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Method for promoting ozone generation

A technology of ozone generation and oxygen, applied in the direction of ozone preparation, etc., can solve the problem of low ozone generation concentration, achieve the effect of high ozone generation concentration, increase of ozone generation concentration, and low energy consumption

Inactive Publication Date: 2019-11-05
INST OF URBAN ENVIRONMENT CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ultraviolet irradiation is a method commonly used in laboratories to prepare ozone, but the concentration of ozone produced is generally low

Method used

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  • Method for promoting ozone generation
  • Method for promoting ozone generation
  • Method for promoting ozone generation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] Methods to increase the concentration of ozone generation:

[0058] (1) control the high-purity oxygen of 240mL / min with mass flowmeter and pass into quartz circulation tube (diameter 12mm, length 10cm), set two 40-watt 185nm wavelength ultraviolet lamps externally, and irradiate the circulating oxygen to stimulate ozone generation;

[0059] (2) the gas of step (1) is mixed with the high-purity nitrogen whose flow rate is 960mL / min, and the total gas flow rate after mixing is 1200mL / min;

[0060] (3) the mixed gas obtained by step (2) is 8mm in diameter, and the length is a quartz reaction tube of 10cm, and 0.1g 20-40 purpose pseudo-boehmite particles are housed in the reaction tube to obtain the gas that the ozone generation concentration promotes .

[0061] The ozone concentration in the gas is detected online in real time by the American 2B ozone analyzer (standard test method for ultraviolet absorption).

Embodiment 2

[0063] Methods of increasing the concentration of ozone generation:

[0064] (1) control the high-purity oxygen of 240mL / min with mass flowmeter and pass into quartz circulation tube (diameter 12mm, length 10cm), set two 40-watt 185nm wavelength ultraviolet lamps externally, and irradiate the circulating oxygen to stimulate ozone generation;

[0065] (2) Passing high-purity nitrogen into a deionized water evaporator with a constant temperature of 35°C at a flow rate of 700 mL / min and bringing in water vapor to obtain high-purity nitrogen with water vapor, wherein the water vapor concentration is 0.54%;

[0066] (3) mixing the gas irradiated by the ultraviolet lamp in the step (1) with the high-purity nitrogen with water vapor obtained in the step (2) and the high-purity nitrogen of another 260 mL / min, and controlling the total flow to be 1200 mL / min;

[0067] (4) the mixed gas that step (3) obtains is 8mm by diameter, and the length is the quartz reaction tube of 10cm, and 0.1...

Embodiment 3

[0070] The difference between this example and Example 1 is that the 0.1g 20-40 mesh pseudo-boehmite particles in step (3) are replaced with 0.1g 20-40 mesh alumina particles, and other conditions are completely compared with those in Example 1. same.

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Abstract

The invention relates to a method for promoting ozone generation. The method includes the steps of conducting ultraviolet irradiation on oxygen-containing gas to generate ozone, and making the ozone pass through a catalyst bed layer so that the ozone generation concentration can be remarkably increased. By means of the method, the ozone generation concentration in the ultraviolet-irradiated gas can be effectively increased, the ozone generation concentration in the gas passing through the catalyst bed layer is 1.14-1.4 times that in the gas not passing through the catalyst bed layer, the method is easy to operate, low in device cost and low in energy consumption, and the gas with the specific ozone concentration can be rapidly and stably obtained.

Description

technical field [0001] The invention belongs to the field of ozone generation, and in particular relates to a method for promoting ozone generation. Background technique [0002] Ozone, the chemical formula is O 3 , also known as triatomic oxygen, superoxide, named for its odor similar to fishy smell, it can be reduced to oxygen by itself at room temperature. Its specific gravity is larger than that of oxygen, and it is easily soluble in water and easily decomposed. Since ozone is composed of an oxygen atom carried by an oxygen molecule, it is determined that it is only a temporary state. Except for the oxygen atom carried by the oxygen atom, the remaining oxygen atoms are combined into oxygen and enter a stable state. [0003] Ozone is versatile and can fade most organic pigments. It can slowly erode rubber and cork and oxidize organic unsaturated compounds. Commonly used in: disinfection and sterilization of beverages, air purification, bleaching, water treatment and d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B13/10
CPCC01B13/10
Inventor 贺泓邓华单文坡李要彬
Owner INST OF URBAN ENVIRONMENT CHINESE ACAD OF SCI
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