CN213348829U - Novel micro-channel reactor - Google Patents
Novel micro-channel reactor Download PDFInfo
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- CN213348829U CN213348829U CN202120763809.5U CN202120763809U CN213348829U CN 213348829 U CN213348829 U CN 213348829U CN 202120763809 U CN202120763809 U CN 202120763809U CN 213348829 U CN213348829 U CN 213348829U
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Abstract
The utility model discloses a novel microchannel reactor, which comprises a spiral microchannel, wherein the spiral microchannel comprises a plurality of layers of spiral cylinders which are sleeved in sequence, and each layer of spiral cylinder is formed by a plurality of spiral groove spirals; the spiral directions of the spiral grooves in the two adjacent layers of spiral cylinders are opposite, and the spiral grooves of the multiple layers of spiral cylinders are oppositely crossed to form a micro-channel; the utility model discloses can solve among the prior art heat exchange efficiency low, mass transfer efficiency is low, and the reactor pressure drop is high and the chemical reaction acutely releases heat the problem of accuse temperature difficulty.
Description
Technical Field
The utility model relates to a novel microchannel reactor belongs to chemical industry chemical reaction equipment technical field.
Background
The micro-reactor technology is also called as the micro-chemical technology, and is an extremely important development direction of the modern chemical technology. By utilizing the micro-reactor technology, chemical engineers can develop a new production process, realize the accurate control of the reaction process, obtain higher reaction yield and selectivity, and realize the continuity and automation of the reaction process. Meanwhile, the micro-reactor technology eliminates the amplification effect of the process, and the optimal reaction conditions of the small-scale process can be directly used for industrial production, thereby greatly shortening the process research and development time.
However, the existing microchannel reactor has obvious defects in practical use, for example, the application is limited due to the fact that the heat exchange efficiency cannot meet the requirement of severe exothermic reaction, the process parameter range of the reactor application is limited due to large pressure drop, and the energy loss is improved. How to improve the heat exchange efficiency of the microchannel reactor and reduce the pressure drop is an important direction for the research of the microchannel reactor at present.
In view of the above, the prior art is obviously inconvenient and disadvantageous in practical use, and needs to be improved.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to above not enough, provide a novel microchannel reactor, can solve among the prior art heat exchange efficiency low, mass transfer efficiency is low, the reactor pressure drop is high and the chemical reaction acutely releases heat the problem of accuse temperature difficulty.
For solving the technical problem, the utility model discloses a following technical scheme: a novel microchannel reactor comprises a spiral microchannel, wherein the spiral microchannel comprises a plurality of layers of spiral cylinders which are sequentially sleeved, and each layer of spiral cylinder is formed by a plurality of spiral grooves in a spiral manner;
the spiral directions of the spiral grooves in the adjacent two layers of spiral cylinders are opposite, and the spiral grooves of the multiple layers of spiral cylinders are oppositely crossed to form a micro-channel.
Further, an inner heat exchange tube is arranged in the innermost layer of the spiral cylinder; and an outer heat exchange pipe is arranged outside the spiral cylinder on the outermost layer.
Furthermore, the inlet of the spiral micro-channel is connected with an inlet distributor, and the inlet distributor is arranged in a through hole on the feeding seat.
Further, the outlet of the spiral microchannel directly discharges;
or an outlet collector is arranged at the outlet of the spiral microchannel in a communication way; the outlet collector is arranged in a stepped hole on the discharging seat, and the materials are discharged through the outlet collector and the discharging seat in sequence.
Further, the through hole comprises a first hole section and a second hole section with the diameter larger than that of the first hole section;
the inlet distributor comprises a distribution disc, the distribution disc is of a stepped cylindrical structure with an inner hole, and the distribution disc is divided into a large-diameter section and a small-diameter section; the distribution disc is arranged in the second hole section; the end face of the large-diameter section of the distribution disc is abutted against the step face between the first hole section and the second hole section.
Further, a first distribution space is formed by the inner wall surface of the first hole section and the end surface of the large-diameter section of the distribution disc; the inner wall surface of the second hole section, the outer circular surface of the small-diameter section of the distribution disc and the inlet end surface of the spiral micro-channel form a second distribution space together;
the first and second distribution spaces are in communication with the first and second inlets, respectively.
Furthermore, a plurality of first channels and a plurality of second channels are arranged on the distribution disc, the first channels and the second channels are both open long grooves, the first channels extend along the radial direction of the distribution disc, and the first channels are open towards the axis of the distribution disc; and two ends of the first channel are respectively communicated with the first distribution space and the inlet of the spiral micro-channel.
Furthermore, the second channel is arranged on the small-diameter section of the distribution disc, the second channel extends along the radial direction of the distribution disc, and the second channel is back to the axial center of the distribution disc and is opened; one end of the second channel is closed, and the other end of the second channel is communicated with the inlet of the spiral micro-channel.
The first distribution space, the distribution disc and the second distribution space together form an inlet distributor.
Further, the stepped hole comprises a first hole, a second hole with a smaller diameter than the first hole;
the outlet collector is arranged in the first hole, and the end surface of the outlet collector is abutted against the step surface between the first hole and the second hole; a product distribution space is defined by the inner wall surface of the second hole and the end surface of the outlet collector; the product distribution space is in communication with the outlet.
Furthermore, the outlet collector is of a cylindrical structure with an inner hole, a product channel is arranged on the outlet collector, the product channel is an open long groove, the product channel extends along the radial direction, and the opening of the product channel faces to the axis of the outlet collector; and two ends of the product channel are respectively communicated with the outlet of the spiral micro-channel and the product distribution space.
The utility model adopts the above technical scheme after, compare with prior art, have following advantage:
1. the utility model discloses a spiral spatial structure design can solve among the prior art contact inadequately between the reactant, and spiral spatial structure's design makes the fluid flow along corresponding passageway, has increased two strands and even the effective area of contact between the stranded material, makes the reaction go on more fast, can promote reaction efficiency's improvement.
2. The utility model discloses a three-dimensional passageway of spiral can be under the circumstances about enlarging whole reaction chamber, area of contact and the microchannel reactor of same yardstick are not upper and lower, reaches the effect of zero loss of mass transfer, and the pressure drop is 1/12 of the microchannel reactor of same yardstick, has improved mass transfer efficiency greatly, has reduced the pressure drop, and the technological parameter scope is wide.
3. The utility model discloses an inside and outside two heat transfer structure, the problem that heat exchange efficiency is low among the prior art can be solved, heat exchange efficiency is improved and is up to
(ii) a The reaction of the materials is carried out in a relatively constant temperature range.
The present invention will be described in detail with reference to the accompanying drawings and examples.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic view of the feed block;
FIG. 3 is an enlarged view at A in FIG. 1;
FIG. 4 is an enlarged view at B of FIG. 1;
FIG. 5 is a schematic structural view of a spiral microchannel;
FIG. 6 is a left side view of FIG. 5;
FIG. 7 is a schematic view of the construction of the outlet collector;
FIG. 8 is a schematic view of a distributor plate configuration;
FIG. 9 is a right side view of FIG. 8;
in the figure, the position of the upper end of the main shaft,
1-inlet means, 2-inlet distributor, 3-inner heat exchange tubes, 4-spiral microchannels, 5-outer heat exchange tubes, 6-outlet collector, 7-outlet means, 8-distribution plate, 9-first distribution space, 10-second distribution space, 11-feed seat, 12-through hole, 121-first hole section, 122-second hole section, 13-first channel, 14-second channel, 15-first inlet, 16-second inlet, 17-product channel, 18-discharge seat, 19-stepped hole, 191-first hole, 192-second hole; 20-product distribution space, 21-outlet, 22-medium inlet, 23-medium outlet.
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described with reference to the accompanying drawings.
Examples
As shown in fig. 1-9, the utility model provides a novel microchannel reactor, which comprises a spiral microchannel 4, wherein the spiral microchannel 4 comprises a plurality of layers of spiral cylinders, and each layer of spiral cylinder is formed by a plurality of spiral groove spirals; the diameter of the spiral cylinder is gradually reduced from the outer layer to the inner layer; the spiral directions of the spiral grooves in the two adjacent layers of spiral cylinders are opposite, the spiral grooves of the multiple layers of spiral cylinders are oppositely crossed to form a micro-channel, and the width of the micro-channel is 1-2 mm.
The two ends of the spiral micro-channel 4 are respectively an inlet and an outlet; the inlet distributor 2 is arranged at one end of the inlet of the spiral micro-channel 4, specifically, the inlet end face of the spiral micro-channel 4 is connected with the outlet end face of the inlet distributor 2, the inlet end face and the outlet end face are not rigidly connected, and the micro-channel compresses the inlet distributor.
The inlet distributor 2 is arranged in the inlet device 1, the inlet device 1 comprises a feeding seat 11, a through hole 12 is formed in the feeding seat 11, the through hole 12 comprises a first hole section 121 and a second hole section 122, the diameter of the first hole section 121 is smaller than that of the second hole section 122, and a step surface is formed between the first hole section 121 and the second hole section 122.
The inlet distributor 2 comprises a distribution disc 8, the distribution disc 8 is of a stepped cylindrical structure with an inner hole and comprises a large-diameter section, a small-diameter section and a step surface between the large-diameter section and the small-diameter section; the distribution disc 8 is arranged in the second hole section 122, and the end surface of the large-diameter section of the distribution disc 8 abuts against the step surface between the first hole section 121 and the second hole section 122; the inner wall surface of the first hole section 121 and the large diameter section end surface of the distribution plate 8 form a first distribution space 9.
One end of the inlet of the spiral micro-channel 4 extends into the second hole section 122, and the inlet end face of the spiral micro-channel 4 is connected with the end face of the small-diameter section of the distribution disc 8; the inner wall surface of the second hole section 122, the outer circular surface of the small-diameter section of the distribution disc 8 and the inlet end surface of the spiral micro-channel 4 together enclose a second distribution space 10.
The first distribution space 9, the distribution plate 8 and the second distribution space 10 together form the inlet distributor 2.
A plurality of first channels 13 and a plurality of second channels 14 are arranged on the distribution disk 8, the first channels 13 and the second channels 14 are both open long grooves, the width direction of the first channels 13 extends along the radial direction of the distribution disk 8, and the first channels are open towards the axis of the distribution disk 8; the first channel 13 extends axially to two end faces of the distribution disc 8 in the length direction, so that two ends of the first channel 13 are respectively communicated with the first distribution space 9 and the inlet of the spiral micro-channel 4.
The second channel 14 is arranged on the small-diameter section of the distribution disc 8, the width direction of the second channel 14 extends along the radial direction of the distribution disc 8, and the second channel 14 is opened back to the axis of the distribution disc 8; the length direction of the second channel 14 extends from the intersection of the large-diameter section and the small-diameter section of the distribution disc 8 to the end of the small-diameter section of the distribution disc 8 along the axial direction, so that the second channel 14 is communicated with the inlet of the spiral micro-channel 4.
The feeding seat 11 is provided with a first inlet 15 and a second inlet 16, the first inlet 15 is communicated with the first distribution space 9, and the second inlet 16 is communicated with the second distribution space 10.
The outlet of the spiral micro-channel 4 can directly discharge;
or an outlet collector 6 is arranged at an outlet of the spiral microchannel 4, the outlet collector 6 is of a cylindrical structure with an inner hole, the outlet collector 6 is arranged in an outlet device 7, the outlet device 7 comprises a discharging seat 18, a stepped hole 19 is arranged on the discharging seat 18, the stepped hole 19 comprises a first hole 191 and a second hole 192, the diameter of the first hole 191 is larger than that of the second hole 162, and a stepped surface is formed between the first hole 191 and the second hole 192; the outlet collector 6 is disposed in the first hole 191, and an end surface of the outlet collector 6 abuts against a step surface between the first hole 191 and the second hole 192; the inner wall surface of the second hole 192 and the end surface of the outlet collector 6 enclose a product distribution space 20.
One end of the outlet of the spiral micro-channel 4 extends into the stepped hole 19, and the outlet end surface of the spiral micro-channel is connected with the end surface of the outlet collector 6.
A product channel 17 is arranged on the outlet collector 6, the product channel 17 is an open long groove, the width direction of the product channel 17 extends along the radial direction, and the opening of the product channel 17 faces the axis of the outlet collector 6; the length direction of the product channel 17 extends to the two ends of the outlet collector 6 along the axial direction, so that the two ends of the product channel 17 are respectively communicated with the outlet of the spiral micro-channel 4 and the product distribution space 20.
An outlet 21 is arranged on the discharging seat 18, and the outlet 21 is communicated with the product distribution space 20.
An inner heat exchange tube 3 is arranged in the innermost spiral cylinder of the spiral micro-channel 4, one end of the inner heat exchange tube 3 extends out of the feeding seat 11 through the through hole 12 of the inlet distributor 2, and the other end of the inner heat exchange tube 3 extends out of the discharging seat 18 through the stepped hole 19 on the outlet collector 6; and the two ends of the inner heat exchange tube 3 are respectively an inlet and an outlet of a heat exchange medium.
An outer heat exchange tube 5 is arranged outside the outermost layer of the spiral cylinder of the spiral micro-channel 4, two ends of the outer heat exchange tube 5 are respectively and fixedly connected with the feeding seat 11 and the discharging seat 18, and the fixed connection adopts welding or bolt connection; and a medium inlet 22 and a medium outlet 23 are respectively arranged at two ends of the outer heat exchange pipe 5.
The utility model discloses a theory of operation:
the method comprises the steps of firstly opening an inner heat exchange pipe and an outer heat exchange pipe to enable heat exchange media to circulate, then enabling a first material to reach a first channel on a distribution disc through a first inlet of an inlet device through a first cloth space, and enabling the first material to flow from the first channel to the inlet direction of a spiral micro-channel. The second material enters the second channel on the distribution disc through the second inlet of the inlet device through the second distribution space, flows from the second channel to the inlet direction of the spiral micro-channel, and the first material and the second material are converged at the inlet of the micro-channel and then enter the spiral micro-channel.
Two kinds of materials flow through the microchannel, because the spiral microchannel is formed by a plurality of spiral barrels formed by a plurality of spiral groove spirals, and the spiral directions of the spiral grooves in two adjacent layers of spiral barrels are opposite, the spiral grooves of the spiral barrels are oppositely crossed to form the microchannel, the inside and outside of the microchannel are communicated in an up-down multi-direction way to form a three-dimensional reaction cavity communicated in a multi-direction way, so that the two kinds of materials have more contact areas and contact time in the microchannel, and the two kinds of materials are continuously mixed, separated, remixed and re-separated in the spiral microchannel, thereby the two kinds of materials are fully mixed, after the reaction is carried out for a period of time, the material reaction is finished, the reaction product enters a product distribution space through a product channel on the outlet collector, and then flows out through an outlet on the outlet device, and the whole processes of feeding.
The utility model discloses a spiral spatial structure design can solve the insufficient problem of contact between the reactant among the prior art, and spiral spatial structure's design makes fluid flow along corresponding passageway, has increased the effective area of contact between the two strands, makes the reaction go on more fast, can promote reaction efficiency's improvement.
The utility model discloses a three-dimensional passageway of spiral can be under the circumstances about enlarging whole reaction chamber, area of contact and the microchannel reactor of same yardstick are not upper and lower, reaches the effect of zero loss of mass transfer, and the pressure drop is 1/12 of the microchannel reactor of same yardstick, has improved mass transfer efficiency greatly, has reduced the pressure drop, and the technological parameter scope is wide.
The utility model discloses an inside and outside two heat transfer structure, the problem that heat exchange efficiency is low among the prior art can be solved, heat exchange efficiency is improved and is up to
。
The foregoing is illustrative of the best mode of the invention, and details not described herein are within the common general knowledge of a person of ordinary skill in the art. The protection scope of the present invention is subject to the content of the claims, and any equivalent transformation based on the technical teaching of the present invention is also within the protection scope of the present invention.
Claims (10)
1. A novel microchannel reactor comprises a spiral microchannel (4), and is characterized in that: the spiral micro-channel (4) comprises a plurality of layers of spiral cylinders which are sequentially sleeved, and each layer of spiral cylinder is formed by a plurality of spiral grooves in a spiral mode;
the spiral directions of the spiral grooves in the adjacent two layers of spiral cylinders are opposite, and the spiral grooves of the multiple layers of spiral cylinders are oppositely crossed to form a micro-channel.
2. The novel microchannel reactor of claim 1, wherein: an inner heat exchange tube (3) is arranged in the innermost spiral cylinder; and an outer heat exchange pipe (5) is arranged outside the spiral cylinder on the outermost layer.
3. The novel microchannel reactor of claim 2, wherein: the inlet of the spiral micro-channel (4) is connected with the inlet distributor (2), and the inlet distributor (2) is arranged in the through hole (12) on the feeding seat (11).
4. The novel microchannel reactor of claim 2, wherein: the outlet of the spiral micro-channel (4) directly discharges materials;
or an outlet collector (6) is arranged at the outlet of the spiral micro-channel (4) in a communicating way; the outlet collector (6) is arranged in a stepped hole (19) on the discharging seat (18), and the materials are discharged through the outlet collector (6) and the discharging seat (18) in sequence.
5. The novel microchannel reactor of claim 3, wherein: the through hole (12) comprises a first hole section (121) and a second hole section (122) with the diameter larger than that of the first hole section (121);
the inlet distributor (2) comprises a distribution disc (8), the distribution disc (8) is of a stepped cylindrical structure with an inner hole, and the distribution disc (8) is divided into a large-diameter section and a small-diameter section; the distribution disc (8) is arranged in the second hole section (122); the end face of the large-diameter section of the distribution disc (8) abuts against a step face between the first hole section (121) and the second hole section (122).
6. The novel microchannel reactor of claim 5, wherein: a first distribution space (9) is formed by the inner wall surface of the first hole section (121) and the end surface of the large-diameter section of the distribution disc (8); the inner wall surface of the second hole section (122), the outer circular surface of the small-diameter section of the distribution disc (8) and the inlet end surface of the spiral micro-channel (4) jointly form a second distribution space (10);
the first distribution space (9) and the second distribution space (10) communicate with a first inlet (15) and a second inlet (16), respectively.
7. The novel microchannel reactor of claim 6, wherein: a plurality of first channels (13) and a plurality of second channels (14) are arranged on the distribution disc (8), the first channels (13) and the second channels (14) are both open long grooves, the first channels (13) extend along the radial direction of the distribution disc (8), and the first channels are open towards the axis of the distribution disc (8); and two ends of the first channel (13) are respectively communicated with the first distribution space (9) and the inlet of the spiral micro-channel (4).
8. The novel microchannel reactor of claim 7, wherein: the second channel (14) is arranged on the small-diameter section of the distribution disc (8), the second channel (14) extends along the radial direction of the distribution disc (8), and the second channel (14) is opened back to the axis of the distribution disc (8); one end of the second channel (14) is closed, and the other end of the second channel is communicated with the inlet of the spiral micro-channel (4).
9. The novel microchannel reactor of claim 4, wherein: the stepped bore (19) comprises a first bore (191), a second bore (192) of smaller diameter than the first bore (191);
the outlet collector (6) is arranged in the first hole (191), and the end face of the outlet collector (6) is abutted against the step surface between the first hole (191) and the second hole (192); the inner wall surface of the second hole (192) and the end surface of the outlet collector (6) enclose a product distribution space (20); the product distribution space (20) communicates with an outlet (21).
10. The novel microchannel reactor of claim 9, wherein: the outlet collector (6) is of a cylindrical structure with an inner hole, a product channel (17) is arranged on the outlet collector (6), the product channel (17) is an open long groove, the product channel (17) extends along the radial direction, and the opening of the product channel (17) faces to the axis of the outlet collector (6); and two ends of the product channel (17) are respectively communicated with the outlet of the spiral micro-channel (4) and the product distribution space (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120763809.5U CN213348829U (en) | 2021-04-15 | 2021-04-15 | Novel micro-channel reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120763809.5U CN213348829U (en) | 2021-04-15 | 2021-04-15 | Novel micro-channel reactor |
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| Publication Number | Publication Date |
|---|---|
| CN213348829U true CN213348829U (en) | 2021-06-04 |
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ID=76137046
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120763809.5U Active CN213348829U (en) | 2021-04-15 | 2021-04-15 | Novel micro-channel reactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213348829U (en) |
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2021
- 2021-04-15 CN CN202120763809.5U patent/CN213348829U/en active Active
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