Microchannel reactor for extraction

Abstract

The utility model discloses a microchannel reactor for extraction, and particularly relates to the field of rare earth extraction, the microchannel reactor comprises a microchannel reactor main body, one side of the microchannel reactor main body is provided with a microchannel mixer, the interior of the microchannel reactor main body is communicated with a plurality of groups of channels, and each channel is formed by communicating a plurality of heart-shaped channels and converging channels at intervals; the top end of the channel is provided with a liquid inlet cavity, and the bottom end of the channel communicates with a liquid outlet cavity. According to the utility model, mixed feed liquid is divided into fine branches to react in respective channels through a plurality of groups of channels, the mixed feed liquid is fully reacted and mixed through the effects of dispersion, collision and the like generated by convergence and separation in the heart-shaped channel, and finally, the mixed feed liquid is converged into the liquid outlet cavity to complete the reaction and mixing of the feed liquid; the mixing reaction efficiency is greatly improved, the rare earth feed liquid and the extraction agent are mixed and reacted completely by arranging the micro-channel mixer and the micro-channel reactor main body, and compared with a traditional process device, the reactor is small in power consumption and high in reaction efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of rare earth extraction, in particular to a microchannel reactor for extraction. Background Art

[0002] In the rare earth extraction process, the rare earth liquid and the extractant are often mixed using a multi-stage extraction process, in which several extractors are connected in series to achieve multiple contact reactions between the aqueous phase and the organic phase.

[0003] During the extraction process, due to the limitations of the distribution ratio and separation coefficient, it is difficult to achieve the purpose of effective separation with only one extraction. Therefore, multi-stage extraction or series connection is set up to achieve multiple extractions of the aqueous phase and the organic phase. The series connection of the extraction box and the stirring device increases the floor space and increases the power consumption. The rare earth liquid and the extractant cannot fully contact and react under the stirring action, and the reaction efficiency is low.

[0004] Therefore, we have made improvements to this and proposed a microchannel reactor for extraction. Utility Model Content

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] The utility model discloses a microchannel reactor for extraction, comprising a microchannel reactor body, a microchannel mixer being provided on one side of the microchannel reactor body, and the microchannel reactor body and the microchannel mixer being connected via a high-pressure pump and a connecting pipe;

[0007] The interior of the microchannel reactor body is connected up and down with multiple heart-shaped channels, and the multiple heart-shaped channels are formed by multiple heart-shaped channels and a converging channel connected at intervals. The top of the channel is connected to a liquid inlet cavity, and the bottom of the channel is connected to a liquid outlet cavity; the top surface of the microchannel reactor body is provided with a material inlet a and a material inlet b, and the material inlet a and the material inlet b are respectively connected to the liquid inlet cavity; the bottom surface of the microchannel reactor body is provided with a material outlet a and a material outlet b, and the material outlet a and the material outlet b are both connected to the liquid outlet cavity.

[0008] As a preferred technical solution of the present invention, the outside of the microchannel reactor body is a device plate, and the middle of the device plate is engraved with multiple groups of heart-shaped channels, and the multiple groups of heart-shaped channels are arranged together in the middle of the device plate;

[0009] Water lines a and b are respectively provided on both sides of the middle of the device plate for sealing multiple groups of device plates.

[0010] As an optimal technical solution of the present invention, one side of the surface of the device plate is respectively provided with fastening connection holes a, fastening connection holes c, and fastening connection holes e from top to bottom; the other side of the surface of the device plate is respectively provided with fastening connection holes b, fastening connection holes d, and fastening connection holes f from top to bottom.

[0011] As a preferred technical solution of the present invention, the microchannel mixer is composed of an upper shell and a lower shell. The upper shell is connected to the lower shell and the exterior of the upper shell and the lower shell are fixed by a support plate.

[0012] As a preferred technical solution of the present invention, the top surface of the upper shell is connected to a rare earth liquid inlet, the side surface of the upper shell is connected to an extractant liquid inlet, and a plurality of upper and lower pipes are arranged inside the upper shell.

[0013] As an optimal technical solution of the present invention, there is a cavity between the upper pipe opening of the upper pipe and the rare earth liquid port, and both the upper pipe opening and the rare earth liquid port are connected to the cavity; the lower pipe opening of the lower pipe is connected to the inside of the lower shell.

[0014] As a preferred technical solution of the present invention, the upper pipe narrows from top to bottom, the lower pipe narrows from bottom to top, and the upper pipe opening of the lower pipe is connected to the channel interface, the lower pipe opening of the upper pipe is inserted into the upper pipe opening of the lower pipe, and the extractant liquid port and the channel interface are located on the same horizontal line, and the channel interface and the lower pipe are separated by a partition.

[0015] The beneficial effects of the utility model are:

[0016] In the utility model, the mixed liquid is divided into fine branches through multiple groups of channels and reacts in their respective channels. The mixed liquid is fully reacted and mixed by merging and separating to produce dispersion and collision in the heart-shaped channel, and finally flows into the liquid outlet cavity to complete the reaction and mixing of the liquid. After passing through this special heart-shaped channel, the mixing reaction efficiency is greatly improved, and by providing a microchannel mixer and a microchannel reactor body, the rare earth liquid and the extractant are mixed and reacted completely. Compared with traditional process devices, the reactor has low power consumption and high reaction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 This is a structural diagram of a microchannel reactor body and a microchannel mixer in a microchannel reactor for extraction of the utility model;

[0019] Figure 2This is a structural schematic diagram of a microchannel reactor body in a microchannel reactor for extraction according to the present invention;

[0020] Figure 3 This is a schematic diagram of the top view of a microchannel reactor for extraction in the utility model;

[0021] Figure 4 This is a left-side structural schematic diagram of a microchannel reactor for extraction according to the present invention;

[0022] Figure 5 The utility model is a partial structural schematic diagram of a microchannel mixer in a microchannel reactor for extraction.

[0023] In the figure: 1. material inlet a; 2. material inlet b; 3. water line a; 4. water line b; 5. liquid inlet chamber; 6. fastening connection hole a; 7. fastening connection hole b; 8. fastening connection hole c; 9. fastening connection hole d; 10. fastening connection hole e; 11. fastening connection hole f; 12. material outlet a; 13. material outlet b; 14. liquid outlet chamber; 15. heart-shaped channel; 16. device plate; 17. converging channel; 18. microchannel mixer; 19. high-pressure pump; 20. microchannel reactor body;

[0024] 181. Rare earth material liquid inlet; 182. Upper shell; 183. Extractant liquid inlet; 184. Channel interface; 185. Support plate; 186. Upper pipeline; 187. Lower pipeline. DETAILED DESCRIPTION

[0025] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention and are not used to limit the present invention.

[0026] Example: Figures 1 to 5 As shown, the utility model provides a microchannel reactor for extraction, including a microchannel reactor body 20, a microchannel mixer 18 is provided on one side of the microchannel reactor body 20, and the microchannel reactor body 20 and the microchannel mixer 18 are connected by a high-pressure pump 19 and a connecting pipe; the microchannel mixer 18 can mix the rare earth liquid and the extractant during rare earth extraction, and the mixed liquid enters the microchannel reactor body 20 under the action of the high-pressure pump 19 and the connecting pipe for reaction and mixing.

[0027] The interior of the microchannel reactor body 20 is connected from top to bottom with multiple heart-shaped channels, with a total of 12 channels. The multiple heart-shaped channels are composed of multiple heart-shaped channels 15 and merging channels 17 connected at intervals. The merging channels 17 connecting the heart-shaped channels 15 are 2 mm wide and 9 mm deep, and there are 22 heart-shaped channels 15 and 22 merging channels 17. The top of the channel is connected to the liquid inlet cavity 5, and the bottom end of the channel is connected to the liquid outlet cavity 14; the top surface of the microchannel reactor body 20 is provided with a material inlet a1 and a material inlet b2, and the material inlet a1 and the material inlet b2 are respectively connected to the liquid inlet cavity 5; the bottom surface of the microchannel reactor body 20 is provided with a material outlet a12 and a material outlet b13, and the material outlet a12 and the material outlet b13 are both connected to the liquid outlet cavity 14.

[0028] The mixed liquid enters the liquid inlet chamber 5 from the material inlet a1 and the material inlet b2, then enters the channel from the liquid inlet chamber 5, passes through the merging channel 17 and the heart-shaped channel 15 for mixed contact reaction, and finally enters the material outlet a12 and the material outlet b13 from the liquid outlet chamber 14, and is discharged from the material outlet a12 and the material outlet b13. The heart-shaped channel 15 can enable the mixed liquid to achieve sufficient reaction and mixing through separation, merging, dispersion, collision and other effects, thereby greatly improving the mixing reaction efficiency.

[0029] The outside of the microchannel reactor body 20 is the device plate 16, which is 20 mm thick. Multiple heart-shaped channels are engraved in the middle of the device plate 16, and the multiple heart-shaped channels are arranged together in the middle of the device plate 16; waterlines a3 and waterlines b4 are respectively opened on both sides of the middle of the device plate 16 for sealing the multiple groups of device plates 16.

[0030] One side of the surface of the device plate 16 is provided with fastening connection holes a6, fastening connection holes c8, and fastening connection holes e10 from top to bottom; the other side of the surface of the device plate 16 is provided with fastening connection holes b7, fastening connection holes d9, and fastening connection holes f11 from top to bottom. When the amount of mixed liquid is large, the fastening connection holes a6, fastening connection holes c8, fastening connection holes e10, fastening connection holes b7, fastening connection holes d9, and fastening connection holes f11 can be used to splice multiple device plates 16, thereby facilitating the expansion of the device.

[0031] The microchannel mixer 18 consists of an upper shell 182 and a lower shell. The upper shell 182 is connected to the lower shell and fixed to the outside of the lower shell by a support plate 185. The top surface of the upper shell 182 is connected to a rare earth feed liquid inlet 181, and the side surface of the upper shell 182 is connected to an extractant liquid inlet 183. The interior of the upper shell 182 is provided with multiple upper pipes 186 and lower pipes 187. The rare earth feed liquid enters through the rare earth feed liquid inlet 181, and the extractant enters through the extractant liquid inlet 183. After the two are mixed, they flow out through the lower pipe 187.

[0032] A cavity is defined between the upper opening of upper conduit 186 and rare earth feed liquid inlet 181, and both the upper opening and rare earth feed liquid inlet 181 are connected to the cavity. The lower opening of lower conduit 187 is connected to the interior of the lower shell. Upper conduit 186 narrows from top to bottom, while lower conduit 187 narrows from bottom to top. The upper opening of lower conduit 187 is connected to channel interface 184. The lower opening of upper conduit 186 is inserted into the upper opening of lower conduit 187. The extractant liquid inlet 183 and channel interface 184 are located on the same horizontal line, and a partition separates channel interface 184 from lower conduit 187.

[0033] The extractant and rare earth liquid merge at the channel interface 184, flow out from the lower pipe 187 after merging, enter the lower shell, and finally enter the microchannel reactor body 20 under the action of the high-pressure pump 19 for mixing reaction.

[0034] During operation, the mixed liquid is divided into fine branches through multiple groups of channels and reacts in their respective channels. The mixed liquid is fully reacted and mixed by merging, separating, dispersing, colliding, etc. in the heart-shaped channel 15, and finally flows into the liquid outlet cavity 14 to achieve mixing. After passing through this special heart-shaped channel 15, the mixing reaction efficiency is greatly improved, and by setting up the microchannel mixer 18 and the microchannel reactor body 20, the rare earth liquid and the extractant are mixed and reacted completely. Compared with traditional process devices, this reactor has low power consumption and high reaction efficiency.

[0035] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A microchannel reactor for extraction, comprising a microchannel reactor body (20), characterized in that: A microchannel mixer (18) is provided on one side of the microchannel reactor body (20), and the microchannel reactor body (20) and the microchannel mixer (18) are connected via a high-pressure pump (19) and a connecting pipe; The interior of the microchannel reactor body (20) is provided with multiple heart-shaped channels connected in an upper and lower manner. The multiple heart-shaped channels are formed by multiple heart-shaped channels (15) and a merging channel (17) connected at intervals. The top end of the channel is connected to a liquid inlet cavity (5), and the bottom end of the channel is connected to a liquid outlet cavity (14). The top surface of the microchannel reactor body (20) is provided with a material inlet a (1) and a material inlet b (2), and the material inlet a (1) and the material inlet b (2) are respectively connected to the liquid inlet cavity (5); the bottom surface of the microchannel reactor body (20) is provided with a material outlet a (12) and a material outlet b (13), and the material outlet a (12) and the material outlet b (13) are both connected to the liquid outlet cavity (14).

2. A microchannel reactor for extraction according to claim 1, characterized in that, The outside of the microchannel reactor body (20) is a device plate (16), and the middle of the device plate (16) is engraved with multiple groups of heart-shaped channels, and the multiple groups of heart-shaped channels are collectively arranged in the middle of the device plate (16); Water lines a (3) and water lines b (4) are respectively provided on both sides of the device plate (16) for sealing multiple groups of device plates (16).

3. A microchannel reactor for extraction according to claim 2, characterized in that, One side of the surface of the device plate (16) is provided with a fastening connection hole a (6), a fastening connection hole c (8), and a fastening connection hole e (10) from top to bottom; the other side of the surface of the device plate (16) is provided with a fastening connection hole b (7), a fastening connection hole d (9), and a fastening connection hole f (11) from top to bottom.

4. The microchannel reactor for extraction according to claim 1, wherein The microchannel mixer (18) is composed of an upper shell (182) and a lower shell. The upper shell (182) is connected to the lower shell, and the outer portions of the upper shell (182) and the lower shell are fixed via a support plate (185).

5. A microchannel reactor for extraction according to claim 4, characterized in that, The top surface of the upper shell (182) is connected to a rare earth liquid inlet (181), the side surface of the upper shell (182) is connected to an extractant liquid inlet (183), and a plurality of upper pipes (186) and lower pipes (187) are arranged inside the upper shell (182).

6. The microchannel reactor for extraction according to claim 5, characterized in that: There is a cavity between the upper pipe opening of the upper pipe (186) and the rare earth liquid port (181), and both the upper pipe opening and the rare earth liquid port (181) are connected to the cavity; the lower pipe opening of the lower pipe (187) is connected to the interior of the lower shell.

7. The microchannel reactor for extraction according to claim 6, characterized in that: The upper pipe (186) narrows from top to bottom, and the lower pipe (187) narrows from bottom to top, and the upper pipe opening of the lower pipe (187) is connected to the channel interface (184), the lower pipe opening of the upper pipe (186) is inserted into the upper pipe opening of the lower pipe (187), and the extractant liquid port (183) and the channel interface (184) are located on the same horizontal line, and the channel interface (184) and the lower pipe (187) are separated by a partition.

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