A production system for preparing magnesium ammonium phosphate and inositol using corn soaking water

Abstract

The utility model relates to corn soaking water treatment technical field especially, relates to a kind of production system for preparing ammonium magnesium phosphate and inositol with corn soaking water, including the pH regulating tank being connected with corn soaking water delivery pipeline, pH regulating tank, first filter device, resin column, neutralization kettle, second filter device, hydrolysis kettle, pH adjusting kettle, third filter device are sequentially connected in proper order, the liquid outlet of third filter device is connected with decoloring kettle, concentration kettle, crystallization kettle, the crystal outlet of crystallization kettle is connected with first drying device, the discharge port of first drying device is connected with inositol storage tank;The discharge port of third filter device is connected with second drying device, the discharge port of second drying device is connected with ammonium magnesium phosphate storage tank.The above-mentioned production system system, corn soaking water is recycled, and high yield, high recovery, high-purity ammonium magnesium phosphate product and inositol product are obtained, and resource waste is avoided, and economic benefit is increased for enterprise.

Description

Technical Field

[0001] This utility model relates to the field of corn soaking water treatment technology, and in particular to a production system for preparing magnesium ammonium phosphate and inositol using corn soaking water. Background Technology

[0002] Magnesium ammonium phosphate is an important chemical product with wide applications in agriculture and environmental protection, such as as a slow-release compound fertilizer and for treating phosphorus-containing wastewater. Inositol is a vitamin-like substance with important uses in the pharmaceutical, food, and feed industries. Current traditional methods for preparing magnesium ammonium phosphate require the consumption of pure chemicals, resulting in high costs. Inositol production processes often use corn phytate (calcium magnesium phytate) as a raw material, requiring strong acid hydrolysis, which leads to equipment corrosion and waste acid pollution. Corn soaking water, a byproduct of corn starch processing, is rich in phytic acid (inositol hexaphosphate), and traditional treatment methods often result in wastewater discharge, causing resource waste and environmental pollution. Developing a process for preparing magnesium ammonium phosphate and inositol from corn soaking water can achieve the dual goals of efficient resource utilization and environmental protection. Therefore, how to effectively employ a production system to prepare high-yield, high-purity magnesium ammonium phosphate and inositol from corn soaking water is an urgent technical problem to be solved. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a production system for preparing magnesium ammonium phosphate and inositol using corn soaking water, which can produce magnesium ammonium phosphate and inositol products with high yield, high efficiency and high purity, thus avoiding resource waste.

[0004] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:

[0005] A production system for preparing magnesium ammonium phosphate and inositol using corn soaking water includes a pH adjusting tank connected to a corn soaking water delivery pipeline; the outlet of the pH adjusting tank is connected to a first filtration device; the outlet of the first filtration device is connected to the inlet of a resin column, which is also connected to a descaling agent pipeline; the outlet of the descaling agent from the resin column is connected to a neutralization vessel; the outlet of the neutralization vessel is connected to a second filtration device; the outlet of the second filtration device is connected to the inlet of a hydrolysis vessel, which is connected to a purified water delivery pipeline; the outlet of the hydrolysis vessel is connected to a pH adjusting tank; the outlet of the pH adjusting tank is connected to a third filtration device; the outlet of the third filtration device is connected to a decolorization vessel, the outlet of the decolorization vessel is connected to a concentration vessel, the outlet of the concentration vessel is connected to a crystallization vessel, the crystal outlet of the crystallization vessel is connected to a first drying device, and the outlet of the first drying device is connected to an inositol storage tank; the outlet of the third filtration device is connected to a second drying device, and the outlet of the second drying device is connected to a magnesium ammonium phosphate storage tank.

[0006] As an improved technical solution, the pH adjustment tank includes a tank body, an inlet on the upper side of the tank body, an acid inlet and a sampling port on the top of the tank body, an outlet on the lower side of the tank body, a horizontal rotating shaft inside the tank body, a motor connected to one end of the rotating shaft, multiple annular stirring bodies on the rotating shaft, and multiple stirring plates on the annular stirring bodies.

[0007] As an improved technical solution, the first filter device, the second filter device, and the third filter device are all plate and frame filters.

[0008] As an improved technical solution, the resin column is an anion exchange resin column.

[0009] As an improved technical solution, the neutralization vessel includes a vessel body, with a feed inlet and a magnesium oxide inlet at the top of the vessel body and a discharge outlet at the bottom of the vessel body; the vessel body is equipped with a jacket on the outside, and a rotating shaft, a pH sensor and a temperature sensor are provided inside the vessel body; one end of the rotating shaft is connected to a motor, and multiple hollowed-out stirring plates are provided on the rotating shaft; the pH sensor and the temperature sensor are electrically connected to a controller respectively.

[0010] As an improved technical solution, the hydrolysis vessel includes a vessel body, with a feed inlet and a purified water inlet at the top of the vessel body, and a discharge outlet at the bottom of the vessel body; the vessel body is equipped with a jacket on the outside, and a rotating shaft, a pressure sensor, and a temperature sensor are provided inside the vessel body; one end of the rotating shaft is connected to a motor, and multiple stirring rods are provided on the rotating shaft, with multiple stirring blades on the stirring rods; the pressure sensor and the temperature sensor are electrically connected to a controller respectively.

[0011] As an improved technical solution, the pH adjusting vessel includes a vessel body, with a feed inlet, an ammonia inlet, and a magnesium oxide inlet at the top of the vessel body, and a discharge outlet at the bottom of the vessel body; the vessel body is equipped with a jacket on the outside, and a rotating shaft and a pH sensor are installed inside the vessel body; one end of the rotating shaft is connected to a motor, and a cylindrical stirring frame is installed on the rotating shaft, with multiple stirring rods installed on the stirring frame; the pH sensor is electrically connected to a controller.

[0012] As an improved technical solution, the decolorizing kettle includes a kettle body, with a liquid inlet at the top of the kettle body, a decolorizing agent outlet at the bottom of the kettle body, a decolorizing liquid outlet on one side of the lower part of the kettle body, and a filter screen on the inner wall of the kettle body corresponding to the decolorizing liquid outlet; the kettle body is provided with a jacket on the outside, and a rotating shaft is provided inside the kettle body, with one end of the rotating shaft connected to a motor, and multiple hollowed-out stirring blades provided on the rotating shaft.

[0013] As an improved technical solution, the concentration vessel includes a vessel body, with a decolorizing liquid inlet at the top and a concentrate outlet at the bottom; the vessel body is provided with a jacket on the outside and a rotating shaft inside the vessel body, one end of the rotating shaft being connected to a motor, a square stirring frame on the rotating shaft, and multiple stirring rods on the square stirring frame.

[0014] As an improved technical solution, the crystallization vessel includes a vessel body, a feed inlet at the top of the vessel body, a crystal outlet at the bottom of the vessel body, a crystallization mother liquor outlet on one side of the lower part of the vessel body, and a filter screen on the inner wall of the vessel body corresponding to the crystallization mother liquor outlet; a jacket is provided on the outside of the vessel body, and a rotating shaft is provided inside the vessel body, one end of the rotating shaft is connected to a motor, and multiple stirring rods are provided on the rotating shaft, with multiple spiral blades on the stirring rods.

[0015] After adopting the above technical solution, the beneficial effects of this utility model are:

[0016] The production system for preparing magnesium ammonium phosphate and inositol using corn soaking water includes a pH adjustment tank connected to a corn soaking water delivery pipeline. The outlet of the pH adjustment tank is connected to a first filtration device. The outlet of the first filtration device is connected to the inlet of a resin column, which is also connected to a descaling agent delivery pipeline. The outlet of the resin column's descaling liquid is connected to a neutralization vessel, and the outlet of the neutralization vessel is connected to a second filtration device. The outlet of the second filtration device is connected to the inlet of a hydrolysis vessel, which is connected to a purified water delivery pipeline. The outlet of the hydrolysis vessel is connected to a pH adjustment tank, and the outlet of the pH adjustment tank is connected to a third filtration device. The outlet of the third filtration device is connected to a decolorization vessel, the outlet of the decolorization vessel's decolorized liquid is connected to a concentration vessel, the outlet of the concentration vessel's concentrated liquid is connected to a crystallization vessel, the crystal outlet of the crystallization vessel is connected to a first drying device, and the outlet of the first drying device is connected to an inositol storage tank. The outlet of the third filtration device is connected to a second drying device, and the outlet of the second drying device is connected to a magnesium ammonium phosphate storage tank. In actual production, corn soaking water is pumped along the corn soaking water pipeline into a pH adjustment tank. The corn soaking water, adjusted to a suitable pH range, then enters the first filtration device. The collected filtrate then enters a resin column. Phytic acid is adsorbed and then desorbed using a desorption agent. The collected desorption liquid is pumped into a neutralization tank. After neutralization, the liquid enters the second filtration device. The collected magnesium phytate filter cake is conveyed into a hydrolysis tank, where water is added. After high-temperature and high-pressure hydrolysis, the hydrolysate is pumped into a pH adjustment tank, where ammonia and magnesium oxide are added to promote the formation of magnesium ammonium phosphate. This hydrolysate then enters the third filtration device. The collected filtrate enters a decolorization tank, which then enters a concentration tank. The concentrated liquid then enters a crystallization tank to obtain inositol crystals. The dried inositol product is stored in an inositol storage tank. The filter cake collected after filtration in the third filtration device is dried, and the resulting magnesium ammonium phosphate product is stored in a magnesium ammonium phosphate storage tank. The aforementioned production system recycles and reuses the water used to soak corn, resulting in high-yield, high-purity magnesium ammonium phosphate and inositol products, thus avoiding resource waste and increasing economic benefits for the company.

[0017] The pH adjustment tank consists of a tank body with a feed inlet on one side of the upper part, an acid inlet and a sampling port on the top, and a discharge port on one side of the lower part. A horizontal rotating shaft is installed inside the tank, with one end connected to a motor. Multiple annular agitators with stirring plates are mounted on the shaft. Corn soaking water containing suspended impurities enters the tank under the action of a pump, followed by the addition of acid. Once the motor starts, it drives the rotating shaft, the multiple annular agitators, and the stirring plates to mix the corn soaking water and acid to achieve a suitable pH (facilitating the subsequent adsorption of phytic acid by the resin column and preventing protein precipitation). The pH of the corn soaking water is then sampled and tested through the sampling port at the top.

[0018] Since the first, second, and third filtration devices are all plate and frame filters, the first filtration device can effectively separate the corn soaking water from suspended impurities; the second filtration device can separate the magnesium phytate filter cake from the filtrate; and the third filtration device can separate the magnesium ammonium phosphate filter cake from the inositol solution.

[0019] Because the resin column is an anion exchange resin column, the packing material inside the resin column can adsorb phytic acid, thereby separating phytic acid from impurity ions.

[0020] The neutralization vessel consists of a vessel body with a feed inlet and a magnesium oxide inlet at the top, and a discharge outlet at the bottom. The vessel body is externally jacketed, and internally houses a rotating shaft, a pH sensor, and a temperature sensor. One end of the rotating shaft is connected to a motor, and multiple perforated stirring plates are mounted on the shaft. The pH and temperature sensors are electrically connected to a controller. The eluent enters the vessel body under the action of a delivery pump, magnesium oxide is added, and the heat transfer medium in the jacket provides the temperature required for the neutralization reaction. After the motor starts, it drives the rotating shaft and multiple stirring plates to stir and mix the liquid, promoting the neutralization reaction. The temperature and pH sensors facilitate the detection of the temperature and pH of the liquid inside the vessel.

[0021] The hydrolysis reactor consists of a reactor body with a feed inlet and a purified water inlet at the top and a discharge outlet at the bottom. The reactor body is externally fitted with a jacket, and internally contains a rotating shaft, a pressure sensor, and a temperature sensor. One end of the rotating shaft is connected to a motor, and multiple stirring rods with stirring blades are mounted on the shaft. The pressure and temperature sensors are electrically connected to a controller. The magnesium phytate filter cake enters the reactor body via a conveyor belt, and purified water is added. The heat transfer medium in the jacket provides the necessary temperature for hydrolysis. Once the motor starts, it drives the rotating shaft and the multiple stirring rods and blades to mix the magnesium phytate filter cake and water, promoting the hydrolysis reaction. The pressure and temperature inside the hydrolysis reactor are monitored by the pressure and temperature sensors.

[0022] The pH adjusting vessel consists of a vessel body with a feed inlet, an ammonia inlet, and a magnesium oxide inlet at the top, and a discharge outlet at the bottom. The vessel body is jacketed, and inside is a rotating shaft and a pH sensor. One end of the rotating shaft is connected to a motor, and a cylindrical stirring frame with multiple stirring rods is mounted on the shaft. The pH sensor is electrically connected to a controller. The hydrolysate enters the vessel body under the action of a delivery pump. Ammonia is added to adjust the pH to alkalinity, and magnesium oxide is added to control the molar ratio of magnesium ions to phosphate ions. After the motor starts, it drives the rotating shaft, the cylindrical stirring frame, and the multiple stirring rods to rotate, thereby achieving mixing of the solution and facilitating the preparation of magnesium ammonium phosphate.

[0023] The decolorizing kettle comprises a kettle body with a liquid inlet at the top, a decolorizing agent outlet at the bottom, and a decolorizing liquid outlet on one side of the lower part of the kettle body. A filter screen is installed on the inner wall of the kettle body corresponding to the decolorizing liquid outlet. The kettle body has an outer jacket and an inner rotating shaft. One end of the rotating shaft is connected to a motor, and multiple perforated stirring blades are mounted on the shaft. Under the action of a delivery pump, the filtrate enters the kettle body. The heat transfer medium in the jacket provides the temperature required for decolorization. After the motor starts, it drives the rotating shaft and the multiple perforated stirring blades to rotate, ensuring full contact between the decolorizing agent (activated carbon) and the liquid, greatly improving the decolorization efficiency.

[0024] The concentration vessel includes a vessel body with a decolorizing liquid inlet at the top and a concentrate outlet at the bottom. The vessel body has an external jacket and an internal rotating shaft. One end of the shaft is connected to a motor, and a square stirring frame with multiple stirring rods is mounted on the shaft. Under the action of a delivery pump, the decolorizing liquid enters the concentrate, which is heated by a heat transfer medium in the jacket. Once the motor starts, it drives the rotating shaft, the square stirring frame, and the stirring rods to rotate, ensuring the decolorizing liquid is evenly heated and concentrated.

[0025] The crystallization vessel includes a vessel body with a feed inlet at the top and a crystal outlet at the bottom. A mother liquor outlet is located on one side of the lower part of the vessel body. A filter screen is installed on the inner wall of the vessel body corresponding to the mother liquor outlet. The vessel body has an outer jacket and an inner rotating shaft. One end of the shaft is connected to a motor, and multiple stirring rods with helical blades are mounted on the shaft. Under the action of a delivery pump, the concentrated liquid enters the crystallization vessel and is cooled by a refrigerant in the jacket. After the motor starts, it drives the rotating shaft, stirring rods, and helical blades to rotate, ensuring uniform cooling of the concentrated liquid and facilitating crystal formation. The mother liquor is pumped through the filter screen and discharged from the mother liquor outlet, while the crystals are discharged from the bottom crystal outlet. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the production system for preparing magnesium ammonium phosphate and inositol using corn soaking water according to this utility model;

[0027] Among them, 1-corn soaking water conveying pipeline, 2-pH adjustment tank, 3-first filtration device, 4-resin column, 5-extractant conveying pipeline, 6-neutralization vessel, 7-second filtration device, 8-hydrolysis vessel, 9-purified water conveying pipeline, 10-pH adjustment vessel, 11-third filtration device, 12-decolorization vessel, 13-concentration vessel, 14-crystallization vessel, 15-first drying device, 16-inositol storage tank, 17-second drying device, 18-magnesium ammonium phosphate storage tank. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0029] A production system for preparing magnesium ammonium phosphate and inositol using corn soaking water, such as Figure 1 As shown, the system includes a pH adjustment tank 2 connected to a corn soaking water conveying pipe 1. The outlet of the pH adjustment tank 2 is connected to a first filtration device 3 (plate and frame filter). The outlet of the first filtration device 3 is connected to the inlet of a resin column 4. The inlet of the resin column 4 is also connected to a desorption agent conveying pipe 5. The outlet of the desorption liquid from the resin column 4 is connected to a neutralization vessel 6. The outlet of the neutralization vessel 6 is connected to a second filtration device 7 (plate and frame filter). The outlet of the second filtration device 7 is connected to the inlet of a hydrolysis vessel 8. The inlet of the hydrolysis vessel 8 is connected to a purified water conveying pipe 9. The outlet of the hydrolysis vessel 8 is connected to a pH adjustment tank. The outlet of the pH adjustment vessel 10 is connected to the third filtration device 11 (plate and frame filter); the outlet of the third filtration device 11 is connected to the decolorization vessel 12; the outlet of the decolorization liquid of the decolorization vessel 12 is connected to the concentration vessel 13; the outlet of the concentration liquid of the concentration vessel 13 is connected to the crystallization vessel 14; the crystal outlet of the crystallization vessel 14 is connected to the first drying device 15 (double cone dryer); the outlet of the first drying device 15 is connected to the inositol storage tank 16; the outlet of the third filtration device 11 is connected to the second drying device 17 (double cone dryer); the outlet of the second drying device 17 is connected to the magnesium ammonium phosphate storage tank 18.

[0030] In actual production, corn soaking water is pumped along a pipeline into a pH adjustment tank. Once adjusted to a suitable pH range, the water then enters the first filtration device (effectively separating the soaking water from suspended impurities). The collected filtrate then enters a resin column, where phytic acid is adsorbed and then desorbed using a desorption agent. The collected desorption solution is then pumped into a neutralization tank. After neutralization, the solution enters the second filtration device (separating the magnesium phytate filter cake from the filtrate). The collected magnesium phytate filter cake is conveyed into a hydrolysis tank, where water is added. After high-temperature and high-pressure hydrolysis, the hydrolysate is pumped into a pH adjustment vessel where ammonia and magnesium oxide are added to promote the formation of magnesium ammonium phosphate. The hydrolysate then enters a third filtration unit (separating the magnesium ammonium phosphate filter cake from the inositol solution). The collected filtrate enters a decolorization vessel, which then enters a concentration vessel. The concentrated solution is then fed into a crystallization vessel to obtain inositol crystals. The dried inositol product is stored in an inositol storage tank. Similarly, the filter cake collected after filtration in the third filtration unit is dried to obtain magnesium ammonium phosphate, which is stored in a magnesium ammonium phosphate storage tank. This production system recycles the corn soaking water, resulting in high-yield, high-purity magnesium ammonium phosphate and inositol products, avoiding resource waste and increasing economic benefits for the enterprise.

[0031] The pH adjustment tank 2 includes a tank body with an inlet and an acid inlet on the upper side and an outlet on the lower side. A horizontal rotating shaft is installed inside the tank, with one end connected to a motor. Multiple annular agitators with stirring plates are mounted on the shaft. Corn soaking water containing suspended impurities enters the tank under the action of a pump, followed by the addition of acid. After the motor starts, it drives the rotating shaft, the multiple annular agitators, and the stirring plates to mix the corn soaking water and acid to achieve a suitable pH (facilitating the subsequent adsorption of phytic acid by the resin column and preventing protein precipitation). The pH of the corn soaking water is then sampled and tested from the top sampling port.

[0032] Resin column 4 is an anion exchange resin column. Phytic acid can be adsorbed through the packing material inside the resin column, thereby separating phytic acid from impurity ions.

[0033] The neutralization vessel 6 includes a vessel body with a feed inlet and a magnesium oxide inlet at the top and a discharge outlet at the bottom. The vessel body is fitted with a jacket, and inside is a rotating shaft, a pH sensor, and a temperature sensor. One end of the rotating shaft is connected to a motor, and multiple perforated stirring plates are mounted on the shaft. The pH and temperature sensors are electrically connected to a controller (located on one side of the top). The eluent enters the vessel body under the action of a delivery pump, magnesium oxide is added, and the heat transfer medium in the jacket provides the temperature required for the neutralization reaction. After the motor starts, it drives the rotating shaft and multiple stirring plates to stir and mix the liquid, promoting the neutralization reaction. The temperature and pH sensors facilitate the detection of the temperature and pH of the liquid inside the vessel.

[0034] The hydrolysis reactor 8 includes a reactor body with a feed inlet and a purified water inlet at the top and a discharge outlet at the bottom. The reactor body is fitted with a jacket, and inside the reactor body are a rotating shaft, a pressure sensor, and a temperature sensor. One end of the rotating shaft is connected to a motor, and multiple stirring rods with multiple stirring blades are mounted on the shaft. The pressure and temperature sensors are electrically connected to a controller (located on one side of the top). The magnesium phytate filter cake enters the reactor body via a conveyor belt, and purified water is added. The heat medium in the jacket provides the temperature required for hydrolysis. After the motor starts, it drives the rotating shaft and multiple stirring rods and blades to stir and mix the magnesium phytate filter cake and water, promoting the hydrolysis reaction. The pressure and temperature inside the hydrolysis reactor are detected by the pressure and temperature sensors.

[0035] The pH adjusting vessel 10 includes a vessel body with a feed inlet, an ammonia inlet, and a magnesium oxide inlet at the top, and a discharge outlet at the bottom. The vessel body is fitted with a jacket, and inside is a rotating shaft and a pH sensor. One end of the rotating shaft is connected to a motor, and a cylindrical stirring frame with multiple stirring rods is mounted on the shaft. The pH sensor is electrically connected to a controller (located on one side of the top). The hydrolysate enters the vessel body under the action of a delivery pump. Ammonia is added to adjust the pH to alkaline, and magnesium oxide is added to control the molar ratio of magnesium ions to phosphate ions. After the motor starts, it drives the rotating shaft, the cylindrical stirring frame, and the multiple stirring rods to rotate, thereby achieving stirring and mixing of the liquid, which is more conducive to the preparation of magnesium ammonium phosphate.

[0036] The decolorizing kettle 12 includes a kettle body with a liquid inlet at the top, a decolorizing agent outlet at the bottom, and a decolorizing liquid outlet on one side of the lower part of the kettle body. A filter screen is installed on the inner wall of the kettle body corresponding to the decolorizing liquid outlet. The kettle body has an outer jacket and an inner rotating shaft. One end of the rotating shaft is connected to a motor, and multiple perforated stirring blades are installed on the rotating shaft. Under the action of a delivery pump, the filtrate enters the kettle body. The heat medium in the jacket provides the temperature required for decolorization. After the motor starts, it drives the rotating shaft and the multiple perforated stirring blades to rotate, promoting full contact between the decolorizing agent (activated carbon) and the liquid, greatly improving the decolorization efficiency.

[0037] The concentration vessel 13 includes a vessel body with a decolorizing liquid inlet at the top and a concentrate outlet at the bottom. The vessel body is fitted with a jacket, and a rotating shaft is located inside. One end of the shaft is connected to a motor, and a square stirring frame with multiple stirring rods is mounted on the shaft. Under the action of a delivery pump, the decolorizing liquid enters the concentrate, which is heated by a heat transfer medium in the jacket. When the motor starts, it drives the rotating shaft, the square stirring frame, and the multiple stirring rods to rotate, ensuring uniform heating and concentration of the decolorizing liquid.

[0038] The crystallization vessel 14 includes a vessel body with a feed inlet at the top, a crystal outlet at the bottom, and a mother liquor outlet on one side of the lower part of the vessel. A filter screen is installed on the inner wall of the vessel corresponding to the mother liquor outlet. The vessel body has a jacket, and a rotating shaft is located inside. One end of the shaft is connected to a motor, and multiple stirring rods with helical blades are mounted on the shaft. Under the action of a pump, the concentrated liquid enters the crystallization vessel and is cooled by refrigerant in the jacket. After the motor starts, it drives the rotating shaft, stirring rods, and helical blades to rotate, ensuring uniform cooling of the concentrated liquid and facilitating crystal formation. The mother liquor is pumped through the filter screen and discharged from the mother liquor outlet, while the crystals are discharged from the bottom crystal outlet.

[0039] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A production system for preparing magnesium ammonium phosphate and inositol using corn soaking water, characterized in that, The pH adjusting tank is connected with the corn soaking water conveying pipeline, the outlet of the pH adjusting tank is connected with the inlet of the first filter device, the outlet of the first filter device is connected with the inlet of the resin column, the inlet of the resin column is also connected with the eluent pipeline, the outlet of the resin column is connected with the neutralization kettle, the outlet of the neutralization kettle is connected with the second filter device, the outlet of the second filter device is connected with the inlet of the hydrolysis kettle, the inlet of the hydrolysis kettle is connected with the purified water conveying pipeline, the outlet of the hydrolysis kettle is connected with the pH adjusting kettle, the outlet of the pH adjusting kettle is connected with the third filter device, the outlet of the third filter device is connected with the decolorization kettle, the outlet of the decolorization kettle is connected with the concentration kettle, the outlet of the concentration kettle is connected with the crystallization kettle, the outlet of the crystallization kettle is connected with the first drying device, the outlet of the first drying device is connected with the inositol storage tank, the outlet of the third filter device is connected with the second drying device, and the outlet of the second drying device is connected with the magnesium ammonium phosphate storage tank.

2. The production system for preparing magnesium ammonium phosphate and inositol using corn steep water according to claim 1, characterized by, The pH adjusting tank comprises a tank body, one side of the upper portion of the tank body is provided with an inlet, the top of the tank body is provided with an acid inlet and a sampling port, one side of the lower portion of the tank body is provided with an outlet, a rotating shaft is horizontally arranged in the tank body, one end of the rotating shaft is connected with a motor, and a plurality of annular stirring bodies are arranged on the rotating shaft and are provided with a plurality of stirring plates.

3. The production system for preparing magnesium-ammonium-phosphate and inositol using corn steep liquor according to claim 1, characterized by, The first filter device, the second filter device and the third filter device are all plate-and-frame filter machines.

4. The production system for preparing magnesium-ammonium-phosphate and inositol using corn steep liquor according to claim 1, characterized by, The resin column is a cation exchange resin column.

5. The production system for preparing magnesium ammonium phosphate and inositol using corn steep liquor according to claim 1, characterized by, The neutralization kettle comprises a kettle body, the top of the kettle body is provided with an inlet and a magnesium oxide inlet, the bottom of the kettle body is provided with an outlet, the outside of the kettle body is provided with a jacket, the inside of the kettle body is provided with a rotating shaft, a pH sensor and a temperature sensor, one end of the rotating shaft is connected with a motor, a plurality of hollow-structured stirring plates are arranged on the rotating shaft, and the pH sensor and the temperature sensor are electrically connected with a controller.

6. The production system for preparing magnesium-ammonium-phosphate and inositol using corn steep liquor according to claim 1, characterized by, The hydrolysis kettle comprises a kettle body, the top of the kettle body is provided with an inlet and a purified water inlet, the bottom of the kettle body is provided with an outlet, the outside of the kettle body is provided with a jacket, the inside of the kettle body is provided with a rotating shaft and a pressure sensor, one end of the rotating shaft is connected with a motor, a plurality of stirring rods are arranged on the rotating shaft and are provided with a plurality of stirring blades, and the pressure sensor and the temperature sensor are electrically connected with a controller.

7. The production system for preparing magnesium-ammonium-phosphate and inositol using corn steep liquor according to claim 1, characterized by, The pH adjusting kettle comprises a kettle body, the top of the kettle body is provided with an inlet, an ammonia water inlet and a magnesium oxide inlet, the bottom of the kettle body is provided with an outlet, and the outside of the kettle body is provided with a jacket; the inside of the kettle body is provided with a rotating shaft and a pH sensor, one end of the rotating shaft is connected with a motor, a cylindrical stirring frame is arranged on the rotating shaft, and a plurality of stirring rods are arranged on the stirring frame; and the pH sensor is electrically connected with a controller.

8. The production system for preparing magnesium-ammonium-phosphate and inositol using corn steep liquor according to claim 1, characterized by, The decoloring kettle comprises a kettle body, a liquid inlet is arranged at the top of the kettle body, a decoloring agent outlet is arranged at the bottom of the kettle body, a decoloring liquid outlet is arranged at one side of the lower part of the kettle body, a filter screen is arranged at the position corresponding to the decoloring liquid outlet on the inner wall of the kettle body; a jacket is arranged outside the kettle body, a rotating shaft is arranged inside the kettle body, one end of the rotating shaft is connected with a motor, and a plurality of stirring blades with hollow structures are arranged on the rotating shaft.

9. The production system for preparing magnesium-ammonium-phosphate and inositol using corn steep liquor according to claim 1, characterized by, The concentration kettle comprises a kettle body, a decoloring liquid inlet is arranged at the top of the kettle body, a concentrated liquid outlet is arranged at the bottom of the kettle body; a jacket is arranged outside the kettle body, a rotating shaft is arranged inside the kettle body, one end of the rotating shaft is connected with a motor, a square stirring frame is arranged on the rotating shaft, and a plurality of stirring rods are arranged on the square stirring frame.

10. The production system for preparing magnesium-ammonium-phosphate and inositol using corn steep liquor according to claim 1, characterized by, The crystallization kettle comprises a kettle body, a feed inlet is arranged at the top of the kettle body, a crystal outlet is arranged at the bottom of the kettle body, a crystallization mother liquor outlet is arranged at one side of the lower part of the kettle body, a filter screen is arranged at the position corresponding to the crystallization mother liquor outlet on the inner wall of the kettle body; a jacket is arranged outside the kettle body, a rotating shaft is arranged inside the kettle body, one end of the rotating shaft is connected with a motor, a plurality of stirring rods are arranged on the rotating shaft, and a plurality of spiral blades are arranged on the stirring rods.

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