Method for generating hydroxide radicals by employing ultrasonic atomization-assisted ionization discharge

A technology of ultrasonic atomization and free radicals, applied in chemical instruments and methods, chemistry, chemical/physical processes, etc., can solve the problems of reduced efficiency, secondary pollution, water content reduction, etc., to avoid secondary pollution and reaction efficiency. High, simple process effect

Inactive Publication Date: 2015-03-25
华文蔚
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the conventional method for generating hydroxyl radicals has the following problems: when processing hydroxyl radicals, a large amount of catalysts, oxidants, etc. need to be added, and there are problems such as secondary pollution, safety, and increased costs; restricted by various factors, most processes have not yet achieved high efficiency, Large-scale generation of high-concentration hydroxyl radicals is difficult to apply to actual pollutant treatment projects
[0014] Chinese application 200810156932X discloses a method of using oxygen and atomized water to carry out hydroxyl radicals; in

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The ultrasonic converter made by submerging the hydrogen peroxide solution into the high-frequency piezoelectric ceramic sheet converts electrical energy into mechanical vibration, and applies a resonant electrical signal to make the converter generate ultrasonic vibration in the range of 2MHZ. The ultrasonic wave converts the hydrogen peroxide solution Atomized into an aerosol with a diameter of 1 μm; the aerosol enters the ionization discharge plasma reactor, and generates hydroxyl radicals under the action of high frequency and high pressure; the hydrogen peroxide concentration is 20%; the discharge in the plasma reactor is Narrow gap strong ionized gas discharge, the discharge equivalent electric field strength is 600Td; there is a fan at the outlet of the plasma reactor, and the gas flow with hydrogen and oxygen free radicals obtained after starting the fan is transported to the surface of the object to be sterilized.

Embodiment 2

[0026] The ultrasonic converter made by submerging the hydrogen peroxide solution into the high-frequency piezoelectric ceramic sheet converts electrical energy into mechanical vibration, and applies a resonant electrical signal to make the converter generate ultrasonic vibration in the range of 2MHZ. The ultrasonic wave converts the hydrogen peroxide solution Atomized into an aerosol with a diameter of 0.1 μm; the aerosol enters the ionization discharge plasma reactor, and generates hydroxyl radicals under the action of high frequency and high pressure; the hydrogen peroxide concentration is 10%; the discharge in the plasma reactor It is a strong ionized gas discharge with a narrow gap, and the discharge equivalent electric field strength is 500Td; a fan is installed at the outlet of the plasma reactor, and the gas flow with hydrogen and oxygen free radicals obtained after starting the fan is transported to the surface of the object to be sterilized .

Embodiment 3

[0028] A method for generating hydroxyl radicals by ultrasonic atomization-assisted ionization discharge, which is characterized in that it includes the steps of: submerging hydrogen peroxide aqueous solution into an ultrasonic converter made of a high-frequency piezoelectric ceramic sheet, which converts electrical energy into mechanical vibration , apply a resonant electrical signal to make the converter generate ultrasonic vibrations in the range of 1.5MHZ, and the ultrasonic waves atomize the hydrogen peroxide solution into an aerosol with a diameter of 0.5 μm; the aerosol enters the ionization discharge plasma reactor, under the action of high frequency and high pressure Hydroxyl radicals are generated under the following conditions; the hydrogen peroxide concentration is 12%; the discharge in the plasma reactor is a narrow gap strong ionized gas discharge, and the discharge is equivalent to an electric field strength of 500Td; a fan is provided at the outlet of the plasma ...

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Abstract

The invention discloses a method for generating hydroxide radicals by employing ultrasonic atomization-assisted ionization discharge. The method comprises the following steps: submerging a high-frequency piezoelectric ceramic plate with an aqueous hydrogen peroxide solution, so as to prepare an ultrasonic transducer; converting electric energy into mechanical resonance by virtue of the transducer; exerting a resonant electrical signal, so that the transducer generates ultrasonic vibration in the range of 1-2MHz; atomizing a hydrogen peroxide solution into aerosol of which the diameter is 0.1-1mum by virtue of an ultrasonic wave; feeding the aerosol into an ionization discharge plasma reactor; generating hydroxyl radicals under action of high frequency and high voltage, wherein the concentration of hydrogen peroxide is 1%-20%; discharge in the plasma reactor is narrow-gap strong ionization gas discharge; the discharge reduced electric field intensity is 400Td-600Td; a fan is arranged at the outlet of the plasma reactor; and a gas flow with the hydroxide radicals, which is obtained after the fan is started, is conveyed to the surface of a to-be-sterilized object.

Description

technical field [0001] The invention relates to a method for generating hydroxyl free radicals by ultrasonic atomization assisted ionization discharge. Background technique [0002] There are several types of surface disinfection and sterilization methods: [0003] 1. Traditional thermal sterilization technology [0004] Traditional heat sterilization is an effective sterilization method, which can kill various microorganisms, and the degree of sterilization can be accurately controlled. Although the thermal sterilization method is widely used, the high temperature required by this method can easily lead to the decomposition of heat-sensitive components and the loss of volatile components, and the energy consumption is high, which can easily damage precision medical instruments. [0005] 2. Non-thermal sterilization technology [0006] (1) Ultraviolet rays: can kill various microorganisms, including bacterial propagules, spores, mycobacteria, viruses, fungi, rickettsia an...

Claims

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Application Information

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IPC IPC(8): B01J19/08B01J19/10A61L2/22A61L101/22
CPCA61L2/14A61L2202/11B01J19/088B01J19/10B01J2219/0805B01J2219/0888B01J2219/0894
Inventor 华文蔚
Owner 华文蔚
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