Traveling wave type ultrasound reaction vessel

An ultrasonic reactor, traveling wave technology, applied in the chemical/physical/physicochemical process of energy application, mechanical oscillation water/sewage treatment, etc., can solve the problems of uneven acoustic treatment and low utilization rate of acoustic energy

Inactive Publication Date: 2010-08-25
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the problems of uneven sonication and low utilization of sound energy in existing ultrasonic reactors, the patent of the present invention provides a new ultrasonic reactor,

Method used

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  • Traveling wave type ultrasound reaction vessel
  • Traveling wave type ultrasound reaction vessel
  • Traveling wave type ultrasound reaction vessel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The ultrasonic reactor of Embodiment 1 is shown in FIG. 1 .

[0017] Treated water is contained in the rectangular metal box 3 of the ultrasonic reactor with a pair of submerged flat-plate ultrasonic transducers. The first immersion-type flat-panel ultrasonic transducer and the second immersion-type flat-panel ultrasonic transducer are respectively fixed on the first wall 3 and the second wall 7 of the box 1 . The first transducer 2 and the second transducer 6 are planar ultrasonic transducers, and the radiation surface 8 of the first transducer and the radiation surface 9 of the second transducer face each other. The first and second ultrasonic transducers have the same structure, size and material. The AC drive voltages applied to the first and second transducers have the same frequency f, amplitude and time phase difference of 90°. The distance d between the sound radiating surfaces of the first and second transducers satisfies d=(2m+1)c / (4f), where m=8 and c is th...

Embodiment 2

[0020] The ultrasonic reactor of Example 2 is shown in FIG. 2 .

[0021] The rectangular metal box of the ultrasonic reactor with two pairs of submerged flat-panel ultrasonic transducers contains the water to be treated. Two first immersion-type flat-panel ultrasonic transducers and two second immersion-type flat-panel ultrasonic transducers are respectively fixed on the first wall 3 and the second wall 7 of the box 1 . Radiation surfaces of the first transducer and the second transducer of each pair of transducers face each other. The first and second ultrasonic transducers have the same structure and dimensions. The AC driving voltages applied to the first and second transducers have the same frequency f, amplitude and time phase difference of 90°. The distance d between the sound radiating surfaces of the first and second transducers satisfies d=(2m+1)c / (4f), where m=8 and c is the sound velocity of water (=1500m / s). Under the above conditions, the ultrasonic traveling w...

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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 (3), at least one pair of ultrasound energy exchangers and an ultrasound energy exchanger driving circuit, wherein the box body (3) 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 [0001] The traveling wave ultrasonic reactor of the invention relates to a device for treating liquid by using ultrasonic cavitation effect. Background technique [0002] The ultrasonic reactor uses the local high temperature and high pressure generated by the ultrasonic cavitation effect to treat liquids such as water. Structurally, the ultrasonic reactor system includes a tank, the liquid to be processed in the tank, an ultrasonic transducer for applying ultrasonic waves to the liquid to be processed, and a drive circuit for the ultrasonic transducer. It is used in disinfection and sterilization of drinking water, decomposition of carcinogens in drinking water, disinfection and sterilization of wastewater, decomposition of organic matter in wastewater, physical catalysis of chemical synthesis and crystallization process, acceleration of fermentation process, production of biomass gas and liquid fuel, etc. It has great application prospect. The working pri...

Claims

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Application Information

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IPC IPC(8): C02F1/36B01J19/10
Inventor 胡俊辉姚志远杨颖赵淳生
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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