Iron phosphate reaction device and system

Abstract

The utility model discloses a ferric phosphate reaction device and system, the reaction device comprises a pipe body and at least two filling mechanisms, the pipe body comprises an inner pipe and a jacket, a reaction cavity is formed in the inner pipe, a liquid inlet and a liquid outlet are respectively formed at two ends of the inner pipe, the jacket is arranged outside the inner pipe in a wrapping manner, and the filling mechanisms are arranged on the jacket. A heat preservation cavity is formed between the inner side wall of the clamping sleeve and the outer side wall of the inner pipe, and a water inlet and a water outlet which are both communicated with the heat preservation cavity are formed in the clamping sleeve. The device has the beneficial effects that hydrogen peroxide is added in multiple sections from the side of the pipe body, and the hydrogen peroxide in each section is added in multiple strands, so that the situation that the local concentration of the hydrogen peroxide is too high can be effectively prevented, and hot water or steam is added into the heat preservation cavity through the water inlet to serve as a heating medium in the iron phosphate synthesis reaction process; the reaction temperature in the reaction cavity is maintained at 50-96 DEG C, and the reaction rate is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of iron phosphate production, in particular to an iron phosphate reaction device and system. Background Art

[0002] Lithium iron phosphate has the advantages of low cost, high safety performance, and good cycle stability. It is currently the cathode material with the highest market share. Iron phosphate is the main precursor for the production of lithium iron phosphate cathode materials. It is generally synthesized by intermittent reaction. The production process is relatively complicated and cannot be fully automated. It has the defects of high energy consumption and large investment. With the increase in the production capacity of a single set of newly built iron phosphate equipment, the volume of the reactor has also increased rapidly, which has a great impact on the batch stability of iron phosphate production, reduces the consistency of downstream lithium iron phosphate materials, and directly affects the safety and cycle performance of the battery. In addition, with the gradual promotion of higher-density lithium iron phosphate technology in the future, more stringent requirements are placed on the stability of iron phosphate precursors, and the route of synthesizing iron phosphate by intermittent reaction can no longer meet future market demand.

[0003] In this context, the development of a continuous synthesis process of iron phosphate is of great significance to reducing equipment investment and ensuring the stability of product batches. In the process of adding hydrogen peroxide to the reactor, the existing continuous iron phosphate reaction system (such as an iron phosphate parallel production system disclosed in application No. 202321442437.1) is prone to excessive local concentration of hydrogen peroxide. In addition, during the iron phosphate synthesis reaction, the temperature of the solution cannot be maintained within a relatively stable range, and the reaction rate is low. Utility Model Content

[0004] The purpose of the utility model is to overcome the above technical deficiencies, and to provide an iron phosphate reaction device and system, so as to solve the technical problems in the prior art that in the process of adding hydrogen peroxide into the reactor, the local concentration of hydrogen peroxide is easily too high, and in addition, in the process of the iron phosphate synthesis reaction, the temperature of the solution cannot be maintained within a relatively stable range, resulting in a low reaction rate.

[0005] In order to achieve the above technical purpose, the technical solution of the utility model provides an iron phosphate reaction device, comprising:

[0006] A tube body, comprising an inner tube and a jacket, wherein a reaction chamber is formed in the inner tube, a liquid inlet and a liquid outlet are formed at two ends of the inner tube respectively, the jacket is arranged to cover the outside of the inner tube, a heat preservation chamber is formed between the inner side wall of the jacket and the outer side wall of the inner tube, and a water inlet and a water outlet are provided on the jacket, both of which are connected to the heat preservation chamber;

[0007] At least two filling mechanisms are arranged at intervals along the length direction of the tube body, and include a plurality of filling pipes which are arranged circumferentially on the sides of the tube body, and one end of each of the filling pipes is connected to the reaction chamber.

[0008] Furthermore, each of the filling mechanisms is close to the liquid inlet.

[0009] Furthermore, the water inlet is close to the liquid outlet, and the water outlet is close to the liquid inlet.

[0010] Furthermore, the tube body also includes a bent tube, one end of which is connected to the liquid outlet.

[0011] Furthermore, the ferric phosphate reaction device also includes a stirring mechanism, which includes a rotating shaft, propeller blades and a rotating drive component. The rotating shaft is arranged along the length direction of the inner tube, one end of the rotating shaft is located in the reaction chamber, and the other end of the rotating shaft rotates through the bent pipe and extends to the outside of the bent pipe. The propeller blades are arranged in the reaction chamber and are wound around the rotating shaft. The rotating drive component is fixedly connected to the other end of the rotating shaft for driving the rotating shaft to rotate.

[0012] Furthermore, the ferric phosphate reaction device also includes a sealing mechanism, and the sealing mechanism is arranged at the junction of the rotating shaft and the bent pipe.

[0013] On the other hand, the utility model also provides an iron phosphate reaction system, comprising at least two of the above-mentioned iron phosphate reaction devices, a liquid inlet pipeline, a liquid outlet pipeline, a filling pipeline and a water inlet pipeline, wherein the tube bodies are arranged side by side, the outlet end of the liquid inlet pipeline is connected to each of the liquid inlets, the inlet end of the liquid outlet pipeline is connected to each of the liquid outlets, the outlet end of the filling pipeline is connected to the other end of each of the filling pipes, and the outlet end of the water inlet pipeline is connected to each of the water inlets.

[0014] Furthermore, the liquid inlet pipeline includes a liquid inlet main pipe, at least two liquid inlet branch pipes, at least two liquid inlet valves, at least two first regulating valves and at least two first flow meters. One end of each of the liquid inlet branch pipes is connected to the liquid inlet main pipe, and the other end of each of the liquid inlet branch pipes is connected to the corresponding liquid inlet port. Each of the liquid inlet valves is respectively arranged on the corresponding liquid inlet branch pipe and located at the upstream section of the liquid inlet branch pipe so that the liquid inlet branch pipe is in a flow or cutoff state. Each of the first regulating valves is respectively arranged on the corresponding liquid inlet branch pipe and located at the downstream section of the liquid inlet branch pipe. Each of the first flow meters is respectively arranged on the corresponding liquid inlet branch pipe and located at the downstream section of the liquid inlet branch pipe.

[0015] Furthermore, the liquid outlet pipeline includes a liquid outlet main pipe, at least two liquid outlet branch pipes and at least two liquid outlet valves, one end of each of the liquid outlet branch pipes is connected to the liquid outlet main pipe, and the other end of each of the liquid outlet branch pipes is connected to the corresponding liquid outlet port, and each of the liquid outlet valves is respectively arranged on the corresponding liquid outlet branch pipe to put the liquid outlet branch pipe in a flow or cutoff state.

[0016] Furthermore, the filling pipeline includes a filling main pipe, at least two first filling branch pipes, a plurality of second filling branch pipes, at least two second regulating valves and at least two second flow meters, one end of each of the first filling branch pipes is connected to the filling main pipe, one end of each of the second filling branch pipes is respectively connected to the other end of the corresponding first filling branch pipe, the other end of each of the second filling branch pipes is respectively connected to the other end of the corresponding filling pipe, each of the second regulating valves is respectively arranged on the corresponding first filling branch pipe, and each of the second flow meters is respectively arranged on the corresponding first filling branch pipe.

[0017] Compared with the prior art, the utility model has the following beneficial effects: when in use, a salt solution containing a phosphorus source and an iron source enters the reaction chamber along the liquid inlet, hydrogen peroxide can be added into the reaction chamber through each filling pipe, the hydrogen peroxide is added in multiple sections from the side of the tube body, and the hydrogen peroxide of each section is added in multiple streams, which can effectively prevent the situation where the local concentration of hydrogen peroxide is too high, and in the process of the iron phosphate synthesis reaction, hot water or steam is added into the heat preservation chamber through the water inlet as a heating medium, so that the reaction temperature in the reaction chamber is maintained at 50-96° C., thereby ensuring the reaction rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of an iron phosphate reaction device provided by the utility model;

[0019] Figure 2 It is a structural schematic diagram of an iron phosphate reaction device and system provided by the utility model;

[0020] In the figure: 100 - tube body, 110 - inner tube, 111 - reaction chamber, 112 - liquid inlet, 113 - liquid outlet, 120 - jacket, 121 - insulation chamber, 122 - water inlet, 123 - water outlet, 130 - elbow, 200 - filling mechanism, 210 - filling pipe, 300 - stirring mechanism, 310 - rotating shaft, 320 - propeller blade, 330 - rotating drive member, 340 - bearing, 350 - coupling, 400 - sealing mechanism, 500 - liquid inlet pipeline, 510 - liquid inlet main pipe, 520 - Liquid inlet branch pipe, 530 - Liquid inlet valve, 540 - First regulating valve, 550 - First flow meter, 600 - Liquid outlet pipeline, 610 - Liquid outlet main pipe, 620 - Liquid outlet branch pipe, 630 - Liquid outlet valve, 700 - Filling pipeline, 710 - Filling main pipe, 720 - First filling branch pipe, 730 - Second filling branch pipe, 740 - Second regulating valve, 750 - Second flow meter, 800 - Water inlet pipeline, 810 - Water inlet main pipe, 820 - Water inlet branch pipe, 830 - Third regulating valve, 840 - Thermometer. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0022] The utility model provides an iron phosphate reaction device, the structure of which is as follows: Figure 1 As shown, it includes a tube body 100 and at least two filling mechanisms 200, the tube body 100 includes an inner tube 110 and a jacket 120, a reaction chamber 111 is formed in the inner tube 110, and a liquid inlet 112 and a liquid outlet 113 are respectively formed at two ends of the inner tube 110, the jacket 120 is arranged on the outside of the inner tube 110, and a heat preservation chamber 121 is formed between the inner wall of the jacket 120 and the outer wall of the inner tube 110, and a water inlet 122 and a water outlet 123 are opened on the jacket 120, which are both connected to the heat preservation chamber 121; each of the filling mechanisms 200 is arranged at intervals along the length direction of the tube body 100, and includes a plurality of filling pipes 210 that are circumferentially arranged on the side of the tube body 100, and one end of each of the filling pipes 210 is connected to the reaction chamber 111.

[0023] When in use, the salt solution containing the phosphorus source and the iron source enters the reaction chamber 111 along the liquid inlet 112, and hydrogen peroxide can be added into the reaction chamber 111 through each of the filling pipes 210. The hydrogen peroxide is added in multiple sections from the side of the tube body 100, and each section of hydrogen peroxide is added in multiple streams, which can effectively prevent the situation where the local concentration of hydrogen peroxide is too high. During the iron phosphate synthesis reaction, hot water or steam is added into the insulation chamber 121 through the water inlet 122 as a heating medium, so that the reaction temperature in the reaction chamber 111 is maintained at 50-96° C. to ensure the reaction rate.

[0024] As a preferred embodiment, the inner diameter of the inner tube 110 is 100-500 mm, the length is 1-5 m, the axial flow velocity of the fluid in the reaction chamber 111 is 0.05-0.5 m / min, and the iron phosphate reaction device can perform oxidation and aging reactions. When performing oxidation and aging reactions, the structure is basically the same, but the specific dimensions are different. During production, the iron phosphate reaction device for oxidation reaction and the iron phosphate reaction device for aging are used in series.

[0025] As a preferred embodiment, for the oxidation reaction process of ferric phosphate dihydrate, a salt solution containing a phosphorus source and an iron source is introduced into the reaction chamber 111 through the liquid inlet 112. When the iron method is used, the phosphorus source and the iron source are iron-phosphorus solutions generated by the reaction of pure iron and phosphoric acid. When the ferrous method is used, the phosphorus source and the iron source are mixed solutions of ferrous sulfate and monoammonium phosphate or diammonium phosphate. In order to oxidize divalent iron into trivalent iron, hydrogen peroxide is introduced into the reaction chamber 111. In order to prevent the local concentration of hydrogen peroxide from being too high, hydrogen peroxide needs to be added in multiple stages, and each stage is added in multiple streams. For the aging process of ferric phosphate dihydrate, the dihydrate phosphorus from the reaction stage The acid iron slurry enters the reaction chamber 111 along the liquid inlet 112. When the iron process is used, it is not necessary to add other substances into the reaction chamber 111 from the side of the tube body 100 during the process. When the ferrous process is used, phosphoric acid is added into the reaction chamber 111 from the side of the tube body 100 to adjust the aging pH value. To prevent the local concentration of phosphoric acid from being too high, phosphoric acid needs to be added in multiple sections, and each section is added in multiple strands. In actual use, multiple iron phosphate reaction devices can be connected in parallel according to production capacity requirements, and material main pipes can be set at the feeding and discharging positions. This method is also applicable to oxidation reactions or aging stages.

[0026] As a preferred embodiment, please refer to Figure 1 Each of the filling mechanisms 200 is close to the liquid inlet 112. Since the salt solution containing the phosphorus source and the iron source entering the reaction chamber 111 will undergo an oxidation reaction under appropriate temperature conditions, adding hydrogen peroxide near the liquid inlet 112 can oxidize divalent iron into trivalent iron, thereby improving the effect of the oxidation reaction.

[0027] As a preferred embodiment, please refer to Figure 1 The water inlet 122 is close to the liquid outlet 113, and the water outlet 123 is close to the liquid inlet 112, so that the heating medium can move from the liquid outlet 113 to the liquid inlet 112, ensuring that the solution temperature near the liquid outlet 113 is within a suitable range.

[0028] As a preferred embodiment, please refer to Figure 1 The tube body 100 further includes a curved pipe 130 , one end of which is connected to the liquid outlet 113 , so that the solution in the reaction chamber 111 can be discharged to the next working section through the curved pipe 130 .

[0029] As a preferred embodiment, please refer to Figure 1 The iron phosphate reaction device also includes a stirring mechanism 300, which includes a rotating shaft 310, a propeller blade 320 and a rotating driving member 330. The rotating shaft 310 is arranged along the length direction of the inner tube 110, and one end of the rotating shaft 310 is located in the reaction chamber 111. The other end of the rotating shaft 310 rotates through the curved pipe 130 and extends to the outside of the curved pipe 130. The propeller blade 320 is arranged in the reaction chamber 111 and is wound around the rotating shaft 310. The rotating driving member 330 is fixedly connected to the other end of the rotating shaft 310 for driving the rotating shaft 310 to rotate. Due to the problem of uneven distribution of raw material concentration in the reaction chamber 111 during the production of iron phosphate, it is difficult to achieve accurate comparison of core parameters such as specific surface area and iron-phosphorus ratio. Regulation, a large number of solid particles will also be generated during the ferric phosphate synthesis reaction, and these particles are easily deposited at the bottom of the reaction chamber 111, resulting in uneven distribution of solid-liquid phases in the reaction chamber 111, and even blocking equipment and pipe sections. By controlling the rotating drive member 330, the rotating drive member 330 can drive the rotating shaft 310 to rotate, and drive the propeller blade 320 to rotate, so as to promote rapid and uniform mixing of the fluid in the reaction chamber 111, and at the same time prevent the produced dihydrate ferric phosphate from settling to the bottom, resulting in uneven solid-liquid distribution and blockage of equipment and pipe sections. The pitch of the propeller blade 320 is 100-400 mm, the distance between the propeller blade 320 and the inner wall of the inner tube 110 is 10-100 mm, and the rotation speed of the propeller blade 320 is 20-250 r / min.

[0030] As a preferred embodiment, please refer to Figure 1The stirring mechanism 300 also includes a bearing 340, the outer ring of the bearing 340 is fixed on the bracket, and the inner ring of the bearing 340 is used for the other end of the rotating shaft 310 to pass through and is interference connected with the rotating shaft 310. The rotating shaft 310 can be supported by the bearing 340 to prevent the rotating shaft 310 from deviating.

[0031] As a preferred embodiment, please refer to Figure 1 The stirring mechanism 300 further includes a coupling 350 , and two ends of the coupling 350 are respectively connected to the other end of the rotating shaft 310 and the output end of the rotating driving member 330 .

[0032] As a preferred embodiment, please refer to Figure 1 The ferric phosphate reaction device further includes a sealing mechanism 400 , which is disposed at the junction of the rotating shaft 310 and the curved pipe 130 to prevent leakage of material at the junction of the rotating shaft 310 and the curved pipe 130 .

[0033] Please refer to Figure 1 and Figure 2 Based on the above-mentioned iron phosphate reaction device, the utility model also provides an iron phosphate reaction system, including at least two of the above-mentioned iron phosphate reaction devices, a liquid inlet pipeline 500, a liquid outlet pipeline 600, a filling pipeline 700 and a water inlet pipeline 800, each of the tube bodies 100 is arranged side by side, the outlet end of the liquid inlet pipeline 500 is connected to each of the liquid inlets 112, the inlet end of the liquid outlet pipeline 600 is connected to the other end of each of the bent pipes 130, the outlet end of the filling pipeline 700 is connected to the other end of each of the filling pipes 210, and the outlet end of the water inlet pipeline 800 is connected to each of the water inlets 122.

[0034] In actual use, multiple ferric phosphate reaction devices can be connected in parallel according to production capacity requirements, and a salt solution containing a phosphorus source and an iron source is introduced into each reaction chamber 111 through the liquid inlet pipeline 500, and hydrogen peroxide is added into each reaction chamber 111 through the filling pipeline 700 to oxidize divalent iron into trivalent iron, and hot water or steam medium is added into each insulation chamber 121 through the water inlet pipeline 800 to maintain the reaction temperature in the reaction chamber 111 at 50-96°C to ensure the reaction rate. The solution after oxidation reaction in each reaction chamber 111 is discharged into the next process section along the liquid outlet pipeline 600. Multiple ferric phosphate reaction devices are connected in parallel. When the production capacity is increased, only more reaction units of the same size need to be connected in parallel. The implementation is simple and convenient, and the amplification effect of the intermittent kettle reactor is avoided.

[0035] As a preferred embodiment, please refer to Figure 2The liquid inlet pipeline 500 includes a liquid inlet main pipe 510, at least two liquid inlet branch pipes 520, at least two liquid inlet valves 530, at least two first regulating valves 540 and at least two first flowmeters 550. One end of each of the liquid inlet branch pipes 520 is connected to the liquid inlet main pipe 510, and the other end of each of the liquid inlet branch pipes 520 is connected to the corresponding liquid inlet port 112. Each of the liquid inlet valves 530 is respectively arranged on the corresponding liquid inlet branch pipe 520 and is located at the upstream section of the liquid inlet branch pipe 520, so that the liquid inlet branch pipe 520 is in a state of flow or cutoff. state, each of the first regulating valves 540 is respectively arranged on the corresponding liquid inlet branch pipe 520 and is located at the downstream section of the liquid inlet branch pipe 520, each of the first flow meters 550 is respectively arranged on the corresponding liquid inlet branch pipe 520 and is located at the downstream section of the liquid inlet branch pipe 520, the opening of the first regulating valve 540 is automatically adjusted by the first flow meter 550, and the salt solution containing the phosphorus source and the iron source enters each of the liquid inlet branch pipes 520 along the liquid inlet main pipe 510, and enters the corresponding reaction chamber 111 along each of the liquid inlet ports 112 to react.

[0036] As a preferred embodiment, please refer to Figure 2 The liquid outlet pipeline 600 includes a liquid outlet main pipe 610, at least two liquid outlet branch pipes 620 and at least two liquid outlet valves 630. One end of each of the liquid outlet branch pipes 620 is connected to the liquid outlet main pipe 610, and the other end of each of the liquid outlet branch pipes 620 is respectively connected to the other end of the corresponding curved pipe 130. Each of the liquid outlet valves 630 is respectively arranged on the corresponding liquid outlet branch pipe 620 to make the liquid outlet branch pipe 620 in a flow or cut-off state. The reacted solution can be merged into the liquid outlet main pipe 610 along each of the liquid outlet branch pipes 620 and enter the next process section.

[0037] As a preferred embodiment, the liquid inlet branch pipe 520 and the liquid outlet branch pipe 620 of each independent reaction device are respectively provided with the liquid inlet valve 530 and the liquid outlet valve 630. When a reaction device fails, the corresponding liquid inlet valve 530 and the liquid outlet valve 630 can be closed, which will not affect other independent reaction devices.

[0038] As a preferred embodiment, please refer to Figure 2The filling pipeline 700 includes a filling main pipe 710, at least two first filling branch pipes 720, a plurality of second filling branch pipes 730, at least two second regulating valves 740 and at least two second flowmeters 750. One end of each of the first filling branch pipes 720 is connected to the filling main pipe 710, one end of each of the second filling branch pipes 730 is connected to the other end of the corresponding first filling branch pipe 720, and the other end of each of the second filling branch pipes 730 is connected to the other end of the corresponding filling pipe 210. Each of the second regulating valves 740 is respectively arranged on the corresponding first filling branch pipe 720, and each of the second flowmeters 750 is respectively arranged on the corresponding first filling branch pipe 720. The opening of the second regulating valve 740 is automatically adjusted by the second flowmeter 750. The hydrogen peroxide enters the filling main pipe 710, enters the first filling branch pipes 720, enters the second filling branch pipes 730, and finally enters the reaction chambers 111.

[0039] As a preferred embodiment, please refer to Figure 2 The water inlet pipeline 800 includes a water inlet main pipe 810, at least two water inlet branches 820, at least two third regulating valves 830 and at least two thermometers 840. One end of each of the water inlet branches 820 is connected to the water inlet main pipe 810, and the other end of each of the water inlet branches 820 is connected to the corresponding water inlet 122. Each of the third regulating valves 830 is respectively arranged on the corresponding water inlet branch 820, and each of the thermometers 840 is respectively arranged in the corresponding insulation chamber 121. The opening of the third regulating valve 830 is automatically adjusted by the thermometer 840. The heating medium enters each of the water inlet branches 820 along the water inlet main pipe 810 and enters the corresponding insulation chamber 121.

[0040] In order to better understand the present invention, the following Figure 1 - Figure 2 The working principle of the technical solution of the utility model is described in detail:

[0041] In actual use, multiple ferric phosphate reaction devices can be connected in parallel according to production capacity requirements. The salt solution containing the phosphorus source and the iron source enters each of the liquid inlet branch pipes 520 along the liquid inlet main pipe 510, and enters the corresponding reaction chamber 111 along each of the liquid inlet ports 112 to react. The hydrogen peroxide enters the filling main pipe 710, and enters each of the first filling branch pipes 720, and then enters each of the second filling branch pipes 730, and finally enters each of the reaction chambers 111 to oxidize the divalent iron into trivalent iron. The hydrogen peroxide is added in multiple sections from the side of the tube body 100, and each section of the hydrogen peroxide is added in multiple strands, which can effectively prevent the occurrence of In the case where the local concentration of hydrogen peroxide is too high, during the iron phosphate synthesis reaction, the heating medium enters each of the water inlet branches 820 along the water inlet main pipe 810 and enters the corresponding insulation chamber 121, so that the reaction temperature in the reaction chamber 111 is maintained at 50-96° C. to ensure the reaction rate. At the same time, by controlling the rotating drive member 330, the rotating drive member 330 can drive the rotating shaft 310 to rotate and drive the propeller blades 320 to rotate, so as to promote rapid and uniform mixing of the fluid in the reaction chamber 111, and prevent the produced dihydrate iron phosphate from settling to the bottom, resulting in uneven solid-liquid distribution and blockage of equipment and pipe sections.

[0042] The utility model provides an iron phosphate reaction device and system with the following beneficial effects:

[0043] (1) The continuous reaction for producing iron phosphate can greatly improve the batch stability of iron phosphate products. Compared with the larger batch reactor, the smaller tubular reactor can make the precipitation reaction of iron and phosphorus more controllable, which is conducive to the regulation of product indicators.

[0044] (2) The continuous reactor system is composed of independent reaction units connected in parallel. When the production capacity is increased, it is only necessary to connect more reaction units of the same size in parallel. This is simple and convenient to implement, and avoids the amplification effect of intermittent tank reactors.

[0045] (3) Hydrogen peroxide is added from the side of the tube body 100 in multiple sections, and each section of hydrogen peroxide is added in multiple streams, which can effectively prevent the local concentration of hydrogen peroxide from being too high. During the iron phosphate synthesis reaction, hot water or steam is added into the insulation chamber 121 through the water inlet 122 as a heating medium, so that the reaction temperature in the reaction chamber 111 is maintained at 50-96°C to ensure the reaction rate. The propeller blades 320 rotate to promote rapid and uniform mixing of the fluid in the reaction chamber 111, and at the same time prevent the produced iron phosphate dihydrate from settling to the bottom, resulting in uneven solid-liquid distribution and blockage of equipment and pipe sections.

[0046] The specific implementation methods of the utility model described above do not constitute a limitation on the protection scope of the utility model. Any other corresponding changes and modifications made according to the technical concept of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. A ferric phosphate reaction device, characterized in that: include: A tube body, comprising an inner tube and a jacket, wherein a reaction chamber is formed in the inner tube, a liquid inlet and a liquid outlet are formed at two ends of the inner tube respectively, the jacket is arranged to cover the outside of the inner tube, a heat preservation chamber is formed between the inner side wall of the jacket and the outer side wall of the inner tube, and a water inlet and a water outlet are provided on the jacket, both of which are connected to the heat preservation chamber; At least two filling mechanisms are arranged at intervals along the length direction of the tube body, and include a plurality of filling pipes which are arranged circumferentially on the sides of the tube body, and one end of each of the filling pipes is connected to the reaction chamber.

2. The iron phosphate reaction device according to claim 1, characterized in that: Each of the filling mechanisms is close to the liquid inlet.

3. The iron phosphate reaction device according to claim 1, characterized in that: The water inlet is close to the liquid outlet, and the water outlet is close to the liquid inlet.

4. The iron phosphate reaction device according to claim 1, characterized in that: The tube body further comprises a bent tube, one end of which is in communication with the liquid outlet.

5. The iron phosphate reaction device according to claim 4, characterized in that: It also includes a stirring mechanism, which includes a rotating shaft, a propeller blade and a rotating drive member. The rotating shaft is arranged along the length direction of the inner tube, one end of the rotating shaft is located in the reaction chamber, and the other end of the rotating shaft rotates through the bent pipe and extends to the outside of the bent pipe. The propeller blade is arranged in the reaction chamber and is wound around the rotating shaft. The rotating drive member is fixedly connected to the other end of the rotating shaft for driving the rotating shaft to rotate.

6. The iron phosphate reaction device according to claim 5, characterized in that: It also includes a sealing mechanism, which is arranged at the junction of the rotating shaft and the bent pipe.

7. A ferric phosphate reaction system, characterized in that: It comprises at least two ferric phosphate reaction devices as described in any one of claims 1 to 6, a liquid inlet pipeline, a liquid outlet pipeline, a filling pipeline and a water inlet pipeline, wherein the tube bodies are arranged side by side, the outlet end of the liquid inlet pipeline is connected to each of the liquid inlets, the inlet end of the liquid outlet pipeline is connected to each of the liquid outlets, the outlet end of the filling pipeline is connected to the other end of each of the filling pipes, and the outlet end of the water inlet pipeline is connected to each of the water inlets.

8. The ferric phosphate reaction system according to claim 7, characterized in that: The liquid inlet pipeline includes a liquid inlet main pipe, at least two liquid inlet branch pipes, at least two liquid inlet valves, at least two first regulating valves and at least two first flow meters. One end of each of the liquid inlet branch pipes is connected to the liquid inlet main pipe, and the other end of each of the liquid inlet branch pipes is connected to the corresponding liquid inlet port. Each of the liquid inlet valves is respectively arranged on the corresponding liquid inlet branch pipe and located at the upstream section of the liquid inlet branch pipe so that the liquid inlet branch pipe is in a flow or cutoff state. Each of the first regulating valves is respectively arranged on the corresponding liquid inlet branch pipe and located at the downstream section of the liquid inlet branch pipe. Each of the first flow meters is respectively arranged on the corresponding liquid inlet branch pipe and located at the downstream section of the liquid inlet branch pipe.

9. The ferric phosphate reaction system according to claim 7, characterized in that: The liquid outlet pipeline includes a liquid outlet main pipe, at least two liquid outlet branch pipes and at least two liquid outlet valves. One end of each of the liquid outlet branch pipes is connected to the liquid outlet main pipe, and the other end of each of the liquid outlet branch pipes is connected to the corresponding liquid outlet port. Each of the liquid outlet valves is respectively arranged on the corresponding liquid outlet branch pipe to put the liquid outlet branch pipe in a flow or cutoff state.

10. The ferric phosphate reaction system according to claim 7, characterized in that: The filling pipeline includes a filling main pipe, at least two first filling branch pipes, a plurality of second filling branch pipes, at least two second regulating valves and at least two second flow meters, one end of each of the first filling branch pipes is connected to the filling main pipe, one end of each of the second filling branch pipes is connected to the other end of the corresponding first filling branch pipe, the other end of each of the second filling branch pipes is connected to the other end of the corresponding filling pipe, each of the second regulating valves is respectively arranged on the corresponding first filling branch pipe, and each of the second flow meters is respectively arranged on the corresponding first filling branch pipe.

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