CN114534657B - Microchannel rapid reactor - Google Patents

Abstract

The invention belongs to the technical field of reaction equipment, and particularly discloses a microchannel rapid reactor which comprises a shell, wherein a plurality of microchannel reaction units are arranged in the shell, each microchannel reaction unit comprises a microdispenser and a reaction pipeline, a cavity is arranged in the microdispenser, a partition piece is arranged in the cavity and divides the cavity into a plurality of independent distribution cavities, the partition piece comprises a plurality of transverse parts and a plurality of vertical parts, a feed inlet communicated with the corresponding distribution cavity is arranged on the microdispenser, and the reaction pipeline is communicated with one end of the cavity away from the feed inlet. According to the invention, the cavity of the micro-distributor is divided into the distribution cavities with special structures by the separating pieces, so that the reaction materials flow through the distribution cavities to form the multi-layer materials which are alternately arranged, the contact area of the reaction materials is effectively increased, the mass transfer efficiency of the reaction materials is improved, the reaction time is shortened, and the production efficiency is improved.

Description

Microchannel rapid reactor

Technical Field

The invention relates to the technical field of reaction equipment, in particular to a micro-channel rapid reactor.

Background

The micro-channel reactor, called micro-reactor for short, has the advantages of small volume, large specific surface area and better mass and heat transfer effect than the kettle type reactor. Conventional microchannel reactors typically have Y-shaped channels, i.e., a channel into which a first fluid is introduced and a channel into which a second fluid is introduced intersect to form a single converging channel, and fluids supplied into the channels meet each other at the intersection of the channels and then split into the next Y-shaped channel, thereby achieving diffusion and mixing of the fluids. However, although the Y-shaped channels can achieve diffusion and mixing of fluids, when the fluids meet at the intersecting portions of the channels, the contact area between the first fluid and the second fluid is limited (the flow area of the Y-shaped channels is small, and thus the contact area of the fluids is small), so that in order to ensure complete reaction of the fluids, a plurality of Y-shaped channels are required, which results in relatively long reaction time of the fluids, relatively low production efficiency, and unfavorable realization of rapid production. Therefore, there is a need to design a microchannel reactor that can improve the production efficiency.

Disclosure of Invention

In view of the above-mentioned drawbacks of the prior art, an object of the present invention is to provide a microchannel rapid reactor for solving the problem of low production efficiency caused by small contact area when fluids meet in the conventional Y-type microchannel reactor.

To achieve the above and other related objects, the present invention provides a microchannel rapid reactor, comprising a housing, wherein a plurality of microchannel reaction units are provided in the housing, each microchannel reaction unit comprises a micro-distributor and a reaction pipeline, a cavity is provided in the micro-distributor, a partition is provided in the cavity, the partition divides the cavity into a plurality of independent distribution cavities, the partition comprises a plurality of transverse parts and a plurality of vertical parts, and two adjacent transverse parts are connected by the vertical parts; the micro distributor is provided with at least two feed inlets which are communicated with the corresponding distribution cavities, and the end parts of the reaction pipelines are communicated with one end of the cavity, which is far away from the feed inlets.

As described above, the microchannel rapid reactor of the invention has the following beneficial effects: in the invention, the cavity in the micro-distributor is divided into a plurality of independent distributing cavities by the partition piece, and the partition piece is provided with a plurality of transverse parts and vertical parts, so that the internal space of the distributing cavity can be divided into a plurality of layers of spaces, thereby the reaction materials flowing into the distributing cavity form a plurality of layers of materials, and the layers of materials formed by more than two reaction materials are alternately arranged, for example, on the longitudinal section of the distributing cavity, the two reaction materials form a structure of 'material layer A-material layer B-material layer A-material layer B … …', and the reaction materials fill the gap formed between the two adjacent transverse parts, so that the area of each layer of material is larger, that is, the contact area of the subsequent two reaction materials when being mixed in the reaction pipeline is large.

Optionally, an atomization section is arranged in the reaction pipeline, and the atomization section sequentially comprises a first contraction section, a throat section and an expansion section along the material flow direction.

In this scheme, when the reaction material flows through the atomizing section, the shrink section one flows through earlier, and the flow area shrink of shrink section one, then the reaction material circulate laryngeal section and expansion section again, and the reaction material is flowing with higher speed in shrink section one, and the inner wall of shrink section one assaults, breaks the reaction material for the reaction material atomizes, further increases the area of contact of reaction material, thereby further improves the mass transfer efficiency of reaction material, the mixed reaction of reaction material of being convenient for, more is favorable to improving production efficiency.

Optionally, a baffling area is arranged in the reaction pipeline, and a plurality of baffling pieces I are arranged in the baffling area.

In the scheme, the reaction material flowing through the atomization section flows through the baffling area, and the flow path of the reaction material is changed under the action of the first baffling piece, so that the mixing effect of the reaction material is improved, and the mass transfer efficiency of the reaction material is further improved.

Optionally, the first baffle member is a cylinder, the cylinder is horizontally arranged in the baffle zone, and the axis of the cylinder is intersected with the projection of the axis of the reaction pipeline on the horizontal plane;

or the first baffle piece comprises a baffle plate a and a baffle plate b, the middle part of the baffle plate a is provided with a diversion trench, and the baffle plate a and the baffle plate b form two Z-shaped flow channels in a baffle area;

or, the first baffle part comprises a rotating shaft and a plurality of blades coaxially and fixedly connected to the rotating shaft, and the rotating shaft is rotatably connected to the inner wall of the baffle area.

In this scheme, when the baffling piece is the cylinder, the surface of cylinder is round and smooth, so, the baffling piece one not only can change the flow path of reaction material, improves the mixed effect of reaction material, still is convenient for follow-up cleaning work's going on. When the first baffle part comprises a baffle plate a and a baffle plate b, the baffle plate a and the baffle plate b form two Z-shaped flow passages in the baffle area, so that atomized reaction materials do Z-shaped shearing flow in the baffle area, the contact area of the reaction materials is increased, and the mass transfer efficiency of the reaction materials is improved. When the first baffle piece comprises a rotating shaft and a plurality of blades, the reaction materials impact on the blades, and the blades drive the rotating shaft to rotate, so that the flow path of the reaction materials is changed, the mixing effect of the reaction materials is improved, and the mass transfer efficiency of the reaction materials is further improved.

Optionally, the atomizing section further comprises a second contraction section, and the second contraction section is located at one end of the expansion section away from the laryngeal opening section.

In this scheme, the design of shrink section two can avoid flowing through the high-speed atomizing material direct impact that forms behind the atomizing section in the right angle that forms between baffle a and the reaction tube inner wall to be convenient for carry out cleaning work after the reaction.

Optionally, a baffle member II is arranged in the second contraction section.

In this scheme, baffling piece two can change the flow path of the high-speed atomizing material that forms after atomizing, cooperates vortex piece one to improve the vortex effect to the reaction material to improve the mixing effect of reaction material, and then improve the mass transfer efficiency of reaction material.

Optionally, the second baffle member is a cylinder, the cylinder is horizontally arranged in the second contraction section, and the axis of the cylinder is intersected with the projection of the axis of the reaction pipeline on the horizontal plane;

or, the second baffle part comprises a rotating shaft and a plurality of blades coaxially and fixedly connected to the rotating shaft, and the rotating shaft is rotatably connected to the inner wall of the second contraction section.

In this scheme, when baffling piece II is the cylinder, the surface of cylinder is round and smooth, so, baffling piece II not only can change the flow path of reaction material, improves the mixed effect of reaction material, still is convenient for follow-up cleaning work's going on. And when the baffle member comprises a rotating shaft and a plurality of blades, the reaction material flows through the atomizing section to form high-speed atomized material, and the blades on the blades are impacted by the high-speed atomized material to drive the rotating shaft to rotate, so that the flow path of the reaction material is changed, the mixing effect of the reaction material is improved, and the mass transfer efficiency of the reaction material is further improved.

Optionally, a third baffle is arranged in the diversion trench.

In this scheme, baffling piece III in the guiding gutter can further improve the vortex effect to the reaction material to further improve the mass transfer efficiency of reaction material.

Optionally, the third baffle member is a cylinder, the cylinder is horizontally arranged in the diversion trench, and the axis of the cylinder is intersected with the projection of the axis of the reaction pipeline on the horizontal plane;

or, the third baffle part comprises a rotating shaft and a plurality of blades coaxially and fixedly connected to the rotating shaft, and the rotating shaft is rotationally connected to the inner wall of the baffle area.

In this scheme, when baffling piece three is the cylinder, the surface of cylinder is round and smooth, can make the reaction material reposition of redundant personnel of flowing through the guiding gutter better. When the third baffle piece comprises a rotating shaft and a plurality of blades, the reaction materials impact on the blades when flowing through the diversion trench, the blades drive the rotating shaft to rotate, and the blades rotate to change the flow path of the reaction materials, so that the mixing efficiency of the reaction materials is improved, the mass transfer efficiency of the reaction materials is further improved, and the production efficiency is improved.

Optionally, the transverse portion is provided with a plurality of bending portions.

In this scheme, the kink on the transverse portion can make the reaction material form the material layer that has the fluctuation to further increase the area of contact of reaction material, and then further improve the mass transfer efficiency of reaction material.

Drawings

FIG. 1 is a longitudinal sectional view of a microchannel rapid reactor according to a first embodiment of the invention;

FIG. 2 is a left side view of the micro-dispenser of FIG. 1;

FIG. 3 is a cross-sectional view taken along the direction A-A in FIG. 2;

FIG. 4 is a cross-sectional view taken along the direction B-B in FIG. 3;

FIG. 5 is an axial cross-sectional view of the reaction tube array of FIG. 1;

FIG. 6 is an axial sectional view of a reaction tube array in a second embodiment of the present invention;

FIG. 7 is an axial sectional view of a reaction tube array in a third embodiment of the present invention;

FIG. 8 is an axial sectional view of a reaction tube array in a fourth embodiment of the present invention;

FIG. 9 is an axial sectional view of a reaction tube array in a fifth embodiment of the present invention;

FIG. 10 is an axial sectional view of a reaction tube array in a sixth embodiment of the present invention;

FIG. 11 is an axial sectional view of a reaction tube array in a seventh embodiment of the present invention;

FIG. 12 is an axial sectional view of a reaction tube array in accordance with an embodiment eight of the present invention;

FIG. 13 is an axial cross-sectional view of a reaction tube array in accordance with a ninth embodiment of the present invention;

FIG. 14 is an axial sectional view of a reaction tube array in accordance with an embodiment ten of the present invention;

FIG. 15 is a cross-sectional view of a micro-distributor according to the direction B-B in FIG. 3 in accordance with an eleventh embodiment of the present invention;

FIG. 16 is a cross-sectional view of a micro-distributor according to the direction B-B of FIG. 3 in accordance with a twelfth embodiment of the present invention;

FIG. 17 is a cross-sectional view of a micro-distributor according to the direction B-B in FIG. 3 in accordance with a thirteenth embodiment of the present invention.

Detailed Description

Other advantages and effects of the present invention will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present invention with reference to specific examples. The invention may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present invention.

It should be noted that, the illustrations provided in the present embodiment merely illustrate the basic concept of the present invention by way of illustration, and only the components related to the present invention are drawn in the drawings, not according to the number, shape and size of the components in actual implementation, and the form, number and proportion of each component in actual implementation may be arbitrarily changed, and the layout of the components may be more complex. The structures, proportions, sizes, etc. shown in the drawings attached hereto are for illustration purposes only and are not intended to limit the scope of the invention, which is defined by the claims, but rather by the claims. Also, the terms such as "upper," "lower," "left," "right," "middle," and "a" and the like recited in the present specification are merely for descriptive purposes and are not intended to limit the scope of the invention, but are intended to provide relative positional changes or modifications without materially altering the technical context in which the invention may be practiced. Also, the specific process parameters and the like described below are just one example of suitable ranges, i.e., a person skilled in the art can select a suitable range from the description herein, and are not limited to the specific values described below.

Reference numerals in the drawings of the specification include: the device comprises a shell 1, an inlet end tube plate 2, an outlet end tube plate 3, a feeding pipe 4, a micro-distributor 5, a reaction pipeline 6, a cavity 7, a distribution cavity 710, a partition 8, a transverse part 810, a bending part 811, a vertical part 820, a lightening hole 9, a feed inlet 10, a reaction column tube 11, an atomization section 110, a contraction section one 111, a throat section 112, an expansion section 113, a contraction section two 114, a baffle area 120, a U-shaped tube 12, a baffle one 13, a collecting tube 14, a cold and hot medium liquid inlet tube 15, a cold and hot medium liquid outlet tube 16, a spoiler 17, a baffle a18, a diversion trench 181, a baffle b19, a rotating shaft 20, a blade 21, a baffle two 22 and a baffle three 23.

Example 1

As shown in fig. 1, this embodiment provides a microchannel rapid reactor, which includes a housing 1, wherein the left end of the housing 1 is fixedly connected with an inlet end tube plate 2 (the fixed connection mode may be welding or screw/bolt connection), the right end of the housing 1 is fixedly connected with an outlet end tube plate 3, and a sealed space (for flowing of cooling and heating media) is formed among the inlet end tube plate 2, the housing 1 and the outlet end tube plate 3. The left end of shell 1 is equipped with a plurality of inlet pipes 4, is equipped with a plurality of microchannel reaction unit in the shell 1, and every microchannel reaction unit includes microdispenser 5 and reaction tube 6, and entrance end tube sheet 2 and exit end tube sheet 3 can provide the support for microdispenser 5 and reaction tube 6. As shown in fig. 2, 3 and 4, the micro-distributor 5 is provided with a cavity 7, a partition 8 is provided in the cavity 7, the partition 8 divides the internal space of the cavity 7 into a plurality of independent distribution cavities 710, in this embodiment, the number of the partition 8 is one, and the number of the distribution cavities 710 is two. It should be noted that, according to actual needs, a person skilled in the art can install a suitable number of partitions 8 in the cavity 7 of the micro-distributor 5, so as to form a distribution chamber 710 corresponding to the number of reaction materials.

As shown in fig. 4, the partition 8 includes a plurality of transverse portions 810 and a plurality of vertical portions 820, two adjacent transverse portions 810 are connected by the vertical portions 820, in this embodiment, the number of the transverse portions 810 is seven, the number of the vertical portions 820 is eight, and the transverse portions 810 and the vertical portions 820 are integrally formed. The two adjacent lateral portions 810 are arranged in parallel, and the lateral portions 810 are all arranged horizontally, and the gap value between the two adjacent lateral portions 810 is greater than 0 and less than or equal to 5mm, in this embodiment, the gap value between the two adjacent lateral portions 810 is 1mm, so that the reaction material forms a film-like material with a thickness of 1 mm.

The micro-distributor 5 is provided with a lightening hole 9 and at least two feed inlets 10, each feed inlet 10 is communicated with a corresponding distribution cavity 710, and each feed inlet 10 is communicated with a corresponding feed pipe 4 (the number of the feed pipes 4 is twice that of the micro-channel reaction units). In this embodiment, the number of the distribution chambers 710 is two, and thus the number of the feed inlets 10 is also two. As seen in fig. 3, the left feed inlet 10 communicates with the left distribution chamber 710, the right feed inlet 10 communicates with the right distribution chamber 710, and the weight reducing hole 9 is located between the two feed inlets 10.

The left end of the reaction tube 6 communicates with the right end of the cavity 7 so that the reaction mass flows into the reaction tube 6 through the micro distributor 5. The reaction pipeline 6 comprises a plurality of reaction tubulars 11, two adjacent reaction tubulars 11 are communicated through a U-shaped pipe 12, in this embodiment, the reaction pipeline 6 is composed of three reaction tubulars 11 connected in series, as shown in fig. 5, an atomization section 110 and a baffling area 120 are arranged in each reaction tubulars 11, the atomization section 110 sequentially comprises a first contraction section 111, a throat section 112 and an expansion section 113 along the material flow direction, a plurality of first baffling pieces 13 are arranged in the baffling area 120, in this embodiment, the first baffling pieces 13 are cylinders, the cylinders are horizontally arranged in the baffling area 120, the axes of the cylinders are perpendicular to the projection of the axes of the reaction tubulars 11 on the horizontal plane, the number of the first baffling pieces 13 is twenty-nine, the first 13 is divided into three rows, the nine middle rows are ten, the first baffling pieces 13 in each row are uniformly arranged, and the first 13 in the adjacent two rows are vertically staggered. The first baffle member 13 may be integrally molded with the reaction tube 11 by a mold, or may be fixedly connected to the inner wall of the reaction tube 11 by welding after the reaction tube 11 is molded by casting.

The outlet end tube plate 3 is provided with a collecting tube 14, and the reaction tube 11 (the reaction tube 11 through which the material finally flows according to the material flow direction) at the tail end of all the micro-channel reaction units in the shell 1 is communicated with the collecting tube 14. In this embodiment, the header 14 extends through the outlet end tubesheet 3.

The shell 1 is connected with a cold and hot medium liquid inlet pipe 15 for introducing cold and hot medium into the shell 1 and a cold and hot medium liquid outlet pipe 16 for allowing the cold and hot medium in the shell 1 to flow out, and a plurality of spoilers 17 for spoiling are arranged in the shell 1, so that the cold and hot medium forms turbulence, and heat released by the reaction materials in the reaction process is absorbed better or heat is provided for the reaction materials. The spoiler 17 is welded to the inner wall of the outer shell 1 in this embodiment.

In practical use, two kinds of reaction materials flow into the corresponding feed inlets 10 on the microdispenser 5 through the corresponding feed pipes 4 respectively, and then flow into the corresponding distribution cavity 710, and the internal space of the distribution cavity 710 is divided into communicated multi-layer spaces by the partition 8 due to the special structure of the partition 8, so that the reaction materials flowing into the distribution cavity 710 form multi-layer materials, and the thickness of each layer of material is 1mm, and therefore, the reaction materials actually form multi-layer membranous materials in the distribution cavity 710. For convenience of description, the two reaction materials are respectively named as a reaction material a and a reaction material B, and as can be seen from fig. 4, the multilayer film materials formed by the reaction material a and the multilayer film materials formed by the reaction material B are alternately arranged with each other, that is, a structure of "film material a-film material B-film material a-film material B" is formed, so when the two reaction materials flow into the reaction pipeline 6 (the reaction tube 11 positioned at the bottom layer) after passing through the corresponding distribution cavity 710, the multilayer film material a and the multilayer film material B automatically contact and mix under the action of gravity, and at this time, the contact area of the two reaction materials is large, so that the mass transfer efficiency of the two reaction materials is high, the reaction speed is fast, and the production efficiency is improved.

After flowing into the reaction tube 11, the two reaction materials flow through the atomization section 110, then flow through the baffle area 120, and finally flow out of the reaction tube 11 along the collecting pipe 14. When the reaction material flows through the atomization section 110, the first contraction section 111 is conical, the flow area is contracted, and the reaction material flows through the first contraction section 111 and then flows through the throat section 112 and the expansion section 113, so that the reaction material flows in the first contraction section 111 in an accelerating way, and the reaction material is impacted and crushed by the inner wall of the first contraction section 111, so that the reaction material is atomized to obtain a high-speed atomized material (the initial speed of the reaction material can be adjusted to be supersonic at the highest speed when the reaction material flows into the feed pipe 4 through a high-pressure valve or a flow meter), and the contact area of the atomized reaction material is further increased, thereby being more beneficial to the mass transfer process of the reaction material. Then, the atomized reaction materials flow through the baffling area 120 and react, the first baffle part 13 in the baffling area 120 can change the flow path of the reaction materials, so that the mixing effect of the reaction materials is improved, the mass transfer efficiency of the reaction materials is further improved, the chemical reaction is facilitated to be carried out and the heat transfer is facilitated, the occurrence of side reactions is reduced, and the production efficiency is improved. In the process, the cold and hot medium liquid inlet pipe 15 continuously introduces cold and hot medium into the shell 1, and the cold and hot medium absorbs or releases heat and then flows out of the cold and hot medium liquid outlet pipe 16, so that heat generated in the reaction process of the reaction materials is taken away in time, or heat required by the reaction is provided for the reaction materials in time.

In summary, in this embodiment, on one hand, the micro-distributor 5 with a special structure is designed to increase the contact area of the reaction materials, and on the other hand, the atomization section 110 is designed to realize the atomization of the reaction materials, so as to further increase the contact area of the reaction materials, thereby improving the mass transfer efficiency of the reaction materials after entering the reaction tube 11, reducing the occurrence of side reactions in the reaction tube 11, improving the production efficiency and purity of the product, and realizing rapid production.

Example two

The present embodiment differs from the first embodiment only in that: in this embodiment, the first baffle 13 has a different structure from the first baffle 13 in the first embodiment, as shown in fig. 6, in this embodiment, the first baffle 13 includes a baffle a18 and a baffle b19, a diversion trench 181 is provided in the middle of the baffle a18, the projection of the baffle b19 on the baffle a18 completely covers the diversion trench 181, and the baffle a18 and the baffle b19 form two "Z" flow channels in the baffle area 120.

In practical use of this embodiment, after the reactant flows through the atomizing section 110 to achieve atomization, the atomized reactant flows in a Z-shaped shearing manner under the guiding action of the baffle plate a18 and the baffle plate b19, specifically, a part of reactant flows through the upper part of the baffle plate b19 after flowing through the guiding slot 181, another part of reactant flows through the lower part of the baffle plate b19 after flowing through the guiding slot 181, and finally, the two parts of reactant flow through the next guiding slot 181 after converging, so that the reactant can flow in a Z-shaped shearing manner in the baffling area 120, thereby increasing the contact area of the reactant and improving the mass transfer efficiency of the reactant.

Example III

The present embodiment is different from the second embodiment in that: the first baffle 13 in this embodiment is different from the first baffle 13 in the second embodiment in structure, as shown in fig. 7, the first baffle 13 in this embodiment includes a rotating shaft 20 and a plurality of blades 21 coaxially and fixedly connected to the rotating shaft 20, the rotating shaft 20 is rotatably connected to the inner wall of the baffle area 120, in this embodiment, the number of the blades 21 is six, and the six blades 21 are welded to the rotating shaft 20.

When this embodiment in actual use, the reaction material flows through atomizing section 110 and realizes the atomizing back, obtains high-speed atomizing material, and high-speed atomizing material strikes on blade 21 to drive blade 21 and pivot 20 rotation, pivoted blade 21 can change the flow path of reaction material, and then realizes the vortex to the reaction material, improves the mixing effect of reaction material, and then improves the mass transfer efficiency of reaction material.

Example IV

The present embodiment is different from the second embodiment in that: as shown in fig. 8, in this embodiment, the atomizing section 110 further includes a second contracting section 114, and the second contracting section 114 is located at the right end of the expanding section 113.

Compared with the embodiment, in the embodiment, the design of the second contraction section 114 avoids the direct impact of the high-speed atomized material in the right angle formed between the baffle plate a18 and the inner wall of the reaction tube 11, so that the staff can conveniently wash the microchannel reaction unit after the reaction is finished.

Example five

The present embodiment differs from the fourth embodiment only in that: as shown in fig. 9, in the present embodiment, the second baffle 22 is disposed in the second constriction 114, and the second baffle 22 in the present embodiment is a cylinder, and the projection of the axis of the cylinder and the axis of the reaction tube 11 on the horizontal plane are perpendicular to each other.

In practical use of this embodiment, the second baffle member 22 located in the second constriction section 114 can perform primary turbulence on the atomized reaction material, change the flow path of the reaction material, increase the mixing effect of the reaction material, improve the mass transfer efficiency of the reaction material, and along with the continuous flow of the reaction material along the reaction column 11, the first baffle member 13 located in the baffle zone 120 can implement secondary turbulence on the reaction material, so that the reaction material performs Z-shaped shearing flow in the baffle zone 120, thereby increasing the contact area of the reaction material and further improving the mass transfer efficiency of the reaction material.

Example six

The present embodiment differs from the fifth embodiment only in that: the structure of the second baffle 22 in the present embodiment is different from that of the second baffle 22 in the fifth embodiment, as shown in fig. 10, the second baffle 22 in the present embodiment includes a rotating shaft 20 and a plurality of blades 21 coaxially and fixedly connected to the rotating shaft 20, the rotating shaft 20 is rotatably connected to the inner wall of the second contraction section 114, in the present embodiment, the number of the blades 21 is six, and the six blades 21 are welded to the rotating shaft 20.

In practical use of this embodiment, the reaction material flows through the first contraction section 111, the first throat section 112 and the second expansion section 113 of the atomization section 110, so that the high-speed atomized material is formed and impacted on the blade 21, the blade 21 drives the rotating shaft 20 to rotate, the rotating blade 21 disturbs the flow of the reaction material, thereby changing the flow path of the reaction material, increasing the mixing effect of the reaction material, improving the mass transfer efficiency of the reaction material, and along with the continuous flow of the reaction material along the reaction tube 11, the first baffle 13 in the baffle area 120 can realize the secondary turbulence of the reaction material, so that the reaction material makes Z-shaped shearing flow in the baffle area 120, thereby increasing the contact area of the reaction material and further improving the mass transfer efficiency of the reaction material.

Example seven

The present embodiment differs from the fourth embodiment only in that: as shown in fig. 11, in this embodiment, a third baffle member 23 is disposed in the flow guiding groove 181, the third baffle member 23 in this embodiment is a cylinder, the cylinder is horizontally disposed in the flow guiding groove 181, and the projection of the axis of the cylinder and the axis of the reaction pipeline 6 on the horizontal plane is mutually perpendicular.

In practical use of the embodiment, the third baffle member 23 in the flow guiding groove 181 can shunt the reaction material flowing through the flow guiding groove 181, change the flow path of the reaction material, and enable the reaction material to partially flow back under the action of the third baffle member 23 in the process of performing Z-shaped shearing flow in the flow guiding area 120, thereby further increasing the mixing effect of the reaction material and improving the mass transfer efficiency of the reaction material.

Example eight

The present embodiment differs from the seventh embodiment only in that: the third baffle 23 in this embodiment is different from the third baffle 23 in the seventh embodiment in structure, as shown in fig. 12, the third baffle 23 in this embodiment includes a rotating shaft 20 and a plurality of blades 21 coaxially and fixedly connected to the rotating shaft 20, the rotating shaft 20 is rotatably connected to the inner wall of the baffle area 120, in this embodiment, the number of the blades 21 is six, and the six blades 21 are welded to the rotating shaft 20.

When the embodiment is actually used, the reactant flows through the diversion trench 181, the reactant impacts on the blade 21, the blade 21 drives the rotating shaft 20 to rotate, and the rotating blade 21 changes the flow path of the reactant, so that the reactant can further change the flow path under the action of the third baffle 23 in the Z-shaped shearing flow process in the baffle area 120, thereby further increasing the mixing effect of the reactant and improving the mass transfer efficiency of the reactant.

Example nine

The present embodiment differs from the eighth embodiment only in that: as shown in fig. 13, in the embodiment, a second baffle 22 is disposed in the second contraction section 114, the second baffle 22 is a cylinder, or the second baffle 22 includes a rotating shaft 20 and a plurality of blades 21 coaxially and fixedly connected to the rotating shaft 20, the rotating shaft 20 is rotatably connected to the inner wall of the second contraction section 114, the second baffle 22 is selected in the embodiment, and the number of the blades 21 is six; six blades 21 are welded to the shaft 20.

In practical use of this embodiment, the reactant flows through the first constriction 111, the throat 112 and the expansion 113 of the atomizing section 110, so that a high-speed atomized material is formed and is impacted on the blade 21, the blade 21 drives the rotating shaft 20 to rotate, and the rotating blade 21 disturbs the flow of the reactant, so that the flow path of the reactant is changed, and the mixing effect of the reactant is increased. Then, the reaction materials flow through the baffling area 120, and under the turbulent flow action of the first baffle member 13 and the third baffle member 23, the mixing effect of the reaction materials is further improved, so that the mass transfer efficiency of the reaction materials is improved.

Examples ten

The present embodiment differs from the seventh embodiment only in that: as shown in fig. 14, in this embodiment, the second baffle member 22 is disposed in the second contraction section 114, and the second baffle member 22 is a cylinder, or the second baffle member 22 includes a rotating shaft and a plurality of blades coaxially and fixedly connected to the rotating shaft, in this embodiment, the second baffle member 22 is a cylinder, and the cylinder is horizontally disposed in the second contraction section 114, and the projection of the axis of the cylinder and the axis of the reaction tube 11 on the horizontal plane is mutually perpendicular.

In practical use of this embodiment, after the reaction material flows through the first constriction 111, the throat 112 and the expansion 113 of the atomization section 110, a high-speed atomized material is obtained, the high-speed atomized material is partially refluxed under the action of the second baffle 22, the flow path of the high-speed atomized material is changed, and then, the reaction material flows through the baffle 120, and under the turbulent action of the first baffle 13 and the third baffle 23, the mixing effect of the reaction material is further increased, so as to improve the mass transfer efficiency of the reaction material.

Example eleven

The present embodiment differs from any one of the first to tenth embodiments only in that: the structure of the separator 8 in this embodiment is different, and as shown in fig. 15, in this embodiment, the number of the lateral portions 810 is five, the number of the vertical portions 820 is six, and the gap value between two adjacent lateral portions 810 is 2.5mm. The transverse portion 810 is provided with a plurality of bending portions 811, and the bending portions 811 are square.

In this embodiment, the bending portion 811 on the transverse portion 810 can make the reactant material form a film material with undulation in the distribution cavity 710, so as to further increase the contact area of the two reactant materials, and further improve the mass transfer efficiency of the reactant materials.

Example twelve

This embodiment differs from embodiment eleven only in that: as shown in fig. 16, the bending portion 811 in this embodiment has a semicircular shape.

The present embodiment provides another shape of the bending portion 811, and the bending portion 811 in the present embodiment is semicircular, so that the appearance is smoother, and the reaction material is more beneficial to forming a film-like material with undulation in the distribution chamber 710.

Example thirteen

The present embodiment differs from any one of the first to tenth embodiments only in that: as shown in fig. 17, in the present embodiment, the number of the lateral portions 810 is five, the number of the vertical portions 820 is six, and the gap value between two adjacent lateral portions 810 is 2.5mm. The transverse portions 810 are wavy, two transverse portions 810 arranged at intervals are arranged in parallel, and two adjacent transverse portions 810 are arranged in mirror symmetry.

In this embodiment, the wavy transverse portion 810 can make the reactant material entering the distribution chamber 710 form a film material with larger undulation, so as to further increase the contact area of the reactant material and further improve the mass transfer efficiency of the reactant material.

The above embodiments are merely illustrative of the principles of the present invention and its effectiveness, and are not intended to limit the invention. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the invention. Accordingly, it is intended that all equivalent modifications and variations of the invention be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.

Claims (10)

1. A microchannel rapid reactor comprising a housing, characterized in that: the shell is internally provided with a plurality of micro-channel reaction units, each micro-channel reaction unit comprises a micro-distributor and a reaction pipeline, a cavity is formed in the micro-distributor, a partition piece is arranged in the cavity and divides the cavity into a plurality of independent distribution cavities, each partition piece comprises a plurality of transverse parts and a plurality of vertical parts, and two adjacent transverse parts are connected through the vertical parts; the micro distributor is provided with at least two feed inlets which are communicated with the corresponding distribution cavities, and the end parts of the reaction pipelines are communicated with one end of the cavity away from the feed inlets; the partition piece can divide the inner space of the distribution cavity into a plurality of layers of spaces, so that the reactant materials flowing into the distribution cavity form a plurality of layers of materials, and the plurality of layers of materials formed by more than two types of reactant materials are alternately arranged.

2. The microchannel rapid reactor of claim 1, wherein: an atomization section is arranged in the reaction pipeline and sequentially comprises a first contraction section, a throat section and an expansion section along the material flow direction.

3. The microchannel rapid reactor of claim 2, wherein: a baffling area is arranged in the reaction pipeline, and a plurality of baffling pieces I are arranged in the baffling area.

4. A microchannel rapid reactor according to claim 3, wherein: the first baffle part is a cylinder, the cylinder is horizontally arranged in the baffle area, and the axis of the cylinder is intersected with the projection of the axis of the reaction pipeline on the horizontal plane;

or the first baffle piece comprises a baffle plate a and a baffle plate b, the middle part of the baffle plate a is provided with a diversion trench, and the baffle plate a and the baffle plate b form two Z-shaped flow channels in a baffle area;

or, the first baffle part comprises a rotating shaft and a plurality of blades coaxially and fixedly connected to the rotating shaft, and the rotating shaft is rotatably connected to the inner wall of the baffle area.

5. The microchannel rapid reactor of claim 4, wherein: the atomizing section also comprises a second contraction section, and the second contraction section is positioned at one end of the expansion section far away from the laryngeal opening section.

6. The microchannel rapid reactor of claim 5, wherein: and a second baffle piece is arranged in the second contraction section.

7. The microchannel rapid reactor of claim 6, wherein: the second baffle part is a cylinder which is horizontally arranged in the second contraction section, and the axis of the cylinder is intersected with the projection of the axis of the reaction pipeline on the horizontal plane;

or, the second baffle part comprises a rotating shaft and a plurality of blades coaxially and fixedly connected to the rotating shaft, and the rotating shaft is rotatably connected to the inner wall of the second contraction section.

8. The microchannel rapid reactor according to claim 4 or 6, wherein: and a third baffle piece is arranged in the diversion trench.

9. The microchannel rapid reactor of claim 8, wherein: the third baffle piece is a cylinder, the cylinder is horizontally arranged in the diversion trench, and the axis of the cylinder is intersected with the projection of the axis of the reaction pipeline on the horizontal plane;

or, the third baffle part comprises a rotating shaft and a plurality of blades coaxially and fixedly connected to the rotating shaft, and the rotating shaft is rotationally connected to the inner wall of the baffle area.

10. The microchannel rapid reactor of claim 1, wherein: the transverse part is provided with a plurality of bending parts.