CN113546590A - Block-hole type silicon carbide microreactor and application thereof - Google Patents
Block-hole type silicon carbide microreactor and application thereof Download PDFInfo
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- CN113546590A CN113546590A CN202110949410.0A CN202110949410A CN113546590A CN 113546590 A CN113546590 A CN 113546590A CN 202110949410 A CN202110949410 A CN 202110949410A CN 113546590 A CN113546590 A CN 113546590A
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- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 title claims abstract description 48
- 229910010271 silicon carbide Inorganic materials 0.000 title claims abstract description 47
- 239000000463 material Substances 0.000 claims abstract description 102
- 239000012530 fluid Substances 0.000 claims abstract description 101
- 238000007789 sealing Methods 0.000 claims abstract description 33
- 239000000758 substrate Substances 0.000 claims abstract description 26
- 238000005192 partition Methods 0.000 claims description 22
- 238000007514 turning Methods 0.000 claims description 14
- 239000011148 porous material Substances 0.000 claims description 9
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 2
- 229910021426 porous silicon Inorganic materials 0.000 claims 1
- 230000004907 flux Effects 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 6
- 239000000126 substance Substances 0.000 abstract description 4
- 238000002955 isolation Methods 0.000 description 10
- 239000011159 matrix material Substances 0.000 description 8
- 239000002253 acid Substances 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 239000003513 alkali Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000005219 brazing Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000002585 base Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000004804 winding 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
-
- 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
- B01J2219/00781—Aspects relating to microreactors
- B01J2219/00788—Three-dimensional assemblies, i.e. the reactor comprising a form other than a stack of plates
- B01J2219/00792—One or more tube-shaped elements
-
- 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
- B01J2219/00781—Aspects relating to microreactors
- B01J2219/00819—Materials of construction
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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
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00781—Aspects relating to microreactors
- B01J2219/00819—Materials of construction
- B01J2219/00824—Ceramic
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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
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00781—Aspects relating to microreactors
- B01J2219/00873—Heat exchange
-
- 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
- B01J2219/00781—Aspects relating to microreactors
- B01J2219/00889—Mixing
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Abstract
The application relates to a block-hole type silicon carbide microreactor and application thereof, relating to the field of chemical heat exchange and comprising a substrate block and a sealing plate; the substrate block is provided with at least one material guide channel for the inlet and outlet of a fluid medium and at least one heat exchange channel for the inlet and outlet of a heat exchange medium; the sealing plate is provided with a plurality of groups of through holes and is hermetically fixed on the substrate block, so that the through holes are communicated with the material guide channel or simultaneously communicated with the material guide channel and the heat exchange channel; block-and-hole silicon carbide microreactors are used for mixing and/or heat exchange of fluid media. The method has the effect of ensuring that the silicon carbide micro-reactor keeps high flux in a high-temperature and high-pressure environment.
Description
Technical Field
The application relates to the field of chemical heat exchange, in particular to a block-hole type silicon carbide microreactor and application thereof.
Background
The micro-reactor is a device which is provided with a large number of micron-sized channels on a solid matrix through a precision machining technology. The micro-reactor can be used for mixing fluid media and can also be used for quickly exchanging heat for the fluid media. Among them, the silicon carbide microreactor is often used for mixing and heat exchange of chemical fluid media due to its high heat transfer speed and strong corrosion resistance.
In practical application, the silicon carbide reactor is basically a tubular micro reactor and a plate micro reactor.
With respect to the related art among the above, the inventors consider that the following drawbacks exist: the tubular micro-reactor has poor high temperature and high pressure resistant effects, and the plate micro-reactor has limited flux; in practical applications, operators often increase the number of microreactors to meet reaction requirements, which greatly increases the cost of maintaining the reaction.
Disclosure of Invention
In order to solve the problem that a common microreactor is difficult to maintain high flux under high temperature and high pressure, the application provides a block-hole type silicon carbide microreactor and application thereof.
In a first aspect, the block-and-hole silicon carbide microreactor provided by the application adopts the following technical scheme:
a block-hole type silicon carbide micro-reactor comprises a substrate block and a sealing plate; the substrate block is provided with at least one material guide channel for the inlet and outlet of a fluid medium and at least one heat exchange channel for the inlet and outlet of a heat exchange medium; the sealing plate is provided with a plurality of groups of through holes and is hermetically fixed on the substrate block, so that the through holes are communicated with the material guide channel or simultaneously communicated with the material guide channel and the heat exchange channel.
By adopting the technical scheme, the substrate block and the sealing plate made of the silicon carbide material have stable structures and strong high-temperature and high-pressure tolerance and can be stably applied in severe environments; meanwhile, the sealing plate is simple to package relative to the matrix block, and the operation of introducing a fluid medium into the matrix block through the through hole is simple for an operator; after packaging, the sealing pressure of the sealing plate and the substrate block is high, so that the mixing and heat exchange stability of a fluid medium in equipment can be guaranteed; in addition, the substrate block and the sealing plate made of the silicon carbide material have strong acid and alkali resistance, and are suitable for introducing high-acid and high-alkali chemical fluid media for mixing and heat exchange; the inner diameter of the material guide channel can be adjusted to a large size according to application requirements, and the requirement for expanding the flux of the fluid medium in the material guide channel is met.
Preferably, the substrate block comprises a reaction block and a side plate; the heat exchange channel and the material guide channel are both arranged on the reaction block, the sealing plate is fixed on one side of the reaction block in a sealing mode, and the side plate is fixed on one side, far away from the sealing plate, of the reaction block in a sealing mode.
By adopting the technical scheme, the snakelike spiral material guide channel has large specific surface area, the contact area with the heat exchange channel is also greatly increased, and the mixing efficiency and the heat exchange efficiency of the fluid medium in the reaction block are improved; the side plates and the sealing plates are used for sealing the transfer grooves and the reversing grooves, so that the circulation stability and efficiency of fluid media in the material guide channel can be guaranteed.
Preferably, the material guide channel is linear, spiral or groove type.
By adopting the technical scheme, the linear material guide channel is convenient for the fluid medium to rapidly pass through, and the heat exchange efficiency of the fluid medium in the reaction block can be ensured by the characteristic of large specific surface area of the material guide channel; the spiral and groove type material guide channels prolong the length of the flow channel, so that the heat exchange time of the fluid medium and the heat exchange medium is prolonged, and the heat exchange efficiency of the equipment on the fluid medium is improved; in addition, the flow speed of the fluid medium in the flow channel is reduced through the spiral groove and the step groove, and the flow stability of the fluid medium in the material guide channel is improved.
Preferably, the arrangement directions of the material guide channel and the heat exchange channel are the same or different.
By adopting the technical scheme, the arrangement directions of the material guide channels and the heat exchange channels are different, the number of the heat exchange channels is far more than that of the material guide channels, and flowing heat exchange media can be continuously introduced into each heat exchange channel, so that the heat exchange efficiency and speed of the reaction blocks to the fluid media are improved; in addition, the through holes of the sealing plates are only filled with fluid media, so that the operation is simple, and the phenomenon that the heat exchange media are filled into the material guide channels by mistake is not easy to occur; the arrangement directions of the material guide channels and the heat exchange channels are the same, the number of the heat exchange channels and the number of the material guide channels are balanced, and all the flow channels of the heat exchange channels and the flow channels of the heat exchange channels are in a mutually parallel state, so that the fluid medium and the heat exchange medium are easy to fully exchange heat, and the heat exchange efficiency of the fluid medium in the reaction block is guaranteed; in addition, the space utilization rate in the reaction block is high, and the phenomenon of redundant holes is reduced.
Preferably, the material guide channel and the heat exchange channel comprise a plurality of flow channels, and all the flow channels on the same plane form a group of runners; two adjacent runners are communicated through the switching grooves, and two adjacent groups of runners are communicated through the reversing grooves.
By adopting the technical scheme, all the runners form the material guide channel and the heat exchange channel together, the switching grooves realize the communication of the adjacent runners, the reversing grooves realize the communication of the adjacent runners, and the smooth circulation of the heat exchange medium and the fluid medium on the reaction block is ensured.
Preferably, a plurality of groups of turning grooves are arranged on the side wall of the reaction block, and the turning grooves are used for being connected with different lanes of the material guide channel in parallel and/or different lanes of the heat exchange channel in parallel.
By adopting the technical scheme, when the steering grooves are used for connecting two or more groups of reversing grooves, the fluid medium can conveniently enter a plurality of groups of reversing grooves at the same time, so that the upper and lower adjacent lanes are connected in parallel at the same time, the speed of the fluid medium entering the material guide channel is increased, and the mixing and heat exchange efficiency of the device on the fluid medium is improved; when the turning grooves can be used for connecting a group of reversing grooves, the inner diameter size of the reversing grooves is increased, so that heat exchange media in the through holes can be abutted into the independent reversing grooves and quickly distributed into the upper and lower adjacent lanes, and the introduction speed of the heat exchange media in the heat exchange channels is increased.
Preferably, the reaction block is provided with at least one group of inner members for reducing the flow velocity of the fluid medium in the material guide channel, and the inner members are in interference fit between the side plates and the closing plates.
By adopting the technical scheme, the inner member is used for slowing down the flow speed of the fluid medium in the material guide channel; the inner member tightly propped between the side plate and the sealing plate is used for reducing the phenomena of loose shaking and deflection of the inner member in the material guide channel, and is beneficial to improving the flow stability of the fluid medium in the material guide channel.
Preferably, the inner member comprises an orientation post and a plurality of insulation panels; all the isolation plates are distributed at the outer edge of the directional column at intervals, and at least one group of through holes for the fluid medium to pass through is arranged on the outer side wall of each isolation plate in a penetrating way; the through holes in the adjacent isolation plates are staggered, and the through holes in the isolation plates which are distributed at intervals are symmetrical.
By adopting the technical scheme, the partition plates are used for blocking the fluid medium, the through holes are convenient for the fluid medium to pass through the partition plates, and the plurality of partition plates block the fluid medium layer by layer, so that the flowing speed of the fluid medium in the material guide channel is effectively reduced, and the fluid medium can fully exchange heat; the through holes on the adjacent partition plates are staggered with each other, so that the fluid medium can pass through the through holes after flowing along the periphery of the directional column, and the speed of the fluid medium is further reduced; the through holes on the partition plates distributed at intervals are mutually symmetrical, so that the fluid medium regularly advances between the partition plates, and the flow stability of the fluid medium is guaranteed.
Preferably, the outer edges of all the partition plates are in interference fit with the inner side wall of the material guide channel.
Through adopting above-mentioned technical scheme, the location stability of internals in the guide passageway has further been improved to the division board of butt in the guide passageway inside wall, and then has further ensured the circulation stability of fluid medium in the guide passageway.
In a second aspect, the application of the block-hole silicon carbide microreactor provided by the application adopts the following technical scheme:
use of a block-and-hole silicon carbide microreactor according to any of claims 1 to 9 for mixing and/or heat exchange of a fluid medium.
By adopting the technical scheme, the equipment can be used for quickly and efficiently mixing and heating different fluid media or exchanging heat of a single fluid medium by an operator.
In summary, the present application has the following beneficial technical effects:
1. the material guide channel arranged on the substrate block has a stable structure, can be used for mixing and heat exchange of strong acid or strong base fluid materials in a high-temperature and high-pressure environment, and has high application stability; in addition, the inner diameter of the material guide channel can be adjusted to be large, so that the flux of the material guide channel is increased;
2. the inner member slows down the flowing speed of the fluid medium in the material guide channel, so that the fluid medium and the heat exchange medium exchange heat fully; in addition, the fluid medium is enabled to regularly advance to the inner cavity of the material guide channel by blocking the fluid medium by the plurality of groups of partition plates, so that the flow stability of the fluid medium in the material guide channel is guaranteed;
3. the steering grooves can be connected with a plurality of groups of reversing grooves, so that a plurality of groups of up-and-down adjacent lanes are mutually connected in parallel, and the fluid medium can simultaneously prop into the plurality of groups of lanes to circulate through the reversing grooves, thereby improving the introduction efficiency of the fluid medium in the material guide channel.
Drawings
Fig. 1 is a schematic structural view of a block-and-hole silicon carbide microreactor according to example 1 of the present application;
FIG. 2 is a schematic view showing the positional relationship of a sealing plate, a side plate and a reaction block in example 1;
FIG. 3 is a schematic sectional view in a horizontal direction showing the positional relationship between the material guiding passage and the heat exchanging passage in example 1;
fig. 4 is a schematic vertical sectional view showing the connection relationship between the adjacent flow passages of the guide cylinder in embodiment 1;
FIG. 5 is a schematic structural view of a matrix block in a block-and-hole silicon carbide microreactor according to example 2;
FIG. 6 is a schematic sectional view in a horizontal direction showing the positional relationship between a material-guiding passage and a substrate block in example 2;
FIG. 7 is a schematic structural view of a block-and-hole silicon carbide microreactor according to example 3;
FIG. 8 is a schematic structural view of a block-and-hole silicon carbide microreactor according to example 4;
FIG. 9 is a schematic view showing the positional relationship of a diverting groove and a reversing groove on a reaction block in example 4;
FIG. 10 is a schematic vertical sectional view of a screw-type material-guiding channel in a block-and-hole silicon carbide microreactor according to example 5;
FIG. 11 is a schematic vertical sectional view of a channel-type guide channel in a block-and-hole silicon carbide microreactor according to example 6;
FIG. 12 is a schematic view showing the connection relationship between the internals and the reaction blocks in a block-and-hole silicon carbide microreactor according to example 7;
FIG. 13 is a schematic view showing the positional relationship between the separator and the alignment pins in example 7.
Description of reference numerals:
1. a matrix block; 11. a reaction block; 111. a transfer groove; 112. a reversing slot; 113. a steering groove; 12. a side plate;
2. closing the plate; 21. a through hole;
3. a material guide channel; 31. a flow channel; 32. a lane; 33. a spiral groove; 34. a step groove;
4. a heat exchange channel;
5. a flow guide unit;
6. an inner member; 61. a directional column; 62. a separator plate; 621. and (4) a through hole.
Detailed Description
The embodiment of the application discloses a block-hole type silicon carbide microreactor. The bulk-pore silicon carbide microreactor can be used for mixing different fluid media and exchanging heat for a single fluid medium. Meanwhile, the block-hole silicon carbide microreactor can also mix different fluid media and exchange heat for the mixed fluid media.
The present application is described in further detail below with reference to figures 1-13.
Example 1
Referring to fig. 1 and 2, a block-hole silicon carbide microreactor includes a substrate block 1 and a cover plate 2. The matrix block 1 is made of silicon carbide through high-temperature sintering, the matrix block 1 comprises a reaction block 11, and the reaction block 11 is rectangular.
Referring to fig. 2 and 3, a plurality of heat exchange channels 4 are arranged on the opposite side walls of the reaction block 11 in a penetrating manner, all the heat exchange channels 4 are parallel to each other, a heat exchange medium can be introduced into each heat exchange channel 4, and the heat exchange medium enters from one end of each heat exchange channel 4 and exits from the other end of the heat exchange channel 4.
Referring to fig. 2 and 4, a material guide passage 3 is distributed in a serpentine shape on the reaction block 11. In this embodiment, the material guiding passage 3 is a linear passage, and the cross section of the linear material guiding passage 3 in the vertical direction is circular. Each of the guide channels 3 includes a plurality of flow passages 31 parallel to each other, and each of the flow passages 31 penetrates through opposite side walls of the reaction block 11. In this embodiment, the material guiding channel 3 and the heat exchanging channel 4 are arranged in different directions and are crossed. All the flow channels 31 form a plurality of sets of mutually parallel channels 32 on the reaction block 11, and the adjacent channels 32 are distributed at intervals along the height direction of the reaction block 11.
Referring to fig. 2 and 4, a plurality of sets of transition grooves 111 are arranged at intervals on the outer side wall of the reaction block 11, and the transition grooves 111 are used for connecting all the flow channels 31 in the same row 32 in series. In this embodiment, the number of the transfer slots 111 may be N, the first group of the transfer slots 111 is correspondingly distributed at one end of the first flow channel 31 and the second flow channel 31 in the length direction, the second group of the transfer slots 111 is correspondingly distributed at one end of the second flow channel 31 and the third flow channel 31 far away from the first group of the transfer slots 111, and the third group of the transfer slots 111 is correspondingly distributed at one end of the third flow channel 31 and the fourth flow channel 31 far away from the second group of the transfer slots 111, so as to circulate.
Referring to fig. 2 and 4, the outer side wall of the reaction block 11 is further provided with a plurality of sets of reversing grooves 112 at intervals, and the reversing grooves 112 are used for connecting all the flow channels 31 in different flow channels 32. In this embodiment, the number of the reversing slots 112 may be N, the first group of the reversing slots 112 is connected to the two flow channels 31 at the same end of the first row 32 and the second row 32 in the length direction on one side of the reaction block 11, the second group of the reversing slots 112 is connected to the two flow channels 31 at the same end of the second row 32 and the third row in the length direction on the other side of the reaction block 11, and the second group of the reversing slots 112 and the first group of the reversing slots 112 are respectively located at two ends of the reaction block 11 in the length direction, so as to circulate.
Referring to fig. 2, the substrate block 1 further includes a side plate 12, the side plate 12 is made of silicon carbide, and the side plate 12 is fixed to one side of the substrate block 1 by brazing to block one end of all the flow channels 31 in the length direction. The sealing plate 2 is also made of silicon carbide, and the sealing plate 2 is fixed to one side of the substrate block 1 away from the side plate 12 by brazing so as to seal the other end of all the flow channels 31 in the length direction. At this time, the adjacent flow passages 31 are connected by the transfer groove 111 and the reversing groove 112, and the sealing plate 2 and the side plate 12 reduce the outward overflow phenomenon when the fluid medium flows through the transfer groove 111 and the reversing groove 112.
Referring to fig. 2, a plurality of sets of through holes 21 are provided on the outer side wall of the sealing plate 2, and in this example, the number of the through holes 21 may be two. One set of through holes 21 corresponds to the flow channel 31 at one end of the highest flow channel 32 in the length direction, so that the fluid medium can be introduced into the material guide channel 3. The other set of through holes 21 corresponds to the flow channel 31 at one end of the length direction of the lowest flow channel 32, so that the fluid medium can be led out. In the process, an operator can introduce a heat exchange medium into the heat exchange channel 4 to realize the effect of heat exchange when the fluid medium passes through the reaction block 11. It should be noted that, an operator can increase the number of the through holes 21 to correspond to different flow channels 31, so that a plurality of different fluid media can enter the material guiding channel 3 at the same time, and further, the effect of mixing and exchanging heat of different fluid media in the reaction block 11 is achieved.
The implementation principle of the block-hole silicon carbide microreactor in the embodiment of the application is as follows:
the fluid medium enters the first flow channel 31 through the through hole 21, and then, the fluid medium sequentially flows into the second flow channel 31 and the third flow channel 31 through the transfer groove 111 until reaching the last flow channel 31 of the same row channel 32. The diverting chute 112 can divert the fluid medium in the previous channel 32 to the flow channel 31 of the next channel 32 to complete the circulation of the fluid medium in the material guiding channel 4. In the process, a continuously flowing heat exchange medium can be introduced into each heat exchange channel 4 to exchange heat with the fluid medium in the material guide channel 3.
Example 2
Referring to fig. 5 and 6, the present embodiment is different from embodiment 1 in that the substrate block 1 is an independent rectangular block, one end of each flow channel 31 away from the sealing plate 2 is located inside the substrate block 1, and a plurality of sets of transition grooves 111 and reversing grooves 112 are further disposed inside the substrate block 1. The switching groove 111 in the substrate block 1 is connected with one end, away from the sealing plate 2, of the adjacent flow channel 31 of the same passage 32, and the reversing groove 112 in the substrate block 1 is connected with one end, away from the sealing plate 2, of the adjacent flow channel 31 of different passages 32.
The implementation principle of the block-hole silicon carbide microreactor in the embodiment of the application is as follows:
the independent matrix block 1 has stable structure, and ensures the circulation stability of fluid media. One end of the flow channel 31, which is far away from the sealing plate 2, is positioned inside the substrate block 1, so that the circulation efficiency of the fluid medium is guaranteed, the investment of the side plate 12 is reduced, the assembly process of the block-hole silicon carbide micro-reactor is simplified, and the production cost is reduced.
Example 3
Referring to fig. 7, the present embodiment is different from embodiment 1 in that the number of the heat exchange channels 4 is one, and the arrangement directions of the heat exchange channels 4 and the material guide channels 3 are the same. The number of the through holes 21 may be four groups.
Referring to fig. 7, in the present embodiment, the heat exchange channels 4 are distributed in a serpentine shape on the reaction block 11 in a manner identical to the material guiding channels 3, and the heat exchange channels 4 are located on the side wall of the reaction block 11 where the material guiding channels 4 are arranged. All the lanes 32 of the guide channel 4 are parallel to all the lanes 32 of the heat exchange channel 4, wherein all the lanes 32 of the guide channel 4 may be odd rows and all the lanes 32 of the heat exchange channel 4 may be even rows. The heat exchange channel 4 is also connected with the adjacent flow channels 31 of the same channel 32 through the switching groove 111, and the heat exchange channel 4 is also connected with the adjacent flow channels 31 above and below different channels 32 through the reversing groove 112.
Referring to fig. 7, two sets of the through holes 21 correspond to the feeding flow path 31 and the discharging flow path 31 of the heat exchange channel 4, and the other two sets of the through holes 21 correspond to the feeding flow path 31 and the discharging flow path 31 of the material guide channel 3.
The implementation principle of the block-hole silicon carbide microreactor in the embodiment of the application is as follows:
fluid medium and heat transfer medium all get into reaction block 11 through-hole 21 inside with the circulation, have simplified operating procedure, have improved operating personnel's simple operation nature. The heat exchange channels 4 and the material guide channels 3 which are parallel to each other enable the fluid medium and the heat exchange medium to exchange heat more easily in the circulation process, and therefore the heat exchange efficiency of the equipment on the fluid medium is improved. Meanwhile, the heat exchange channel 4 and the material guide channel 3 which are arranged on the same side of the reaction block 11 are convenient for quick construction, and the production cost is saved.
Example 4
Referring to fig. 8 and 9, the present embodiment is different from embodiment 3 in that the number of the material guiding channels 4 may be three, and the number of the heat exchanging channels 4 may be three. A plurality of sets of turning grooves 113 are provided on the side wall for the reaction block 11. The number of the through holes 21 can be seven, and seven groups of through holes 21 are also arranged on the side plate 12.
Referring to fig. 9, in the present embodiment, one material guiding channel 4 is parallel to one heat exchanging channel 4, and one material guiding channel 4 and one heat exchanging channel 4 together form one set of flow guiding units 5. The number of the flow guide units 5 can be three, and five-row channels 32 can be arranged in each flow guide unit 5. The lanes 32 of the material guiding channel 4 may be odd rows or three rows, and the lanes 32 of the heat exchanging channel 4 may be even rows or two rows.
Referring to fig. 9, the first and third passages 32 and 32 of the material guiding passage 4 are connected at the same longitudinal ends thereof by a reversing chute 112, and the third and fifth passages 32 and 32 of the material guiding passage 4 are connected at the same longitudinal ends thereof by a reversing chute 112. On the opposite side walls of the reaction block 11, the diverting grooves 112 are also distributed at the material guiding passage 4, except that the diverting grooves 112 at the opposite sides of the reaction block 11 are respectively located at the two ends of the reaction block 11 in the length direction. The third lane 32 of the material guiding passage 4 is connected with the same end of the fifth lane 32 in the length direction through a turning groove 113, and the inner diameter of the turning groove 113 is larger than that of the reversing groove 112, so as to simultaneously include two groups of reversing grooves 112 adjacent to each other up and down.
Referring to fig. 8 and 9, the diversion groove 113 at the heat exchange channel 4 is directly sleeved outside the reversing groove 112 to increase the inner diameter size of the reversing groove 112. In this embodiment, the number of the diversion trenches 113 at the material guide passage 4 is three, and the number of the diversion trenches 113 at the heat exchange passage 4 is four.
Referring to fig. 8, four sets of through holes 21 correspond one-to-one to the four sets of turning grooves 113 at the heat exchange channel 4, and the other three sets of through holes 21 correspond one-to-one to the three sets of turning grooves 113 at the guide channel 3.
The implementation principle of the block-hole silicon carbide microreactor in the embodiment of the application is as follows:
illustrated with a first set of flow guiding cells 5. The fluid medium enters the inner cavity of the diversion grooves 113 at the material guide channel 4 through the through holes 21, and each group of diversion grooves 113 is simultaneously connected with two groups of diversion grooves 112, so that the fluid medium can simultaneously enter the flow channels 31 of the first channel 32, the third channel 32 and the fifth channel 32. The heat exchange medium enters the inner cavity of the turning grooves 113 at the heat exchange channel 4 through the through holes 21, and each group of turning grooves 113 is simultaneously connected with two groups of turning grooves 112, so that the heat exchange medium simultaneously enters the flow channels 31 of the second channel 32 and the fourth channel 32. The process greatly increases the flow of the fluid medium and the heat exchange medium which are introduced into the inner cavity of the reaction block 11 in unit time, and further improves the material flux in the reaction block 11. Meanwhile, the multiple groups of flow guide units 5 feed and discharge materials simultaneously, so that the equipment can mix and exchange heat of multiple groups of materials simultaneously, and the application efficiency of the equipment is improved.
Because the adjacent reversing grooves 112 are located at the same end of different lanes 32 in the length direction, the fluid medium enters the inner cavity of the reaction block 11 from the through hole 21 of the closing plate 2 and is discharged from the through hole 21 of the side plate 12.
Example 5
Referring to fig. 10, the present embodiment is different from embodiment 1 in that the material guiding channel 3 is a spiral channel. The thread type material guiding channel 3 is based on the linear type material guiding channel 3, a spiral groove 33 is arranged on the inner side wall of the material guiding channel 3, and the spiral groove 33 extends along the length direction of the material guiding channel 3.
The implementation principle of the block-hole silicon carbide microreactor in the embodiment of the application is as follows:
the threaded groove enlarges the inner cavity space of the material guide channel 3, so that the quantity of the fluid medium in the inner cavity of the material guide channel 3 is increased, and the flux of the fluid medium in the material guide channel 3 is increased. Meanwhile, the spiral groove 33 advances in a winding manner, so that the circulation speed of the fluid medium in the material guide channel 3 is reduced, and the effect of stabilizing the flow of the fluid medium is achieved. Moreover, the spiral groove 33 prolongs the heat exchange time of the fluid medium and the heat exchange medium, and improves the heat exchange efficiency of the reaction block 11 to the fluid medium.
Example 6
Referring to fig. 11, the difference between the present embodiment and embodiment 1 is that the material guiding channel 3 is a groove-shaped channel. The groove type material guiding channel 3 is based on the linear type material guiding channel 3, a plurality of groups of step grooves 34 are arranged on the inner side wall of the material guiding channel 3, and all the step grooves 34 extend along the length direction of the material guiding channel.
The implementation principle of the block-hole silicon carbide microreactor in the embodiment of the application is as follows:
the stepped groove 34 further increases the inner cavity space of the material guiding channel 3, and reduces the distance between the adjacent heat exchanging channel 4 and the material guiding channel 3, so that the fluid medium is easy to be temporarily accumulated in the stepped groove 34, and the heat exchanging sufficiency of the fluid medium by the heat exchanging medium is ensured. Meanwhile, the stepped groove 34 is easy to absorb and store the flowing fluid medium, so that the impact strength of the fluid medium in the flow passage 31 is greatly reduced, and the stability of the fluid flow is improved.
Example 7
Referring to fig. 12, the present embodiment is different from embodiment 1 in that an inner member 6 is disposed in a material guide channel 3 of a reaction block 11. The number of the inner members 6 may be one or more groups, and in the present embodiment, the number of the inner members 6 may be three groups.
Referring to fig. 12 and 13, the inner member 6 includes an orientation post 61. The adjacent directional columns 61 abut against each other end to end, one directional column 61 at the end abuts against the side wall of the side plate 12 facing the reaction block 11, and the other directional column 61 at the end abuts against the side wall of the closing plate 2 facing the reaction block 11. The inner member 6 further comprises a plurality of partition plates 62, the partition plates 62 are integrally formed with the orientation posts 61, and all the partition plates 62 are equidistantly distributed on the outer edges of the orientation posts 61. The directional column 61 abuts against the inner cavity of the material guiding channel 3, and the side wall of the partition plate 62 far away from the directional column 61 abuts against the inner side wall of the material guiding channel 3.
Referring to fig. 13, at least one set of passing holes 621 is formed through the outer side wall of each partition board 62, in this embodiment, the number of the passing holes 621 on each partition board 62 may be four, and one end of each passing hole 621 far away from the orientation column 61 is provided as an opening. The passing holes 621 on two adjacent partition plates 62 are arranged in a staggered manner, and the passing holes 621 on two partition plates 62 distributed at intervals are symmetrical to each other.
The implementation principle of the block-hole silicon carbide microreactor in the embodiment of the application is as follows:
after passing through the through hole 621 of the first isolation plate 62, the fluid medium is blocked by the second isolation plate 62, and after flowing along the periphery of the directional column 61, the fluid medium can pass through the through hole 621 of the second isolation plate 62 and enter between the second isolation plate 62 and the third isolation plate 62. At this time, the third partition plate 62 again blocks the fluid medium, and the fluid medium can pass through the material guiding passage 4 after continuously turning and passing through the passing hole 621. In the process, the fluid medium is blocked by the isolation plate 62, and the fluid medium is released by the passing holes 621, so that the flow stability of the fluid medium is improved, and the mixing sufficiency of different fluid media is ensured. Meanwhile, the flowing time of the fluid medium in the material guide channel 4 is greatly prolonged, so that the heat exchange between the fluid medium and the heat exchange medium is sufficient, and the heat exchange efficiency of the equipment on the fluid medium is improved.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. A block-hole silicon carbide micro-reactor is characterized in that: comprises a substrate block (1) and a sealing plate (2); the substrate block (1) is provided with at least one material guide channel (3) for the inlet and outlet of a fluid medium and at least one heat exchange channel (4) for the inlet and outlet of a heat exchange medium; the sealing plate (2) is provided with a plurality of groups of through holes (21), and the sealing plate (2) is hermetically fixed on the substrate block (1), so that the through holes (21) are communicated with the material guide channel (3) or simultaneously communicated with the material guide channel (3) and the heat exchange channel (4).
2. The bulk-pore silicon carbide microreactor of claim 1, wherein: the substrate block (1) comprises a reaction block (11) and a side plate (12); the heat exchange channels (4) and the material guide channels (3) are arranged on the reaction block (11), the sealing plate (2) is fixed on one side of the reaction block (11) in a sealing mode, and the side plate (12) is fixed on one side, away from the sealing plate (2), of the reaction block (11) in a sealing mode.
3. The bulk-pore silicon carbide microreactor of claim 1, wherein: the material guide channel (3) is linear, spiral or groove type.
4. The bulk-pore silicon carbide microreactor of claim 2, wherein: the arrangement directions of the material guide channel (3) and the heat exchange channel (4) are the same or different.
5. The bulk-pore silicon carbide microreactor of claim 1, wherein: the material guide channel (3) and the heat exchange channel (4) comprise a plurality of runners (31), and all the runners (31) on the same plane form a group of runners (32); two adjacent runners (31) are communicated through a switching groove (111), and two adjacent groups of runners (32) are communicated through a reversing groove (112).
6. The bulk-pore silicon carbide microreactor of claim 5, wherein: the side wall of the reaction block (11) is provided with a plurality of groups of turning grooves (113), and the turning grooves (113) are used for being connected with different lanes (32) of the material guide channel (3) in parallel and/or different lanes (32) of the heat exchange channel (4) in parallel.
7. The bulk-pore silicon carbide microreactor of claim 5, wherein: the reaction block (11) is provided with at least one group of inner components (6) used for reducing the flow velocity of fluid media in the material guide channel (3), and the inner components (6) are in interference fit between the side plates (12) and the closing plates (2).
8. The bulk-pore silicon carbide microreactor of claim 7, wherein: the inner member (6) comprises an orientation post (61) and a plurality of insulation panels (62); all the partition plates (62) are distributed at the outer edge of the directional column (61) at intervals, and at least one group of through holes (621) for fluid media to pass through are arranged on the outer side wall of each partition plate (62) in a penetrating manner; the through holes (621) on the adjacent partition plates (62) are staggered, and the through holes (621) on the partition plates (62) which are distributed at intervals are symmetrical to each other.
9. The bulk-pore silicon carbide microreactor of claim 8, wherein: the outer edges of all the partition plates (62) are in interference fit with the inner side wall of the material guide channel (3).
10. Use of a bulk-porous silicon carbide microreactor according to any of claims 1 to 9, wherein: the block-hole silicon carbide microreactor is used for mixing and/or heat exchange of fluid media.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110949410.0A CN113546590A (en) | 2021-08-18 | 2021-08-18 | Block-hole type silicon carbide microreactor and application thereof |
| PCT/CN2021/124995 WO2023019718A1 (en) | 2021-08-18 | 2021-10-20 | Block-hole type silicon carbide microreactor and use thereof |
| DE112021000133.7T DE112021000133T5 (en) | 2021-08-18 | 2021-10-20 | Block hole silicon carbide microreactor and its use |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110949410.0A CN113546590A (en) | 2021-08-18 | 2021-08-18 | Block-hole type silicon carbide microreactor and application thereof |
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| CN113546590A true CN113546590A (en) | 2021-10-26 |
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| CN202110949410.0A Pending CN113546590A (en) | 2021-08-18 | 2021-08-18 | Block-hole type silicon carbide microreactor and application thereof |
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| Country | Link |
|---|---|
| CN (1) | CN113546590A (en) |
| DE (1) | DE112021000133T5 (en) |
| WO (1) | WO2023019718A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115784748A (en) * | 2023-02-06 | 2023-03-14 | 南通三责精密陶瓷有限公司 | Preparation method of gel injection mold for block-hole silicon carbide ceramic microreactor |
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| CN103007853A (en) * | 2011-09-23 | 2013-04-03 | 中国科学院大连化学物理研究所 | Silicon carbide micro-channel reactor and application thereof in preparing low carbon olefin from hydrocarbons cracking |
| CN109464973B (en) * | 2018-12-19 | 2024-03-08 | 上海璨谊生物科技有限公司 | Microchannel module |
| CN110860263B (en) * | 2019-12-27 | 2024-06-25 | 西部金属材料股份有限公司 | High-efficiency reactor |
| CN111389325A (en) * | 2020-04-30 | 2020-07-10 | 山东微井化工科技股份有限公司 | Novel micro-channel reactor |
| CN112403413B (en) * | 2020-09-29 | 2023-04-07 | 合肥通用机械研究院有限公司 | Integrated countercurrent strengthening microreactor |
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2021
- 2021-08-18 CN CN202110949410.0A patent/CN113546590A/en active Pending
- 2021-10-20 DE DE112021000133.7T patent/DE112021000133T5/en active Pending
- 2021-10-20 WO PCT/CN2021/124995 patent/WO2023019718A1/en unknown
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| EP2431700A2 (en) * | 2010-09-17 | 2012-03-21 | Karlsruher Institut für Technologie | Cross-flow micro heat exchanger |
| CN103764255A (en) * | 2011-08-24 | 2014-04-30 | 康宁股份有限公司 | Thermally integrated adsorption-desorption systems and methods |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2023019718A1 (en) | 2023-02-23 |
| DE112021000133T5 (en) | 2023-04-06 |
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