CN1093773C - Travelling-wave type microwave chemical reactor with slot wave guide - Google Patents
Travelling-wave type microwave chemical reactor with slot wave guide Download PDFInfo
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- CN1093773C CN1093773C CN99114426A CN99114426A CN1093773C CN 1093773 C CN1093773 C CN 1093773C CN 99114426 A CN99114426 A CN 99114426A CN 99114426 A CN99114426 A CN 99114426A CN 1093773 C CN1093773 C CN 1093773C
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Abstract
The present invention relates to a traveling-wave type microwave chemical reactor with slot wave guide, which is a device used for accelerating chemical reaction. The device comprises a microwave chemical reactor with slot wave guide and two mode converters, wherein the microwave inlet end and the microwave outlet end of the microwave chemical reactor with slot wave guide are respectively connected with one mode converter. The traveling-wave type microwave chemical reactor has the advantages of simple structure and simple processing and can be widely used for scale production in chemical industry.
Description
The present invention is a kind of device that is used to accelerate chemical reaction velocity, especially accelerates the device of chemical reaction velocity with the method for microwave.
Microwave applications has in chemical field accelerates chemical reaction velocity greatly, induces characteristics such as some chemical reaction.Microwave has been obtained a large amount of laboratory research achievements in every field such as organic, first machine, analysis and catalysis.Chemists wish these many achievements in research are moved towards factory by the laboratory, are applied in the industrial production and go.Crucial difficult point is not have large-sized microwave chemical reaction apparatus.Present industrial used microwave heating equipment, make with rectangular waveguide, when it was operated in main mould, size was less, and the WZ20S-1 type " microwave food sterilization processing machine " that for example homemade three happy electric parent companys (state-run 772 factories) produce is when being operated in the 2450MHz frequency, the size of its material import and export is wide 21.5 centimetres, height is 5 centimetres, and such size is difficult to use in the continuous production of chemical industry, because chemical industry production has often required large volume, big capacity.Industrial used microwave heating equipment is operated in the multimode state if allow at present, and size is to become big, but the field intensity in the rectangular waveguide is inhomogeneous, causes the heat spot in space and quality and the quantity that undercooling point influences product.In the prior art, there is a kind of slot wave to lead, circular recess wave guide for example, the size of its material import and export when it is operated in the 2450MHz frequency, can be wide 100 centimetres, height be 20 centimetres, and it is bigger 18.6 times than the product of above-mentioned three happy companies to import and export area, so far, nobody proposes to utilize slot wave to lead and makes the travelling-wave-type microwave chemical reaction apparatus.
The purpose of this invention is to provide a kind of main mould, large scale, large volume of being operated in, be suitable for the travelling-wave type microwave chemical reactor with slot wave guide of the suitability for industrialized production of chemical industry.
Travelling-wave type microwave chemical reactor with slot wave guide of the present invention mainly is made up of a slot wave waveguide microwave chemical reaction device and 2 mode converters, and wherein the microwave inlet side of slot wave waveguide microwave chemical reaction device is connected to a mode converter respectively with going out to hold.
Slot wave waveguide microwave chemical reaction device adopts slot wave to lead composition, and this slot wave is led by two parallel metals that separate with insulated column are dull and stereotyped and formed, and the symmetrical centre position of leading end face at slot wave is provided with through hole along the direction of electromagnetic wave propagation.Two parts up and down of slot wave waveguide microwave chemical reaction device are symmetry fully.
If is that example illustrates it with rectangular waveguide to circular recess wave guide, mode converter is made up of rectangle/circular converter and circle/circular recess wave guide converter two parts, one end of rectangle/circular converter is a rectangular opening, another the inner is a circular hole, small sircle hole one end of circular hole one end and circle/circular recess wave guide converter joins, big hole one end of circle/circular recess wave guide converter and the manhole end of slot wave waveguide microwave chemical reaction device join, be connected between the big hole of circle/circular recess wave guide converter and the small sircle hole, the space of its connection is circular cone shape.Two parts up and down of mode converter are symmetry fully.
The geometry and the size of mode converter and microwave chemical reactor joint are just the same.With regard to the overall shape of mode converter, it is made up of one section variable cross-section waveguide.Its end is consistent with the microwave source waveguide; The other end is led consistent with slot wave.
The invention has the advantages that
1. at identical operating frequency (as 2450 megahertzes), main die worker does under the condition, and the cross-sectional area of circular recess wave guide is than the big order of magnitude of rectangular waveguide; The area of material import and export is bigger 18.6 times than the three happy WZ20S-1 of company types.
2. the present invention can be used for chemical industry production, for the brand-new achievement of " microwave chemical " this border subject, moves towards factory from the laboratory, and the realization industrialized production is made contributions, and produces high economic benefit and social benefit.
3. simple in structure, cost is low, and is easy to manufacture.
Fig. 1 is a general structure schematic diagram of the present invention.Comprising slot wave waveguide microwave chemical reaction device 1, metal plate 11, insulated column 13, mode converter 2, circle/circular recess wave guide converter 21, rectangle/circular converter 22, rectangular opening 221, small sircle hole 222, wedge shape insulant 23, conveyer belt 3.
Fig. 2 is the structural representation of slot wave waveguide microwave chemical reaction device Lower Half among the present invention.Comprising metal plate 11, through hole 12.
Fig. 3 is the present invention leads Lower Half to round slot wave with rectangular waveguide a structural representation.Circle/circular recess wave guide converter 21, rectangle/circular converter 22, rectangular opening 221 are wherein arranged.
Embodiment of the present invention are as follows:
Travelling-wave type microwave chemical reactor with slot wave guide is made of a slot wave waveguide microwave chemical reaction device and two identical mode converters.Their implementation methods separately of explanation illustrate the method that they are fitted together then earlier.
(1) slot wave waveguide microwave chemical reaction device is that example illustrates it with the circular recess wave guide microwave chemical reactor now.It can have several embodiments, and one of them way is to do a core with hard metal.It is of a size of diameter D＞0.31 λ of column part, and λ is an operation wavelength, and cylinder length depends on the needs.Diameter by this cylinder has a symmetrical plane, and forming with the cylinder is the two identical wing flat boards of axis, and plate is grown identical with cylinder, wide＞λ, and is thick 〉=0.31 λ.
Corrosion resistant stainless steel sheet| (plate) with suitable thickness is pressed into circular arc conductor in two bands with core on forcing press.Separate with insulating materials, make bolt and insulated column 13 as highly purified pottery etc., its thickness equals the thickness of two wing flat boards, after above part cleaning, forms slot wave waveguide microwave chemical reaction device with bolting.
The metal parallel flat district of the conveyer belt 3 through slot waveguides of making by insulating materials, and be connected with the gearing of two ends.
(2) mode converter is existing is that example illustrates it with the mode converter from rectangular waveguide master mould to circular recess wave guide master mould, this mode converter also can have several embodiments, one of them way is: do a core with hard metal, its size is: the size of first half when changing to circular waveguide master die worker and do with the corresponding standard rectangular waveguide dimensions of operation wavelength, its length is decided on actual needs, general length
Each shape of cross section between this biend is pressed the mode converter theory and is calculated and get, and is processed into the first half of core thus, and its symmetrical plane is perpendicular to the plane of rectangle broadside mid point.The latter half of core is to change to the circular recess wave guide size by above-mentioned circular waveguide size, length is decided on actual needs, general length＞λ, each shape of cross section between this biend, press the theoretical and theoretical calculating of circular recess wave guide of mode converter and get, be processed into the latter part of core thus, this part also has a symmetrical plane, is exactly the axial symmetry plane in circular recess wave guide open zone.It should be noted that the symmetrical discoid slot wave of forward and backward two parts leads the axial symmetry plane in open zone.It should be noted that the symmetrical plane of forward and backward two parts should overlap, its preparation method is: mode converter 2 is divided into two parts, first part is rectangle/circular converter 22, second part is circle/circular recess wave guide converter 21, if these two parts are integrated, time processing is shaped, and then uses the corrosion resistant stainless steel sheet| (plate) of suitable thickness, with upper and lower two of core press forming on forcing press.The end of the metal plate of its circular recess wave guide two wings separates it with wedge shape insulating materials 23, its length equals the length of circle in the mode converter/circular recess wave guide converter, width＞(0.1 λ+2mm), height is gradient to final circular recess wave guide height 〉=0.31 λ by zero by designing requirement.The bolting made from insulating materials it.First half slit with upper and lower two rolled-up stocks welds again.
The inlet side of rectangle/circular converter 22 is a rectangle if openly make two parts of mode converter then, go out end for circular, and the internal diameter that goes out to hold that should circle equals the inlet side Circularhole diameter of circle/circular recess wave guide converter, circular hole end with rectangle/circular converter 22 is connected with the roundlet nose end of circle/circular recess wave guide converter at last, just becomes mode converter 2.
(3) general assembly: the great circle nose end of two mode converters is joined with manhole two ends of slot wave waveguide microwave chemical reaction device respectively, the conveyer belt that is used for transmitting chemical reactant is horizontally through from the space of the centre of slot wave waveguide microwave chemical reaction device, has so just formed travelling-wave type microwave chemical reactor with slot wave guide of the present invention.
Claims (3)
1. travelling-wave type microwave chemical reactor with slot wave guide, it is characterized in that this device is made up of a slot wave waveguide microwave chemical reaction device (1) and 2 mode converters (2), wherein the microwave inlet side of slot wave waveguide microwave chemical reaction device (1) is connected to a mode converter (2) respectively with going out to hold, slot wave waveguide microwave chemical reaction device (1) adopts slot wave to lead composition, this slot wave is led by the two parallel metal flat boards (11) that separate with insulated column (13) and is formed, the direction that propagate along electromagnetic wave the symmetrical centre position of leading end face at slot wave is provided with through hole (12), mode converter (2) is made up of one section variable cross-section waveguide, its end is consistent with the microwave source waveguide, and the other end is led consistent with slot wave.
2. travelling-wave type microwave chemical reactor with slot wave guide according to claim 1 is characterized in that mode converter (2) is just the same with the geometry and the size of microwave chemical reactor (1) joint.
3. travelling-wave type microwave chemical reactor with slot wave guide according to claim 1, it is characterized in that mode converter (2) is made up of rectangle/circular converter (22) and circle/circular recess wave guide converter (21) two parts, the outer end of rectangle/circular converter (22) is rectangular opening (221), the inner is circular hole (222), small sircle hole one end of circular hole (222) one ends and circle/circular recess wave guide converter (21) joins, big hole one end of circle/circular recess wave guide converter (21) and the manhole (12) of slot wave waveguide microwave chemical reaction device (1) end join, be connected between the big hole of circle/circular recess wave guide converter (21) and the small sircle hole, the space of its connection is circular cone shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99114426A CN1093773C (en) | 1999-09-08 | 1999-09-08 | Travelling-wave type microwave chemical reactor with slot wave guide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99114426A CN1093773C (en) | 1999-09-08 | 1999-09-08 | Travelling-wave type microwave chemical reactor with slot wave guide |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1250685A CN1250685A (en) | 2000-04-19 |
| CN1093773C true CN1093773C (en) | 2002-11-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN99114426A Expired - Fee Related CN1093773C (en) | 1999-09-08 | 1999-09-08 | Travelling-wave type microwave chemical reactor with slot wave guide |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100352793C (en) * | 2006-01-20 | 2007-12-05 | 杨鸿生 | Groove waveguide microwave chemical reaction equipment for ethene preparation by natural gas and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2126658Y (en) * | 1992-06-29 | 1993-01-27 | 东南大学 | High-performance circular slot waveguide |
| CN2128016Y (en) * | 1992-06-29 | 1993-03-10 | 东南大学 | Round double-channel waveguide |
| WO1997013316A1 (en) * | 1995-10-05 | 1997-04-10 | Semipower Systems Inc. | Low inductance inverter |
| CN2284100Y (en) * | 1997-03-19 | 1998-06-17 | 中国人民解放军国防科工委后勤部军事医学研究所 | Microwave reaction unit |
| DE29821438U1 (en) * | 1997-12-11 | 1999-04-08 | Forschungszentrum Karlsruhe GmbH, 76133 Karlsruhe | Reactor for carrying out reactions between gaseous reactants |
| WO1999032221A1 (en) * | 1997-12-23 | 1999-07-01 | Cem Corporation | Gas agitation of microwave assisted chemical processes |
-
1999
- 1999-09-08 CN CN99114426A patent/CN1093773C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2126658Y (en) * | 1992-06-29 | 1993-01-27 | 东南大学 | High-performance circular slot waveguide |
| CN2128016Y (en) * | 1992-06-29 | 1993-03-10 | 东南大学 | Round double-channel waveguide |
| WO1997013316A1 (en) * | 1995-10-05 | 1997-04-10 | Semipower Systems Inc. | Low inductance inverter |
| CN2284100Y (en) * | 1997-03-19 | 1998-06-17 | 中国人民解放军国防科工委后勤部军事医学研究所 | Microwave reaction unit |
| DE29821438U1 (en) * | 1997-12-11 | 1999-04-08 | Forschungszentrum Karlsruhe GmbH, 76133 Karlsruhe | Reactor for carrying out reactions between gaseous reactants |
| WO1999032221A1 (en) * | 1997-12-23 | 1999-07-01 | Cem Corporation | Gas agitation of microwave assisted chemical processes |
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| CN1250685A (en) | 2000-04-19 |
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Granted publication date: 20021106 Termination date: 20110908 |