Magnesium perchlorate concentration device and production method thereof

Abstract

This invention discloses a magnesium perchlorate concentration apparatus and its production method, comprising a reaction tank 1 and a reaction tank 2, both having inlets; a perchloric acid solution storage tank is connected to the reaction tank 1 and the reaction tank 2 via a split-flow slow-drip pipeline; the reaction tank 1 and the reaction tank 2 are interconnected at the top via a switching pipeline controlled by a bidirectional pump to create a vacuum environment and exchange heat between the tanks; both the reaction tank 1 and the reaction tank 2 have outlets for discharging anhydrous magnesium perchlorate and outlet pipelines for discharging the solution at the bottom. The production method includes a split-flow slow-drip and dual-pipeline solution compensation method for producing concentrated magnesium perchlorate; and a method for concentrating magnesium perchlorate based on the split-flow slow-drip and dual-pipeline solution compensation method for producing concentrated magnesium perchlorate, performing vacuum exchange and heat exchange under the alternating action of the two tanks; thus improving the efficiency, stability, and continuity of magnesium perchlorate concentration production.

Description

Technical Field

[0001] This invention relates to a concentration apparatus and method, and more particularly to a magnesium perchlorate concentration apparatus and its production method. Background Technology

[0002] In industrial production, magnesium oxide is typically prepared through high-temperature reactions. For example, alumina and carbon powder react at high temperatures to produce magnesium oxide, which is then dissolved in 30% perchloric acid to produce magnesium perchlorate. The reaction process requires constant stirring, with magnesium oxide powder added slowly in multiple batches, and perchloric acid solution added dropwise. Once the solution becomes weakly acidic, the addition is stopped. Crystallization is then achieved by cooling the hot saturated solution. Heating is stopped when a thin crystalline film just appears on the liquid surface. Filtration yields hexahydrate magnesium perchlorate, which is then vacuum-heated to produce anhydrous magnesium perchlorate. This method of producing anhydrous magnesium perchlorate is difficult to implement continuously because the reaction process requires precise control and monitoring, including the stirring speed, the rate of addition of magnesium oxide powder and perchloric acid solution, etc. Continuous production also requires ensuring the stability and control of the crystal growth process to ensure that the resulting hexahydrate magnesium perchlorate crystals have a uniform structure and stable quality. Traditional processes require numerous downtime steps, making continuous production difficult. Therefore, under traditional processes, due to limitations in equipment and production methods, effective continuous production is difficult to achieve, lacking efficiency, stability, and continuity. Summary of the Invention

[0003] To address the shortcomings of the aforementioned technologies, this invention provides a magnesium perchlorate concentration apparatus and its production method.

[0004] To solve the above technical problems, the technical solution adopted by the present invention is: a magnesium perchlorate concentration device, including a reaction tank 1 and a reaction tank 2 arranged in parallel, and the upper part of both reaction tank 1 and reaction tank 2 has an addition port for adding magnesium oxide powder.

[0005] It also includes a perchloric acid solution storage tank, which is connected to reaction tank one and reaction tank two via a split slow drip pipeline;

[0006] The two reaction vessels are connected at the top via a switching pipeline controlled by a bidirectional pump to create a vacuum environment and exchange heat between the vessels.

[0007] Both reaction vessel one and reaction vessel two have an outlet for discharging anhydrous magnesium perchlorate and an outlet pipeline for discharging the solution at the bottom.

[0008] Furthermore, the diversion slow drip pipeline assembly includes a main pipeline connected to the perchloric acid solution storage tank, with two secondary pipelines branching off from the end of the main pipeline. The two secondary pipelines are connected in parallel through a compensation pipeline, and a valve is installed on the compensation pipeline. Each secondary pipeline is equipped with a first pump body, and a flow meter and a second valve are installed on the secondary pipelines corresponding to the connection between reaction tank one and reaction tank two. A third valve is installed on the main pipeline.

[0009] Furthermore, the main pipeline of the diversion slow drip pipeline group is located between reaction tank one and reaction tank two. The secondary pipelines are symmetrically arranged on the left and right sides along the axis of the main pipeline. The secondary pipelines connecting reaction tank one and reaction tank two are all arranged vertically and are all input from the upper end of reaction tank one and reaction tank two. The input path of perchloric acid solution from the perchloric acid solution storage tank to reaction tank one and reaction tank two is the same.

[0010] Furthermore, both reaction vessel one and reaction vessel two are equipped with a stirring motor at the top for stirring. The stirring motor extends downward into reaction vessel one or reaction vessel two through a stirring shaft, and stirring blades are connected to the lower part of reaction vessel one and reaction vessel two.

[0011] Furthermore, the conversion pipeline is horizontally connected between reaction tank one and reaction tank two, and the two ends of the conversion pipeline are connected to funnel-shaped collection ports that are inclined towards the bottom of the corresponding reaction tank one and reaction tank two.

[0012] Furthermore, the outlet for discharging anhydrous magnesium perchlorate is located at the bottom of reaction vessel one or reaction vessel two, and a collection cylinder is provided below the outlet of reaction vessel one or reaction vessel two.

[0013] Furthermore, the output pipeline is installed at the bottom of either reaction tank one or reaction tank two. The output pipelines of reaction tank one and reaction tank two are combined and connected to a collection tank. A valve number four is installed on the output pipeline.

[0014] Furthermore, the production method includes: a split-flow slow-drop and dual-pipeline solution compensation method for producing concentrated magnesium perchlorate solution; and a method for concentrating magnesium perchlorate by performing vacuum exchange and heat exchange under the alternating action of two tanks based on the split-flow slow-drop and dual-pipeline solution compensation method for producing concentrated magnesium perchlorate solution.

[0015] Furthermore, the method for split-flow slow-drop and dual-pipeline solution compensation for producing concentrated magnesium perchlorate solution is as follows:

[0016] Close valve 1 on the compensation pipeline, open valves 2 and 3, and start the first pump on the pipeline to draw perchloric acid solution from the perchloric acid solution storage tank through the main pipeline and then split into two streams to input into reaction tank 1 and reaction tank 2. Adjust the flow rate of the two streams of perchloric acid solution according to the flow meter to ensure that the input perchloric acid solution volume of reaction tank 1 and reaction tank 2 is the same. When it is necessary to control the input of perchloric acid solution volume of reaction tank 1 or reaction tank 2, open / close valve 2 on the corresponding stream connected to reaction tank 1 or reaction tank 2 to achieve the split and slow drip of perchloric acid solution.

[0017] When the first pump on one of the feed lines malfunctions or requires maintenance, keep valves 2 and 3 open, and open valve 1 on the compensation line. The first pump on the other feed line will then draw perchloric acid solution from the perchloric acid solution storage tank through the main pipeline, feed line, and compensation line, splitting it into two streams that are fed into reaction tank 1 and reaction tank 2, thus achieving dual-pipeline solution compensation for perchloric acid.

[0018] Furthermore, the method for concentrating magnesium perchlorate based on the split-flow slow-drop and dual-pipeline solution compensation method for producing concentrated magnesium perchlorate solution, involving vacuum exchange and heat exchange under alternating action of two tanks, is as follows:

[0019] Open valve number 2 on the pipeline connected to reaction vessel 1, slowly add perchloric acid solution, and add magnesium oxide powder to reaction vessel 1 to allow the reaction process to begin preferentially in reaction vessel 1. Stir continuously to make the solution weakly acidic and generate hot gas. Close valve number 2 on the pipeline connected to reaction vessel 1, and turn on the bidirectional pump to gradually pump the hot gas from reaction vessel 1 to reaction vessel 2 to cool the hot saturated solution in reaction vessel 1 and form crystals. At the same time, open valve number 4 on the output pipeline of reaction vessel 1 to filter out the cooled hot saturated solution and obtain magnesium perchlorate hexahydrate. Magnesium perchlorate hexahydrate is then converted into anhydrous magnesium perchlorate under the gradually formed vacuum environment and discharged through the output port. It then enters the next concentration reaction in reaction vessel 1.

[0020] Then, valve number two on the pipeline connected to reaction vessel two is opened, and perchloric acid solution is slowly added dropwise. Magnesium oxide powder is added to reaction vessel one, allowing the reaction process to begin in reaction vessel two. The solution is continuously stirred to make it weakly acidic, and hot gas from reaction vessels one and two is collected. After the reaction is completed, valve number two on the pipeline connected to reaction vessel two is closed, and a bidirectional pump is turned on to gradually pump hot gas from reaction vessel two to reaction vessel one, cooling the hot saturated solution in reaction vessel two and forming crystals. At the same time, valve number four on the output pipeline of reaction vessel two is opened to filter out the cooled hot saturated solution, obtaining magnesium perchlorate hexahydrate. Magnesium perchlorate hexahydrate is then converted into anhydrous magnesium perchlorate under a gradually forming vacuum environment, and then enters the next concentration reaction in reaction vessel two.

[0021] Reactor 1 and Reactor 2 operate alternately in a cycle.

[0022] This invention discloses a magnesium perchlorate concentration device and its production method. It utilizes a split-flow slow-drip pipeline system to indicate and regulate the flow rates of two perchloric acid solutions, ensuring that the input perchloric acid solution volume in reaction tank one and reaction tank two is the same, achieving precise alternating control of the production process. When the first pump on one of the pipelines malfunctions or requires maintenance, the perchloric acid solution can be compensated through the other pipeline, ensuring continuous production is not interrupted by a single equipment failure. Furthermore, by utilizing the alternating action of the two tanks, one tank can perform the reaction process while the other cools and crystallizes, enabling continuous reaction and effectively reducing the impact of downtime. This optimizes the production process, making it more suitable for continuous production, reducing bottlenecks and downtime points, thereby improving production efficiency, stability, and continuity. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the present invention.

[0024] Figure 2 This is a schematic diagram of the internal structure of reaction vessel one or reaction vessel two of the present invention.

[0025] In the diagram: 1. Reaction tank one; 2. Reaction tank two; 3. Addition port; 4. Perchloric acid solution storage tank; 5. Two-way pump; 6. Switching pipeline; 7. Output port; 8. Output pipeline; 9. Main pipeline; 10. Subsequent pipeline; 11. Compensation pipeline; 12. Valve No. 1; 13. First pump body; 14. Flow meter; 15. Valve No. 2; 16. Valve No. 3; 17. Stirring motor; 18. Stirring shaft; 19. Stirring blades; 20. Collection cylinder; 21. Liquid collection tank; 22. Valve No. 4; 23. Trumpet-shaped collection port. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0027] like Figure 1 and Figure 2 As shown, the magnesium perchlorate concentration device includes a reaction vessel 1 and a reaction vessel 2 arranged in parallel. The upper part of both reaction vessel 1 and reaction vessel 2 has an addition port 3 for adding magnesium oxide powder, and the addition port 3 is normally closed.

[0028] It also includes a perchloric acid solution storage tank 4, which is connected to reaction tank 1 and reaction tank 2 via a split drip pipeline. The split drip pipeline includes a main pipeline 9 connected to the perchloric acid solution storage tank 4. Two secondary pipelines 10 branch off from the end of the main pipeline 9. The two secondary pipelines 10 are connected in parallel via a compensation pipeline 11, and a first valve 12 is installed on the compensation pipeline 11. A first pump body 13 is installed on each secondary pipeline 10. A flow meter 14 and a second valve 15 are installed on the secondary pipelines 10 that connect reaction tank 1 and reaction tank 2 respectively. A third valve 16 is installed on the main pipeline 9. In terms of location, the main pipeline 9 is positioned between reaction tank 1 and reaction tank 2. Sub-pipelines 10 are symmetrically arranged along the axis of main pipeline 9. Sub-pipelines 10 connecting reaction tank 1 and reaction tank 2 are all vertically arranged and input from the upper ends of reaction tank 1 and reaction tank 2. The perchloric acid solution in the perchloric acid solution storage tank 4 has the same input path to reaction tank 1 and reaction tank 2, ensuring that the path length of the perchloric acid solution from the storage tank into the two reaction tanks is equal and the flow resistance is similar. This results in a uniform flow rate of perchloric acid solution in the two reaction tanks, avoiding differences in concentration effect caused by uneven flow. The symmetrical arrangement of the pipelines ensures a more consistent treatment effect of concentrated magnesium perchlorate in the two reaction tanks under the alternating action of the two tanks, which is beneficial to ensuring the stable operation and efficient production of the concentration unit.

[0029] Both reaction vessel 1 and reaction vessel 2 are equipped with a stirring motor 17 at the top for stirring. The stirring motor 17 extends downward into reaction vessel 1 or reaction vessel 2 via a stirring shaft 18, and stirring blades 19 are connected to the lower part of reaction vessel 1 and reaction vessel 2. This ensures that the solutions in reaction vessel 1 and reaction vessel 2 are thoroughly mixed and uniformly stirred. The downward extension of the stirring motor and the connection to the stirring blades allow the stirring blades to fully mix the solutions and keep them in suspension, ensuring uniform contact and reaction of the reactants. This is crucial for ensuring the uniformity and efficiency of the reaction during the concentration of magnesium perchlorate, and helps to improve the reaction efficiency and product quality in the production process.

[0030] Reactor 1 and Reactor 2 are interconnected at the top via a switching pipeline 6 controlled by a bidirectional pump 5 to create a vacuum environment and facilitate heat exchange between the two vessels. The switching pipeline 6 connects Reactor 1 and Reactor 2 horizontally, with each end of the pipeline connected to a flared collection port 23 inclined towards the bottom of the corresponding Reactor 1 and Reactor 2. The flared collection port allows for direct intake or exhaust of gas under vacuum conditions, ensuring effective gas removal when a vacuum is created inside the reactor. Simultaneously, the liquid within the reactor can flow and be collected smoothly during heat exchange, ensuring safer and more efficient operation during heat exchange between the reactors.

[0031] Both reaction vessel 1 and reaction vessel 2 have an outlet 7 for discharging anhydrous magnesium perchlorate and an outlet pipe 8 for discharging the solution at their lower parts. The outlet 7 for discharging anhydrous magnesium perchlorate is located at the bottom of reaction vessel 1 or reaction vessel 2, and a collection cylinder 20 is provided below the outlet 7 of each reaction vessel 1 or reaction vessel 2. The outlet pipe 8 is installed at the bottom of reaction vessel 1 or reaction vessel 2, and the outlet pipes 8 of reaction vessel 1 and reaction vessel 2 are combined and connected to a collection tank 21. A fourth valve 22 is provided on the outlet pipe 8.

[0032] The control process for valves and pumps described above is achieved through an automated control system, such as a PLC (Programmable Logic Controller) or a DCS (Distributed Control System). Parameters from real-time monitoring systems, such as flow meters, are fed back to the control system. Based on preset control logic and set parameters, the control system performs actions such as opening, closing, and adjusting the valves and pumps, thereby controlling and regulating the concentration unit. This method enables automated control of the entire production process. This automated control technology, already in use, aims to improve production efficiency, ensure product quality, and reduce the risks associated with human error.

[0033] In summary, this invention also discloses a method for producing magnesium perchlorate concentrate using a magnesium perchlorate concentration apparatus. The method includes: a diversion and slow dripping method and a dual-pipeline solution compensation method for producing concentrated magnesium perchlorate; and a method for concentrating magnesium perchlorate by performing vacuum exchange and heat exchange under the alternating action of two tanks based on the diversion and slow dripping method and the dual-pipeline solution compensation method for producing concentrated magnesium perchlorate.

[0034] The split-flow slow-drop and dual-pipeline solution compensation method used for producing concentrated magnesium perchlorate solution is as follows:

[0035] Close valve 12 on compensation pipeline 11, open valve 15 and valve 16, start the first pump body 13 on pipeline 10 to pump perchloric acid solution from the perchloric acid solution storage tank through main pipeline 9 and branch pipeline 10 into two streams to reaction tank 1 and reaction tank 2. Adjust the flow rate of the two streams of perchloric acid solution according to the indication of flow meter 14 to ensure that the amount of perchloric acid solution input to reaction tank 1 and reaction tank 2 is the same. When it is necessary to control the amount of perchloric acid solution input to reaction tank 1 or reaction tank 2, open / close valve 15 on the corresponding branch pipeline 10 connected to reaction tank 1 or reaction tank 2 to achieve the split and slow drip of perchloric acid solution.

[0036] When the first pump 13 on one of the pipelines 10 malfunctions or requires maintenance, valves 15 and 16 remain open, and valve 12 on the compensation pipeline 11 is opened. Another pump 13 on the pipeline 10 draws perchloric acid solution from the perchloric acid solution storage tank through the main pipeline 9, then through the pipeline 10 and the compensation pipeline 11, splitting it into two streams that are fed into reaction tank 1 and reaction tank 2, thus achieving dual-pipeline solution compensation for perchloric acid solution.

[0037] Among them, the method for concentrating magnesium perchlorate based on the split-flow slow dripping and dual-pipeline solution compensation method for producing concentrated magnesium perchlorate, using vacuum exchange and heat exchange under the alternating action of two tanks, is as follows:

[0038] Open valve 15 on pipe 10 connected to reaction vessel 1, slowly add perchloric acid solution, and add magnesium oxide powder to reaction vessel 1 to allow the reaction process to proceed preferentially. Stir continuously to make the solution weakly acidic and generate hot gas. Close valve 15 on pipe 10 connected to reaction vessel 1, and turn on bidirectional pump 5 to gradually pump the hot gas from reaction vessel 1 to reaction vessel 2 to cool the hot saturated solution in reaction vessel 1 and form crystals. At the same time, open valve 22 on output pipe 8 of reaction vessel 1 to filter out the cooled hot saturated solution and obtain magnesium perchlorate hexahydrate. Magnesium perchlorate hexahydrate is then converted into anhydrous magnesium perchlorate under the gradually formed vacuum environment and discharged through output port 7. After that, it enters the next concentration reaction in reaction vessel 1.

[0039] Then, valve 15 on the conduit 10 connected to reaction vessel 2 is opened, and perchloric acid solution is slowly added dropwise. Magnesium oxide powder is added to reaction vessel 1, allowing the reaction process to begin in reaction vessel 2. The solution is continuously stirred to make it weakly acidic, and hot gas from reaction vessel 1 and reaction vessel 2 is collected. After the reaction is completed, valve 15 on the conduit 10 connected to reaction vessel 2 is closed, and the bidirectional pump 5 is turned on to gradually pump hot gas from reaction vessel 2 to reaction vessel 1, cooling the hot saturated solution in reaction vessel 2 and forming crystals. At the same time, valve 22 on the output conduit 8 of reaction vessel 2 is opened to filter out the cooled hot saturated solution, obtaining magnesium perchlorate hexahydrate. Magnesium perchlorate hexahydrate is then converted into anhydrous magnesium perchlorate under a gradually forming vacuum environment, and then enters the next concentration reaction in reaction vessel 2. Reaction vessels 1 and 2 alternate in operation. The advantage of alternating operation between reaction tank one and reaction tank two is that it enables continuous production. This alternation saves time and costs while maximizing equipment utilization and improving production efficiency. While one reaction tank is undergoing a reaction, the other can cool and crystallize, ensuring each tank operates under relatively stable conditions. This allows for fuller utilization of the production line equipment and increases equipment efficiency. The alternating operation also results in a more balanced production load, reducing sudden production spikes and promoting a smoother overall production process. In conclusion, alternating operation between reaction tank one and reaction tank two effectively improves production efficiency, stability, and continuity.

[0040] The above embodiments are not intended to limit the present invention, and the present invention is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the technical solution of the present invention are also within the protection scope of the present invention.

Claims

1. A magnesium perchlorate concentration device, characterized by: It comprises reaction tank one (1) and reaction tank two (2) arranged side by side, the upper part of reaction tank one (1) and reaction tank two (2) has adding port (3) for adding magnesium oxide powder; It also comprises perchloric acid solution storage tank (4), the two-way distribution and slow dripping pipe group divides the perchloric acid solution storage tank (4) into two paths and then connects reaction tank one (1) and reaction tank two (2) correspondingly; The upper part of the reaction tank one (1) and reaction tank two (2) is connected by the conversion pipe (6) under the control of the two-way pump (5) to realize the creation of vacuum environment and heat exchange between the tanks. The lower part of the reaction tank one (1) and reaction tank two (2) has output port (7) for discharging anhydrous magnesium perchlorate and output pipe (8) for discharging solution. The two-way distribution and slow dripping pipe group comprises main pipe (9) connected to the perchloric acid solution storage tank (4), two paths of branch pipes (10) branched from the end of the main pipe (9), the two paths of branch pipes (10) are connected in parallel through compensation pipe (11) and a valve (12) is arranged on the compensation pipe (11), first pump body (13) is arranged on each branch pipe (10), flow meter (14) and second valve (15) are arranged on the branch pipes (10) connected to reaction tank one (1) and reaction tank two (2) correspondingly, and third valve (16) is arranged on the main pipe (9).

2. The magnesium perchlorate concentration device of claim 1, wherein: The main pipe (9) of the two-way distribution and slow dripping pipe group is arranged between reaction tank one (1) and reaction tank two (2), the branch pipes (10) are arranged symmetrically along the axis of the main pipe (9), the branch pipes (10) connected to reaction tank one (1) and reaction tank two (2) correspondingly are arranged vertically and input from the upper end of reaction tank one (1) and reaction tank two (2), and the input paths of the perchloric acid solution in the perchloric acid solution storage tank (4) to reaction tank one (1) and reaction tank two (2) are the same.

3. The magnesium perchlorate concentration device of claim 2, wherein: The reaction tank one (1) and reaction tank two (2) are provided with stirring motor (17) at the top for stirring, the stirring motor (17) extends into reaction tank one (1) or reaction tank two (2) through stirring shaft (18) downwardly, and stirring blade (19) is connected to the lower part of reaction tank one (1) and reaction tank two (2).

4. The magnesium perchlorate concentration device of claim 2, wherein: The conversion pipe (6) is connected between reaction tank one (1) and reaction tank two (2) in horizontal direction, the two ends of the conversion pipe (6) are connected with horn-shaped collecting port (23) arranged obliquely to the bottom of the tank body in the tank body of reaction tank one (1) and reaction tank two (2) correspondingly.

5. The magnesium perchlorate concentration device of claim 2, wherein: The output port (7) for discharging anhydrous magnesium perchlorate is arranged at the bottom end of reaction tank one (1) or reaction tank two (2), and collecting cylinder (20) is arranged below the output port (7) of reaction tank one (1) or reaction tank two (2).

6. The magnesium perchlorate concentration device of claim 2, wherein: The output pipe (8) is arranged at the lower part of reaction tank one (1) or reaction tank two (2), and the output pipes (8) of reaction tank one (1) and reaction tank two (2) are connected to liquid collecting tank (21) outside after being combined, and fourth valve (22) is arranged on the output pipe (8).

7. The method of producing a magnesium perchlorate concentration device according to any one of claims 1 to 6, characterized by, The production method comprises a split slow drop and double pipeline solution compensation method for producing a perchloric acid solution of concentrated magnesium perchlorate, and a concentrated magnesium perchlorate method based on vacuum exchange and heat exchange under double-tank alternation of the split slow drop and double pipeline solution compensation method for producing a perchloric acid solution of concentrated magnesium perchlorate.

8. The method of producing a magnesium perchlorate concentration device according to claim 7, characterized by, The split slow drop and double pipeline solution compensation method for producing a perchloric acid solution of concentrated magnesium perchlorate is: Close the first valve (12) on the compensation pipeline (11), open the second valve (15) and the third valve (16), and start the first pump body (13) on the pipeline (10) to input the perchloric acid solution from the perchloric acid solution storage tank through the main pipeline (9) into the reaction tank one (1) and the reaction tank two (2) through the split pipeline (10), and adjust the flow of the two routes of the perchloric acid solution through the flow meter (14) to ensure that the input amount of the perchloric acid solution in the reaction tank one (1) and the reaction tank two (2) is the same, and when it is necessary to control the input of the amount of the perchloric acid solution in the reaction tank one (1) or the reaction tank two (2), open / close the second valve (15) connected to the split pipeline (10) of the reaction tank one (1) or the reaction tank two (2) to realize the slow drop of the perchloric acid solution; When the first pump body (13) on a certain split pipeline (10) fails or needs to be maintained, keep the second valve (15) and the third valve (16) open, and open the first valve (12) on the compensation pipeline (11), and the first pump body (13) on the other split pipeline (10) inputs the perchloric acid solution from the perchloric acid solution storage tank through the main pipeline (9) into the reaction tank one (1) and the reaction tank two (2) through the split pipeline (10) and the compensation pipeline (11) in turn to realize the double pipeline solution compensation of the perchloric acid solution.

9. The method of producing a magnesium perchlorate concentration device according to claim 8, characterized by, The concentrated magnesium perchlorate method based on vacuum exchange and heat exchange under double-tank alternation of the split slow drop and double pipeline solution compensation method for producing a perchloric acid solution of concentrated magnesium perchlorate is: Open the second valve (15) connected to the split pipeline (10) of the reaction tank one (1), slowly drop the perchloric acid solution, and add magnesium oxide powder in the reaction tank one (1) to make the reaction tank one (1) enter the reaction process preferentially, continuously stir the solution to be weakly acidic, and gather hot gas, close the second valve (15) connected to the split pipeline (10) of the reaction tank one (1), open the bidirectional pump (5) to gradually pump the hot gas from the reaction tank one (1) into the reaction tank two (2), cool the hot saturated solution in the reaction tank one (1) and form crystals, at the same time, open the fourth valve (22) on the output pipeline (8) of the reaction tank one (1) to filter out the cooled hot saturated solution to obtain magnesium perchlorate hexahydrate, and the magnesium perchlorate hexahydrate is used to prepare anhydrous magnesium perchlorate under the gradually formed vacuum environment, and then discharged through the output port (7) and then enters the next concentration reaction in the reaction tank one (1); Subsequently, open the second valve (15) connected to the pipeline (10) of the second reaction tank (2), slowly drop the perchloric acid solution, and add magnesium oxide powder in the second reaction tank (2), so that the second reaction tank (2) enters the subsequent reaction process, continuously stir the solution to be weakly acidic, and collect the hot gas from the first reaction tank (1) and the second reaction tank (2). After the reaction is completed, close the second valve (15) connected to the pipeline (10) of the second reaction tank (2), open the two-way pump (5) to gradually pump the hot gas from the second reaction tank (2) into the first reaction tank (1), cool the hot saturated solution in the second reaction tank (2) and form crystals, and at the same time open the fourth valve (22) of the output pipeline (8) of the second reaction tank (2) to filter out the cooled hot saturated solution to obtain magnesium perchlorate hexahydrate. The magnesium perchlorate hexahydrate is prepared into anhydrous magnesium perchlorate under the gradually formed vacuum environment, and then enters the next concentration reaction of the second reaction tank (2); The first reaction tank (1) and the second reaction tank (2) are cyclically and alternately acted.

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