of water is added to reactor 1, and the mixture is stirred evenly at a stirring speed of 200 r / min.

[0088] S2, start shear stirring, stir at 1000 r / min, stir until uniform, heat to 90℃, continue shear stirring for 30 minutes to obtain ammonium polyphosphate swelling solution.

[0089] S3, the ammonium polyphosphate swelling solution is discharged from the water-soluble fertilizer discharge pipe 17 into the product tank 2.

[0090] In this embodiment, when the ammonium polyphosphate swelling solution is discharged from the water-soluble fertilizer discharge pipe 17 into the product tank 2, the filter 3 is in a non-working state.

[0091] The coating condition of the S2 ammonium polyphosphate swelling solution and the product condition of product tank 2 were observed, and the results are shown in Table 1 below.

[0092] Table 1

[0093]

[0094]

[0095] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An apparatus for preparing water-soluble fertilizer from flame retardant production tailings, characterized in that, The system includes a reactor (1) and a product tank (2). The reactor (1) is equipped with a feed inlet (13) for the tail material from the production of ammonium polyphosphate flame retardant. The feed inlet (13) is located at the top of the reactor (1). The reactor (1) is also connected to a water inlet pipe (15) and a water-soluble fertilizer discharge pipe (17). One end of the water inlet pipe (15) extends into the bottom of the inner cavity of the reactor (1), and the other end is located outside the wall of the reactor (1). The water-soluble fertilizer discharge pipe (17) The other end of the water-soluble fertilizer discharge pipe (17) connected to the bottom of the reactor (1) is located inside the product tank (2). The bottom of the product tank (2) is connected to the product discharge pipe (21). The reactor (1) is equipped with a heating jacket (11). The heating jacket (11) is equipped with a steam inlet end (111) and a steam outlet end (112). The steam inlet end (111) is located at the bottom of the reactor (1), and the steam outlet end (112) is located at the top of the reactor (1).

2. The apparatus for preparing water-soluble fertilizer from flame retardant production tailings according to claim 1, characterized in that, The water inlet pipe (15) is connected to a separation aid feed pipe (16), and the other end of the feed pipe (16) is connected to the bottom of a separation aid metering cup (161).

3. The apparatus for preparing water-soluble fertilizer from flame retardant production tailings according to claim 1, characterized in that, The reactor (1) is equipped with an online pH meter (143), an online viscometer (144), and a temperature sensor (145).

4. The apparatus for preparing water-soluble fertilizer from flame retardant production tailings according to claim 1, characterized in that, The heating jacket (11) is equipped with a spiral coil with both ends extending out of the heating jacket (11). One end is the steam inlet (111), and the other end is the steam outlet (112).

5. The apparatus for preparing water-soluble fertilizer from flame retardant production tailings according to claim 1, characterized in that, The reactor (1) is connected to a first weighing support (141), and a first weighing sensor (142) is connected to the lower surface of the first weighing support (141). The product tank (2) is connected to a second weighing support (24), and a second weighing sensor (25) is connected to the lower surface of the second weighing support (24). After the first weighing support (141), the first weighing sensor (142), the second weighing support (24) and the second weighing sensor (25) are set up, when in use, the first weighing support (141) and the second weighing support (24) are placed on the platform, and the first weighing sensor (142) and the second weighing sensor (25) are used.

6. The apparatus for preparing water-soluble fertilizer from flame retardant production tailings according to claim 1, characterized in that, The water-soluble fertilizer discharge pipe (17) is equipped with a filter (3) and a centrifugal pump (4).

7. The apparatus for preparing water-soluble fertilizer from flame retardant production tailings according to claim 1, characterized in that, The reactor (1) is equipped with a stirring system (12). The stirring system (12) is used to mix materials in the initial stage of production to make the liquid in the reactor (1) evenly distributed. In the subsequent production stage, it disperses, crushes and breaks down the materials to change their physical state. The stirring system (12) includes a drive mechanism (123), a rotating shaft (122) and a stirring mechanism (121). The drive mechanism (123) is located outside the reactor wall of the reactor (1), and the stirring mechanism (121) is located inside the reactor wall of the reactor (1). One end of the rotating shaft (122) is connected to the drive mechanism (123), and the other end is connected to the stirring mechanism (121).

8. The apparatus for preparing water-soluble fertilizer from flame retardant production tailings according to claim 1, characterized in that, The reactor (1) is equipped with a stirring system (12), which is a variable frequency speed-regulating stirrer.

9. The apparatus for preparing water-soluble fertilizer from flame retardant production tailings according to claim 1, characterized in that, The product tank (2) is equipped with a breather valve (22) on the top and a submersible agitator (23) inside the product tank (2).

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