Micro-reactor for preparing iron phosphate

Abstract

The utility model relates to the technical field of iron phosphate preparation, and discloses a microreactor for iron phosphate preparation, which comprises a shell, an inner container is fixedly mounted in the shell, and a delivery pipe communicated with a cavity of the inner container is fixedly mounted at each of two ends of the shell; the separation assembly is detachably arranged in the inner container cavity and used for guiding reactants, the separation assembly comprises a first flow guide body, a second flow guide body and a third flow guide body which are connected end to end, and the first flow guide body, the second flow guide body and the third flow guide body jointly form a gradually-miniaturized channel with taper; the heating uniformity is guaranteed by heating the first flow guide body, the second flow guide body and the third flow guide body through heat conduction oil, the gradually-reduced micro-channels are formed through the funnel-shaped structure, the three-stage gradually-reduced micro-channels are adopted, the turbulent flow mixing effect is enhanced through the variable-diameter structure, in addition, the turbulent flow can restrain deposition in the gradually-reduced micro-channels, blockage is prevented, and the heat conduction efficiency is improved. And the detachable modular design facilitates quick replacement or cleaning during local blockage.

Description

Technical Field

[0001] This utility model relates to the field of ferric phosphate preparation technology, and in particular to a microreactor for ferric phosphate preparation. Background Technology

[0002] According to the prior art, a microreactor (publication number: CN211586547U) is disclosed, including: a T-shaped micro-mixing zone, a micro-reaction channel and an outlet pipe connected in sequence; wherein the T-shaped micro-mixing zone is a hollow cavity structure, and the opposite side walls of the T-shaped micro-mixing zone are respectively provided with an inlet pipe and a distribution chamber connected in sequence, wherein the distribution chamber is adjacent to the side wall of the T-shaped micro-mixing zone.

[0003] Existing microreactors form regular chambers inside. However, in the preparation of lithium iron phosphate, the solid particles in the iron phosphate precipitation reaction can easily cause channel blockage, and the laminar flow mixing effect is poor, indicating room for optimization.

[0004] Therefore, we propose a microreactor for the preparation of iron phosphate. Utility Model Content

[0005] The present invention mainly addresses the technical problems of poor mixing effect and easy internal blockage mentioned above, and provides a microreactor for the preparation of iron phosphate.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a microreactor for preparing iron phosphate, comprising:

[0007] The outer shell has an inner liner fixedly installed inside it, and a delivery pipe connecting the inner liner chamber is fixedly installed at each end of the outer shell.

[0008] A separator assembly, detachably installed within the inner cavity, is used to guide reactants. The separator assembly includes a first guide fluid, a second guide fluid, and a third guide fluid connected end to end, which together form a tapered, gradually shrinking channel.

[0009] In a preferred embodiment of this utility model, the first fluid guide, the second fluid guide, and the third fluid guide are all funnel-shaped structures, and the first fluid guide, the second fluid guide, and the third fluid guide together form a funnel-shaped shell.

[0010] In a preferred embodiment of this utility model, the outer shell is hollow to form a cavity, the inner liner is located inside the cavity of the outer shell, the inner liner is smaller than the inner size of the cavity of the outer shell, and a heat-insulating cavity for heat preservation is formed between the outer shell and the outer wall of the inner liner.

[0011] In a preferred embodiment of this utility model, the outer wall of the inner liner is provided with a plurality of heating rods for heating, and the heating rods are fixedly installed on the inner liner wall by a bracket.

[0012] In a preferred embodiment of this utility model, the bracket and the inner liner are integrally formed, with a hole for the heating rod inserted into the hole.

[0013] In a preferred embodiment of this utility model, the end of the outer shell is provided with an end plate fixed by screws, and the end plate covers and seals the ports of the heat preservation cavity and the inner liner.

[0014] In a preferred embodiment of the present invention, the separating assembly further includes blades and flanges. Blades are fixedly installed on the inner walls of the first, second, and third fluid guides, and the blades form a spiral plate. Flanges are fixedly installed at the ends of the first, second, and third fluid guides that are close to each other, and the flanges are locked with bolts.

[0015] Beneficial effects

[0016] This invention provides a microreactor for the preparation of ferric phosphate. It has the following beneficial effects:

[0017] 1. This microreactor for preparing iron phosphate ensures uniform heating by using a first, second, and third heat-conducting fluid. The funnel-shaped structure formed by installing the first, second, and third heat-conducting fluids inside the inner liner creates a gradually narrowing microchannel. The three-stage gradually narrowing microchannel enhances the turbulent mixing effect through a variable diameter structure. Furthermore, the turbulence can suppress the formation of deposits inside the gradually narrowing channel, preventing blockage. The detachable modular design facilitates quick replacement or cleaning in case of local blockage.

[0018] 2. This microreactor for preparing iron phosphate utilizes a built-in blade design to achieve forced mixing of phosphate and iron salt solutions through fluid dynamics, ensuring the uniformity of fluid mixing. The microchannels are connected by a flange-type quick-release structure, which allows for rapid assembly and disassembly for subsequent maintenance.

[0019] 3. This microreactor for preparing iron phosphate has a double-layer structure formed by the outer shell and the inner liner. With the help of the first fluid guide, the second fluid guide and the third fluid guide, a gradually narrowing microchannel is formed to guide the liquid, providing a constant temperature and constant flow reaction environment for the reactants, ensuring the degree and efficiency of the reaction, and preventing the accumulation of solid particles that could cause channel blockage. In addition, the laminar flow state has a good mixing effect. Attached Figure Description

[0020] Figure 1 This is a perspective view of the entire utility model;

[0021] Figure 2 This is a schematic diagram of the internal structure of the outer shell of this utility model;

[0022] Figure 3This is a partial sectional view of the outer shell and inner liner of this utility model;

[0023] Figure 4 This is a perspective view of the separator component of this utility model;

[0024] Figure 5 This is a schematic diagram of the third fluid-turbating mounting flange and blades of this utility model.

[0025] Legend: 10. Outer shell; 11. Delivery pipe; 12. Inner liner; 13. Insulation cavity; 14. Heating rod; 20. First guide tube; 21. Second guide tube; 22. Third guide tube; 23. Blade; 24. Flange. Detailed Implementation

[0026] A microreactor for the preparation of iron phosphate, such as Figure 1 and Figure 2 As shown, it includes:

[0027] The outer shell 10 has an inner liner 12 fixedly installed inside it. A delivery pipe 11 connecting the inner liner 12 is fixedly installed at each end of the outer shell 10. The outer shell 10 is hollow, forming a cavity. The inner liner 12 is located inside the cavity of the outer shell 10 and is smaller than the cavity size of the outer shell 10. A heat-insulating cavity 13 is formed between the outer walls of the outer shell 10 and the inner liner 12. The outer wall of the inner liner 12 is provided with a plurality of heating rods 14 for heating. The heating rods 14 are fixedly installed on the wall of the inner liner 12 by a bracket. The bracket and the inner liner 12 are integrally formed and have holes for fitting the heating rods 14. The heating rods 14 are inserted into the holes. The end of the outer shell 10 is provided with an end plate fixed by screws. The end plate blocks and seals the ports of the heat-insulating cavity 13 and the inner liner 12.

[0028] In this scheme, a double-layer structure formed by the outer shell 10 and the inner liner 12 is used to reduce heat loss. The inner liner 12 is heated by an electric heating rod 14. The heated inner liner 12 provides a constant temperature reaction environment for the reactants. The electric heating rod 14 can be connected to a controller to realize temperature regulation and control.

[0029] like Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the separator is detachably installed in the cavity of the inner liner 12 to guide the reactants. The separator includes a first guide fluid 20, a second guide fluid 21, and a third guide fluid 22 connected end to end. The first guide fluid 20, the second guide fluid 21, and the third guide fluid 22 together form a tapered, gradually shrinking channel. The first guide fluid 20, the second guide fluid 21, and the third guide fluid 22 are all funnel-shaped structures. The first guide fluid 20, the second guide fluid 21, and the third guide fluid 22 together form a funnel-shaped shell.

[0030] In this design, it should be noted that a heating chamber is formed between the inner liner 12 and the first guide fluid 20, the second guide fluid 21, and the third guide fluid 22. Heat transfer oil can be injected into the heating chamber to heat the first guide fluid 20, the second guide fluid 21, and the third guide fluid 22, ensuring uniform heating. By installing the first guide fluid 20, the second guide fluid 21, and the third guide fluid 22 inside the inner liner 12, a funnel-shaped structure forms a tapered microchannel. The three-stage tapered microchannel enhances the turbulent mixing effect through a variable diameter structure. The detachable modular design facilitates quick replacement or cleaning in case of local blockage.

[0031] like Figure 5 As shown, the separating assembly also includes blades 23 and flanges 24. Blades 23 are fixedly installed on the inner walls of the first fluid guide 20, the second fluid guide 21 and the third fluid guide 22. The blades 23 form a spiral plate. Flanges 24 are fixedly installed at the ends of the first fluid guide 20, the second fluid guide 21 and the third fluid guide 22 that are close to each other. The flanges 24 are locked by bolts.

[0032] In this scheme, as a supplement to the above scheme, the first fluid guide 20 and the third fluid guide 22 can be installed by locking the same flange 24 to both ends of the outer shell 10. The design of the built-in blade 23 uses fluid dynamics to achieve forced mixing of phosphate and iron salt solutions, ensuring the uniformity of fluid mixing. Each microchannel is connected by a flange quick-release structure, which can be quickly disassembled and assembled for subsequent maintenance operations.

[0033] In summary, the double-layer structure formed by the outer shell 10 and the inner liner 12, together with the first guide fluid 20, the second guide fluid 21 and the third guide fluid 22, forms a gradually narrowing microchannel to guide the liquid, providing a constant temperature and constant flow reaction environment for the reactants, ensuring the degree and efficiency of the reaction, preventing the accumulation of solid particles that could cause channel blockage, and ensuring good mixing effect in laminar flow.

[0034] The working principle of this utility model is as follows: One of the delivery pipes is connected to the container. The mixed slurry is sent into the inner liner 12 cavity. The slurry flows from the largest third guide fluid 22 to the first guide fluid 20. The variable diameter structure enhances the turbulent mixing effect. With the design of the built-in blades 23, the hydrodynamic force is used to achieve forced mixing of phosphate and iron salt solutions, ensuring the mixing effect of the reactants. A heating chamber is formed between the inner liner 12 and the first guide fluid 20, the second guide fluid 21, and the third guide fluid 22. Heat transfer oil can be injected into the heating chamber. The heat transfer oil heats the first guide fluid 20, the second guide fluid 21, and the third guide fluid 22 to ensure the uniformity of heating. The electric heating rod 14 heats the inner liner 12. The heated inner liner 12 provides a constant temperature reaction environment for the reactants.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A microreactor for preparing ferric phosphate, characterized in that, include: The outer shell (10) has an inner liner (12) fixedly installed inside it, and a delivery pipe (11) connecting the inner liner (12) is fixedly installed at each end of the outer shell (10). The separator is detachably installed in the cavity of the inner liner (12) to guide the reactants. The separator includes a first guide fluid (20), a second guide fluid (21) and a third guide fluid (22) connected end to end. The first guide fluid (20), the second guide fluid (21) and the third guide fluid (22) together form a tapered, gradually shrinking channel.

2. The microreactor for preparing ferric phosphate according to claim 1, characterized in that: The first fluid guide (20), the second fluid guide (21) and the third fluid guide (22) are all funnel-shaped structures, and the first fluid guide (20), the second fluid guide (21) and the third fluid guide (22) together form a funnel-shaped shell.

3. The microreactor for preparing ferric phosphate according to claim 1, characterized in that: The outer shell (10) is hollow inside to form a cavity, and the inner liner (12) is located inside the cavity of the outer shell (10). The inner liner (12) is smaller than the inner size of the cavity of the outer shell (10). A heat-insulating cavity (13) for heat preservation is formed between the outer walls of the outer shell (10) and the outer walls of the inner liner (12).

4. The microreactor for preparing iron phosphate according to claim 1, characterized in that: The outer wall of the inner liner (12) is provided with a plurality of heating rods (14) for heating, and the heating rods (14) are fixedly installed on the wall of the inner liner (12) by a bracket.

5. The microreactor for preparing ferric phosphate according to claim 4, characterized in that: The bracket and the inner liner (12) are integrally formed, and a hole for the heating rod (14) is provided between them. The heating rod (14) is inserted into the hole.

6. The microreactor for preparing ferric phosphate according to claim 3, characterized in that: The outer shell (10) is provided with an end plate fixed by screws at its end, which blocks and seals the ports of the heat insulation cavity (13) and the inner liner (12).

7. The microreactor for preparing ferric phosphate according to claim 1, characterized in that: The separation assembly also includes blades (23) and flanges (24). Blades (23) are fixedly installed on the inner walls of the first fluid guide (20), the second fluid guide (21), and the third fluid guide (22). The blades (23) form a spiral plate. Flanges (24) are fixedly installed at the ends of the first fluid guide (20), the second fluid guide (21), and the third fluid guide (22) that are close to each other. The flanges (24) are locked by bolts.

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