CN212348687U - Microchannel structure, microchannel reaction assembly with same and microchannel reactor - Google Patents
Microchannel structure, microchannel reaction assembly with same and microchannel reactor Download PDFInfo
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- CN212348687U CN212348687U CN202022048428.7U CN202022048428U CN212348687U CN 212348687 U CN212348687 U CN 212348687U CN 202022048428 U CN202022048428 U CN 202022048428U CN 212348687 U CN212348687 U CN 212348687U
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Abstract
The utility model relates to a chemical industry pharmaceutical reaction equipment technical field, concretely relates to microchannel structure, microchannel reaction unit and microchannel reactor that have it. A microchannel structure comprising: the first reaction channels are linearly arranged at intervals along a first direction, and at least two first inlets and one first outlet are arranged on the first reaction channels; the plurality of second reaction channels are arranged at intervals in a linear mode along the first direction, at least two second outlets and one second inlet are formed in each second reaction channel, the second reaction channels and the first reaction channels are arranged in a stacked and staggered mode, a transition channel is arranged at the joint of each second inlet and the main body of each second reaction channel, and the cross section area of each transition channel is smaller than that of each second inlet along the flowing direction of the fluid. The reaction medium entering the reaction channel is continuously converged and then shunted, and then converged, and the mixing effect of the reaction medium in the microchannel can be effectively improved along with the upward and downward surge and the instantaneous increase of the flow velocity of the reaction medium.
Description
Technical Field
The utility model relates to a chemical industry pharmaceutical reaction equipment technical field, concretely relates to microchannel structure, microchannel reaction unit and microchannel reactor that have it.
Background
Microchannel reactors are three-dimensional structural elements that can be used to carry out chemical reactions that are fabricated in a solid matrix by means of special microfabrication techniques. Microchannel reactors typically contain small channel sizes and channel diversity in which the fluid flows and in which the desired reactions are desired to occur. The micro-channel reactor has a very large specific surface area in a micro-structured chemical device, and has better heat transfer and mass transfer capacity compared with a reaction kettle.
In the prior art, a microchannel reactor includes a pair of heat exchange assemblies disposed on two sides and a reaction assembly disposed between the pair of heat exchange assemblies. The reaction media are continuously divided and merged in the channel in the reaction assembly to realize the mixing of the reaction media, after the channel of the reaction assembly is gradually filled with the reaction media, the reaction media can move along the same flow trend in the channel to form downstream flow, the flow trend of the reaction media in the channel is smooth, the flow collision of the reaction media in the channel is not intense enough, the mixing effect is not ideal enough, and the reaction yield is low.
SUMMERY OF THE UTILITY MODEL
Therefore, the to-be-solved technical problem of the utility model lies in overcoming among the microchannel reactor among the prior art that the mixed effect of reaction medium is relatively poor, the lower defect of reaction yield to a microchannel structure, microchannel reaction subassembly and microchannel reactor that have it are provided.
In order to solve the technical problem, the utility model provides a microchannel structure, include:
the first reaction channels are linearly arranged at intervals along a first direction, and at least two first inlets and one first outlet are arranged on the first reaction channels;
the plurality of second reaction channels are arranged at intervals in a linear mode along a first direction, at least two second outlets and one second inlet are formed in each second reaction channel, the second reaction channels and the first reaction channels are arranged in a stacked and staggered mode, the first inlet of each first reaction channel is communicated with the second outlet of the previous second reaction channel, the first outlet of each first reaction channel is communicated with the second inlet of the next second reaction channel, a transition channel is arranged at the joint of each second inlet and the main body of each second reaction channel, and the cross section area of each transition channel is smaller than that of each second inlet along the flowing direction of the fluid.
Optionally, the first reaction channel and the second reaction channel are both "Ω" type channels, the "Ω" type channels include the arc main part and locate two connecting portions of the end of the arc main part, the first outlet and the second inlet are both located in the cavity that the arc main part encloses and closes and form, and the first inlet and the second outlet are both located at the connecting portions.
Optionally, the first reaction channel and the second reaction channel are arranged in a plurality of rows in a second direction perpendicular to the first direction, and two adjacent second reaction channels in the second direction are arranged in a communicating manner.
Optionally, a communication channel for communicating two adjacent second reaction channels is arranged on the arc-shaped main body part.
The utility model also provides a microchannel reaction assembly, has the microchannel structure.
Optionally, the mixing device includes a first mixing channel and a second mixing channel which are stacked, each of the first mixing channel and the second mixing channel includes a plurality of sets of first reaction channels and second reaction channels which are alternately arranged at intervals, a first outlet on the first mixing channel is communicated with a second inlet on the second mixing channel in a one-to-one correspondence manner, a first inlet on the first mixing channel is communicated with a second outlet on the second mixing channel in a one-to-one correspondence manner, and the first reaction channels on the first mixing channel and the second reaction channels on the second mixing channel in the same direction are oppositely oriented and are arranged in a staggered manner, so that the first mixing channel is completely communicated with the second mixing channel.
Optionally, the first mixing channel is provided with at least two reaction medium inlets, and the at least two reaction medium inlets are both communicated with the same group of first reaction channels.
Optionally, the first mixing channel and the second mixing channel are both formed on the same single plate.
Optionally, the first mixing channel is formed on a first reaction plate, the second mixing channel is formed on a second reaction plate, and the first reaction plate and the second reaction plate are spliced in a stacked manner.
The utility model also provides a microchannel reactor, has the microchannel reaction subassembly.
The utility model discloses technical scheme has following advantage:
1. the utility model provides a microchannel structure, include: the first reaction channels are linearly arranged at intervals along a first direction, and at least two first inlets and one first outlet are arranged on the first reaction channels; the plurality of second reaction channels are arranged at intervals in a linear mode along a first direction, at least two second outlets and one second inlet are formed in each second reaction channel, the second reaction channels and the first reaction channels are arranged in a stacked and staggered mode, the first inlet of each first reaction channel is communicated with the second outlet of the previous second reaction channel, the first outlet of each first reaction channel is communicated with the second inlet of the next second reaction channel, a transition channel is arranged at the joint of each second inlet and the main body of each second reaction channel, and the cross section area of each transition channel is smaller than that of each second inlet along the flowing direction of the fluid.
The first reaction channel and the second reaction channel are connected end to end and are arranged in a stacked and staggered mode, multiple reaction media jointly enter the first reaction channel to be mixed and then flow to the second inlet through the first outlet, and enter the transition channel in the next layer. The reaction medium is divided into at least two parts after passing through the transition channel, and the two parts enter another first reaction channel through different second outlets respectively. The reaction medium is divided after being continuously combined, and is combined after being divided, and the mixing effect of the reaction medium in the micro-channel can be effectively improved along with the instant increase of the flow velocity of the reaction medium which is realized by the upward and downward surge and the transition channel, so that the reaction yield of the product is improved, the residual rate of the raw materials is reduced, the waste of the reaction raw materials is reduced, and the production yield is improved.
2. The utility model provides a microchannel structure, first reaction channel and second reaction channel are "omega" type passageway, and "omega" type passageway includes the arc main part and locates two connecting portion of arc main part tip, and first export and second import are all located in the arc main part encloses the cavity that closes formation, and connecting portion department is all located in first import and second export. The first outlet and the second inlet are arranged in a cavity formed by the arc-shaped main body part in a surrounding mode, so that the flowing direction of the reaction medium flowing to the first outlet in the first reaction channel is opposite to the flowing direction of the reaction medium after entering the transition channel, the reaction medium rolls up and down, the reaction medium is violently collided with the inner wall of the channel when entering the transition channel, and the mixing effect is further improved.
3. The utility model provides a microchannel structure, first reaction channel and second reaction channel all are provided with the multiseriate on the second direction of the first direction of perpendicular to, and two adjacent second reaction channel intercommunication settings in the second direction. Connect multiunit second reaction channel and first reaction channel in the horizontal direction to make adjacent second reaction channel communicate in the second direction, make the reaction medium that flows into in the second reaction channel can mix with the reaction medium in the adjacent second reaction channel, in order to balance the internal pressure between each passageway, the medium flow in the inside of balanced each passageway, the maximize guarantees mixed effect.
4. The utility model provides a microchannel reaction assembly, first hybrid channel and second hybrid channel including range upon range of setting, first hybrid channel and second hybrid channel all include first reactant channel and the second reactant channel that multiunit interval set up in turn, first export on the first hybrid channel and the second import one-to-one on the second hybrid channel intercommunication, first import on the first hybrid channel and the second export one-to-one on the second hybrid channel intercommunication, correspond ascending second reactant channel orientation on same ascending first reactant channel of orientation and the second hybrid channel on the first hybrid channel and crisscross the setting to make first hybrid channel and second hybrid channel communicate completely. Utilize multiunit microchannel structure interval to set up and constitute first mixed passageway and second mixed passageway for reaction medium passes through a plurality of first mixed passageways and second mixed passageway repeatedly, increases the path length that reaction medium flows through, and the length of time that increases reaction medium and mix increases reaction medium's mixed effect.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view of the flow direction of a reaction medium in a microchannel structure according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of two rows of "Ω" type channels arranged side by side in an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a microchannel reaction assembly according to an embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a separator provided in an embodiment of the present invention.
Fig. 5 is a schematic structural view of a first reaction plate according to an embodiment of the present invention.
Fig. 6 is a schematic structural view of a second reaction plate according to an embodiment of the present invention.
Fig. 7 is a schematic structural diagram of a heat exchange plate according to an embodiment of the present invention.
Fig. 8 is a schematic structural view of a sideboard provided in an embodiment of the present invention.
Fig. 9 is a schematic structural diagram of a microchannel reactor according to an embodiment of the present invention.
Fig. 10 is a schematic diagram of four rows of "Ω" shaped channels arranged side by side in an embodiment of the present invention.
Description of reference numerals: 1. a first reaction plate; 2. a second reaction plate; 3. a first reaction channel; 4. a second reaction channel; 5. a first inlet; 6. a first outlet; 7. a second inlet; 8. a second outlet; 9. a reaction medium inlet; 10. a reaction medium outlet; 11. a heat exchange plate; 12. a side plate; 13. a heat exchange medium inlet; 14. a heat exchange medium outlet; 15. a heat exchange flow channel; 16. a transition passage; 17. a separator.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.
Example 1
As shown in fig. 1 and 2, the present embodiment provides a microchannel structure including: a plurality of first reaction channels 3 and a plurality of second reaction channels 4.
As shown in fig. 1, a plurality of first reaction channels 3 are arranged at intervals in the vertical direction, and two first inlets 5 and one first outlet 6 are provided on the first reaction channels 3. The cross-sectional area of the first outlet 6 is greater than the cross-sectional area of the first inlet 5. The plurality of second reaction channels 4 are arranged at intervals along the vertical direction, two second outlets 8 and one second inlet 7 are arranged on the second reaction channels 4, and the cross sectional area of the second outlets 8 is smaller than that of the second inlets 7. The second reaction channels 4 are arranged in a stacked and staggered manner with the first reaction channels 3, the first inlet 5 of the middle first reaction channel 3 is communicated with the second outlet 8 on the upper second reaction channel 4, and the first outlet 6 of the middle first reaction channel 3 is communicated with the second inlet 7 on the lower second reaction channel 4, so that the stacked first reaction channel 3 is communicated with the second reaction channel 4. The junction of the second inlet 7 and the main body of the second reaction channel 4 is provided with a transition channel 16, and the cross-sectional area of the transition channel 16 is smaller than that of the second inlet 7 along the flowing direction of the fluid.
The first reaction channel 3 and the second reaction channel 4 are both omega-shaped channels, the omega-shaped channels are variable-inner-diameter channels along the flowing direction of the fluid, and the radial section area of the omega-shaped channels is continuously changed along with the extension of the channels, so that the speed of the reaction medium is continuously changed when the reaction medium moves in the first reaction channel 3 and the second reaction channel 4, and the collision probability of the reaction medium is increased. The omega-shaped channel comprises an arc-shaped main body part and two connecting parts arranged at the end part of the arc-shaped main body part, the first outlet 6 and the second inlet 7 are arranged in a cavity formed by the arc-shaped main body part in a surrounding manner, and the first inlet 5 and the second outlet 8 are arranged at the connecting parts. As shown in fig. 2, the first reaction channel 3 and the second reaction channel 4 are provided in two rows in the horizontal direction, and a communication channel is provided on the arc-shaped main body portion of the second reaction channel 4 to communicate two second reaction channels 4 adjacent to each other in the horizontal direction.
By utilizing the end-to-end and laminated arrangement of the first reaction channel 3 and the second reaction channel 4, a plurality of reaction media jointly enter the first reaction channel 3, are mixed and then flow to the second inlet 7 through the first outlet 6 and enter the transition channel 16 in the next layer, and because the transition channel 16 is arranged from the main body part of the second reaction channel 4 to the direction of the second outlet 8, the flow direction of the reaction media flowing from the first reaction channel 3 to the first outlet 6 is opposite to the flow direction of the reaction media flowing into the transition channel 16, so that the reaction media violently collide with the inner wall of the channel when entering the transition channel 16. Meanwhile, as the cross-sectional area of the transition passage 16 is smaller than that of the second inlet 7 along the flowing direction of the fluid, the flow velocity of the reaction medium is instantly increased after the reaction medium is violently collided by the passage, the collision strength of the reaction medium is increased, and the mixing degree of the reaction medium is further enhanced. The reaction medium is divided into two parts after passing through the transition channel 16, and the two parts enter into another first reaction channel 3 through different second outlets 8 respectively, and the reaction medium entering into the first reaction channel 3 from the two first inlets 5 flows to the first outlet 6 together to be converged into one part and then enters into the next second reaction channel 4. The reaction medium is divided after being continuously combined, and is combined after being divided, and the instantaneous reversal and flow rate increase of the flow direction of the reaction medium, which are accompanied by the upward and downward surge and the utilization of the transition channel 16, can effectively improve the mixing effect of the reaction medium in the micro-channel, further improve the reaction yield, reduce the waste of raw materials and improve the production yield.
As an alternative embodiment, as shown in fig. 10, the first reaction channel 3 and the second reaction channel 4 are each provided with four rows in the horizontal direction, and a communication channel is provided between two adjacent second reaction channels 4 in the horizontal direction to communicate all of the four second reaction channels 4.
As an alternative embodiment, two second reaction channels 4 adjacent in the horizontal direction are arranged tangentially, and the two second reaction channels 4 are directly communicated at the tangential position.
Example 2
As shown in fig. 1 to 6, the present embodiment provides a microchannel reaction assembly having the microchannel structure described in embodiment 1. As shown in fig. 3, the device comprises a first mixing channel and a second mixing channel which are arranged in a stacked manner, and each of the first mixing channel and the second mixing channel comprises a plurality of groups of first reaction channels 3 and second reaction channels 4 which are alternately arranged at intervals. In this embodiment, each group of the first reaction channels 3 includes two rows of the first reaction channels 3, and each group of the second reaction channels 4 includes two rows of the second reaction channels 4. The first outlets 6 on the first mixing channel are communicated with the second inlets 7 on the second mixing channel in a one-to-one correspondence manner, the first inlets 5 on the first mixing channel are communicated with the second outlets 8 on the second mixing channel in a one-to-one correspondence manner, and the first reaction channels 3 on the first mixing channel in the same direction and the second reaction channels 4 on the second mixing channel in the corresponding direction are arranged in an opposite direction and in a staggered manner, so that the first mixing channel is completely communicated with the second mixing channel.
The first mixing channel is formed on the first reaction plate 1, the second mixing channel is formed on the second reaction plate 2, and the first reaction plate 1 and the second reaction plate 2 are spliced in a laminated mode. A partition 17 is provided between the first reaction plate 1 and the second reaction plate 2. As shown in fig. 4, a plurality of auxiliary channels are vertically disposed on the partition 17, and the auxiliary channels are respectively installed corresponding to the first inlet 5, the first outlet 6, the second inlet 7 and the second outlet 8 of the first reaction plate 1, so as to correspondingly connect the first mixing channel and the second mixing channel of the first reaction plate 1 and the second reaction plate 2. As shown in fig. 5, two reaction medium inlets 9 are provided on the first reaction plate 1, and the two reaction medium inlets 9 are communicated with the two first inlets 5 on the first reaction channel 3 on the upper right corner of the second reaction plate 2 through the auxiliary channel after respectively flowing through a section of channel. As shown in fig. 6, a reaction medium outlet 10 is provided on the second reaction plate 2, and the reaction medium outlet 10 is communicated with the first outlets 6 of the two first reaction channels 3 at the upper left corner of the second reaction plate 2.
The first mixing channel and the second mixing channel are formed by arranging a plurality of groups of micro-channel structures at intervals, so that the reaction medium repeatedly passes through the first mixing channels and the second mixing channels, and the path length of the reaction medium flowing through is increased. Increase the length of time that reaction medium mixes when reinforcing reaction medium collision strength, increase reaction medium's mixed effect, improve reaction yield, reduce the surplus rate of raw materials, and then reduce the waste of reaction raw materials, improve the production income.
As an alternative embodiment, both the first mixing channel and the second mixing channel are formed on the same single plate. Two reaction medium inlets 9 are arranged on the first mixing channel, and the reaction medium inlets 9 are communicated with the same group of first reaction channels 3 arranged at the rightmost side of the single plate.
Example 3
As shown in fig. 1 to 9, the present embodiment provides a microchannel reactor having the microchannel reactor assembly described in embodiment 2. As shown in fig. 9, heat exchange assemblies are stacked on both sides of the microchannel reaction assembly, and each heat exchange assembly includes a heat exchange plate 11 and side plates 12 stacked on both sides of the heat exchange plate 11. As shown in fig. 7, a heat exchange medium inlet 13 and a heat exchange medium outlet 14 are provided on the heat exchange plate 11, and a heat exchange flow channel 15 is provided between the heat exchange medium inlet 13 and the heat exchange medium outlet 14. As shown in fig. 8, the side plate 12 is provided with openings corresponding to the heat exchange medium inlet 13, the heat exchange medium outlet 14, the reaction medium inlet 9, and the reaction medium outlet 10. The temperature of the medium in the microchannel reaction assembly between the pair of heat exchange assemblies is controlled by introducing the heat exchange medium into the heat exchange flow channel 15, so that the reaction medium mixed in the microchannel reaction assembly can participate in the reaction at a proper temperature.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (10)
1. A microchannel structure, comprising:
the device comprises a plurality of first reaction channels (3) which are linearly arranged at intervals along a first direction, wherein at least two first inlets (5) and one first outlet (6) are arranged on the first reaction channels (3);
a plurality of second reaction channels (4) which are arranged at intervals along the first direction, at least two second outlets (8) and a second inlet (7) are arranged on the second reaction channels (4), the second reaction channels (4) and the first reaction channels (3) are arranged in a stacked and staggered manner, the first inlet (5) of the first reaction channel (3) is communicated with the second outlet (8) of the previous second reaction channel (4), the first outlet (6) of the first reaction channel (3) is communicated with the second inlet (7) on the second reaction channel (4), a transition channel (16) is arranged at the joint of the second inlet (7) and the main body of the second reaction channel (4), and along the flowing direction of the fluid, the cross-sectional area of the transition channel (16) is smaller than the cross-sectional area of the second inlet (7).
2. The microchannel structure of claim 1, wherein the first reaction channel (3) and the second reaction channel (4) are both omega-shaped channels, the omega-shaped channels comprise an arc-shaped main body part and two connecting parts arranged at the end parts of the arc-shaped main body part, the first outlet (6) and the second inlet (7) are both arranged in a cavity enclosed by the arc-shaped main body part, and the first inlet (5) and the second outlet (8) are both arranged at the connecting parts.
3. The microchannel structure of claim 2, wherein the first reaction channel (3) and the second reaction channel (4) are arranged in a plurality of rows in a second direction perpendicular to the first direction, and two adjacent second reaction channels (4) in the second direction are arranged to communicate with each other.
4. The microchannel structure of claim 3 wherein a communication channel for communicating two adjacent second reaction channels (4) is provided on the arc-shaped main body portion.
5. A microchannel reactor assembly having the microchannel structure of any one of claims 1 to 4.
6. The microchannel reactor assembly of claim 5, comprising a first mixing channel and a second mixing channel arranged in a stack, the first mixing channel and the second mixing channel comprise a plurality of groups of the first reaction channel (3) and the second reaction channel (4) which are alternately arranged at intervals, the first outlets (6) on the first mixing channel are communicated with the second inlets (7) on the second mixing channel in a one-to-one correspondence manner, the first inlets (5) on the first mixing channel are communicated with the second outlets (8) on the second mixing channel in a one-to-one correspondence manner, the first reaction channels (3) in the same direction on the first mixing channel and the second reaction channels (4) in the corresponding direction on the second mixing channel are oppositely and alternately arranged, so that the first mixing channel is completely communicated with the second mixing channel.
7. The microchannel reactor assembly of claim 6, wherein the first mixing channel is provided with at least two reaction medium inlets (9), and wherein at least two of the reaction medium inlets (9) are both in communication with the same set of the first reaction channels (3).
8. The microchannel reactor assembly of claim 6 or 7, wherein the first mixing channel and the second mixing channel are both formed on the same single plate.
9. The microchannel reactor assembly of claim 6 or 7, wherein the first mixing channel is formed on a first reactor plate (1) and the second mixing channel is formed on a second reactor plate (2), the first reactor plate (1) and the second reactor plate (2) being joined in a stack.
10. A microchannel reactor having the microchannel reactor assembly of any one of claims 5 to 9.
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| CN114877729A (en) * | 2022-07-12 | 2022-08-09 | 杭州沈氏节能科技股份有限公司 | Micro-channel reactor and welding method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114877729A (en) * | 2022-07-12 | 2022-08-09 | 杭州沈氏节能科技股份有限公司 | Micro-channel reactor and welding method |
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