CN112403412A - Micro-reactor and reinforced mixing structure for same - Google Patents
Micro-reactor and reinforced mixing structure for same Download PDFInfo
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- CN112403412A CN112403412A CN202011046315.1A CN202011046315A CN112403412A CN 112403412 A CN112403412 A CN 112403412A CN 202011046315 A CN202011046315 A CN 202011046315A CN 112403412 A CN112403412 A CN 112403412A
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- 239000000463 material Substances 0.000 claims abstract description 46
- 238000006243 chemical reaction Methods 0.000 claims description 30
- 230000000903 blocking effect Effects 0.000 abstract description 12
- 238000000034 method Methods 0.000 abstract description 8
- 238000007599 discharging Methods 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 230000035484 reaction time Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0093—Microreactors, e.g. miniaturised or microfabricated reactors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/40—Static mixers
- B01F25/42—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions
- B01F25/421—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions by moving the components in a convoluted or labyrinthine path
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0053—Details of the reactor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00049—Controlling or regulating processes
- B01J2219/00164—Controlling or regulating processes controlling the flow
Abstract
The invention provides an enhanced mixing structure for a microreactor, which comprises a mixing cavity; the mixing cavity comprises a shell and a baffle part, wherein the shell is provided with a feeding hole and a discharging hole, and the baffle part is arranged in the shell and is positioned on a connecting line of the feeding hole and the discharging hole; a clearance channel communicated between the feed inlet and the discharge outlet is formed between the periphery of the blocking part and the shell; the projected area of the blocking part on the plane where the feed inlet is located is larger than the area of the feed inlet, and the projected area of the blocking part on the plane where the discharge outlet is located is larger than the area of the discharge outlet. According to the intensified mixing structure for the microreactor, the baffle part is arranged between the feed inlet and the discharge outlet of the shell, materials entering from the feed inlet impact the baffle part on the flow path, so that the materials are dispersed and output from the discharge outlet after passing through the clearance channel, and the mixing degree of the materials can be further improved in the process.
Description
Technical Field
The invention relates to the field of microreactors, in particular to a microreactor and an intensified mixing structure for the microreactor.
Background
At present, the chemical process is developed towards the direction of fineness and miniaturization, a micro chemical system based on novel equipment such as micro-flow control, micro-reaction, micro-mixing, micro-separation, micro-thermal equipment and the like and a matched process technology thereof is formed, and the micro chemical system has the characteristics of small volume, low energy consumption, high yield and the like. In a microchemical system, a microreactor is a core. The micro-reactor is a compact three-dimensional structural element with the characteristic size of 10-1000 mu m generally, can be used for chemical reaction, has large specific surface area and high heat transfer performance, and can realize the precise control of the reaction process.
The micro-reactor is a continuous flow type reactor, and compared with the traditional batch kettle type reactor, the micro-reactor has the advantages of high heat exchange and mass transfer efficiency, high integration, strict control of reaction time, high selectivity and the like.
However, due to the miniaturized design of the reaction channel of the microreactor, limited by the moving space, the mixing of materials only depends on the irregular movement between molecules, and the residence time of the materials in the reaction channel is short, thereby being not beneficial to the sufficient mixing of the materials in the reaction channel. In the prior art, in order to overcome the problem, a plurality of microreactors are connected in series to prolong the length of a reaction channel, so that the material mixing efficiency and the reaction yield are improved. This way, a large number of microreactors are occupied, equipment investment cost and reaction time are increased, and operation and control difficulty is improved.
Disclosure of Invention
In order to overcome the defect of insufficient material mixing in the reaction channel of the microreactor in the prior art, the invention provides the microreactor and an enhanced mixing structure for the microreactor.
The invention adopts the following technical scheme:
an enhanced mixing structure for a microreactor comprising a mixing chamber; the mixing cavity is connected between an inlet pipeline and an outlet pipeline, the inlet pipeline is used for inputting materials, and the outlet pipeline is used for outputting the materials;
the mixing cavity comprises a shell and a blocking part, the shell is provided with a feed inlet communicated with an inlet pipeline and a discharge outlet communicated with an outlet pipeline, and the blocking part is arranged in the shell and positioned between the feed inlet and the discharge outlet; the projection area of the baffle part on the plane of the feed port is larger than the area of the feed port; a gap channel communicated between the feed inlet and the discharge outlet is formed between the periphery of the blocking part and the shell.
Preferably, the baffle part is a concave panel, the concave surface of the baffle part faces the feed inlet, and the convex surface of the baffle part faces the discharge outlet.
Preferably, the clearance channel is a variable diameter flow channel.
Preferably, the blocking part and the shell are in a rotational symmetric structure; and the central line of the baffle part is collinear with the connecting line of the central point of the feeding hole and the central point of the discharging hole.
Preferably, a concave part is arranged on the periphery of the feeding hole on the inner wall of the shell, an annular turbulence tip is arranged on the annular end part of the blocking part, and the turbulence tip is inserted into the concave part.
Preferably, the shell is also provided with a tapered flow passage communicated with the feed port, and the tapered flow passage is positioned on one side of the feed port, which is deviated from the blocking part; the material enters the feed inlet through the reducing flow passage.
Preferably, the mixing device comprises a plurality of mixing cavities which are sequentially arranged on the same flow passage between the inlet pipeline and the outlet pipeline; along the direction from the inlet pipeline to the outlet pipeline, a discharge hole of the mixing cavity at the front end is coincided with a feed hole of the mixing cavity at the rear end; or, along the direction from the inlet pipeline to the outlet pipeline, the discharge hole of the mixing cavity at the front end is connected with the feed hole of the mixing cavity at the rear end through a gradually-reduced pipe.
The invention provides a micro-reactor, wherein a reaction channel of the micro-reactor is provided with an intensified mixing structure for the micro-reactor.
Preferably, the intensive mixing structure is disposed at the inlet end or at an intermediate position of the reaction channel.
Preferably, the reaction channels and the reinforcing mixing structure are etched in the reaction sheet.
The invention has the advantages that:
(1) according to the intensified mixing structure for the microreactor, the baffle part is arranged between the feed inlet and the discharge outlet of the shell, materials entering from the feed inlet impact the baffle part on the flow path, so that the materials are dispersed and output from the discharge outlet after passing through the clearance channel, and the mixing degree of the materials can be further improved in the process.
(2) In the reinforced mixing structure for the microreactor, the area of the baffle part is larger than the area of the feed inlet and the area of the discharge outlet, so that the bypassing stroke of materials after impacting the baffle part is further ensured, and the material mixing degree is further ensured.
(3) According to the microreactor provided by the invention, the reaction channel is provided with the intensified mixing structure for the microreactor, so that materials input into the reaction channel are fully mixed when passing through the intensified mixing structure, the mixing degree of the materials in the reaction channel is improved, and the reaction yield in the reaction channel is improved.
Drawings
FIG. 1 is a schematic diagram of an intensified mixing structure for a microreactor provided in example 1;
FIG. 2 is a schematic diagram of an intensified mixing structure for a microreactor provided in example 2;
FIG. 3 is a schematic diagram of another intensified mixing structure for a microreactor provided in example 2;
FIG. 4 is a schematic structural diagram of a serially arranged cavity employing the intensified mixing structure of FIG. 1 for a microreactor according to example 3;
FIG. 5 is a schematic structural view of another serially arranged cavity for a microreactor provided in example 3 and employing the intensified mixing structure of FIG. 2;
FIG. 6 is a schematic structural diagram of a serially arranged cavity employing the intensified mixing structure of FIG. 3 for a microreactor according to example 4.
The figure is as follows: an inlet pipeline, an outlet pipeline, a shell 3-1, a baffle part 3-2, a feeding hole 3-3 and a discharging hole 3-4.
Detailed Description
Example 1
The embodiment provides an intensified mixing structure for a microreactor, which comprises a mixing cavity. The mixing cavity is connected between an inlet pipeline and an outlet pipeline, the inlet pipeline is used for inputting materials, and the outlet pipeline is used for outputting the materials.
Referring to fig. 1, the mixing cavity comprises a shell 3-1 and a baffle 3-2, the shell 3-1 is provided with a feed inlet 3-3 for communicating with an inlet pipeline and a discharge outlet 3-4 for communicating with an outlet pipeline, and the baffle 3-2 is installed in the shell 3-1 and is positioned between the feed inlet 3-3 and the discharge outlet 3-4. The projection area of the baffle part 3-2 on the plane of the feed port 3-3 is larger than the area of the feed port 3-3. A clearance channel communicated between the feed port 3-3 and the discharge port 3-4 is formed between the periphery of the baffle part 3-2 and the shell 3-1. In this way, the material entering from the feeding port 3-3 will impact the baffle portion 3-2 on the flow path, so as to be dispersed and output from the discharging port 3-4 after passing through the clearance channel, and the process can further improve the mixing degree of the material.
When the reinforced mixing structure works specifically, the feed port 3-3 and the discharge port 3-4 of the mixing cavity are both positioned on a flow channel communicated between the inlet pipeline and the outlet pipeline. And the feed inlet 3-3 of the same mixing cavity is close to the inlet pipeline, and the discharge outlet 3-4 is close to the outlet pipeline. So, the material of inlet pipe input is exported from outlet pipe after the mixing cavity on the runner, has guaranteed the abundant degree of mixing of the material of outlet pipe output.
In specific implementation, the projection area of the baffle part 3-2 on the plane where the discharge port 3-4 is located can be larger than the area of the discharge port 3-4. Therefore, the turbulence effect of the baffle part 3-2 is increased, and the material mixing degree is improved.
In specific implementation, the baffle part 3-2 is a concave panel, the concave surface of which faces the feed port 3-3, and the convex surface of which faces the discharge port 3-4. Therefore, when the materials input from the feed inlet 3-3 impact the baffle part 3-2, the materials are scattered through the radian of the concave surface of the baffle part 3-2, and the mixing degree is further improved. In a further embodiment, the blocking part 3-2 and the shell 3-1 are both in a rotational symmetrical structure. And the central line of the baffle part 3-2 is collinear with the connecting line of the central point of the feed inlet 3-3 and the central point of the discharge outlet 3-4, so that the baffle part 3-2 can symmetrically divide the material input by the feed inlet 3-3.
The clearance channel forms a gradually-reducing and gradually-expanding flow channel structure at the edge of the baffle part 3-2, namely the diameter of the flow channel is gradually reduced in the process that materials enter the shell 3-1 along the concave flow channel of the baffle part 3-2 to the edge of the baffle part 3-2; the diameter of the flow channel is gradually increased in the process that the material flows from the edge of the baffle part 3-2 to the convex surface of the baffle part 3-2. So, the clearance passageway sets to the reducing runner for the material forms the vortex among the flow process, has further improved the material mixing effect. In specific implementation, the gap channel may be configured as other diameter-variable channel structures, for example, different gap channel structures are provided in fig. 2 and 3.
Example 2
Referring to fig. 2, in the embodiment, a concave portion is formed on the inner wall of the housing 3-1 at the periphery of the feed port 3-3, and an annular turbulence tip is formed on the annular end portion of the baffle portion 3-2 and inserted into the concave portion. Thus, the feeding hole 3-3 is positioned between the plane where the annular end part of the baffle part 3-2 is positioned and the central point of the concave surface of the baffle part 3-2. Thus, in this embodiment, the material fed from the feed port 3-3 flows back along the concave surface of the baffle portion 3-2 in a direction inclined to the feeding direction after striking the baffle portion 3-2, and then passes through the clearance passage. In the material backflow process, the length of a material mixing path is increased, the backflow materials are mixed with the materials which are input from the feed port 3-3 and do not reach the blocking part 3-2 to a certain degree, and the mixing efficiency is improved.
In the embodiment, the shell 3-1 is also provided with a tapered flow passage 1 communicated with the feed port 3-3, and the tapered flow passage 1 is positioned on one side of the feed port 3-3 departing from the baffle part 3-2; the material enters the feed inlet 3-3 through the reducing flow passage 1, and the diameter of the reducing flow passage 1 is gradually reduced in the flowing direction of the material.
In this embodiment, a section of the gap channel, which is located on the convex side of the blocking portion 3-2 and located between the turbulent flow tip and the discharge port 3-4, also adopts a tapered and gradually-expanded flow channel structure.
Meanwhile, in the embodiment, another mixing cavity as shown in fig. 3 is also provided.
Example 3
Referring to fig. 4, the intensified hybrid structure in this embodiment includes a plurality of hybrid cavities as shown in fig. 1. The plurality of mixing chambers are positioned on a flow passage communicating the inlet pipe and the outlet pipe and are arranged in sequence. The discharge opening 3-4 of the mixing chamber at the front end is connected to the feed opening 3-3 of the mixing chamber at the rear end by a reducer which provides a flow path of decreasing diameter from the discharge opening 3-4 at the front end to the feed opening 3-3 at the rear end in the direction from the inlet duct to the outlet duct.
Example 4
Referring to fig. 5, the mixing-enhanced structure in this embodiment includes a plurality of mixing cavities shown in fig. 2. The plurality of mixing chambers are positioned on a flow passage communicating the inlet pipe and the outlet pipe and are arranged in sequence. Along the direction from the inlet pipeline to the outlet pipeline, the discharge port 3-4 of the mixing cavity at the front end is connected with the feed port 3-3 of the mixing cavity at the rear end through a gradually reducing and expanding pipe 2, and the gradually reducing and expanding pipe provides a flow channel with the diameter gradually reduced from the discharge port 3-4 at the front end to the feed port 3-3 at the rear end and then gradually increased so as to increase the vortex effect of the materials in the mixing cavity.
Example 5
Referring to fig. 6, the mixing-enhanced structure in this embodiment includes a plurality of mixing cavities shown in fig. 2. The mixing cavities are positioned on a flow channel communicated between the inlet pipeline and the outlet pipeline and are sequentially arranged, and a discharge port 3-4 of the mixing cavity positioned at the front end and a feed port 3-3 of the mixing cavity positioned at the rear end are overlapped with each other along the direction from the inlet pipeline to the outlet pipeline.
Example 6
In the microreactor provided in this embodiment, the reaction channel is provided with the intensified mixing structure for the microreactor provided by the present invention.
So, through reinforceing mixed structure, carry out intensive mixing to the material before the material gets into reaction channel, improved the reaction yield of material after getting into reaction channel.
In specific implementation, the mixing-enhancing structure may be disposed at an inlet end or at an intermediate position on the reaction channel, or a plurality of mixing-enhancing structures may be disposed on the reaction channel.
In this embodiment, the reaction channels and the reinforced hybrid structure are etched on the reaction plate.
The invention is not to be considered as limited to the specific embodiments shown and described, but is to be understood to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. An enhanced mixing structure for a microreactor comprising a mixing chamber; the mixing cavity is connected between an inlet pipeline and an outlet pipeline, the inlet pipeline is used for inputting materials, and the outlet pipeline is used for outputting the materials;
the mixing cavity comprises a shell (3-1) and a baffle part (3-2), a feed inlet (3-3) for communicating with an inlet pipeline and a discharge outlet (3-4) for communicating with an outlet pipeline are arranged on the shell (3-1), and the baffle part (3-2) is arranged in the shell (3-1) and is positioned between the feed inlet (3-3) and the discharge outlet (3-4); the projection area of the baffle part (3-2) on the plane of the feed port (3-3) is larger than the area of the feed port (3-3); a clearance channel communicated between the feed inlet (3-3) and the discharge outlet (3-4) is formed between the periphery of the baffle part (3-2) and the shell (3-1).
2. An intensified mixing structure for a microreactor according to claim 1, wherein the baffle (3-2) is a concave face plate with its concavity facing the inlet (3-3) and its convexity facing the outlet (3-4).
3. An enhanced mixing structure for a microreactor as in claim 2 wherein the interstitial channels are variable diameter flow channels.
4. The intensified mixing structure for a microreactor according to claim 3, wherein the stopper (3-2) and the housing (3-1) are both rotationally symmetric; and the central line of the baffle part (3-2) is collinear with the connecting line of the central point of the feed inlet (3-3) and the central point of the discharge outlet (3-4).
5. An intensified mixing structure for a microreactor according to claim 4, wherein the inner wall of the casing (3-1) is provided with a recess at the periphery of the feed opening (3-3), and the annular end of the baffle (3-2) is provided with an annular turbulator tip which is inserted into the recess.
6. The intensified mixing structure for a microreactor according to claim 4, wherein the casing (3-1) is further provided with a tapered flow channel (1) communicating with the feed opening (3-3), the tapered flow channel (1) being located on a side of the feed opening (3-3) facing away from the baffle (3-2); the material enters the feed inlet (3-3) through the reducing flow passage (1).
7. An enhanced mixing structure for a microreactor as claimed in claim 1 comprising a plurality of mixing chambers arranged sequentially in a common flow path between an inlet channel and an outlet channel; along the direction from the inlet pipeline to the outlet pipeline, a discharge hole (3-4) of the mixing cavity body positioned at the front end is coincided with a feed hole (3-3) of the mixing cavity body positioned at the rear end; or the discharge hole (3-4) of the mixing cavity at the front end is connected with the feed hole (3-3) of the mixing cavity at the rear end through a tapered and gradually expanded pipe (2) along the direction from the inlet pipeline to the outlet pipeline.
8. A microreactor characterized in that the reaction channel is provided with the intensified mixing structure for a microreactor as claimed in any of claims 1 to 7.
9. The microreactor of claim 8, wherein the intensive mixing structure is provided at an inlet end or at an intermediate position of the reaction channel.
10. The microreactor of claim 8, wherein the reaction channels and the intensive mixing structures are etched into the reaction sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011046315.1A CN112403412A (en) | 2020-09-29 | 2020-09-29 | Micro-reactor and reinforced mixing structure for same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011046315.1A CN112403412A (en) | 2020-09-29 | 2020-09-29 | Micro-reactor and reinforced mixing structure for same |
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| CN112403412A true CN112403412A (en) | 2021-02-26 |
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| CN202011046315.1A Pending CN112403412A (en) | 2020-09-29 | 2020-09-29 | Micro-reactor and reinforced mixing structure for same |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115041038A (en) * | 2022-06-06 | 2022-09-13 | 锦州镁赫化学科技有限公司 | Micro-reactor |
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| CN109092225A (en) * | 2018-11-02 | 2018-12-28 | 南京正源搪瓷设备制造有限公司 | Red heart K-type microreactor |
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| CN210131619U (en) * | 2019-05-10 | 2020-03-10 | 山东豪迈机械制造有限公司 | Microchannel reaction structure and microchannel reactor |
| CN111225739A (en) * | 2017-07-31 | 2020-06-02 | 康宁股份有限公司 | Improved process intensified flow reactor |
| TW202023679A (en) * | 2018-12-24 | 2020-07-01 | 財團法人工業技術研究院 | Microchannel reaction appratus |
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2020
- 2020-09-29 CN CN202011046315.1A patent/CN112403412A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170326520A1 (en) * | 2014-12-08 | 2017-11-16 | Lonza Ltd | Fluid mixing structure, continuous reaction unit, continuous reaction reactor and method of using the same |
| CN111225739A (en) * | 2017-07-31 | 2020-06-02 | 康宁股份有限公司 | Improved process intensified flow reactor |
| CN109092225A (en) * | 2018-11-02 | 2018-12-28 | 南京正源搪瓷设备制造有限公司 | Red heart K-type microreactor |
| TW202023679A (en) * | 2018-12-24 | 2020-07-01 | 財團法人工業技術研究院 | Microchannel reaction appratus |
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Application publication date: 20210226 |