CN106693810A - Micromixer for fluid materials - Google Patents
Micromixer for fluid materials Download PDFInfo
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- CN106693810A CN106693810A CN201710070069.5A CN201710070069A CN106693810A CN 106693810 A CN106693810 A CN 106693810A CN 201710070069 A CN201710070069 A CN 201710070069A CN 106693810 A CN106693810 A CN 106693810A
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- thin
- walled
- ceramic component
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/30—Micromixers
- B01F33/3034—Micromixers using induced convection or movement in the mixture to mix or move the fluids without mechanical means, e.g. thermodynamic instability, strong gradients, etc.
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Abstract
The invention discloses a micromixer for fluid materials. The micromixer comprises the main components of a multichannel thin-walled micropore ceramic element, a container housing, a sealing part and the like. Two fluid materials flow inside from internal channels and an external space of the multichannel thin-walled micropore ceramic element, wherein one material enters a space of the other material through a ceramic thin wall and is mixed with the other material. The multichannel thin-walled micropore ceramic element can be produced through a low-cost process, the size and shape ranges of the micropore ceramic element are wide, a micro-device or a large device can be conveniently fabricated, the requirements of different process scales are met, and the micromixer can be applied to multiple industries of chemical engineering, pharmacy, foods, environmental protection and the like.
Description
Technical field
It is more particularly to a kind of micro- mixed the present invention relates to fields such as Inorganic Non-metallic Materials, chemical industry, pharmacy, food and environmental protection
The manufacture of clutch part and its application in fluid hybrid technique.
Background technology
Micro- chemical process is also acknowledged as one of new key areas of Chemical waste-water development, miniature chemical industry device
Be increasingly becoming its important member, such as micro-mixer, microreactor, micro-chemical analysis instrument, micro heat exchanger, miniature extractor,
Micropump, micro valve etc..Some results of study of existing miniature chemical industry device show, are reacted under the conditions of minute yardstick and converted
Rate, selectivity are significantly improved, and ratio of heat transfer coefficient legacy equipment improves a lot, and interphase mass transfer efficiency also has compared with legacy equipment
It is greatly improved.
Fluid mixing is basic and important technical process, is widely used in chemical industry, pharmacy, food and environmental protection etc. numerous
Field.The uniform efficient mixing of fluid foods is significant to the control of product quality and production cost.Microring array is
Realize a kind of important way of the uniform efficient mixing of material.Micro-mixer typically realizes that two fluids is distinguished by microchannel
Flowed in two passages, then merged together, so as to play a part of fluid-mixing.Microchannel is generally 10 ~ 500
Mm, generally comprises several or even tens minitype channels in micro-hybrid.The microring array of fluid mainly has 2 kinds of forms：（1）
Micro- contact, i.e., immiscible two-phase system such as liquid-liquid or vapor-liquid two phases fluid are contacting with each other in same microchannel or respectively
Two microchannels in flow, form parallel fluid layer, micro- contact of two-phase is realized by boundary；（2）Microring array is micro-
Dispersion, that is, the two fluids dissolved each other or immiscible two fluids enter microring array or micro- dispersion area by microchannel, realize two
The microring array or differential of fluid streams dissipate.
Practice have shown that, the topmost several features of micromixing process：（1）Mixing efficiency is high, and the residence time is short, and energy consumption is low；
（2）Device structure is simple, without enlarge-effect；（3）Operating condition is easily controllable, chemical reaction, mass transfer and good heat-transfer；（4）
Equipment volume is small, and intrinsic safety performance is good.Just because of these features, during the last ten years, the research of microring array chemical process and
The exploitation of micro-hybrid is paid much attention to, and makes important progress.
Traditional micro-hybrid needs to use the modes such as laser engraving, electro-discharge machining and chemical etching, therefore equipment
Production cost is high, and is difficult to manufacture large-scale micro-hybrid, often can be only applied to the small-sized mixing such as pharmacy and fine chemistry industry
In reaction system.With the development of material technology and moulding process, the micro-hybrid based on microporous barrier is gradually obtained
Development.Microporous barrier has more than 25% porosity, and aperture size can give the stream on film both sides in nanometer to micrometer range
Body provides the microcosmic mixing of huge mixed interface and approaches uniformity.And large-sized microporous barrier can give birth on a large scale
Produce, thus micro-hybrid be no longer limited to it is small-sized and expensive.
Ceramics have the advantages that intensity high, excellent, resistance to bioerosion resistant to chemical etching, high temperature resistant and easy cleaning.To aoxidize
Microring array device based on the porous ceramic film materials such as thing, carbide has in numerous industries such as chemical industry, pharmacy, food and environmental protection
Wide application prospect.
The content of the invention
It is an object of the invention to a kind of porous ceramic element with thin-walled multi-channel structure is applied into micro-mixer
Part and equipment.The multichannel thin-walled microporous ceramic component, and micropore ceramics unit can be produced by the technique of low cost
The size and dimension of part is in extensive range, it is convenient to be fabricated to microdevice or large scale equipment, meets the need of different process scale
Will.The microring array device and equipment has that low production cost, operation energy consumption are low, mixing efficiency is high, it is resistant to chemical etching the features such as,
Can be widely applied to numerous industries such as chemical industry, pharmacy, food and environmental protection.
It is that, up to this purpose, the present invention uses following technical scheme：
A kind of microring array device for fluid stream mixing, by multichannel thin-walled microporous ceramic component, shell of tank, seal
Constituted etc. major part.The ceramic component has a thin-walled multi-channel structure, and the thin-walled of the ceramic component has and allows liquid
And/or the micropore that gas is penetrated through.
Preferably, the ceramic component by including and be not limited to the materials such as aluminum oxide, carborundum, quartz, cordierite, mullite
It is made for one or more in material.
The basic step for manufacturing the ceramic component includes：
1）Mix the ceramic material powder and adjuvant for combustion is made pug；
2）The pug extrusion molding is made base substrate；
3）By body drying sizing；
4）By the dry blank sintering into porous ceramics.
In extrusion molding, the ceramic component base substrate is set to form certain channel design and outer by the effect of mould
Shape.The cross sectional shape of the passage including and be not limited to the geometries such as circular, rectangle and regular hexagon.The ceramic thin-walled
Thickness is 0.2 ~ 2 mm.The profile of the ceramic component can be including and be not limited to flat board, cylinder and geometric form etc. square tube
Shape.
Multi-channel structure can make the ceramic component reduce weight of equipment using less ceramic material, while ensureing thin
Wall has enough mechanical strengths.For example, the multichannel ceramic component of oxidation aluminium material can undergo to surpass when wall thickness is 0.9 mm
Cross the gas or fluid pressure of 7 bar.Moreover, compared with heavy wall porous ceramic element, the resistance that thin-walled is enabled flow through
Reduce, flux higher is obtained at lower pressures, can realize microcosmic mixing in the way of microkinetic.
The thin-walled of the ceramic component is penetrating porous ceramics, and porosity is 25% ~ 85%, pore-size is 0.05 ~
20 μm, gas or liquid can penetrate into opposite side from the side of ceramic thin-walled under pressure.
To obtain suitable loose structure, it is thus necessary to determine that the appropriate raw material of the manufacture ceramic component.Ceramic material powder
Granularity there is most important influence on the microcellular structure of the ceramic component.The median particle size of ceramic material powder is generally
0.1 ~ 70 μm.Preferably, the median particle size of the ceramic material powder is 0.2 ~ 40 μm.
Microring array device disclosed by the invention, by the multichannel thin-walled microporous ceramic component, shell of tank, seal etc.
Major part is constituted, by shell of tank and seal the internal gutter and outer portion of multichannel thin-walled microporous ceramic component every
Into independent space.The microring array device is characterised by that two kinds of fluid foods are made pottery from the multichannel thin-walled microporous respectively
The inner passage of porcelain element and exterior space are flowed into, and one of which material enters the space of another material through ceramic thin-walled,
And mix therewith.
Because the porosity on the thin-walled of the ceramic component is high, pore-size is small, therefore the stream passed through from ceramic thin-walled
Body material is entered into another fluid foods with intensive, fine sizes forms, formed huge boundary, so that real
Existing efficient microcosmic mixing.
Especially, according to equipment and technique needs, can be coated in the side in the outer wall of the ceramic component both sides organic
Coating or inorganic coating, are closed the micropore on the ceramic thin-walled, it is to avoid material is infiltrated.
The microring array device can be used for liquid-liquid, liquid-gas and gas-air mixer, can be used for the physical mixed of fluid foods,
Can also be used for the hybrid reaction of material.
The beneficial effects of the present invention are：Propose and made with a kind of porous ceramic element with thin-walled multi-channel structure
Microring array device, this microring array device manufacturing method is simple, saves raw material, reduces equipment unit weight, and operation energy consumption is low, mixes
Efficiency high is closed, miniature and larger fluid material hybrid technique is can be applied to.
Brief description of the drawings
Fig. 1 is respectively the thin-walled multichannel ceramic component schematic diagram of a kind of plate shaped, cylindrical shape and square tube shape；
A kind of microring array device schematic diagrames based on plate shaped multichannel ceramic component of Fig. 2；
A kind of microring array device schematic diagrames based on cylindrical shape multichannel ceramic component of Fig. 3；
Wherein each several part is respectively：Shell of tank 1, plate shaped multichannel ceramic component 2, cylindrical shape multichannel ceramic component 21,
Seal head 3, plastics sealing joint 31, the entrance 4 of material one, the entrance 5 of material two, plastics sealing joint 51, mixed material outlet 6.
Specific embodiment
Further illustrate technical scheme below in conjunction with the accompanying drawings and by specific embodiment.
A kind of microring array device for fluid stream mixing, by multichannel thin-walled microporous ceramic component, shell of tank, close
The major parts such as sealing are constituted.The ceramic component has a thin-walled multi-channel structure, and the thin-walled of the ceramic component has and allows
The micropore that liquid and/or gas are penetrated through.
Fig. 1 is three kinds of schematic diagrames of the multichannel thin-walled microporous ceramic component, the ceramic component have respectively flat board,
The profile of cylinder and square tube form.There is one group of small size passage of arranged in parallel, independent insertion in the ceramic component.It is described logical
The cross sectional shape in road be including and be not limited to the geometries such as circular and rectangle.The size in section is between 0.5 ~ 10 mm.Profit
The shape and structure of the ceramic component can be easily obtained with extruding-out process.And in theory, it is described
The length and sectional dimension of ceramic component are limited solely by the scale of production equipment.Therefore, can be produced using simple technique
The miniature and large-scale ceramic component, correspondingly, can manufacture miniature microring array device and large-scale micro-hybrid.
Device and equipment with microring array function are obtained, it is necessary to seal by the ceramic component and shell of tank
Fit together, the internal gutter of multichannel thin-walled microporous ceramic component and outside are separated into independent space, so that two
Planting fluid foods can flow into from the inner passage of the ceramic component and exterior space respectively.One of which material is through ceramics
Thin-walled enters the space of another material, and mixes therewith.
The microring array device can be used for the technical process such as liquid-liquid, liquid-gas and gas-air mixer.
Specific embodiment 1
A kind of microring array device based on plate shaped multichannel ceramic component, its structure is as shown in Figure 2.
Wherein, flat board multichannel ceramic component is porous oxidation aluminum.The manufacturing step of the ceramic component is as follows：
1st, the alumina powder that 4 kg medians are 20 μm is well mixed with 0.2 kg adjuvant for combustion；
2nd, 300 g methylcellulose, 150 g glycerine, 15 g oleic acid, 150 g vacuum mineral oil and 900 g water are added, through overmulling
The step such as conjunction, pugging, old, obtains plastic mud material；
3rd, pug is extruded into plate shaped multichannel base substrate with extruder；
4th, base substrate is dried by microwave；
5th, dry base substrate is warming up to 400 °C of 1 h of insulation with the speed of 2 °C/min, then is warming up to the speed of 2 °C/min
1400 °C of 2 h of insulation, then furnace cooling.
After the ceramic product cutting burnt till, plate shaped multichannel ceramic component 2 as shown in Figure 1 is obtained, its length is 400
Mm, width is 120 mm, and walled thickness is 0.9 mm, and through-hole aperture is 0.3 μm, and gas flux is 1200 m3/m2h×bar。
The shell 1 of rectangular shape is made of 304 stainless steels.There is opening at the two ends of stainless steel casing 1, can be by ceramic component 2
Inlay wherein；Sealed with silicone rubber pad between ceramic component 2 and stainless steel casing 1；One end seal head of ceramic component 2
3 encapsulation, prevent the outflow of fluid foods；The other end of ceramic component 2 is the entrance 5 of material two；Shell respectively sets a thing about 1
Material mouth, wherein following material mouthful is the entrance 4 of material one, material mouthful above is the outlet 6 of mixed material.
The microring array device of this example with electrical equipment in actual applications, it is necessary to combine.Electrical equipment include measuring pump,
PLC control system etc..Material one and material two are respectively by measuring pump by certain flow pump hybrid device in a subtle way.It is wherein right
Material two applies slightly higher pressure, material two is penetrated into the thing outside passage by stephanoporate thin wall from the passage of ceramic component 2
In material one, and mix rapidly with material one.
Big 0.1 bar of pressure of the mobile phase of pressure ratio material one of the mobile phase of material two, you can make material two penetrate into thing
In material one, microkinetic mixing is realized.
Specific embodiment 2
A kind of microring array device based on plate shaped multichannel ceramic component, its basic structure is simply micro- similar to instantiation 1
Hybrid device includes 10 ceramic components 2 arranged in parallel.By the quantity for increasing ceramic component 2, it is convenient to increase micro-
The material disposal ability of mixing apparatus.
Specific embodiment 3
A kind of microring array device based on cylindrical shape multichannel ceramic component, its basic structure is as shown in Figure 3.
Wherein, cylindrical shape multichannel ceramic component is porous silicon carbide silicon materials.The manufacturing step of the ceramic component is as follows：
1st, by the kg of black silicon carbide silica flour 4.5 that median the is 12 μm and kg of kaolin 0.3 that median is 0.5 μm,
Median is that 0.5 μm of the kg of alumina powder 0.2 is well mixed；
2nd, 300 g hydroxypropyl methyl celluloses, 120 g glycerine, 15 g oleic acid, 120 g vacuum mineral oil and 850 g water are added,
By the step such as mixing, pugging, old, plastic mud material is obtained；
3rd, pug is extruded into circular multichannel base substrate with extruder；
4th, base substrate is put into dry 8 h in 80 °C of baking ovens after the h of air drying 24；
5th, dry base substrate is warming up to 400 °C of 1 h of insulation with the speed of 2 °C/min, then is warming up to the speed of 2 °C/min
1350 °C of 2 h of insulation, then furnace cooling.
The ceramic product for burning till obtains cylindrical shape multichannel ceramic component as shown in Figure 1 by cutting, and its length is
200 mm, a diameter of 40 mm, walled thickness are 1 mm.The aperture of seperation film is 0.7 μm, and gas flux is 2700 m3/m2h×
bar。
Epoxy coating is coated in the outer wall of the cylinder-shaped ceramic element 21, the micropore of outer wall is closed to prevent fluid
Ooze out.Afterwards, the ceramic component 21 is encapsulated with plastics sealing joint 31 and plastics sealing joint 51, making the centre of cylinder turns into material
One circulation passage, and the long and narrow parallel channels that material two enters in ceramic component 21 from entrance 5, and through in ceramic component 21
Wall enters in the circulation passage of material one.
Know-why of the invention is described above in association with specific embodiment.These descriptions are intended merely to explain of the invention
Principle, and can not by any way be construed to limiting the scope of the invention.Based on explanation herein, the technology of this area
Personnel associate other specific embodiments of the invention by would not require any inventive effort, these modes fall within
Within protection scope of the present invention.
Claims (8)
1. the microring array device of a kind of fluid foods, it is characterised in that the microring array device is by multichannel thin-walled microporous ceramics
The major parts such as element, shell of tank, seal are constituted, by shell of tank and seal multichannel thin-walled microporous ceramics unit
The internal gutter of part and outside are separated into independent space.
2. multichannel thin-walled microporous ceramic component described in claim 1, it is characterised in that the multichannel of the ceramic component is logical
Cross the gallery being parallel to each other that the mode of extrusion molding is formed；The section of passage be include and be not limited to circular, rectangle and
The geometries such as regular hexagon.
3. multichannel thin-walled microporous ceramic component described in claim 1, it is characterised in that the material of the ceramic component is to include
And it is not limited to the ceramics such as aluminum oxide, carborundum, quartz, cordierite, mullite.
4. multichannel thin-walled microporous ceramic component described in claim 1, it is characterised in that the ceramic thin wall thickness of the ceramic component
It is 0.2 ~ 2 mm to spend.
5. the ceramic thin-walled of ceramic component described in claim 4, it is characterised in that the ceramic thin-walled is penetrating porous pottery
Porcelain, porosity is 25% ~ 85%, and pore-size is 0.05 ~ 20 μm.
6. microring array device described in claim 1, it is characterised in that two kinds of fluid foods are respectively from the multichannel thin-walled microporous
The inner passage of ceramic component and exterior space are flowed into, and one of which material enters the sky of another material through ceramic thin-walled
Between, and mix therewith.
7. multichannel thin-walled microporous ceramic component described in claim 1, it is characterised in that according to equipment and technique needs, can be with
Side coating organic coating or inorganic coating in the outer wall of the ceramic component both sides, make the micropore quilt on the ceramic thin-walled
Closing, it is to avoid material is infiltrated.
8. the method for multichannel thin-walled microporous ceramic component described in manufacturing claims 1, it is characterised in that its step includes： 1）
Mix the ceramic material powder and adjuvant for combustion is made pug； 2）The pug extrusion molding is made base substrate； 3）By institute
State body drying sizing； 4）By the dry blank sintering into porous ceramics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710070069.5A CN106693810A (en) | 2017-02-09 | 2017-02-09 | Micromixer for fluid materials |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710070069.5A CN106693810A (en) | 2017-02-09 | 2017-02-09 | Micromixer for fluid materials |
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| CN201710070069.5A Pending CN106693810A (en) | 2017-02-09 | 2017-02-09 | Micromixer for fluid materials |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202376975U (en) * | 2011-12-29 | 2012-08-15 | 江苏久吾高科技股份有限公司 | Ceramic membrane micropore air distributor |
| CN106268334A (en) * | 2015-05-21 | 2017-01-04 | 佛山市中国科学院上海硅酸盐研究所陶瓷研发中心 | A kind of ceramic separation film element and preparation method thereof |
-
2017
- 2017-02-09 CN CN201710070069.5A patent/CN106693810A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202376975U (en) * | 2011-12-29 | 2012-08-15 | 江苏久吾高科技股份有限公司 | Ceramic membrane micropore air distributor |
| CN106268334A (en) * | 2015-05-21 | 2017-01-04 | 佛山市中国科学院上海硅酸盐研究所陶瓷研发中心 | A kind of ceramic separation film element and preparation method thereof |
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Effective date of registration: 20220104 Address after: 528000 floor 10-12, Jinghua Building, No. 18, Jihua fifth road, Chancheng District, Foshan City, Guangdong Province Applicant after: Foshan Science and Technology Bureau Address before: 528000 C305, high tech park, No. 70 Guxin Road, Chancheng District, Foshan City, Guangdong Province Applicant before: SHANGHAI SILICATE Research Institute CERAMIC RESEARCH DEVELOPMENT CENTER FOSHAN CHINESE ACADEMY OF SCIENCES |
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Effective date of registration: 20221014 Address after: 528200 3rd Floor, Building D, Nanhai Science Museum, No. 3, Tianyou 3rd Road, Guicheng Street, Nanhai District, Foshan, Guangdong Applicant after: Foshan Zhongke Industrial Technology Research Institute Address before: 528000 floor 10-12, Jinghua Building, No. 18, Jihua fifth road, Chancheng District, Foshan City, Guangdong Province Applicant before: Foshan Science and Technology Bureau |
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