CN111939865A - Integral oscillatory flow reactor - Google Patents
Integral oscillatory flow reactor Download PDFInfo
- Publication number
- CN111939865A CN111939865A CN202010846037.1A CN202010846037A CN111939865A CN 111939865 A CN111939865 A CN 111939865A CN 202010846037 A CN202010846037 A CN 202010846037A CN 111939865 A CN111939865 A CN 111939865A
- Authority
- CN
- China
- Prior art keywords
- fluid
- integral
- pipeline
- flow reactor
- support
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/28—Moving reactors, e.g. rotary drums
- B01J19/285—Shaking or vibrating reactors; reactions under the influence of low-frequency vibrations or pulsations
Abstract
The invention relates to the technical field of reactors and discloses an integral oscillatory flow reactor which comprises a shaking table, a support and a fluid pipeline, wherein the support is arranged at the top of the shaking table, the fluid pipeline is arranged on the support, and the shaking direction of the shaking table is consistent with the arrangement direction of the pipeline. The fluid pipeline is arranged on the support, the shaking table drives the fluid pipeline to shake on the shaking table through the support when shaking, all fluids in the fluid pipeline are directly shaken under the action of the inertia force of the shaking table, the inertia force applies an oscillating flow with periodic change to the fluids, and the oscillating flow and the original flow velocity of the fluids are superposed to disturb the flow field of the fluids, so that the mixing of the fluids is enhanced; in addition, the shaking of the shaking table is applied to the whole pipeline, the arrangement direction of the pipeline is consistent with the shaking direction of the shaking table, the oscillating flow generated by the shaking of the shaking table is not attenuated along the length direction of the pipeline and is not influenced by bubbles in the pipeline, and the mixing effect of the fluid is ensured.
Description
Technical Field
The invention relates to the technical field of reactors, in particular to an integral oscillatory flow reactor.
Background
The continuous reactor based on the micro-pipeline has the advantages of high heat and mass transfer speed, controllable multiphase flow, safe process, low equipment cost, simple operation, rapid amplification and the like, and is widely applied to the field of synthesis of fine chemicals and medical materials.
In order to enhance the mixing of the fluid in the pipeline, it is common to provide some mixing structures in the pipeline, such as bending, deforming, etc. the pipeline, or to provide static mixing components, baffles, etc. in the pipeline, which can cut the fluid or generate local vortex when the fluid passes through, so as to enhance the mixing of the fluid. However, the above method has two disadvantages, firstly, the tiny pipeline itself is easily blocked by solid particles, and the mixed structure further increases the risk of pipeline blockage; secondly, the mixing method is extremely dependent on the flow rate of the fluid, and has a good mixing effect only when the flow rate is high, so that the operation elasticity is poor, the operation window is narrow, and the process requiring a long fluid retention time is not facilitated.
The active mixer disturbs fluid or forms local vortex in the pipeline through an external field (such as ultrasound, an electromagnetic field and pressure fluctuation), so that the mixing of the fluid can be enhanced. In addition, the mixing effect of the method is mainly determined by the strength of an external field and does not depend on the flow velocity of the fluid, so that the mixing effect and the retention time of the fluid can be separately adjusted, the operation interval is large, the elasticity is good, and the method is suitable for low-flow-velocity or high-flow-velocity operation. Although the active mixing based on ultrasonic and electromagnetic fields proves to be very effective, the reactor has a complex structure and needs expensive ultrasonic or electromagnetic generating devices, so that the amplification and the application and the popularization are difficult.
The method of creating an oscillating flow in a pipe using pressure disturbances is considered to be the most promising method for industrial application compared to other active mixing methods. The method utilizes an oscillatory flow device to generate flow (oscillatory flow) with periodically changing flow speed in a pipeline, and the oscillatory flow is superposed with the original stable flow with constant flow speed, so that the flow field can be disturbed and the mixing of the fluid can be enhanced. This method is often combined with passive mixing structures, such as baffles or kinks in the pipe, where the oscillating flow creates local vortices as it passes through the structures, further enhancing fluid mixing.
For example, patent application CN103328092B discloses an oscillatory flow microreactor, and US6429268 discloses a phase separation synthesis method and apparatus using an oscillatory flow device, typically a piston pump or diaphragm pump connected to the inlet of a conduit, the check valve of which is removed, and the piston or diaphragm of which reciprocates periodically to generate periodic pressure (flow rate) fluctuations in the conduit.
The above-described method of generating an oscillating flow has a serious drawback in that the amplitude of the oscillating flow is attenuated along the length of the pipe since the oscillating flow is generated at the inlet of the pipe. Especially when a small amount of bubbles exist in the fluid pipeline, the gas can dissipate the energy of the oscillating flow due to larger compressibility, so that the intensity of the oscillating flow is greatly attenuated along the direction of the pipeline, and the mixing effect of the method is greatly reduced. Some researchers have placed a source of pressure oscillations in the pipeline every other length of pipe, but this approach adds complexity and cost to the device and does not completely address the problem of energy attenuation caused by bubbles.
Disclosure of Invention
The purpose of the invention is: an integral oscillatory flow reactor is provided to solve the problems that in the prior art, an oscillatory source is arranged at the inlet of a fluid pipeline, and the intensity of oscillatory flow is attenuated violently along the pipeline direction by bubbles in the pipeline, so that the mixing effect is weakened.
In order to achieve the above object, the present invention provides an integral oscillatory flow reactor comprising a rocking bed, a support and a fluid conduit, wherein the support is arranged on the top of the rocking bed, the fluid conduit is arranged on the support, and the rocking direction of the rocking bed is consistent with the arrangement direction of the conduit.
Preferably, the fluid conduit comprises a main body section and a neck section having a smaller inner diameter than the main body section.
Preferably, the neck sections are arranged at intervals along the arrangement direction of the fluid pipelines, and the interval between two adjacent neck sections is larger than the diameter of the main body section.
Preferably, the diameter of the neck section is 10% -80% of the diameter of the body section.
Preferably, the stent includes struts arranged at intervals in an arrangement direction of fluid conduits, the fluid conduits being wound around the struts, the constricted sections being arranged at contact positions of the fluid conduits with the struts.
Preferably, the stent includes struts arranged at intervals perpendicular to an arrangement direction of the fluid conduits, the intervals between the struts being smaller than a diameter of a main body section of the fluid conduits, the fluid conduits being sandwiched between the struts, the neck sections being arranged at contact positions of the fluid conduits and the struts.
Preferably, an oscillating ball is further arranged in the fluid conduit, and the density of the oscillating ball is different from the density of the fluid in the fluid conduit.
Preferably, the oscillating ball has a diameter of 10-90% of the diameter of the fluid conduit.
Preferably, the shaking table oscillates at a frequency of 0 to 1000Hz and the shaking table has an amplitude of 1 to 100 mm.
Preferably, the support is a cylinder structure, the cylinder structure is a circle or a polygon, and the equivalent diameter of the cylinder structure is 0.5-100 times of the diameter of the fluid pipeline.
Compared with the prior art, the integral oscillatory flow reactor provided by the embodiment of the invention has the beneficial effects that: the fluid pipeline is arranged on the support, the shaking table drives the fluid pipeline to shake on the shaking table through the support when shaking, all fluids in the fluid pipeline are directly shaken under the action of the inertia force of the shaking table, the inertia force applies an oscillating flow with periodic change to the fluids, and the oscillating flow and the original flow velocity of the fluids are superposed to disturb the flow field of the fluids, so that the mixing of the fluids is enhanced; in addition, the shaking of the shaking table is applied to the whole pipeline, the arrangement direction of the pipeline is consistent with the shaking direction of the shaking table, the oscillating flow generated by the shaking of the shaking table is not attenuated along the length direction of the pipeline and is not influenced by bubbles in the pipeline, and the mixing effect of the fluid is ensured.
Drawings
FIG. 1 is a schematic diagram of the structure of an integral oscillatory flow reactor of the present invention;
FIG. 2 is a schematic view of a partial structure at the fluid conduits and legs of the integral oscillatory flow reactor of FIG. 1;
FIG. 3 is a schematic diagram of the structure of example 2 of the integral oscillatory flow reactor of the present invention;
FIG. 4 is a schematic diagram of the structure of example 3 of the integral oscillatory flow reactor of the present invention;
FIG. 5 is a schematic diagram of the structure of example 4 of the integral oscillatory flow reactor of the present invention.
In the figure, 1, a shaking table; 2. a support; 21. a pillar; 3. a fluid conduit; 31. a main body section; 32. a necking section; 4. the ball is oscillated.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
Example 1 of an integral oscillatory flow reactor according to the present invention, as shown in fig. 1 and fig. 2, the integral oscillatory flow reactor comprises a rocking bed 1, a support 2 and a fluid conduit 3, wherein the support 2 is fixedly arranged on the top of the rocking bed 1, the fluid conduit 3 is arranged on the support 2, the arrangement direction of the fluid conduit 3 is consistent with the rocking direction of the rocking bed 1, the intensity of the oscillatory flow formed at this time is the maximum, and the arrangement direction of the fluid conduit 3 refers to the extension direction of the part of most length (more than half) of the fluid conduit 3.
The shaking table 1 can be a shaking table which is common in laboratories or industry, the shaking table 1 comprises a motor, a swinging mechanism and a bed body, the motor drives the bed body to oscillate back and forth through the swinging mechanism, and the swinging mechanism can be a link mechanism. The shaking table 1 can be a reciprocating shaking table with a linear oscillation track, a circular shaking table with an elliptical or circular oscillation track, or other shaking tables with irregular three-dimensional tracks. The shaking table 1 has an oscillation frequency of 0-1000 Hz and the shaking table 1 has an oscillation amplitude of 1-100 mm.
The bracket 2 is a column structure, and the bracket 2 is vertically fixed on the top of the shaking table 1. The support 2 includes a plurality of struts 21, and the struts 21 are arranged at intervals along the extending direction of the fluid conduit 3 according to the arrangement form of the fluid conduit 3, and the struts 21 may also be arranged in pairs, with the fluid conduit 3 interposed between the pairs of struts 21. The cross-section of the pillar 21 is circular or polygonal, the equivalent diameter of the pillar 21 is 0.5-100 times the diameter of the fluid conduit 3, and when the pillar 21 is cylindrical, the equivalent diameter of the pillar 21 is the diameter of the cylinder.
The fluid pipe 3 is fixed on the bracket 2, and the fluid pipe 3 can be a metal pipe or a polymer plastic pipe, preferably a polytetrafluoroethylene pipe with certain elasticity. An inlet and an outlet are respectively arranged at two ends of the fluid pipeline 3, a main body section 31 and a necking section 32 are formed between the inlet and the outlet of the fluid pipeline 3, the inner diameter of the main body section 31 is the same as that of the inlet and the outlet, and the inner diameter of the necking section 32 is smaller than that of the main body section 31, namely, a local necking is formed at the necking section 32. The plurality of the necking sections 32 are arranged at intervals along the arrangement direction of the fluid pipeline 3, the necking sections 32 and the main body section 31 are arranged for the first time along the arrangement direction of the fluid pipeline 3, the interval between every two adjacent necking sections 32 is larger than the diameter of the main body section 31, the diameter of the main body section 31 is 0.1-100 mm, and the diameter of each necking section 32 is 10% -80% of the diameter of the main body section 31. The fluid forms a local vortex when passing through the neck section 32, which further enhances the mixing effect.
In example 1, as shown in FIGS. 1 to 2, the rocking platforms 1 are reciprocating rocking platforms having a linear oscillation path, the fluid conduits 3 are arranged extending along the length of the rocking platforms 1, and the rocking platforms 1 oscillate along the length, i.e., the arrangement direction of the fluid conduits 3 is parallel to the oscillation direction of the rocking platforms 1. The support 2 comprises a plurality of pillars 21 arranged in a racetrack shape, the fluid conduit 3 is wound around and arranged outside the pillars 21, and the necking section 32 of the fluid conduit 3 is arranged at the contact position of the fluid conduit 3 and the pillars 21, namely, a necking is formed at the corner position of the fluid conduit 3.
Example 2 of the integral oscillatory flow reactor of the present invention, as shown in fig. 3, differs from example 1 in that the support 2 further comprises the paired support struts 21 arranged at intervals in the direction perpendicular to the arrangement direction of the fluid conduit 3, the interval between the two support struts 21 is smaller than the diameter of the main body section 31 of the fluid conduit 3, the paired support struts 21 are arranged between the support struts 21 at both ends of the rocking bed 1, the conduit is sandwiched between the paired support struts 21 after passing through the paired support struts 21, and then the necking section 32 is arranged at the contact position of the fluid conduit 3 and the paired support struts 21, that is, the fluid conduit 3 forms a necking between the paired support struts 21.
Example 3 of the integral oscillatory flow reactor of the present invention, as shown in FIG. 4, is different from example 1 in that an oscillatory ball 4 is further disposed in the fluid conduit 3, the density of the oscillatory ball 4 is different from that of the fluid in the fluid conduit, and the oscillatory ball 4 is shaken with the rocking bed 1 in the conduit by the rocking bed 1. The oscillating ball 4 is a solid ball, the oscillating ball 4 is usually a metal ball, and a polytetrafluoroethylene protective layer can be plated on the outer surface of the metal ball in order to increase the corrosion resistance of the metal ball. The diameter of the oscillating ball 4 is 10% -90% of the diameter of the main body section 31 of the fluid pipeline 3, and the oscillating ball 4 has a different shaking speed from the fluid due to the difference between the density of the oscillating ball 4 and the density of the fluid in the fluid pipeline, so that the fluid can be further stirred and mixed.
Example 4 of the integral type oscillatory flow reactor of the present invention, as shown in FIG. 5, differs from example 1 in that the rocking bed 1 is a circular rocking bed whose oscillation locus is circular, in which the direction of the arrow is the oscillation direction of the rocking bed 1, a plurality of struts 21 of the support 2 are formed in a ring shape and arranged at intervals in the circumferential direction of the rocking bed 1, and the fluid conduits 3 are arranged to be wound around the outer sides of the struts 21.
To sum up, the embodiment of the present invention provides an integral oscillatory flow reactor, wherein a fluid pipeline is arranged on a support, a shaking table drives the fluid pipeline to shake on the shaking table through the support when shaking, all fluids in the fluid pipeline directly shake under the action of an inertial force of the shaking table, the inertial force applies a periodically changing oscillatory flow to the fluids, and the oscillatory flow and the original flow velocity of the fluids are superimposed to disturb a flow field of the fluids, so as to enhance the mixing of the fluids; in addition, the shaking of the shaking table is applied to the whole pipeline, the arrangement direction of the pipeline is consistent with the shaking direction of the shaking table, the oscillating flow generated by the shaking of the shaking table is not attenuated along the length direction of the pipeline and is not influenced by bubbles in the pipeline, and the mixing effect of the fluid is ensured.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (10)
1. An integral oscillatory flow reactor, comprising a rocking bed, a support and a fluid conduit, wherein said support is arranged on top of said rocking bed, said fluid conduit is arranged on said support, and the direction of rocking of said rocking bed is in accordance with the direction of arrangement of said conduit.
2. The integral oscillatory flow reactor of claim 1 wherein the fluid conduit comprises a main body section and a neck section having an inner diameter smaller than the main body section.
3. The integral oscillatory flow reactor of claim 2 wherein the plurality of neck sections are spaced apart along the direction of the arrangement of the fluid conduits, the spacing between two adjacent neck sections being greater than the diameter of the body section.
4. The integral oscillatory flow reactor of claim 2 wherein the diameter of the neck section is between 10% and 80% of the diameter of the body section.
5. The integral oscillatory flow reactor of claim 2 wherein the support comprises struts spaced apart along the direction of arrangement of fluid conduits wound thereon, the neck segments being arranged at the locations of contact of the fluid conduits with the struts.
6. The integral oscillatory flow reactor of claim 2 wherein the support comprises struts spaced apart perpendicular to the direction of disposition of the fluid conduits, the spacing between the struts being less than the diameter of the main body section of the fluid conduits, the fluid conduits being sandwiched between the struts, the constricted section being disposed at the location of contact of the fluid conduits with the struts.
7. The integral oscillatory flow reactor of any one of claims 1 to 6 further comprising an oscillatory ball disposed within the fluid conduit, the oscillatory ball having a density different from the density of the fluid within the fluid conduit.
8. The integral oscillatory flow reactor of claim 7 wherein the diameter of the oscillatory sphere is between 10% and 90% of the diameter of the fluid conduit.
9. The integral oscillatory flow reactor of any one of claims 1 to 6 wherein the rocking platforms oscillate at a frequency of 0 to 1000Hz and an amplitude of oscillation of the rocking platforms of 1 to 100 mm.
10. The integral oscillatory flow reactor according to any one of claims 1 to 6, characterized in that the support is a cylindrical structure, the cylindrical structure being circular or polygonal, the equivalent diameter of the cylindrical structure being 0.5 to 100 times the diameter of the fluid conduit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010846037.1A CN111939865A (en) | 2020-08-20 | 2020-08-20 | Integral oscillatory flow reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010846037.1A CN111939865A (en) | 2020-08-20 | 2020-08-20 | Integral oscillatory flow reactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111939865A true CN111939865A (en) | 2020-11-17 |
Family
ID=73358657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010846037.1A Pending CN111939865A (en) | 2020-08-20 | 2020-08-20 | Integral oscillatory flow reactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111939865A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0803287A1 (en) * | 1996-04-24 | 1997-10-29 | Naphtachimie S.A. | Method and device to reduce or prevent the deposit of solid particles on the internal wall of a conduit |
| CN2383579Y (en) * | 1998-09-11 | 2000-06-21 | 王辑五 | Continuous radiation, electronic beam and photochemical reaction equipment |
| CN206492493U (en) * | 2017-02-13 | 2017-09-15 | 湘潭大学 | Self-oscillation reactor |
| CN207221938U (en) * | 2017-09-22 | 2018-04-13 | 福建仁宏医药化工有限公司 | A kind of oscillator for being used to produce 2 chloropropionic acids of L |
-
2020
- 2020-08-20 CN CN202010846037.1A patent/CN111939865A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0803287A1 (en) * | 1996-04-24 | 1997-10-29 | Naphtachimie S.A. | Method and device to reduce or prevent the deposit of solid particles on the internal wall of a conduit |
| FR2747938A1 (en) * | 1996-04-24 | 1997-10-31 | Naphtachimie Sa | METHOD AND DEVICE FOR THERMALLY PROCESSING PRODUCTS CIRCULATING IN A CONDUIT |
| CN2383579Y (en) * | 1998-09-11 | 2000-06-21 | 王辑五 | Continuous radiation, electronic beam and photochemical reaction equipment |
| CN206492493U (en) * | 2017-02-13 | 2017-09-15 | 湘潭大学 | Self-oscillation reactor |
| CN207221938U (en) * | 2017-09-22 | 2018-04-13 | 福建仁宏医药化工有限公司 | A kind of oscillator for being used to produce 2 chloropropionic acids of L |
Non-Patent Citations (5)
| Title |
|---|
| 刘友平 等: "《理化基本技能训练》", 31 August 2014, 中国医药科技出版社 * |
| 刘晓烨 等: "《环境工程微生物学研究技术与方法》", 31 August 2011, 哈尔滨工业大学出版社 * |
| 左识之: "《精细化工反应器及车间工艺设计》", 30 November 1996, 华东理工大学出版社 * |
| 陈士瑜: "《菇菌生产技术全书》", 31 December 1999, 中国农业出版社 * |
| 龚卫星 等: "改善管式反应器内微观混合的途径", 《华东化工学院学报》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Paıdoussis et al. | Pipes conveying fluid: a model dynamical problem | |
| RU2568480C2 (en) | Closed pipeline flow straightener | |
| RU186315U1 (en) | MASS TRANSFER NOZZLE | |
| Wang et al. | Vibration and enhanced stability properties of fluid-conveying pipes with two symmetric elbows fitted at downstream end | |
| EP2175974A1 (en) | Hughes molecular mixer and catalytic reactor | |
| CN111939865A (en) | Integral oscillatory flow reactor | |
| Dain et al. | Dynamics of suspended particles in a two-dimensional high-frequency sonic field | |
| Knopf et al. | Pulsing to improve bubble column performance: I. Low gas rates | |
| JP2008119623A (en) | Loop flow type bubble generating nozzle | |
| Pai¨ doussis | 1992 Calvin Rice lecture: some curiosity-driven research in fluid structure interactions and its current applications | |
| Bork et al. | The impact of local phenomena on mass transfer in gas‐liquid systems | |
| Hasan et al. | Energy loss and developing length during reciprocating flow in a pipe with a free-end | |
| Sunol et al. | Effects of gravity level on bubble formation and rise in low-viscosity liquids | |
| Walzel | Effects and new applications of pulsed flow | |
| Knopf et al. | Pulsing to improve bubble column performance: II. Jetting gas rates | |
| Chen et al. | Dynamic behavior of a deformable bubble rising near a vertical wire-mesh in the quiescent water | |
| Hsiao et al. | On the dynamics of flow structure development in an excited plane jet | |
| JPWO2018131714A1 (en) | Fluid mixing apparatus and method for producing mixed fluid using such mixing apparatus | |
| Shaaban et al. | Experiments on the dynamics of aspirating cantilevered pipes concurrently subjected to reverse external axial flow | |
| KR102608001B1 (en) | fluid mixing device | |
| Chatterjee | Use of ultrasonics in shear layer cavitation control | |
| Silveston et al. | Periodic pressure forcing of catalytic reactions | |
| Sengia et al. | Size effect of oscillating columns on mixing: A CFD study | |
| RU2306975C2 (en) | Method of intensifying reaction and mass exchange in heterogeneous agent | |
| RU133434U1 (en) | VIBRATION MIXER |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201117 |