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Large power ultrasonic wave micro-reactor

A micro-reactor and ultrasonic technology, applied in the fields of chemical equipment and ultrasonic devices, can solve the problems of low ultrasonic energy transfer efficiency, and achieve the effects of small attenuation, high power and large input power

Active Publication Date: 2015-09-23
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the method of using a medium to conduct ultrasonic energy from a sandwich ultrasonic transducer to a microreactor has a large input power, the efficiency of ultrasonic energy transfer is low, and usually only local areas of the microreactor can be ultrasonically enhanced.

Method used

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Examples

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Embodiment 1

[0030] In this embodiment, a high-power ultrasonic microreactor with a resonant frequency of 20 kilohertz is taken as an example. figure 1 It can be seen that the ultrasonic microreactor of this embodiment is composed of the microreactor 1 and the back cover 5 , the piezoelectric ceramic stack 4 and the front cover 3 constituting the sandwich ultrasonic transducer 2 .

[0031] The microreactor 1 of this embodiment is a plate-shaped microreactor with a rectangular cross section. This embodiment is made of aluminum alloy material, and its cross section is 80mm long, 70mm wide and 3mm thick. The sandwich ultrasonic transducer 2 is composed of a rear cover 5 , a piezoelectric ceramic stack 4 and a front cover 3 connected at the center by high-strength metal bolts. The piezoelectric ceramic stack 4 is composed of two piezoelectric ceramic sheets stacked coaxially to form a cylinder with a thickness of 10mm. Each piezoelectric ceramic sheet has a thickness of 5mm and a diameter of 4...

Embodiment 2

[0033] In this embodiment, a high-power ultrasonic microreactor with a resonant frequency of 30 kilohertz is used as an example. figure 1 It can be seen that the ultrasonic microreactor in this embodiment is composed of the microreactor 1 and the rear cover 5 , the piezoelectric ceramic stack 4 and the front cover 3 constituting the sandwich ultrasonic transducer 2 .

[0034] The microreactor 1 of the present embodiment is a plate-shaped microreactor with a rectangular cross section, which is made of a titanium alloy material, and its cross section is 100 mm long, 100 mm wide, and 15 mm thick. The sandwich ultrasonic transducer 2 is composed of a rear cover 5 , a piezoelectric ceramic stack 4 and a front cover 3 connected at the center by high-strength metal bolts. The piezoelectric ceramic stack 4 is composed of 4 piezoelectric ceramic sheets stacked coaxially to form a cylinder with a thickness of 20mm. The thickness of each piezoelectric ceramic sheet is 5mm and the diamete...

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Abstract

The invention relates to a large power ultrasonic wave micro-reactor. A horn-shaped sandwich type energy converter with large radiating surface can be directly connected with the micro-reactor in a rigid way, so the energy converter and the micro-reactor can resonate as a whole; the length of the whole ultrasonic micro-reactor in a direction perpendicular to a front radiating surface is a half of the ultrasonic wave length; when the whole ultrasonic micro-reactor works at the resonant frequency, the micro-reactor has the maximum vibration amplitude, so strong ultrasonic energy is achieved in the whole micro-reactor; the ultrasonic wave micro-reactor possesses great power, high ultrasonic energy transmitting efficiency and large ultrasonic reinforced covering area; technology fluid mixture or mass transferring can be intensified for the micro-reactor; and a problem of blocking of the micro-reactor can be solved.

Description

technical field [0001] The invention belongs to the fields of chemical equipment, ultrasonic devices and the like, and relates to a high-power ultrasonic microreactor structure, in particular to a high-power ultrasonic microreactor which uses ultrasonic vibration to prevent microreactor blockage and enhance mixed mass transfer. Background technique [0002] A microreactor refers to a fluidic device whose internal structure has a characteristic size ranging from several microns to several millimeters (this internal structure is also called a microchannel). Compared with traditional large-scale chemical equipment, micro-chemical equipment based on micro-reactors has the advantages of high specific surface area, fast heat and mass transfer, safe operation, easy enlargement, and small footprint, making micro-reactors the most promising One of the chemical technology. [0003] However, there are also some new problems that need to be solved urgently in the development process of...

Claims

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Application Information

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IPC IPC(8): B06B1/06
Inventor 董正亚陈光文袁权
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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