CN116808972A - Microchannel reactor and method - Google Patents
Microchannel reactor and method Download PDFInfo
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- CN116808972A CN116808972A CN202310750557.6A CN202310750557A CN116808972A CN 116808972 A CN116808972 A CN 116808972A CN 202310750557 A CN202310750557 A CN 202310750557A CN 116808972 A CN116808972 A CN 116808972A
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- 238000000034 method Methods 0.000 title claims abstract description 8
- 239000012530 fluid Substances 0.000 claims abstract description 150
- 239000000463 material Substances 0.000 claims abstract description 94
- 238000009826 distribution Methods 0.000 claims abstract description 65
- 238000006243 chemical reaction Methods 0.000 claims abstract description 40
- 239000011148 porous material Substances 0.000 claims abstract description 4
- 239000007788 liquid Substances 0.000 claims description 21
- 229920002943 EPDM rubber Polymers 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
- 239000000741 silica gel Substances 0.000 claims description 3
- 229910002027 silica gel Inorganic materials 0.000 claims description 3
- 239000003054 catalyst Substances 0.000 abstract description 3
- 230000010354 integration Effects 0.000 abstract description 3
- 238000006722 reduction reaction Methods 0.000 abstract description 3
- 238000011031 large-scale manufacturing process Methods 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 67
- 239000012295 chemical reaction liquid Substances 0.000 description 4
- 239000007789 gas Substances 0.000 description 3
- 239000012071 phase Substances 0.000 description 3
- 238000010146 3D printing Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000376 reactant Substances 0.000 description 2
- 239000011541 reaction mixture Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012824 chemical production Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 239000011344 liquid material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 239000012495 reaction gas Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
The invention discloses a microchannel reactor and a method, which relate to the technical field of chemical reaction equipment and solve the technical problems that when the traditional reaction kettle is used for a catalyst reduction reaction, channels are narrow and easy to block, large-scale production is difficult to realize, and the design and integration are difficult, and the requirements on cold and heat exchange generated during the reaction are high, and the microchannel reactor comprises a shell of the reactor, a first feed inlet is arranged at the top end of the shell, a plurality of layers of fluid material distribution plates are arranged at the middle end of the shell, a discharge outlet is arranged at the bottom end of the shell, and the fluid material distribution plates are arranged from top to bottom: the first fluid material distribution plate comprises a plurality of first through holes, and each first through hole is provided with a first fluid hose which can penetrate through the lower layer through hole; and so on: the pore diameters of the lower layer through holes are larger than those of the upper layer through holes, and the number of the lower layer through holes is consistent; one end of the upper layer fluid hose is connected with the upper layer through hole, and the other end of the upper layer fluid hose is nested at the middle upper part of the lower layer fluid hose through the lower layer through hole; a feed inlet is arranged between two adjacent layers of fluid material distribution plates; the fluid hose is made of flexible material.
Description
Technical Field
The invention relates to the field of chemical reaction equipment, in particular to the technical field of a micro-channel reactor.
Background
The gas-liquid reaction and the liquid-liquid reaction belong to common reactions in the chemical production process, the gas-liquid reaction generally occurs in a reaction kettle, and the principle of the gas-liquid reaction is that reaction gas and reaction liquid are fully contacted, and under certain reaction conditions, the gas-liquid reaction occurs to generate a target compound. The gas phase material is introduced into the bottom of the reaction vessel through the air inlet pipeline and is stirred by the stirring paddle, so that the gas phase material and the liquid phase material are uniformly mixed for reaction.
The reaction kettle is a common chemical equipment and comprises a barrel, a cavity is arranged in the barrel, a stirrer is arranged in the cavity, a gas phase introduction port and a liquid phase introduction port are arranged on the barrel, and a jacket is arranged on some reaction kettles for heating and cooling the barrel. During operation, reactants are introduced into the cavity of the cylinder body, and the reactants are promoted to fully react by stirring, so that a preset target product is obtained.
However, when the existing reaction kettle is used for the reduction reaction of the catalyst, the outlet channel is often narrow and easy to block, the mass production is difficult to realize, the design and the integration are difficult, and the requirement on the cold and heat exchange generated during the reaction is high.
Disclosure of Invention
The invention aims at: the micro-channel reactor aims to solve the problems that when the existing reaction kettle is used for a catalyst reduction reaction, channels are narrow and easy to block, mass production is difficult to realize, design and integration are difficult, and the requirement on cold and heat exchange generated during the reaction is high.
The invention adopts the following technical scheme for realizing the purposes:
a microchannel reactor comprises a shell of the reactor, a first feed inlet arranged at the top end of the shell, a multi-layer fluid material distribution plate arranged at the middle end of the shell, a discharge outlet arranged at the bottom end of the shell,
the fluid material distribution plate is arranged from top to bottom:
the first fluid material distribution plate comprises a plurality of first through holes, and each first through hole is provided with a first fluid hose which can penetrate through the lower layer through hole;
and so on: the pore diameters of the lower layer through holes are larger than those of the upper layer through holes, and the number of the lower layer through holes is consistent; one end of the upper layer fluid hose is connected with the upper layer through hole, and the other end of the upper layer fluid hose is nested at the middle upper part of the lower layer fluid hose through the lower layer through hole; a feed inlet is arranged between two adjacent layers of fluid material distribution plates;
the fluid hose is made of flexible material.
As an optional technical scheme, the first through holes on the first fluid material distribution plate are uniformly arranged, and each upper through hole and each lower through hole are concentric holes with different diameters.
As an optional technical scheme, each layer of fluid hose is detachably connected with the through hole of the layer through a connecting port of the layer, and the connecting port is arranged at the bottom of the through hole of the layer.
As an optional technical scheme, the tail end of each fluid hose is a normally closed liquid locking port, and when no fluid passes through, the tail end is closed, and when the fluid passes through, the tail end is open.
As an alternative technical scheme, the other end of the upper layer fluid hose is nested in the middle upper part of the lower layer fluid hose, the nesting length of the upper layer fluid hose is X, the lengths of the tail end of the upper layer fluid hose and the tail end of the lower layer fluid hose are 1.5X-2X, wherein X is a natural number larger than 200, and the length unit is mm.
As an alternative solution, the flexible material includes ethylene propylene diene monomer, expanded silica gel, and PTFE.
As an optional technical scheme, the number of the fluid material distribution plates is 2, and a second feeding port is arranged between the first fluid material distribution plate and the first fluid material distribution plate.
As an optional technical scheme, a conical diversion bucket is arranged between the bottom fluid material distribution plate and the discharge port, and a plurality of diversion holes are formed in the conical diversion bucket.
As an alternative technical scheme, the second layer of fluid material distributing plate, the distribution holes of the conical distribution hopper are distributed in a mode of increasing from bottom to top.
A method of using a microchannel reactor comprising the steps of:
step one, a step one; the device comprises two or more fluid materials, wherein a first fluid material is pressed into the upper part of a first fluid material distribution plate through a first feeding hole;
step two: under the pressure, the first fluid material is uniformly distributed on the first fluid material distribution plate and then flows into the first fluid hose through the corresponding inflow first through hole;
step three: the second fluid material is pressed into the upper part of the second fluid material distribution plate through the second feeding hole;
step four: under the pressure, the second material is uniformly distributed on the second fluid material distribution plate and then flows into the second fluid hose through the corresponding inflow second through holes;
step five: repeating the third and fourth steps until all fluid materials are added, wherein the other end of the upper layer fluid hose is nested at the middle upper part of the lower layer fluid hose, the nested length of the upper layer fluid hose is X, the lengths of the tail ends of the upper layer fluid hose and the lower layer fluid hose are 1.5X-2X, and the X is a natural number and the length unit is mm;
step six: the mixed liquid after the mixing reaction of the fluid hose at the bottommost layer flows into a conical diversion bucket, and a diversion hole is formed in the conical diversion bucket and flows to a discharge hole through the diversion hole.
The beneficial effects of the invention are as follows:
1. the upper and lower two-layer fluid material distribution plates can uniformly distribute the reaction materials by distributing the flow velocity of the liquid under pressure, and the front section is provided with pressure to convey the materials, and the rear-end reaction liquid enters a turbulent flow reaction section (the turbulent flow reaction section is arranged between the tail end of an upper-layer fluid hose and the tail end of a lower-layer fluid hose) after being distributed, so that the high-efficiency reaction can be carried out in the microchannel reactor due to the formation of the turbulent flow of the liquid, thereby achieving the purpose.
2. The first through holes on the first fluid material distribution plate are uniformly arranged, each upper through hole and each lower through hole are concentric holes with different diameters, corresponding dimensional changes are made according to pressure changes according to actual use scenes, and the corresponding dimensional changes are matched with turbulence reaction self-adaptive adjustment and are realized through 3D printing.
3. The adopted flexible material has good anti-scaling performance, so the equipment designed by the scheme has the functions of good cleaning-free and maintenance-free performance, and simultaneously meets the requirement of non-corrosion resistance.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of a fluid material distribution plate according to the present invention;
FIG. 3 is a schematic view of the end structure of the present invention;
fig. 4 is a schematic view of the bottom structure of the present invention.
Reference numerals: 1-a housing, 2-a first fluid material distribution plate, 21-a first through hole, 22-a first connection port, 23-a first fluid hose, 3-a second fluid material distribution plate, 31-a second through hole, 32-second connector, 33-second fluid hose, 4-toper reposition of redundant personnel fill, 41-reposition of redundant personnel hole, 5-discharge gate, A1-first feed inlet, A2-second feed inlet.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
Referring to fig. 1, the present embodiment provides a microchannel reactor, which comprises a housing 1 of the reactor, a first feed port A1 disposed at the top end of the housing, a multi-layer fluid material distribution plate disposed at the middle end, and a discharge port 5 disposed at the bottom end,
the fluid material distribution plate is arranged from top to bottom:
the first fluid material distribution plate 2 comprises a plurality of first through holes 21, and a first fluid hose 23 which can penetrate through the lower layer through holes is arranged on each first through hole 21;
and so on: the pore diameters of the lower layer through holes are larger than those of the upper layer through holes, and the number of the lower layer through holes is consistent; one end of the upper layer fluid hose is connected with the upper layer through hole, and the other end of the upper layer fluid hose is nested at the middle upper part of the lower layer fluid hose through the lower layer through hole; a feed inlet is arranged between two adjacent layers of fluid material distribution plates;
the fluid hose is made of flexible material.
The flow velocity of the liquid is distributed through the pressure distribution, so that the upper and lower two-layer liquid material distribution plates uniformly distribute the reaction materials, and as the front section is provided with the pressure to convey the materials, the rear-end reaction liquid enters the turbulent flow reaction section after being distributed, and a turbulent flow reaction section is arranged between the tail end of an upper-layer liquid flexible pipe and the tail end of a lower-layer liquid flexible pipe, and the efficient reaction can be carried out in the microchannel reactor due to the formation of liquid turbulence, so that the purpose is achieved.
Example 2
Referring to fig. 2, the first through holes 21 on the first fluid material distribution plate 2 are uniformly arranged, and each of the upper through holes and the lower through holes is a concentric hole with different diameters. Each layer of fluid hose is detachably connected with the through hole of the layer through a connecting port of the layer, and the connecting port is arranged at the bottom of the through hole of each layer.
The first through holes on the first fluid material distribution plate are uniformly arranged, each upper through hole and each lower through hole are concentric holes with different diameters, corresponding dimensional changes are made according to pressure changes according to actual use scenes, and the corresponding dimensional changes are matched with turbulence reaction self-adaptive adjustment and are realized through 3D printing.
Example 3
The tail end of each fluid hose is a normally closed liquid locking port, and when no fluid passes through, the tail end is closed, and when the fluid passes through, the tail end is open.
The pressure is increased, and the reaction effect of the reaction liquid entering the turbulent flow reaction section after being distributed is enhanced.
Example 4
Referring to fig. 3, the other end of the upper layer fluid hose is nested in the middle upper portion of the lower layer fluid hose, the nested length of the upper layer fluid hose is X, the lengths of the tail end of the upper layer fluid hose and the tail end of the lower layer fluid hose are 1.5X-2X, wherein X is a natural number, and the length unit is mm.
According to the actual use scene X of 200, the middle end of the reactor is set to be in a freely overlapped structure, and the top layer is a first fluid material distribution plate 2 which can be detachably connected with the top end with a first feed inlet;
the superposition structure is as follows:
the middle end of each shell is composed of a plurality of detachable middle layers, each middle layer comprises a shell body serving as a side wall and a fluid material distribution plate serving as the bottom, and each side wall is provided with a matched feed inlet; it should be noted that: the first intermediate layer connected with the top comprises a first layer fluid material distribution plate 2 at the top, and the top of the rest intermediate layers is the bottom of the upper layer.
Preferably, the flexible material comprises ethylene propylene diene monomer, expanded silica gel and PTFE.
Preferably, the number of the fluid material distribution plates is 2, and a second feeding port A2 is arranged between the first fluid material distribution plate 2 and the first fluid material distribution plate 3.
Example 4
Referring to fig. 4, a conical diversion bucket 4 is disposed between the bottom fluid material distribution plate and the discharge port 5, and a plurality of diversion holes 41 are disposed on the conical diversion bucket 4. The second layer of fluid material distribution plate, the diversion holes 41 of the conical diversion hopper 4 are distributed in a mode of increasing from bottom to top.
The reaction mixture is sprayed into the conical diversion hopper from the fluid hose of the bottom fluid material distribution plate under the action of pressure, and part of the reaction mixture is directly ejected out through the diversion hole 41 and flows to the discharge hole 5; the other part is sprayed on the inner wall of the conical diversion bucket 4, and the pressure is sprayed on the bottom fluid material distribution plate again due to the pressure effect, so that the backflow turbulence flows, the pressure is increased, the backflow turbulence is better sprayed out through the diversion holes 41, the reaction is achieved through the multistage continuous spraying-backflow turbulence repeatedly, and finally the reaction is discharged from the discharge hole 5, so that the complete reaction is completed.
Example 5
A method of using a microchannel reactor comprising the steps of:
step one, a step one; the device comprises two or more fluid materials, wherein a first fluid material is pressed into the upper part of a first fluid material distribution plate 2 through a first feed port A1;
step two: under the pressure, the first fluid material is uniformly distributed on the first fluid material distribution plate 2 and then flows into the first fluid hoses 23 through the corresponding inflow first through holes 21;
step three: the second fluid material is pressed into the upper part of the second fluid material distribution plate 3 through the second feeding hole A2;
step four: under the pressure, the second material is uniformly distributed in the second fluid material distribution plate 3 and then flows into the second fluid hose 33 through the second through holes 31 correspondingly;
step five: repeating the third and fourth steps until all fluid materials are added, wherein the other end of the upper layer fluid hose is nested at the middle upper part of the lower layer fluid hose, the nested length of the upper layer fluid hose is X, the lengths of the tail end of the upper layer fluid hose and the tail end of the lower layer fluid hose are 1.5X-2X, wherein X is a natural number larger than 200, and the length unit is mm;
step six: the mixed liquid after the mixing reaction of the fluid hose at the bottommost layer flows into a conical diversion bucket (4), a diversion hole 41 is formed in the conical diversion bucket 4, and the mixed liquid flows to the discharge hole 5 through the diversion hole 41.
As described above, from the second fluid material, the newly added fluid material flows into the middle of the interlayer of two adjacent hoses, and continues to advance to be mixed with the materials to start the mixing reaction, so that the two materials are divided into a plurality of parts according to the same proportion and then react in a one-to-one correspondence;
the mixed liquid flows into the cone bottom, and as the flow dividing holes 41 of the cone-shaped flow dividing hopper 4 are distributed in a mode of increasing from bottom to top, the holes of the cone bottom are less, so that the flow is not urgent, the liquid turns upwards, the flow is deflected, and the efficiency of the mixing reaction is enhanced.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (10)
1. A microchannel reactor is characterized by comprising a shell (1) of the reactor, a first feed inlet (A1) is arranged at the top end of the shell, a multi-layer fluid material distribution plate is arranged at the middle end of the shell, a discharge outlet (5) is arranged at the bottom end of the shell,
the fluid material distribution plate is arranged from top to bottom:
the first fluid material distribution plate (2) comprises a plurality of first through holes (21), and a first fluid hose (23) which can penetrate through the lower layer through holes is arranged on each first through hole (21);
and so on: the pore diameters of the lower layer through holes are larger than those of the upper layer through holes, and the number of the lower layer through holes is consistent; one end of the upper layer fluid hose is connected with the upper layer through hole, and the other end of the upper layer fluid hose is nested at the middle upper part of the lower layer fluid hose through the lower layer through hole; a feed inlet is arranged between two adjacent layers of fluid material distribution plates;
the fluid hose is made of flexible material.
2. A microchannel reactor according to claim 1, wherein the first through holes (21) in the first fluid material distribution plate (2) are uniformly arranged and each upper through hole and lower through hole are concentric holes of different diameters.
3. The microchannel reactor according to claim 1, wherein each layer of fluid hoses is detachably connected to the layer of through holes through a connection port in the layer, the connection port being provided at the bottom of each layer of through holes.
4. The microchannel reactor of claim 1, wherein each fluid hose has a normally closed liquid lock at its end, the end being closed when no fluid is passing and open when fluid is passing.
5. The microchannel reactor of claim 1, wherein the other end of the upper layer fluid hose is nested in the upper middle portion of the lower layer fluid hose, the nested length of the upper layer fluid hose is X, the lengths of the upper layer fluid hose end and the lower layer fluid hose end are 1.5X-2X, wherein X is a natural number, and the length units are mm.
6. The microchannel reactor of claim 1, wherein the flexible material comprises ethylene propylene diene monomer, expanded silica gel, and PTFE.
7. A microchannel reactor according to claim 1, wherein the number of fluid material distribution plates is 2, and a second feed opening (A2) is provided between the first fluid material distribution plate (2) and the first fluid material distribution plate (3).
8. A microchannel reactor according to claim 1, characterized in that a conical distribution funnel (4) is arranged between the bottom fluid material distribution plate and the discharge opening (5), and a plurality of distribution holes (41) are arranged on the conical distribution funnel (4).
9. A microchannel reactor according to claim 8, characterized in that the second layer of fluid material distribution plate has distribution holes (41) of the conical distribution hopper (4) distributed in a increasing manner from bottom to top.
10. A method of using a microchannel reactor as claimed in any one of claims 1 to 9, wherein: the method comprises the following steps:
step one, a step one; the device comprises two or more fluid materials, wherein a first fluid material is pressed into the upper part of a first fluid material distribution plate (2) through a first feed port (A1);
step two: under the pressure, the first fluid material is uniformly distributed on the first fluid material distribution plate (2) and then flows into the first fluid hose (23) through the corresponding inflow first through hole (21);
step three: the second fluid material is pressed into the upper part of the second fluid material distribution plate (3) through the second feeding hole (A2);
step four: under the pressure, the second material is uniformly distributed in the second fluid material distribution plate (3) and then flows into the second fluid hose (33) through the corresponding inflow second through holes (31).
Step five: repeating the third and fourth steps until all fluid materials are added, wherein the other end of the upper layer fluid hose is nested at the middle upper part of the lower layer fluid hose, the nested length of the upper layer fluid hose is X, the lengths of the tail end of the upper layer fluid hose and the tail end of the lower layer fluid hose are 1.5X-2X, wherein X is a natural number larger than 200, and the length unit is mm;
step six: the mixed liquid after the mixing reaction of the fluid hose at the bottommost layer flows into a conical diversion bucket (4), a diversion hole (41) is formed in the conical diversion bucket (4), and the mixed liquid flows to a discharge port (5) through the diversion hole (41).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310750557.6A CN116808972A (en) | 2023-06-25 | 2023-06-25 | Microchannel reactor and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310750557.6A CN116808972A (en) | 2023-06-25 | 2023-06-25 | Microchannel reactor and method |
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| Publication Number | Publication Date |
|---|---|
| CN116808972A true CN116808972A (en) | 2023-09-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310750557.6A Pending CN116808972A (en) | 2023-06-25 | 2023-06-25 | Microchannel reactor and method |
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|---|---|
| CN (1) | CN116808972A (en) |
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2023
- 2023-06-25 CN CN202310750557.6A patent/CN116808972A/en active Pending
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