CN212680977U

CN212680977U - Reactor

Info

Publication number: CN212680977U
Application number: CN202020139361.5U
Authority: CN
Inventors: 李光
Original assignee: Nantong Haiqing Pharmaceutical Technology Co ltd
Current assignee: Nantong Haiqing Pharmaceutical Technology Co ltd; University of Nottingham Ningbo China
Priority date: 2020-01-20
Filing date: 2020-01-20
Publication date: 2021-03-12
Anticipated expiration: 2030-01-20

Abstract

The utility model provides a pair of reactor, include: reaction vessel and setting are in inside stirring portion and the pivot of reaction vessel, stirring portion with reaction vessel coaxial coupling, the pivot set up in the bottom of stirring portion, and with stirring portion fixed connection, reaction vessel's internal surface and the surface of stirring portion constitute two fluid flow behaviors completely different but the reaction space of intercommunication each other. The utility model provides a pair of reactor, the cylindricality stirring body of its stirring portion can provide characteristics such as different intensity fluid shears and micromixs with the stirring disc, and wherein the stirring disc is responsible for providing high intensity shear and quick micromixs, and the fluid shear strength that the cylindricality stirring body produced is mild, the backmixing is little to can satisfy chemical reaction in the special demand of different stages to flow, shear and mix, can provide sufficient long dwell time simultaneously.

Description

Reactor

Technical Field

The utility model relates to a mechanical stirring reaction unit technical field, in particular to reactor.

Background

The mechanical stirring reactor is a common device in chemical production and mainly comprises a container, a motor driving device and a stirring rotor, wherein the common stirring rotor is an impeller with various shapes. When the stirring rotor rotates, the materials in the container move under the driving of the stirring rotor to form vortexes of various sizes, so that the transfer, mixing and reaction of the materials are realized. The structure of the reactor container and the stirring rotor is a key factor for controlling the flow pattern, the speed and the direction of the materials in the container and the multi-scale vortex dynamics behavior, and directly influences the mixing, the chemical reaction rate and the conversion rate, even the molecular structure and the like. The impeller type stirring reactor has the advantages of simple structure, wide application range, low manufacturing cost, high mixing speed and the like, but the flow field structure in the impeller type stirring reactor is complex, local mixing is realized, the energy consumption distribution and the spatial distribution of the shearing rate are seriously uneven, for example, the shearing rate near the impeller is extremely high, and the shearing rate of other main body regions is low. Aiming at the defects of an impeller stirring reactor, a Taylor reactor is developed, the Taylor reactor consists of a columnar rotor and a cylindrical container, when the columnar rotor rotates at a low speed, the flow is laminar, when the rotating speed of the columnar rotor is increased and exceeds a certain value, the fluid in an annular space can form vortexes which are orderly arranged along the axial direction of the container under the action of centrifugal force, the rotating speed is continuously increased, and the flow is transited to full turbulence. The Taylor reactor has the advantages of controllable flow pattern, small back mixing, uniform flow field shearing and the like, can keep a stable and controllable flow pattern at low speed, and has small back mixing. However, in order to improve the local micromixing, the rotation speed is increased, and the high rotation speed can destroy the regular flow pattern, increase the back mixing, and possibly damage the selectivity of the reaction and the production efficiency.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a reactor realizes the quick homogeneous mixing of reaction liquid through high-speed fluid shear, guarantees simultaneously that fluid shear is gentle, the flow pattern is regular, the little flow characteristic of backmixing to realize the complete reaction of reaction liquid.

In one aspect, the present invention provides a reactor comprising: the stirring part is coaxially connected with the reaction container, and the rotating shaft is arranged at the bottom of the stirring part and is fixedly connected with the stirring part;

the reaction vessel comprises a first cylindrical vessel and a second cylindrical vessel, the diameter of the first cylindrical vessel is smaller than that of the second cylindrical vessel, and the first cylindrical vessel and the second cylindrical vessel are connected and communicated with each other; the stirring part comprises a cylindrical stirring body and a stirring disc, and the stirring disc is fixedly connected with the cylindrical stirring body.

According to a specific embodiment of the present invention, the cylindrical stirring body of the stirring part is located in the first cylindrical container, and the outer surface of the cylindrical stirring body and the inner surface of the first cylindrical container form a first fluid reaction space; the stirring disc is positioned in the second cylindrical container, and the outer surface of the stirring disc and the inner surface of the second cylindrical container form a second fluid reaction space.

According to a specific embodiment of the present invention, the connection mode of the stirring portion and the rotating shaft may be welding or threaded connection.

According to a specific embodiment of the present invention, the cross-section of the cylindrical stirring body may be circular or polygonal.

According to the utility model discloses a specific embodiment, first cylindrical container top is provided with the feed inlet, second cylindrical container bottom is provided with the discharge gate.

According to a specific embodiment of the present invention, the surface of the stirring part may be a smooth surface, or a rough surface with grooves, or protrusions or radial strips.

According to the utility model discloses a concrete embodiment, the cylindricality stirring body and the stirring disc of stirring portion structure as an organic whole, or connect through welding or screw thread.

According to an embodiment of the present invention, the cylindrical stirring body may be provided with a ring-shaped, a bar-shaped, or a rod-shaped inner member on the surface thereof.

According to the utility model discloses a concrete embodiment, pivot and driving motor electric connection.

According to an embodiment of the present invention, the material of the stirring portion may be metal, or ceramic or polymer material.

The utility model provides a pair of reactor, simple structure, preparation simple to operate, it is bulky to effectively use, and this reactor includes that two fluid flow behaviors are totally different but the reaction area of intercommunication each other, is first fluid reaction space and second fluid reaction space respectively, and wherein second fluid reaction space can provide high strength shearing and quick micro-mixing, can produce regular vortex structure and flow field with first fluid reaction space, and the backmixing is little, the shearing is even gentle. The columnar stirring body and the stirring disc of the stirring part can provide fluid shearing and micromixing with different strengths, wherein the stirring disc can shear more and mix micromixing more quickly, the back mixing of the columnar stirring body is small, the shearing strength of the fluid is mild, the special requirements of chemical reaction on flowing, shearing and mixing in different stages can be met, and meanwhile, enough long retention time can be provided. The reactor is suitable for the reaction process or the crystallization process with medium speed and above.

Drawings

Fig. 1 shows a cross-sectional view of a reactor according to an embodiment of the invention.

Fig. 2 shows a schematic structural view of the stirring part according to an embodiment of the present invention.

Fig. 3 shows a schematic structural view of a stirring disc surface-mounted annular inner member according to an embodiment of the present invention.

Fig. 4 shows a schematic structural view of a stirring disc surface mounted radial strip inner member according to an embodiment of the present invention.

Fig. 5 shows a schematic structural view of a cylindrical agitator surface-mounted annular inner member according to an embodiment of the present invention.

Fig. 6 shows a schematic structural view of a radial rod-shaped inner member mounted on the surface of a cylindrical stirrer according to an embodiment of the present invention.

Fig. 7 shows a schematic structural view of a radial strip-shaped inner member mounted on the surface of a cylindrical stirrer according to an embodiment of the present invention.

Reference numerals:

1-a reaction vessel; 2-a stirring section; 3-a rotating shaft; 4-a first cylindrical container; 5-a second cylindrical container; 6-cylindrical stirring body; 7-stirring disc; 8-driving a motor; 9-a first fluid reaction space; 10-a second fluid reaction space; 11-a feed inlet; 12-a discharge hole;

Detailed Description

The present invention will be described in detail below with reference to specific embodiments in order to make the concept and idea of the present invention more clearly understood by those skilled in the art. It is to be understood that the embodiments presented herein are only a few of all embodiments that the present invention may have. Those skilled in the art who review this disclosure will readily appreciate that many modifications, variations, and alternatives to those embodiments described below, in whole or in part, are possible and are contemplated as falling within the scope of the claimed invention.

As used herein, the terms "first," "second," and the like are not intended to imply any order, quantity, or importance, but rather are used to distinguish one element from another. As used herein, the terms "a," "an," and the like are not intended to mean that there is only one of the described items, but rather that the description is directed to only one of the described items, which may have one or more. As used herein, the terms "comprises," "comprising," and other similar words are intended to refer to logical interrelationships, and are not to be construed as referring to spatial structural relationships. For example, "a includes B" is intended to mean that logically B belongs to a, and not that spatially B is located inside a. Furthermore, the terms "comprising," "including," and other similar words are to be construed as open-ended, rather than closed-ended. For example, "a includes B" is intended to mean that B belongs to a, but B does not necessarily constitute all of a, and a may also include C, D, E and other elements.

The terms "embodiment," "present embodiment," "an embodiment," "one embodiment," and "one embodiment" herein do not mean that the pertinent description applies to only one particular embodiment, but rather that the description may apply to yet another embodiment or embodiments. It will be understood by those skilled in the art that any description made herein of one embodiment may be substituted, combined, or otherwise combined with the description made herein with respect to one or more other embodiments, and that the resulting new embodiments may be readily envisioned by those skilled in the art, and fall within the scope of the present disclosure.

Example 1

Referring to fig. 1, fig. 1 shows a cross-sectional view of a reactor according to an embodiment of the present invention, the reactor includes a reaction container 1, and a stirring portion 2 and a rotating shaft 3 disposed inside the reaction container 1, the stirring portion 2 is coaxially connected to the reaction container 1, and the rotating shaft 3 is disposed at the bottom of the stirring portion 2 and is fixedly connected to the stirring portion 2.

The reaction vessel 1 comprises a first cylindrical vessel 4 and a second cylindrical vessel 5, wherein the top of the first cylindrical vessel 4 is provided with a feed inlet 12, the bottom of the second cylindrical vessel 5 is provided with a discharge outlet 11, the feed inlet 12 is arranged on the end face of the first cylindrical vessel 4 on one side of a stirring shaft, preferably, the embodiment of the present invention arranges the feed inlet 12 in the region larger than the radius 1/2 of the stirring disc 7, the discharge outlet 11 is arranged on the end face of one side of the second cylindrical vessel 5, or on the side of which the distance from the bottom is smaller than the height 1/3 of the first cylindrical vessel 5. The diameter of the first cylindrical container 4 is smaller than that of the second cylindrical container 5, and the first cylindrical container 4 is connected with the second cylindrical container 5 and communicated with the second cylindrical container 5; stirring portion 2 includes cylindricality stirring body 6 and stirring disc 7, stirring disc 7 with cylindricality stirring body 6 fixed connection. The rotating shaft 2 is electrically connected with the driving motor 8, and the driving motor 8 drives the rotating shaft 2 to rotate, so that the stirring part 2 rotates and stirs. The cylindrical stirring body 6 of the stirring part 2 is positioned in the first cylindrical container 4, and the outer surface of the cylindrical stirring body 6 and the inner surface of the first cylindrical container 4 form a first fluid reaction space 9; the stirring disc 7 is positioned in the second cylindrical vessel 5, and the outer surface of the stirring disc 7 and the inner surface of the second cylindrical vessel 5 form a second fluid reaction space 10.

Fig. 2 shows a schematic structural diagram of a stirring part according to an embodiment of the present invention, as shown in fig. 2, the stirring part 2 is composed of a cylindrical stirring body 6 and a stirring disk 7, a diameter ratio between the cylindrical stirring body 6 of the stirring part 2 and the first cylindrical container 4 is between 0.8 and 0.95, and a maximum distance thereof is less than 50mm, preferably, the maximum distance of the embodiment of the present invention is between 5mm and 20 mm. The ratio of the length of the cylindrical stirring body 6 of the stirring part 2 to the distance from the surface of the cylindrical stirring body to the inner surface of the first cylindrical container 4 is more than 5, and preferably, the ratio of the distances is selected to be more than 10. The maximum distance between the surface of the stirring disk 7 of the stirring part 2 and the upper and lower end faces of the second cylindrical container 5 is less than 10mm, preferably, the embodiment of the present invention selects the maximum distance to be less than 1-5 mm. The ratio of the diameter of stirring disk 7 of stirring portion 2 and the diameter of the cylindricality stirring body 6 of stirring portion 2 is greater than 2, preferably, the embodiment of the utility model provides a select the ratio of diameter to be greater than 3.

The cylindrical stirring body 6 and the stirring disk 7 of the stirring part 2 can be of an integrated structure or connected through welding or threads, preferably, the embodiment of the invention selects a thread mode to connect. The cross section of the cylindrical stirring body 6 can be circular or polygonal, and preferably, the cross section of the cylindrical stirring body 6 is selected to be circular in the embodiment of the present invention. The surfaces of the stirring disks 7 and the cylindrical stirring bodies 6 of the stirring part 2 can be smooth surfaces or rough surfaces with special designs, such as circular grooves, circular protrusions or radial strips. The connection mode of stirring portion 2 with pivot 3 can be welding or threaded connection, preferably, the embodiment of the utility model provides a select threaded connection. The material of the stirring section 2 may be metal, ceramic, or polymer. The rotating speed of the stirring part 2 is 10-2000rpm, preferably, the rotating speed of the embodiment of the invention is 50-200 rpm.

Example 2

In order to make the present invention easier to understand and implement for those skilled in the art, a method for using the technical solution of the present invention is described in detail below by an example.

The surfaces of the cylindrical stirring bodies and the stirring disks of the stirring section may be provided with various inner members such as, but not limited to, annular rings, bars or rods. In order to enhance mixing and control back mixing, the embodiment of the present invention respectively installs inner members with different structures on the outer surfaces of the stirring disk 7 and the cylindrical stirring body 6 of the stirring part 2, as shown in fig. 3 and fig. 4, the inner member shown in fig. 3 is an annular inner member, the inner member shown in fig. 4 is a radial strip-shaped inner member, and fig. 5-7 are schematic structural diagrams of different inner members installed on the surface of the cylindrical stirring body of the stirring part, wherein the inner member shown in fig. 5 is an annular inner member, the inner member shown in fig. 6 is a radial rod-shaped inner member, the inner member shown in fig. 7 is a radial strip-shaped inner member, when the reaction liquid enters the second fluid reaction space 10 of the reaction vessel 1 through the feeding port 12, the rapid and uniform mixing is realized by the high-speed shearing generated by the rotation of the stirring disk 7, and starting the reaction, wherein the residence time is short, so that the reactants and partial products after primary mixing enter a first fluid reaction space 9 of the reaction container 1, the space has a regular flow pattern, mild fluid shear and small back mixing, the residence time is long so as to realize complete reaction, and finally the reactants and partial products flow out of a discharge hole 11.

The utility model provides a pair of reactor, simple structure, preparation simple to operate, the cylindricality stirring body of its stirring portion can provide the fluid shear and the micromixing of different intensity with the stirring disc, and wherein the stirring disc can cut more greatly and more fast micromixing, and the backmixing of the cylindricality stirring body is little, fluid shear strength is mild, can satisfy chemical reaction to flow, cut and the special demand of mixing in different stages, can provide sufficient dwell time simultaneously.

The concepts, principles and concepts of the present invention have been described above in detail in connection with specific embodiments (including examples and illustrations). It should be understood by those skilled in the art that the embodiments of the present invention may be embodied in many different forms and that various changes, modifications, substitutions and equivalents of the steps, methods, devices and components described in the above embodiments may be made by those skilled in the art after reading the present specification and should be considered as falling within the scope of the present invention. The protection scope of the present invention is subject to the claims only.

Claims

1. A reactor, comprising: the stirring part is coaxially connected with the reaction container, and the rotating shaft is arranged at the bottom of the stirring part and is fixedly connected with the stirring part;

2. The reactor according to claim 1, wherein the cylindrical stirring body of the stirring section is located inside the first cylindrical vessel, and an outer surface of the cylindrical stirring body and an inner surface of the first cylindrical vessel constitute a first fluid reaction space; the stirring disc is positioned in the second cylindrical container, and the outer surface of the stirring disc and the inner surface of the second cylindrical container form a second fluid reaction space.

3. The reactor according to claim 1, wherein the stirring part is connected with the rotating shaft by welding or screwing.

4. The reactor according to claim 1, wherein the cross-section of the cylindrical stirring body can be circular or polygonal.

5. The reactor of claim 1, wherein the top of the first cylindrical vessel is provided with a feed inlet, and the bottom of the second cylindrical vessel is provided with a discharge outlet.

6. The reactor according to claim 1, wherein the surface of the stirring section may be a smooth surface or a rough surface with grooves, or protrusions or radial stripes.

7. The reactor according to claim 1, wherein the cylindrical stirring body and the stirring disk of the stirring section are of an integral structure or are connected by welding or screwing.

8. The reactor according to claim 1, wherein the surface of the cylindrical stirring body is provided with a ring-shaped, a strip-shaped or a rod-shaped inner member.

9. The reactor of claim 1, wherein the shaft is electrically connected to a drive motor.

10. The reactor according to claim 1, wherein the material of the stirring part is metal, ceramic or polymer material.