CN1386561A - Microwave extracter - Google Patents
Microwave extracter Download PDFInfo
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- CN1386561A CN1386561A CN 02111457 CN02111457A CN1386561A CN 1386561 A CN1386561 A CN 1386561A CN 02111457 CN02111457 CN 02111457 CN 02111457 A CN02111457 A CN 02111457A CN 1386561 A CN1386561 A CN 1386561A
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- isolator
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- extracter
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Abstract
A microwave extractor for the flowing micron-class or mm-class particles or fixed great particles is composed of a cylindrical container made of the material impermeable to microwave and an isolator (or transition tube) made of the material permeable to microwave. An annular working gap is formed between said cylindrical container and isolator, and has a height which is the integer times of the half-wavelength of microwave field in consonant mode. Its advantages are high uniformly to absorbing microwave energy, simple structure, and low cost.
Description
Technical field
The present invention relates to a kind of extraction equipment, particularly a kind of extraction equipment that utilizes microwave energy that material is heated and extracts continuously.
Background technology
Microwave extraction method is with microwave and the traditional solvent extraction a kind of new extracting process that the back forms that combines.Document " Microwave extraction-a novel sample preparation method forchromatography.Journal of Chromatography, 1986,371:299-254.) " at first reported applied microwave extraction in the analytical chemistry sample making technology.In recent years, the application of this new extractive process is more and more wider, many patent disclosures microwave abstracting method separately and the equipment that adopted, as:
Chinese patent application number: 00120353 discloses the method for a kind of Microwave Extraction grape pip Central Plains anthocyan material; Chinese patent application number: 00120352 discloses the method for a kind of Microwave Extraction GINKGO BILOBA EXTRACT and bilobalide-like substances; Chinese patent application number: 00120349 discloses the method for polysaccharide, polyphenols in a kind of Microwave Extraction tealeaves; Chinese patent application number: 91110686.3 disclose a kind of microwave auxiliary extracting process and equipment thereof.In the patent of being addressed, the inventor utilizes microwave energy to extract borse balm, garlic and salmon, and provided the flow process of a microwave assisted extraction, comprise at least one microwave-medium heating source, a blending tank that is used for mixed biologic material and extractant, system's extract and separate device and EGR.The emphasis of this patent is not microwave extracter and microwave source, but whole process flow.Therefore, for continuous production, portability is not strong.Chinese patent application number: 99114774 have reported a kind of industrial microwave oven specially for fluid treatment, and fluid drives solid material and flows in helix tube, and resistance is big, and material easily blocks; And can't eliminate microwave field and heat uneven shortcoming.Chinese patent application number: 97197512.4 disclose and a kind of a large amount of materials have been carried out the device of microwave chemical reaction, have introduced a kind of microwave reaction device of still shape.This device can only be used for intermittently operated, and complex structure.
Summary of the invention
But the technical issues that need to address of the present invention are the microwave extracters that disclose a profit continued operation, easily block, can not produce continuously to overcome the material that prior art exists, the microwave field heating is inhomogeneous, baroque defective, this microwave extracter can be used for the extraction of plant material or other solid, liquid two-phase mixture, is suitable for chemical industry and pharmaceuticals industry production.
Technical scheme of the present invention:
The said microwave extracter of the present invention comprises:
Adopt the impenetrable material of microwave to make, be provided with the cylindrical vessel of material import and export;
The isolator in the cylindrical vessel is made, is arranged on to the material of employing microwave penetrating, forms the work annular space between cylindrical vessel and the isolator;
By the transition conduit that flange and cylindrical vessel are connected with isolator, this transition conduit is connected with isolator, is provided with the O type circle that prevents that microwave from revealing between flange and the cylindrical vessel, is provided with sealing gasket between isolator and the cylindrical vessel.
According to the present invention, the bottom of cylindrical vessel is provided with end flange, and it is fastening to adopt the fast-open type securing member to carry out, so that to the processing of large granular materials.
Because effective working depth of work annular space should be equivalent to the integral multiple of the half-wavelength of microwave field resonance mode in the operating room, therefore in the preferred scheme of the present invention, the actual height of work annular space is the integral multiple of the half-wavelength of the microwave field resonance mode that adopted.Microwave frequency in industrial use is generally 2450MHz, and wavelength is 12.2cm, its half-wavelength 6.1cm, and the actual height of work annular space is n * 6.1cm, n is the integer greater than 1, is advisable with 2～10.
The mean breadth of work annular space and width range should be according to the character designs of polarity of solvent and material.After microwave extracter assembled, the penetration depth of microwave in selected solvent and material should be mated with the size of annular space.If the annular space mean breadth is much larger than microwave penetration depth therein, it is very abundant that microwave energy absorbs meeting so, but material does not obtain enough microwave energies, needs to prolong extraction time.If the annular space mean breadth is much smaller than microwave penetration depth therein, the microwave energy absorption is insufficient so, and absorption efficiency is not high, though material can obtain abundant irradiation.The mean breadth of general work annular space be cylindrical vessel diameter 1/3～1/6, preferred value can be taken as 1/4.
The present invention is operation like this:
Microwave process waveguide transmission by microwave generator produces enters isolator by the transition conduit top, the microwave penetration isolator, enter the work annular space, material enters the work annular space from feed inlet, flows in the work annular space, accept the microwave radiation, extract, flow out from the material discharging opening then;
When needs were handled large granular materials, the fast-open type securing member on the removable flange of going to the bottom that is arranged on cylindrical vessel bottom placed the work annular space with required material to be processed, and then carries out microwave abstracting.
By above-mentioned disclosed technical scheme as seen, microwave extracter of the present invention has very significant advantage, and material can fully absorb microwave energy when flowing in annular space, and microwave energy is fully used; Turbulence intensity strengthens greatly, can remedy the inhomogeneous deficiency that causes the heat spot and the undercooling point in space of microwave field density, has both helped mass transfer, heat transfer, can remedy the inhomogeneous of heating using microwave again; The material that is extracted can be the micron order that flows or millimeter grade particles, also can be the large granular materials fixed (for example, the medicine materical crude slice of Chinese medicine etc.); Simple in structure, cost is low, and is easy to manufacture, handling safety.The present invention can be widely used in the processing of solid, liquid two-phases such as chemical industry, pharmaceutical industry or liquid-liquid diphasic flow body, comprises extraction, extraction and reaction etc., and the present invention both can be used for Batch Process (circulation), also can be used for continuous production.
Description of drawings
Fig. 1 is the structural representation with microwave extracter of V-arrangement isolator.
Fig. 2 is that A----A among Fig. 1 is to schematic diagram.
Fig. 3 is that B----B among Fig. 1 is to schematic diagram.
Fig. 4 is the structural representation with II shape isolator microwave extracter.
Fig. 5 is the fluid flow state figure of microwave extracter shown in Figure 1.
Fig. 6 is the fluid flow state figure of microwave extracter shown in Figure 4.
The specific embodiment
As seen from Figure 1, the said microwave extracter of the present invention comprises:
Adopt the impenetrable material of microwave to make, be provided with material inlet 14 and export 6 cylindrical vessel 4;
The V-arrangement isolator 12 in the cylindrical vessel 4 is made, is arranged on to the material of employing microwave penetrating, forms work annular space 13 between cylindrical vessel 4 and the isolator 12;
The transition conduit 10 that is connected with isolator 12 by last top flange 8 and following top flange 7 and cylindrical vessel 4, this transition conduit 10 is connected with isolator 12, be provided with the O type circle 9 that prevents that microwave from revealing between last top flange 8 and the following top flange 7, be provided with sealing gasket 11 between isolator 12 and the cylindrical vessel 4.
The material of said microwave penetrating comprises polytetrafluoroethylene (PTFE) or quartz glass etc., and the impenetrable material of said microwave comprises as stainless steel, copper or steel etc.
The bottom of cylindrical vessel 4 is provided with the upper base flange 15 and the flange 1 of going to the bottom, the upper base flange 15 and the flange 1 of going to the bottom are provided with the earrings 102 that cooperatively interacts, have groove 101, and it is fastening to adopt fast-open type securing member 3 to carry out, upper base flange 15 and go to the bottom and be provided with down O type circle 2 between the flange 1.
By Fig. 1 and Fig. 3 as seen, said fast-open type securing member 3 comprises: 302, one the interior rib-loop nuts 303 that match with bolt 302 of bolt that are rotatably mounted to flange 1 bottom of going to the bottom by fixture 301.Bolt 302 is embedded in the groove 101, screw nut 303, get final product the fastening upper base flange 15 and the flange 1 of going to the bottom, otherwise, then the flange 1 of going to the bottom can be taken apart.
For removing the heat that extraction process produces, has the chuck 5 of cooling medium inlet 502 and outlet 501 in cylindrical vessel 4 outer setting.
Fig. 4 is the structural representation with II shape isolator microwave extracter.As seen from Figure 4, said isolator 12 is an II shape, and the easier processing of the microwave extracter of this structure also can obtain liquid form preferably.
Extractor bottom or material outlet 6 are provided with temperature element, as semiconductor heat resistance or infrared sensor, so that operation control.
With LDV the cold mould Flow Field Distribution of Fig. 1 and microwave extracter shown in Figure 4 is investigated, it the results are shown in Figure 5 and Fig. 6, and can find has the many places whirlpool in the flow field, turbulence intensity is strengthened greatly, both help mass transfer, heat transfer, can remedy the inhomogeneous of heating using microwave again.Among Fig. 5 and Fig. 6, Z is the coordinate figure on the microwave extracter short transverse, and microwave extracter bottom Z value is 0.The starting point of all vectors is all on the tangent plane of vertical Z beam warp scaleover 100mm in the Z=100 presentation graphs; Z=8 represents that the starting point of these all vectors of figure is all on the tangent plane of vertical Z beam warp scaleover 8mm.Among Fig. 5 and Fig. 6, " whirlpool " is meant the whirlpool that fluid flows and forms in extractor, and among Fig. 5, " reflection " is meant that the bodies of fluid direction is to flow clockwise, flows because the resistance of extraction wall and bottom is counterclockwise segment fluid flow.
Claims (12)
1. a microwave extracter is characterized in that, this microwave extracter comprises:
Adopt the impenetrable material of microwave to make, be provided with the cylindrical vessel (4) of material inlet (14) and outlet (6);
The isolator (12) in the cylindrical vessel (4) is made, is arranged on to the material of employing microwave penetrating, forms work annular space (13) between cylindrical vessel (4) and the isolator (12);
The transition conduit (10) that is connected with isolator (12) by last top flange (8) and following top flange (7) and cylindrical vessel (4), this transition conduit (10) is connected with isolator (12), be provided with the O type circle (9) that prevents that microwave from revealing between last top flange (8) and the following top flange (7), be provided with sealing gasket (11) between isolator (12) and the cylindrical vessel (4).
2. microwave extracter as claimed in claim 1 is characterized in that, said isolator (12) is the V-arrangement isolator.
3. microwave extracter as claimed in claim 1 is characterized in that, said isolator (12) is an II shape isolator.
4. microwave extracter as claimed in claim 1 is characterized in that, work annular space (13) highly is n * 6.1cm, and n is the integer greater than 1.
5. microwave extracter as claimed in claim 4 is characterized in that, n is 2～10.
6. microwave extracter as claimed in claim 1 is characterized in that, work annular space (13) mean breadth be cylindrical vessel (4) diameter 1/3～1/6.
7. microwave extracter as claimed in claim 6 is characterized in that, work annular space (13) mean breadth be cylindrical vessel (4) diameter 1/4.
8. microwave extracter as claimed in claim 1, it is characterized in that, the bottom of cylindrical vessel (4) is provided with upper base flange (15) and the flange of going to the bottom (1), upper base flange (15) and the flange of going to the bottom (1) are provided with the earrings (102) that cooperatively interacts, have groove (101), and it is fastening to adopt fast-open type securing member (3) to carry out, and is provided with down O type circle (2) between upper base flange (15) and the flange of going to the bottom (1).
9. microwave extracter as claimed in claim 8, it is characterized in that, said fast-open type securing member (3) comprising: one is rotatably mounted to the bolt (302) of the flange of going to the bottom (1) bottom, an interior rib-loop nut (303) that matches with bolt (302) by fixture (301).
10. as the arbitrary described microwave extracter of claim 1～9, it is characterized in that the material of said microwave penetrating comprises polytetrafluoroethylene (PTFE) or quartz glass, the impenetrable material of said microwave comprises stainless steel, copper or steel.
11., it is characterized in that cylindrical vessel (4) outer setting has the chuck (5) of cooling medium inlet (502) and outlet (501) as the arbitrary described microwave extracter of claim 1～9.
12. microwave extracter as claimed in claim 10 is characterized in that, cylindrical vessel (4) outer setting has the chuck (5) of cooling medium inlet (502) and outlet (501).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021114579A CN1142003C (en) | 2002-04-23 | 2002-04-23 | Microwave extracter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021114579A CN1142003C (en) | 2002-04-23 | 2002-04-23 | Microwave extracter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1386561A true CN1386561A (en) | 2002-12-25 |
| CN1142003C CN1142003C (en) | 2004-03-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021114579A Expired - Fee Related CN1142003C (en) | 2002-04-23 | 2002-04-23 | Microwave extracter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1142003C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106267882A (en) * | 2016-08-30 | 2017-01-04 | 李斌 | A kind of microwave coupling leach extraction method and device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100462122C (en) * | 2006-11-02 | 2009-02-18 | 天水华圆制药设备科技有限责任公司 | Ring shape microwave reflux extracting device |
-
2002
- 2002-04-23 CN CNB021114579A patent/CN1142003C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106267882A (en) * | 2016-08-30 | 2017-01-04 | 李斌 | A kind of microwave coupling leach extraction method and device |
| CN106267882B (en) * | 2016-08-30 | 2018-09-18 | 李斌 | A kind of microwave coupling leaching device |
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| Publication number | Publication date |
|---|---|
| CN1142003C (en) | 2004-03-17 |
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