Ultrasonic integrated preparation device for magnetic passivation material

Abstract

The invention relates to an ultrasonic integrated preparation device for a magnetic passivation material. The ultrasonic integrated preparation device comprises a feeding system, a magnetization reaction system, a magnetic separation washing system and a drying system, wherein the feeding system comprises a storage unit and a feeding pipeline; the magnetization reaction system is connected with the feeding system and comprises an ultrasonic generator, an ultrasonic probe, an electromagnetic heating device, an anaerobic reactor, a nitrogen tank, a temperature control system and a pH detection system; the magnetic separation washing system is connected with the magnetization reaction system and comprises a magnetic roller, a scraping device, a transmission device, a spraying device, a stirring device, a pH detection system, a waste liquid storage tank and a deionized water storage tank; the drying system is connected with the magnetic separation washing system and comprises a conveying device, a fan and an electromagnetic heating device. According to the invention, the anaerobic reactor and the magnetic roller which are automatically controlled are designed, so that the purposes of efficiently preparing the magnetic passivation material, reducing the preparation loss of the magnetic passivation material and automatically separating and washing are achieved.

Description

Technical Field

[0001] This invention patent belongs to the technical field of equipment related to the preparation of fly ash materials, and specifically relates to an ultrasonic integrated preparation device for magnetic passivation materials. Background Art

[0002] Although traditional passivation technologies can, to a certain extent, reduce the activity and mobility of pollutants, their high costs, high risks of secondary pollution, and unstable effects limit their wide application. In contrast, magnetic modified fly ash can improve the physical and chemical properties of fly ash, be rapidly separated by an external magnetic field, significantly enhance its adsorption performance and separation efficiency, and avoid secondary pollution at the same time, with higher environmental and economic benefits. In the future, magnetic modified fly ash is expected to play a greater role in the field of environmental governance.

[0003] The preparation of magnetic modified fly ash requires a series of operations including magnetization mixing reaction, magnetic separation washing, and drying. Its preparation methods mainly include co-precipitation method, chemical modification method, and physical modification method, each with its own advantages and disadvantages. The existing technology equipment has problems such as limited raw material sources, complex preparation processes, insufficient magnetic stability, easy secondary pollution, and limited application scope. For example, in the preparation of magnetic biochar materials proposed in invention patent CN 119386817 A, its method has high costs, poor magnetic stability, and is difficult to achieve large-scale production. To achieve low-cost and automated large-scale preparation of magnetic substances, while also obtaining magnetic substances with good stability, high purity, strong magnetism, and strong adsorption capacity. For this reason, we propose an ultrasonic integrated preparation device for magnetic passivation materials. Summary of the Invention

[0004] The problem to be solved by the present invention is to provide an ultrasonic integrated preparation device for magnetic passivation materials, and an anaerobic reactor and a magnetic drum with automatic control are designed to achieve the purpose of efficiently preparing magnetic passivation materials, reducing the preparation loss of magnetic passivation materials, and automatic separation and washing.

[0005] To achieve the above object, the present invention provides the following technical solution: Provide an ultrasonic integrated preparation device for magnetic passivation materials, characterized in that it includes a feeding system, a magnetization reaction system, a magnetic separation and washing system, and a drying system;

[0006] The feeding system includes a central control console, a storage unit, and a feeding pipeline;

[0007] The magnetization reaction system is connected to the feeding system and includes an ultrasonic generator, an ultrasonic probe, an electromagnetic heating device, an anaerobic reactor, a nitrogen tank, a temperature control system, and a pH detection system;

[0008] The magnetic separation and washing system is connected to the magnetization reaction system, and it includes a magnetic drum, a scraping device, a transmission device, a spraying device, a stirring device, a pH detection system, a strong magnetic field control system, a waste liquid storage tank, and a deionized water storage tank;

[0009] The drying system is connected to the magnetic separation and washing system, and it includes a transmission device, a blower, and an electromagnetic heating device;

[0010] In a preferred embodiment of the present invention, the material storage unit includes a fly ash providing unit, an iron salt providing unit, a ferrous salt providing unit, a distilled water providing unit, a complexing agent providing unit, a dispersant providing unit, and a precipitant providing unit;

[0011] In a preferred embodiment of the present invention, the feed pipeline includes a liquid conveying pipeline and a powder conveying pipeline;

[0012] The end of the powder conveying pipeline is connected to a powder conveying pump, and the lower discharge port of the powder conveying pump and the water outlet of the liquid conveying pipeline are both directly opposite the feed hopper of the anaerobic reactor.

[0013] In a preferred embodiment of the present invention, the anaerobic reactor includes an ultrasonic generator, an ultrasonic probe, an electromagnetic heating device, a nitrogen inlet, a feed inlet, a discharge outlet, an exhaust gas outlet, a temperature control system, and a pH detection system;

[0014] The anaerobic reactor is composed of a closed container, with an electromagnetic heating device embedded in the outer layer. There is a feed inlet and an ultrasonic probe at the upper end of the inner bladder, and a discharge outlet at the lower end, all equipped with valves to control the inlet and outlet;

[0015] The pH detection system is located below the ultrasonic probe, and it detects the pH of the solution in real time during the ultrasonic mixing stage and feeds it back to the central control console;

[0016] The temperature control system uses the electromagnetic heating device embedded in the outer layer of the anaerobic reactor to automatically control the temperature. There is an intelligent display screen and a switch of the temperature control system outside the reactor;

[0017] In a preferred embodiment of the present invention, the feed pipeline includes a powder conveying pipeline and a liquid conveying pipeline, both of which are controlled by valves and a conveying pump.

[0018] The feed pipeline is equipped with valves for control, and a powder conveying pump is set to connect the powder conveying pipeline and the feed inlet.

[0019] In a preferred embodiment of the present invention, the magnetic drum includes a scraping device, a transmission device, a spraying device, a stirring device, a pH detection system, a strong magnetic field control system, a waste liquid outlet, a water inlet, and a feed inlet.

[0020] The upper surface of the magnetic drum is provided with a spraying device and a stirring device, the side surface is provided with a strong magnetic control system, the inner wall is provided with a scraping device, and a conveying device is arranged at the bottom to transport materials. Feed pipes, waste liquid pipes and water inlet pipes are arranged at the upper end of the drum, and automatic telescopic devices are arranged on all of them.

[0021] The spraying device and the stirring device belong to an integrated device. The spraying device is located directly above the stirring device and is controlled by the same electric device. The lower part of the motor is connected with an automatic telescopic shell, which can control the up and down telescoping of the spraying device and the stirring device.

[0022] The strong magnetic control system is turned on during the separation and washing process to adsorb magnetic fly ash, and the system is turned off after the washing is completed.

[0023] The pH detection system is located at the lower end of the waste liquid pipe to detect the pH of the solution in real time and determine whether the separation and washing are completed.

[0024] In a preferred embodiment of the present invention, the drying system includes a drying device and a wind drying device.

[0025] The drying device and the wind drying device belong to an integrated device. An electromagnetic heating device is embedded in the outer layer, and a blower is embedded in the inner wall of the inner capsule. The blower is turned on in the early stage of drying to accelerate the separation of moisture, and the blower is turned off after the moisture is basically evaporated.

[0026] An ultrasonic integrated preparation device for a magnetic passivation material provided by the present invention can realize automatic and high-efficiency batch production of magnetic materials, and has the function of separating magnetic impurities, so that the prepared materials have both stability, magnetism and excellent adsorption performance.

[0027] Compared with the prior art, it has the following beneficial effects:

[0028] The present invention designs a feeding system. Each storage unit is independent, distinct and accurately placed. The solid materials are mixed with the liquid materials by a powder conveying pump and then enter the anaerobic separator, which has the advantages of strong controllability, strong operability and easy observation.

[0029] The present invention designs an anaerobic reactor. The ultrasonic probe inside the reactor is controlled by an ultrasonic generator to mix the materials of each unit entering. An electromagnetic coil is arranged on the inner wall for temperature control, and a pH detection system is arranged at the lower end of the ultrasonic probe to monitor the pH of the solution in real time. The mixing can be stopped after the pH of the solution reaches a certain value and is stable.

[0030] The present invention designs a magnetic drum. By integrating the spraying device and the stirring device, the loss of magnetic substances can be reduced, and sufficient washing can be realized. At the same time, a strong magnetic field control system and a pH detection system are set up, which can improve the separation efficiency of magnetic substances, monitor the pH of the solution in real time and control the washing process.

[0031] The ultrasonic integrated preparation device for a magnetic passivation material proposed by the present invention not only has high material preparation efficiency, low loss, and a wide application range, but also the magnetic substances prepared by this system have good stability, high purity, strong magnetism, and strong adsorption ability, and the system equipment has a simple structure and low operating cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is a plan view of an ultrasonic integrated preparation device for a magnetic passivation material;

[0033] Figure 2 is a three-dimensional perspective view of the anaerobic reactor of the present invention;

[0034] Figure 3 is a three-dimensional perspective view of the magnetic drum of the present invention;

[0035] DESCRIPTION OF THE REFERENCE NUMERALS

[0036] In the figures, 1, storage unit; 2, powder storage tank valve; 3, powder conveying pipeline; 4, powder conveying pump; 5, powder conveying pipeline valve; 6, liquid storage tank valve; 7, liquid conveying pipeline; 8, liquid conveying pipeline valve; 9, anaerobic reactor, 901, reactor feed inlet, 902, outlet gas valve, 903, outlet gas port, 904, pH detection system, 905, temperature control system, 906, ultrasonic generator, 907, ultrasonic probe, 908, nitrogen tank, 909, inlet gas port, 910, inlet gas valve, 911, electromagnetic heating device, 912, discharge port valve, 913, discharge port; 10, magnetic drum, 1001, magnetic drum feed pipeline, 1002, powder conveying pump, 1003, magnetic drum feed pipeline valve, 1004, stirring device, 1005, deionized water storage tank, 1006, water inlet pipeline valve, 1007, electric device, 1008, automatic telescopic shell, 1009, waste liquid conveying pump, 1010, waste liquid storage tank, 1011, waste liquid pipeline, 1012, waste liquid pipeline valve, 1013, pH detection system, 1014, spraying device, 1015, strong magnetic field control system, 1016, magnetic drum discharge pipeline valve, 1017, magnetic drum discharge pipeline; 11, electromagnetic heating device; 12, fan.

[0037] Next, the objects and technical solutions of the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. It should be noted that the following embodiments are used to illustrate the present invention, but are not used to limit the scope of the present invention.

[0038] Please refer to Figure 1 , the embodiments of the present invention include:

[0039] An ultrasonic integrated preparation device for a magnetic passivation material, comprising a feeding system I, a magnetization reaction system II, a magnetic separation and washing system III, and a drying system IV. The present invention designs an automated control anaerobic reactor and a magnetic drum to achieve the purposes of efficiently preparing the magnetic passivation material, reducing the preparation loss of the magnetic passivation material, and automatically separating and washing.

[0040] The feeding system includes a central control console, a material storage unit 1, and a feed pipeline. For powdery materials, a powder conveying pipeline 3 is provided, and a powder conveying pump 4 is arranged at the outlet of the pipeline. By opening the powder conveying pipeline valve 5 and the powder conveying pump 4, the dynamic pressure and static pressure of air are utilized to transport the material particles along the air flow direction in the closed pipeline; for liquid materials, a liquid conveying pipeline 7 is provided, and by opening the liquid conveying pipeline valve 8, the liquid will spontaneously transport along the pipeline under the action of gravity.

[0041] The magnetization reaction system includes an ultrasonic generator 906, an ultrasonic probe 907, an electromagnetic heating device 911, an anaerobic reactor 9, a nitrogen tank 908, a temperature control system 905, and a pH detection system 904. The nitrogen tank 908 is connected to the anaerobic reactor 9 through an air inlet 909. Further, combined Figure 2 , the anaerobic reactor 9 is composed of a closed container, with an electromagnetic heating device 911 embedded in the outer layer. There is a feed inlet 901 and an ultrasonic probe 907 at the upper end of the inner capsule, and a discharge outlet 913 at the lower end. The pH detection system 904 is located below the ultrasonic probe 907 to detect the pH of the solution in real time during the ultrasonic mixing stage and feedback it to the central control console. The temperature control system 905 uses the electromagnetic heating device 911 embedded in the outer layer of the anaerobic reactor 9 to automatically control the temperature. An intelligent display screen and a switch of the temperature control system 905 are provided outside the reactor, solving the problem that the traditional device needs to rely on the ambient temperature for temperature control, reducing the labor cost, and improving the preparation efficiency of magnetic substances.

[0042] The magnetic separation and washing system includes a magnetic drum 10, a scraping device, a transmission device, a spraying device 1014, a stirring device 1004, a pH detection system 1013, a strong magnetic field control system 1015, a waste liquid storage tank 1010, and a deionized water storage tank 1005. The deionized water storage tank 1005 is directly above the magnetic drum 10, and the waste liquid storage tank 1010 is connected to it through a waste liquid pipeline 1011 at the upper end of the magnetic drum 10. Further, combined Figure 3, the feeding pipeline 1001, the water inlet pipeline, and the waste liquid pipeline 1011 at the upper end of the magnetic drum 10 are all equipped with automatic telescopic shells 1007, which can be adjusted according to the water level rise and fall for convenient operation. The spraying device 1014 and the stirring device 1004 are integrated devices. The spraying device 1014 is located directly above the stirring device 1004 and is controlled by the same electric device 1007. The lower part of the motor is connected to the automatic telescopic shell 1008, which can control the up and down telescoping of the spraying device 1014 and the stirring device 1004 for stirring at different depths, so that the magnetic substances can be fully washed. The pH detection system 1013 is located at the lower end of the waste liquid pipeline 1011 to detect the pH of the solution in real time and determine whether the separation and washing are completed. The magnetic separation and washing system is connected to the drying system. There is a strong magnetic control system 1015 on the side surface of the magnetic drum 10. Under the action of magnetic force, the magnetic substances are adsorbed on the inner wall of the magnetic drum, and the scraping device collects the magnetic substances and transports them to the drying system through the transmission device.

[0043] The drying system includes a transmission device, a blower 12, and an electromagnetic heating device 11. The feed inlet of the drying system is connected to the discharge pipeline 1017 of the magnetic drum. Specific implementation method

[0044] The process of preparing the ash-based passivation material using fly ash as an example is as follows:

[0045] The fly ash (FA) is sieved through a 100 - 200 mesh sieve, placed in an oven and dried at 105 ± 5 °C for 2 h, taken out and cooled to room temperature, serving as the fly ash supply unit. Weigh a certain mass of FeSO4·7H2O and FeCl3·6H2O according to a molar ratio of 1:2, serving as the ferrous salt supply unit and the ferric salt supply unit respectively. Use deionized water as the distilled water supply unit, citric acid as the complexing agent supply unit, polyethylene glycol as the dispersant supply unit, and NaOH as the precipitant supply unit.

[0046] Open the powder feeding pipeline valve 5 and the liquid infusion pipeline valve 8, start the powder conveying pump 4, add a certain amount of fly ash, FeCl3·6H2O, deionized water, citric acid and polyethylene glycol into the anaerobic reactor 9, close the feed inlet 901 of the anaerobic reactor, and start the ultrasonic generator 906. After a period of time, open the air inlet 909 and the air outlet 903, introduce nitrogen, drive out the oxygen in the anaerobic reactor 9 for half an hour, and then close the air inlet 909 and the air outlet 903 to form an anaerobic environment. Control the addition of FeSO4·7H2O, start the ultrasonic generator 906 again, and carry out impregnation with the mixed solution containing iron salts and ferrous salts. After standing for 2 - 3 h, control the temperature at 70 °C through the temperature control system 905, turn on the ultrasonic generator 906, and add NaOH until the pH detection system 904 shows that the pH value is 13, then stop. Keep it static at a constant temperature for 2 h, and after adding the alkali solution, a precipitation reaction occurs to generate Fe3O4 and it is loaded in the fly ash particles. Open the discharge port valve 912, and the mixed solution enters the next processing device.

[0047] After the magnetization mixing reaction, open the magnetic drum feed pipe valve 1003 and the water inlet pipeline valve 1006, and the obtained magnetic substance enters the magnetic drum 10 under the action of the powder conveying pump 1002, and deionized water enters the magnetic drum 10 by gravity. Turn on the stirring device 1004 and the spraying device 1014, and adjust the heights of the stirring device 1004 and the spraying device 1014 through the automatic telescopic device according to the inflow of the mixed solution to achieve sufficient washing. At the same time, start the strong magnetic field control system 1015 to carry out magnetic separation on the mixed solution, and the magnetic substance is adsorbed on the inner wall of the magnetic drum 10 under the action of magnetic force. When the pH detection system 1013 at the lower end of the waste liquid pipeline 1011 shows that the pH of the solution is neutral, turn off the stirring device 1004, the spraying device 1014 and the strong magnetic field control system 1015. Open the waste liquid pipeline valve 1012 and the magnetic drum discharge pipeline valve 1016, use the waste liquid conveying pump 1009 to convey the waste liquid to the waste liquid storage tank 1010, collect the magnetic substance by using the scraping device, and then transport it to the next processing device through the transmission device.

[0048] After magnetic separation and washing, the wet magnetic substance is transported to the dryer under the action of the discharge conveying pump, start the electromagnetic heating device 11 and the fan 12, and dry it at 50 °C for 6 h to obtain the magnetic passivation material. It should be noted that the fan 12 is only turned on in the early stage of drying to accelerate the separation of moisture, and after the moisture is basically evaporated, turn off the fan 12.

[0049] In addition, it should be noted that the above only represents one implementation manner of the present application. The description is relatively clear and detailed, but it should not be construed as a limitation on the scope of the patent of the present application. It should be pointed out that any content that does not depart from the technical solution of the present invention, or any simple modification, equivalent change or modification made, all fall within the scope of the present invention.

Claims

1. An ultrasonic integrated preparation device for a magnetic passivation material, characterized in that It includes a feeding system, a magnetization reaction system, a magnetic separation and washing system, and a drying system; The feeding system includes a central control console, a material storage unit, and a feeding pipeline; The magnetization reaction system is connected to the feeding system and includes an ultrasonic generator, an ultrasonic probe, an electromagnetic heating device, an anaerobic reactor, a nitrogen tank, a temperature control system, and a pH detection system; The magnetic separation and washing system is connected to the magnetization reaction system and includes a magnetic drum, a scraping device, a transmission device, a spraying device, a stirring device, a pH detection system, a strong magnetic field control system, a waste liquid storage tank, and a deionized water storage tank; The drying system is connected to the magnetic separation and washing system and includes a transmission device, a blower, and an electromagnetic heating device.

2. The ultrasonic integrated preparation device for a magnetic passivation material according to claim 1, wherein, The material storage unit includes a fly ash providing unit, an iron salt providing unit, a ferrous salt providing unit, a distilled water providing unit, a complexing agent providing unit, a dispersant providing unit, and a precipitant providing unit.

3. The ultrasonic integrated preparation device for a magnetic passivation material according to claim 1, wherein, The feeding pipeline includes a liquid conveying pipeline and a powder conveying pipeline; The end of the powder conveying pipeline is connected to a powder conveying pump, and the lower discharge port of the powder conveying pump and the water outlet of the liquid conveying pipeline are both directly opposite the feeding funnel of the anaerobic reactor.

4. The ultrasonic integrated preparation device for a magnetic passivation material according to claim 1, characterized in that, The anaerobic reactor includes an ultrasonic generator, an ultrasonic probe, an electromagnetic heating device, a nitrogen inlet, a feed inlet, a discharge outlet, an exhaust gas outlet, a temperature control system, and a pH detection system; The anaerobic reactor is composed of a closed container, with an electromagnetic heating device embedded in the outer layer. There are a feed inlet and an ultrasonic probe at the upper end of the inner bag, and a discharge outlet at the lower end, all equipped with valves to control the inlet and outlet; The pH detection system is located below the ultrasonic probe and real-time detects the pH of the solution during the ultrasonic mixing stage and feeds it back to the central control console; The temperature control system uses the electromagnetic heating device embedded in the outer layer of the anaerobic reactor to automatically control the temperature. An intelligent display screen and a switch of the temperature control system are provided outside the reactor.

5. The ultrasonic integrated preparation device of a magnetic passivation material according to claim 1, characterized in that, The feeding pipeline includes a powder conveying pipeline and a liquid conveying pipeline, both of which are controlled by valves and a conveying pump; The feeding pipeline is equipped with valves for control, and a powder conveying pump is set to connect the powder conveying pipeline and the feed inlet.

6. The ultrasonic integrated preparation device for a magnetic passivation material according to claim 1, characterized in that, The magnetic drum includes a scraping device, a transmission device, a spraying device, a stirring device, a pH detection system, a strong magnetic field control system, a waste liquid outlet, a water inlet, and a feed inlet; There are a spraying device and a stirring device on the upper surface of the magnetic drum, a strong magnetic control system on the side surface, a scraping device on the inner wall, a transmission device is arranged at the bottom to transport materials, and a feeding pipeline, a waste liquid pipeline, and a water inlet pipeline are arranged at the upper end of the drum, and all are provided with automatic telescopic devices; The spraying device and the stirring device belong to an integrated device. The spraying device is located directly above the stirring device and is controlled by the same electric device. The lower part of the motor is connected to an automatic telescopic shell that can control the up and down telescoping of the spraying device and the stirring device; The strong magnetic field control system is turned on during the separation and washing process to adsorb magnetic fly ash, and the system is turned off after the washing is completed; The pH detection system is located at the lower end of the waste liquid pipeline and real-time detects the pH of the solution to determine whether the separation and washing are completed.

7. The ultrasonic integrated preparation device for a magnetic passivation material according to claim 1, wherein, The drying system includes a drying device and a wind drying device; The drying device and the air-drying device belong to an integrated device. An electromagnetic heating device is embedded in the outer layer, and a blower is embedded in the inner capsule wall. The blower is turned on in the early stage of drying to accelerate water separation, and the blower is turned off after the water is basically evaporated.

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