CN101811751B - Traveling wave type ultrasound reaction vessel - Google Patents
Traveling wave type ultrasound reaction vessel Download PDFInfo
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- CN101811751B CN101811751B CN2010101510535A CN201010151053A CN101811751B CN 101811751 B CN101811751 B CN 101811751B CN 2010101510535 A CN2010101510535 A CN 2010101510535A CN 201010151053 A CN201010151053 A CN 201010151053A CN 101811751 B CN101811751 B CN 101811751B
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- 238000002604 ultrasonography Methods 0.000 title claims abstract description 16
- 238000006243 chemical reaction Methods 0.000 title claims abstract description 9
- 239000007788 liquid Substances 0.000 claims abstract description 19
- 238000007654 immersion Methods 0.000 claims description 10
- 230000005855 radiation Effects 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 9
- 238000000527 sonication Methods 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 238000004364 calculation method Methods 0.000 description 5
- 238000004458 analytical method Methods 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000004659 sterilization and disinfection Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 239000003651 drinking water Substances 0.000 description 2
- 235000020188 drinking water Nutrition 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 238000012935 Averaging Methods 0.000 description 1
- 239000002028 Biomass Substances 0.000 description 1
- 206010020843 Hyperthermia Diseases 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 231100000357 carcinogen Toxicity 0.000 description 1
- 239000003183 carcinogenic agent Substances 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000036031 hyperthermia Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 210000004243 sweat Anatomy 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
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Abstract
The invention provides a traveling wave type ultrasound reaction vessel, which relates to a device for processing liquid by using the ultrasound cavitation effect. The traveling wave type ultrasound reaction vessel comprises a box body (4), at least one pair of ultrasound energy exchangers and an ultrasound energy exchanger driving circuit, wherein the box body (4) is used for containing liquid to be processed, each pair of ultrasound energy exchangers consists of a first energy exchanger (2) and a second energy exchanger (6) which are respectively arranged on the box wall in opposite directions, and ultrasound traveling waves are formed in the box body of the reaction vessel by the overlapping of ultrasound standing waves with the 90 degrees of phase difference on space and 90 degrees of phase difference on time. The sound reaction vessel uses a traveling wave ultrasound field for working. Although each field point has different time phases, each field point has the same sound pressure amplitude value in theory. Because the intensity of the sound cavitation effect in the liquid only depends on the sound pressure amplitude value, and is irrelevant with the phases of the sound pressure, the sound cavitation effect in the traveling wave ultrasound field is more uniform than that in the standing wave ultrasound field.
Description
Technical field
Travelling-wave-type ultrasonic reactor of the present invention relates to a kind of device that utilizes ultrasonic cavitation effect treat liquid.
Background technology
Localized hyperthermia's high pressure that ultrasonic reactor utilizes the ultrasonic cavitation effect to be produced is handled liquid such as water.The ultrasonic reactor system structurally comprise in casing, the casing be processed liquid, to being processed the drive circuit that liquid applies hyperacoustic ultrasonic transducer and ultrasonic transducer.There is great application prospect the aspects such as production of the physics catalysis of organic decomposition in the decomposition of its carcinogen in drinking water disinfection sterilization, drinking water, the disinfection of waste water, the waste water, chemical synthesis and crystallization process, acceleration, biomass gas and the liquid fuel of sweat.The operation principle of existing ultrasonic reactor, of list of references (T.J.Mason, J.P.Lorimer, Applied Sonochemistry, Wiley-VCH, Weinheim, 2002), mainly be to utilize the standing-wave ultrasonic field in the casing to cause sound cavitation effect.Adopt the sound pressure amplitude of this its ultrasonic field of mode spatially inhomogeneous, exist acoustic pressure node and antinodal points.Sound pressure amplitude is zero on the acoustic pressure node, and sound pressure amplitude is maximum on the acoustic pressure antinodal points.For this reason, near the liquid of acoustic pressure antinodal points can occur can not be by the phenomenon of abundant processing by near the liquid sonication exceedingly, the acoustic pressure node.This can cause the inhomogeneous of sonication and the low problem of acoustic energy utilization rate.
Summary of the invention
Inhomogeneous and the low problem of acoustic energy utilization rate for the sonication that overcomes existing ultrasonic reactor; Patent of the present invention provides new ultrasonic reactor; The uniform ultrasonic field of this ultrasonic reactor utilization is carried out sonication to liquid wherein, with even sonication that realizes sound reactor and the utilization rate that improves acoustic energy in the sound reactor.
A kind of travelling-wave-type ultrasonic reactor is characterized in that: comprise holding casing, at least one pair of ultrasonic transducer and the ultrasonic transducer driving circuit that is processed liquid; Above-mentioned every pair of ultrasonic transducer is formed by first transducer and second transducer that are separately positioned on the two relative tank walls; And first and second ultrasonic transducers meet the following conditions: the first and second transducer acoustic radiation faces spatially each other over against; Have identical structure and size; The ac drive voltage that is applied has the time phase difference of identical frequency f, amplitude and 90 °, satisfies d=(2m+1) c/ (4f) apart from d between the first and second transducer acoustic radiation faces, and wherein c is the velocity of sound that is processed liquid; F is the ac drive voltage frequency, and m is the natural number more than or equal to 0.In order to guarantee the uniformity of ultrasonic field acoustic density, the traveling-wave ultrasonic field that every pair of ultrasonic transducer produced is in parastate and does not have cross section.
Above-mentioned travelling-wave-type ultrasonic reactor can be used the dull and stereotyped ultrasonic transducer of immersion, or has bright literary composition (Langevin) ultrasonic transducer of plug-in type of dull and stereotyped radiating surface.
When above-mentioned condition of work is met; The ultrasonic standing wave that produces in the liquid of first and second ultrasonic transducers between them all has 90 ° phase difference on time and space, the ultrasonic travelling wave that meeting generation one runs between first and second ultrasonic transducers after their stacks.
Sound reactor utilizes the traveling-wave ultrasonic field to come work, though each point has the different time phase place, has identical sound pressure amplitude in theory.Because the intensity of sound cavitation effect only depends on the phase-independent of the amplitude and the acoustic pressure of acoustic pressure in the liquid, thereby the sound cavitation effect in the traveling-wave ultrasonic field is more even than the sound cavitation effect in the standing-wave ultrasonic field.
Through utilizing the ultrasonic travelling wave in the ultrasonic reactor casing to make that the acoustic density in the ultrasonic reactor casing is more even, so make ultrasonic reactor sonication more evenly, the capacity usage ratio of sound field is higher.Ultrasonic reactor can be represented with the heterogeneity index NU1 of sound field in the performance aspect sonication uniformity and the acoustic energy utilization rate:
P wherein
aBe a sound pressure amplitude of putting, p
AmBe p
aSpatial averaging, V
0It is the volume of sound field.The heterogeneity index NU of sound field
1More little, the performance of ultrasonic reactor aspect sonication uniformity and acoustic energy utilization rate is just good more.The NU of traditional standing wave type ultrasonic reactor
1Be that the 0.447. Theoretical Calculation shows: patent of the present invention can be NU
1Index reduces to 0.07.
Description of drawings
The ultrasonic reactor casing of Fig. 1: embodiment 1 and the structure chart of transducer; Wherein Fig. 1 (a) is the profile of ultrasonic reactor, and Fig. 1 (b) is the vertical view of ultrasonic reactor.
The ultrasonic reactor casing of Fig. 2: embodiment 2 and the structure chart of transducer; Wherein Fig. 2 (a) is the profile of ultrasonic reactor, and Fig. 2 (b) is the vertical view of ultrasonic reactor.
Label title among the figure: 1, by the liquid of sonication, 2, first transducer, 3, first wall, 4, casing, 5, the capable wave sound field in the liquid, 6, second transducer, 7, second wall, the radiating surface of 8, first transducer, the radiating surface of 9, second transducer.
The specific embodiment
The ultrasonic reactor of embodiment one is as shown in Figure 1.
Have in the rectangle metal cabinet of ultrasonic reactor of the dull and stereotyped ultrasonic transducer of a pair of immersion the water that is processed is housed.Dull and stereotyped ultrasonic transducer of first immersion and the dull and stereotyped ultrasonic transducer of second immersion are separately fixed on first wall 3 and second wall 7 of casing 4.First transducer 2 and second transducer 6 are dull and stereotyped ultrasonic transducer, the radiating surface 8 of first transducer and the radiating surface 9 of second transducer each other over against.First and second ultrasonic transducers have identical structure, size and material.Be added in the time phase difference that ac drive voltage on first and second transducers has identical frequency f, amplitude and 90 °.Satisfy d=(2m+1) c/ (4f) apart from d between the acoustic radiation face of first and second transducers, m=8 wherein, c be water the velocity of sound (=1500m/s).Under these conditions, can form a ultrasonic travelling wave between first and second transducers.
The inside dimension of rectangle metal cabinet is 33.88cm (length) * 13cm (wide) * 36cm (height).The height of water is that the size of the dull and stereotyped ultrasonic transducer 2 of 31cm. first and second immersions and 6 is 30cm (height) * 12cm (wide) * 1cm (thick) in the casing, and operating frequency f is 20kHz, and operating voltage is 65Vrms.
In the present embodiment, according to the ultrasonic field heterogeneity index NU of FEM calculation (COMSOL MULTIPHYSICS) acquisition
1Theoretical value be 0.07, be far smaller than the NU of traditional standing wave type ultrasonic reactor
1(=0.447).In FEM calculation, utilize the frequency analysis function (Harmonics Analyses, Acoustics Module) in this software acoustic module; The absorption coefficient of sound field is 1.0 * 10
-51/m; Ultrasonic field is assumed that linear field.This is illustrated in and utilizes single traveling-wave ultrasonic field energy to improve the uniformity of sonicated and the utilization rate of acoustic energy widely in the ultrasonic reactor.
The ultrasonic reactor of embodiment two is as shown in Figure 2.
Have in the rectangle metal cabinet of ultrasonic reactor of the dull and stereotyped ultrasonic transducers of the two pairs of immersions water that is processed is housed.Two the first dull and stereotyped ultrasonic transducers of immersion and two the second dull and stereotyped ultrasonic transducers of immersion are separately fixed on first wall 3 and second wall 7 of casing 4.First transducer of every pair of transducer and the radiating surface of second transducer each other over against.First and second ultrasonic transducers have identical structure and size.Be added in the time phase difference that ac drive voltage on first and second transducers has identical frequency f, amplitude and 90 °.Satisfy d=(2m+1) c/ (4f) apart from d between the acoustic radiation face of first and second transducers, m=8 wherein, c be water the velocity of sound (=1500m/s).Under these conditions, the ultrasonic travelling wave of every pair of transducer formation is parallel to each other.
The inside dimension of rectangle metal cabinet is 33.88cm (length) * 26cm (wide) * 36cm (height).The height of water is that the size of the dull and stereotyped ultrasonic transducer of 31cm. first and second immersions is 30cm (height) * 12cm (wide) * 1cm (thick) in the casing, and operating frequency f is 20kHz, and operating voltage is 65Vrms.
In the present embodiment, according to the ultrasonic field heterogeneity index NU of FEM calculation (COMSOL MULTIPHYSICS) acquisition
1Theoretical value be 0.12, be far smaller than the NU of traditional standing wave type ultrasonic reactor
1(=0.447).In FEM calculation, utilize the frequency analysis function (Harmonics Analyses, Acoustics Module) in this software acoustic module; The absorption coefficient of sound field is 1.0 * 10
-51/m; Ultrasonic field is assumed that linear field.This is illustrated in and utilizes a plurality of traveling-wave ultrasonics field also can improve the uniformity of its sonicated and the utilization rate of acoustic energy widely in the ultrasonic reactor.
Claims (3)
1. a traveling wave type ultrasound reaction vessel is characterized in that: comprise holding casing (4), at least one pair of ultrasonic transducer and the ultrasonic transducer driving circuit that is processed liquid; Above-mentioned every pair of ultrasonic transducer is formed by first transducer (2) and second transducer (6) that are separately positioned on the two relative tank walls; And first and second ultrasonic transducers meet the following conditions: the first and second transducer acoustic radiation faces spatially each other over against; Have identical structure and size; The ac drive voltage that is applied has the time phase difference of identical frequency f, amplitude and 90 °, satisfies d=(2m+1) c/ (4f) apart from d between the first and second transducer acoustic radiation faces, and wherein c is the velocity of sound that is processed liquid; F is the ac drive voltage frequency, and m is the natural number more than or equal to 0; In order to guarantee the uniformity of ultrasonic field acoustic density, the traveling-wave ultrasonic field that every pair of ultrasonic transducer produced is in parastate and does not have cross section.
2. traveling wave type ultrasound reaction vessel according to claim 1 is characterized in that: said ultrasonic transducer is the dull and stereotyped ultrasonic transducer of immersion.
3. traveling wave type ultrasound reaction vessel according to claim 1 is characterized in that: said ultrasonic transducer is the bright civilian ultrasonic transducer of plug-in type with dull and stereotyped radiating surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101510535A CN101811751B (en) | 2010-04-15 | 2010-04-15 | Traveling wave type ultrasound reaction vessel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101510535A CN101811751B (en) | 2010-04-15 | 2010-04-15 | Traveling wave type ultrasound reaction vessel |
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| Publication Number | Publication Date |
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| CN101811751A CN101811751A (en) | 2010-08-25 |
| CN101811751B true CN101811751B (en) | 2012-02-22 |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2455086C1 (en) * | 2011-05-03 | 2012-07-10 | Андрей Александрович Геталов | Method of ultrasonic cavitation processing of fluids and objects placed therein |
| RU2479346C1 (en) * | 2011-08-29 | 2013-04-20 | Андрей Александрович Геталов | Method of simultaneous ultrasound cavitation processing of different-composition media |
| CN102794145A (en) * | 2012-07-13 | 2012-11-28 | 中国科学院声学研究所 | Acoustic cavitation device |
| CN103864173B (en) * | 2014-02-26 | 2015-10-28 | 南京航空航天大学 | A kind of assemble on multiple position simultaneously micro-/receive the method for particle and device thereof |
| CN104409126B (en) * | 2014-11-25 | 2017-05-17 | 中国人民解放军第二炮兵工程大学 | Ultrasonic standing wave radioactive wastewater treatment device |
| CN104722106B (en) * | 2015-03-25 | 2016-04-06 | 陕西师范大学 | A kind of ultrasonic separation means of fine particle |
| CN109980322B (en) * | 2019-04-22 | 2021-04-13 | 南京航空航天大学 | Ultrasonic-assisted metal-air battery working method and system |
| CN110004632A (en) * | 2019-04-30 | 2019-07-12 | 广州大学 | A kind of traveling wave type ultrasonic cleaning/dirt separation system and its control method |
| CN110004631A (en) * | 2019-04-30 | 2019-07-12 | 广州大学 | Cleaning and the dirt separation system of traveling wave type ultrasonic are generated using piezoelectric ceramics |
| CN111256810B (en) * | 2020-03-23 | 2021-01-15 | 河北师范大学 | High-precision vector hydrophone |
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| DE10394301B4 (en) * | 2003-09-26 | 2011-07-21 | ULTRAWAVES-Wasser- und Umwelttechnologien GmbH, 21073 | ultrasonic reactor |
| CN201024106Y (en) * | 2007-03-13 | 2008-02-20 | 吴亿成 | Sewage treatment device using mixed frequency supersonic technology |
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