CN109603702B - Hypergravity-fractal impact bed reactor - Google Patents
Hypergravity-fractal impact bed reactor Download PDFInfo
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- CN109603702B CN109603702B CN201811465042.7A CN201811465042A CN109603702B CN 109603702 B CN109603702 B CN 109603702B CN 201811465042 A CN201811465042 A CN 201811465042A CN 109603702 B CN109603702 B CN 109603702B
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Abstract
The utility model provides a hypergravity-fractal impinged bed reactor, mainly includes the rotatory drum of cylinder shell and the equipment of a plurality of fractal ring pieces, and rotatory drum below is the tray, and the tray is connected with external centrifuge, its characterized in that: a feed inlet is arranged at the center of the rotating cylinder, a fluid outlet pipe is arranged on the cylindrical shell, fractal passages which are gradually communicated along the radial direction are arranged in the fractal ring pieces, the fractal stage number 15 of the fractal passages in the fractal ring pieces is more than or equal to n and more than or equal to 3, and the diameters of the fractal passages are 1 mu m-0.5 m; the diameter of the n-1-stage branched passage is 1.2-2 times of that of the n-stage branched passage, so that insufficient circulation force of an inner pipeline is avoided; adjusting the rotational speed of the cylinder can adjust the fluid flow in the passageway. The reactor adopts centrifugal force as power drive, realizes orderly multiple instant impact mixing and dispersion among fluids in a high-gravity field, and greatly improves disordered mixing among fluids in the filler of the high-gravity equipment.
Description
The technical field is as follows:
the invention belongs to the technical field of chemical equipment, relates to a reaction device suitable for mixing and reacting liquid-liquid, liquid-solid and other multiphase flows, can meet various unit operations such as a rapid reaction process controlled by micro mixing and mass and heat transfer between two (more) components, and particularly relates to a reaction device capable of realizing forced mixing of solid-phase materials or high-viscosity materials.
Background art:
multiphase flow mixing and reaction are common chemical processes in many fields of chemical industry, energy, environment, biochemistry and the like, and good uniform and rapid mixing performance is an important index for determining the performance of a reactor and directly influences the production strength, the conversion rate and the product quality. Traditional multiphase flow mixing usually adopts means such as mechanical stirring, fluid atomization, jet flow, bubbling, solid fluidization, impinging stream and the like to realize mixing or chemical reaction between phases. Because the relative motion between the phases is not violent enough, long time is needed for sufficient mixing, concentration difference (temperature difference, pressure difference and the like) is easily formed in a large-volume reactor, so that the flow field is unevenly distributed, and the overall mixing performance is poor. To improve mixing performance, the most effective method of mixing between multiphase fluids is forced mixing.
The impinging stream technique is a technique in which two or more jets are impinged with each other at an angle in a narrow range to achieve rapid mixing of the fluid, and a typical apparatus thereof is an impinging stream reactor. The common characteristic of all impinging stream reactors is that the flow field distribution in the impinging zone is uneven, i.e. the jet flow impinging forms a flow field with high fluid density in the impinging central zone, strong pressure fluctuation and best mixing effect; and the density of the peripheral fluid is sparse, so that vortex is easily formed, and back mixing is caused. In addition, the mixing area generated by impact is very small due to the limitation of the aperture of the jet flow, the orifice can be blocked when the solid content is very high, the impact can only realize single mixing, and the reinforced mixing effect is limited. The existing impinging stream equipment is mainly designed based on the principle of single impingement of two or more jet flows, and realizes the mixing and reaction of multiphase flows by generating driving force by a pump or compressed air.
A typical reactor of the hypergravity technology is a hypergravity reactor (also called a rotating packed bed) whose core is an internally filled porous packed rotor with irregular pore channels. Due to the high-speed rotation of the filler rotor, the fluid is subjected to centrifugal force which is tens of times or even thousands of times greater than the gravity acceleration of the earth, and is sheared into small liquid films, liquid threads and liquid drops, and the liquid films, the liquid threads and the liquid drops are rapidly and repeatedly dispersed and condensed in the filler pore channels. The rotor is composed of filler and a fixing piece and is a core component of the high-gravity reactor. Particularly, when a solid phase exists, the filler is easy to block, so that the flow field distribution in the filler is uneven, and the advantage of rapid and uniform mixing is lost; the mass distribution in the rotor is uneven, the center of gravity shifts, and the abrasion of the shaft part is aggravated. The packing used by the existing supergravity equipment also has the defects of uneven pore channel distribution, small gap, easy deformation of flexible packing, uneven packing filling and the like, and even if the regular packing made of rigid materials is adopted, the problem of structural mixing reduction of the packing inevitably occurs.
The current popular impinging stream technology and the hypergravity technology can better solve the mixing and reaction among multiphase flows than the traditional method. Patents CN02151624.3, 201410481283.6, 201410481265.8, 201410482787.X, 201410482788.4, 201410482789.9, 201620455703.8, 201610967672.9 combine and improve impinging stream and hypergravity techniques, and have more excellent micromixing performance than the conventional hypergravity and impinging stream devices. However, the core characteristics of both technologies are fluid micelle punctiform mixing, and the combination of the two technologies still cannot eliminate the defect of uneven distribution of the flow field inside the filler in the supergravity device, and the requirements of uniform mixing and reaction under ideal conditions cannot be met. In addition, patents CN201710375007.5, 201611266898.2, 201711035436.4, 201210502537.9, 201410722604.7, 201611048160.9, 201810088194.3, 201520393705.4 also report micro-reaction devices with fractal structure to achieve multiple impact mixing, thereby improving mixing effect. However, these reaction devices with fractal structures inevitably have narrow flow channels, difficult industrial scale-up, and difficulty in handling high-viscosity materials and solid-phase-containing materials; the pressure is used as a driving force, and equipment is easily damaged after the small-diameter flow passage is blocked.
The invention content is as follows:
the technical problem to be solved by the invention is to overcome the defects of the prior art and provide a device which takes a rotary centrifugal force as power, realizes continuous and repeated impact mixing of multiphase flow materials in a fractal pipeline, has uniform flow field distribution, is not easy to generate structural blockage of solid materials and high-viscosity materials, has a simple structure, is easy for industrial amplification, is convenient to disassemble and clean and is reliable in operation.
The invention provides a mixing device driven by centrifugal force to realize multistage limited impact.
The technical problem to be solved by the invention is realized by adopting the following technical scheme.
The utility model provides a hypergravity-fractal impinged bed reactor, mainly includes the rotatory drum of cylinder shell and the equipment of a plurality of fractal ring pieces, and rotatory drum below is the tray, and the tray is connected with external centrifuge, its characterized in that: a feed inlet is arranged at the center of the rotating cylinder, a fluid outlet pipe is arranged on the cylindrical shell, fractal passages which are gradually communicated along the radial direction are arranged in the fractal ring pieces, the fractal stage number 15 of the fractal passages in the fractal ring pieces is more than or equal to n and more than or equal to 3, and the diameters of the fractal passages are 1 mu m-0.5 m; the diameter of the n-1-stage branched passage is 1.2-2 times of that of the n-stage branched passage, so that insufficient circulation force of an inner pipeline is avoided; adjusting the rotational speed of the cylinder can adjust the fluid flow in the passageway.
In the further technology, the rotating cylinder is mainly formed by overlapping more than 3 layers of fractal ring sheets.
The fractal ring pieces are preferably 3 layers, wherein the fractal ring pieces on the outer layer and the middle layer are assembled by uniformly distributed bolts and nuts, and the fractal ring pieces on the inner layer are movable ring pieces. The fractal ring piece on the inner layer is small, the centrifugal force is large, the fractal ring piece is directly arranged to be movable, and the blockage materials can be conveniently cleaned.
Further technology: the lower surface of the fractal ring piece of the inner layer is provided with an arc-shaped groove, the upper surface of the tray is provided with a convex baffle, the baffle is clamped in the arc-shaped groove, when the baffle is positioned at one end of the arc-shaped groove, the fractal passage of the fractal ring piece of the inner layer is communicated with the fractal passage of the fractal ring piece of the middle layer, and when the baffle is positioned at the other end of the arc-shaped groove, the fractal passage of the fractal ring piece of the inner layer is staggered with the fractal passage of the fractal ring piece of the middle layer. On one hand, the arc-shaped groove is combined with the convex baffle to limit the position of the inner layer fractal ring sheet, when the centrifuge drives the tray to rotate, the baffle is positioned at one end of the arc-shaped groove, the fractal passages are communicated, when the centrifuge stops, the baffle is positioned at the other end of the arc-shaped groove, the fractal passages are staggered, and the passages are cut off immediately; on the other hand, when there is the jam condition at the inlayer, centrifuge is interrupted work, and the baffle constantly removes the striking in the arc wall, and inlayer fractal ring piece is interrupted by the striking, can effectively solve the jam problem.
Further technology: one end of the arc-shaped groove is provided with a deep groove, a spring is arranged in the deep groove, and the spring extends out of the notch of the deep groove. On the one hand, reduce striking dynamics and noise, extension practical life, on the other hand, after centrifuge stops, the inertia of inlayer fractal ring piece is less than the elasticity of spring, and the baffle is bounced off arc wall one end at once, cuts off the passageway fast, stops the fractal and mixes.
In the further technology, the assembling quantity of the bolts on the inner side and the outer side of the ring piece is not less than 6 groups;
in the further technology, a stepped fractal passage combined by one or more fractal structures such as a Y type, a T type, an H type and the like is arranged in the fractal ring sheet.
The invention has the advantages and effects that:
1. the reactor adopts centrifugal force as power drive, realizes ordered multiple instant impact mixing and dispersion between fluids in a high-gravity field, and greatly improves unordered mixing between fluids in the filler of the high-gravity equipment;
2. the multistage impact mixing is realized by means of the action of a supergravity field (centrifugal force), the number of power equipment and pipe fittings required by multistage impact flow equipment is greatly reduced, and the equipment is simple in structure;
3. the diameter of the passage is adjustable between 1 mu m and 0.5m, the reactor of the passage with small diameter can be used as a microreactor, while the reactor of the passage with large diameter can be used as an industrialized reaction device, compared with the existing filler passage, the reactor has larger flow space, is not easy to generate structural blockage, can meet the mixing and reaction of fluid with large flow, high viscosity and solid-phase components, is easy to realize industrialized amplification and has good universality;
4. the limited fractal impact ensures that the flow field is uniformly distributed without fluid back mixing, simultaneously eliminates the defects of material blockage in the filler of the supergravity equipment and local stress unbalance caused by the deformation of the flexible filler, and improves the stability of the equipment;
5. the reactor belongs to dynamic impinging stream equipment, the rotating speed of the rotating cylinder can be adjusted to control the retention time of materials in the reactor, the chemical reaction process with different reaction times can be met, and the application range is wide;
6. the reactor adopts the layered and superimposed modular design, can be replaced wholly or partially, and has the advantages of convenient processing, installation and cleaning, small occupied area and small equipment investment.
7. The movable clamping groove structure is adopted, the material can be regulated and controlled in time, and the parking and driving operation is facilitated.
Description of the drawings:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the overall assembly structure of the present invention;
fig. 3 is a schematic structural diagram of an inner layer fractal circular ring sheet and a tray of the invention.
The specific implementation mode is as follows:
in order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained below by combining the specific drawings.
As shown in figures 1-3
A supergravity-fractal impact bed reactor mainly comprises a cylindrical shell 1 and a rotating cylinder 2 assembled by 3 layers of fractal ring pieces, wherein a tray is arranged below the rotating cylinder and is connected with an external centrifuge 3, a feed inlet 4 is arranged at the center of the rotating cylinder, a fluid outlet pipe 5 is arranged on the cylindrical shell, fractal passages 6 which are communicated step by step along the radial direction are arranged in the fractal ring pieces, the fractal stages 15 of the fractal passages in the fractal ring pieces are more than or equal to n and more than or equal to 3, and the diameters of the fractal passages are 1 mu m-0.5 m; the diameter of the n-1-stage branched passage is 1.2-2 times of that of the n-stage branched passage, so that insufficient circulation force of an inner pipeline is avoided; adjusting the rotational speed of the cylinder can adjust the fluid flow in the passageway.
The fractal ring pieces on the outer layer and the middle layer are assembled by uniformly distributed bolts and nuts, and the fractal ring pieces on the inner layer are movable ring pieces. The fractal ring piece on the inner layer is small, the centrifugal force is large, the fractal ring piece is directly arranged to be movable, and the blockage materials can be conveniently cleaned.
An arc-shaped groove 7 is formed in the lower surface of the fractal ring piece of the inner layer, a convex baffle 8 is arranged on the upper surface of the tray, the baffle is clamped in the arc-shaped groove, when the baffle is located at one end of the arc-shaped groove, a fractal passage of the fractal ring piece of the inner layer is communicated with a fractal passage of the fractal ring piece of the middle layer, and when the baffle is located at the other end of the arc-shaped groove, the fractal passage of the fractal ring piece of the inner layer is staggered with the fractal passage of the fractal ring piece of the middle layer. On one hand, the arc-shaped groove is combined with the convex baffle to limit the position of the inner layer fractal ring sheet, when the centrifuge drives the tray to rotate, the baffle is positioned at one end of the arc-shaped groove, the fractal passages are communicated, when the centrifuge stops, the baffle is positioned at the other end of the arc-shaped groove, the fractal passages are staggered, and the passages are cut off immediately; on the other hand, when there is the jam condition at the inlayer, centrifuge is interrupted work, and the baffle constantly removes the striking in the arc wall, and inlayer fractal ring piece is interrupted by the striking, can effectively solve the jam problem.
One end of the arc-shaped groove is provided with a deep groove 9, a spring 10 is arranged in the deep groove, and the spring extends out of the notch of the deep groove. On the one hand, reduce striking dynamics and noise, extension practical life, on the other hand, after centrifuge stops, the inertia of inlayer fractal ring piece is less than the elasticity of spring, and the baffle is bounced off arc wall one end at once, cuts off the passageway fast, stops the fractal and mixes.
The assembling quantity of the bolts on the inner side and the outer side of the circular ring piece is not less than 6 groups;
the fractal ring sheet is internally provided with a stepped fractal passage combined by one or more fractal structures such as a Y type, a T type, an H type and the like.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (3)
1. The utility model provides a hypergravity-fractal impinged bed reactor, mainly includes the rotatory drum of cylinder shell and the equipment of a plurality of fractal ring pieces, and rotatory drum below is the tray, and the tray is connected with external centrifuge, its characterized in that: a feed inlet is formed in the center of the rotating cylinder, a fluid outlet pipe is formed in the cylindrical shell, fractal passages which are gradually communicated along the radial direction are formed in the fractal ring pieces, the fractal stage number 15 of the fractal passages in the fractal ring pieces is more than or equal to n and more than or equal to 3, and the diameters of the fractal passages are 1 mu m-0.5 m; the diameter of the n-1-stage branched passage is 1.2-2 times of that of the n-stage branched passage, so that insufficient circulation force of an inner pipeline is avoided; the rotating cylinder is mainly formed by mutually overlapping fractal ring pieces, the fractal ring pieces are preferably 3 layers, wherein the fractal ring pieces on the outer layer and the middle layer are assembled by uniformly distributed bolts and nuts, the fractal ring piece on the inner layer is a movable ring piece, the lower surface of the fractal ring piece on the inner layer is provided with an arc-shaped groove, the upper surface of the tray is provided with a convex baffle plate which is clamped in the arc-shaped groove, when the baffle plate is positioned at one end of the arc-shaped groove, the fractal passage of the fractal ring piece on the inner layer is communicated with the fractal passage of the fractal ring piece on the middle layer, when the baffle plate is positioned at the other end of the arc-shaped groove, the fractal passage of the fractal ring piece on the inner layer is staggered with the fractal passage of the fractal ring piece on the middle layer, one end of the arc-shaped groove is provided with a deep groove, and a spring is arranged in the deep groove, the spring extends out of the deep groove notch.
2. A supergravity-fractal impinged-bed reactor as claimed in claim 1, wherein: the bolt assembling quantity of the inner side and the outer side of the ring piece is not less than 6 groups.
3. A supergravity-fractal impinged-bed reactor as claimed in claim 1, wherein: the fractal ring sheet is internally provided with a stepped fractal passage combined by one or more fractal structures of a Y type, a T type and an H type.
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| CN104168990A (en) * | 2012-03-13 | 2014-11-26 | 艾塞路株式会社 | Mixed element, device using same, fluid mixing method, and fluid |
| CN106423315A (en) * | 2016-09-26 | 2017-02-22 | 东北大学 | Multi-material gradient mixed liquid drop formation device based on micro-fluidic chip |
| CN106824420A (en) * | 2015-12-03 | 2017-06-13 | 重庆华奥药业有限公司 | Classification adjustable type micronizer |
| CN206500162U (en) * | 2017-03-01 | 2017-09-19 | 侯中坤 | A kind of micro-fluidic chip dispersing mixer |
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2018
- 2018-12-03 CN CN201811465042.7A patent/CN109603702B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1425493A (en) * | 2002-12-26 | 2003-06-25 | 华北工学院 | Impact flow-rotary filler bed device and using method |
| WO2008028722A1 (en) * | 2006-09-04 | 2008-03-13 | Voith Patent Gmbh | Devolatilizing apparatus |
| CN101850231A (en) * | 2009-07-03 | 2010-10-06 | 中国科学院上海微系统与信息技术研究所 | Micro-fluid reactor, using method and application thereof |
| CN104168990A (en) * | 2012-03-13 | 2014-11-26 | 艾塞路株式会社 | Mixed element, device using same, fluid mixing method, and fluid |
| CN106824420A (en) * | 2015-12-03 | 2017-06-13 | 重庆华奥药业有限公司 | Classification adjustable type micronizer |
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| CN206500162U (en) * | 2017-03-01 | 2017-09-19 | 侯中坤 | A kind of micro-fluidic chip dispersing mixer |
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