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Humidity-adjustable and content-adjustable ozone purification evaluation system and method

A technology for ozone purification and evaluation system, applied in the direction of chemical analysis using catalysis, can solve the problems of unstable ozone generation, high ozone humidity, ozone detection interference, etc. The effect of energy consumption

Active Publication Date: 2017-09-29
INST OF URBAN ENVIRONMENT CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the generation of ozone in the traditional smoke purification in the prior art is unstable, and the humidity of the ozone is high, which brings great interference to the detection of ozone

Method used

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  • Humidity-adjustable and content-adjustable ozone purification evaluation system and method

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Experimental program
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Effect test

Embodiment 1

[0055] A. will contain N with a volume fraction of 99.99% 2 and O 2 The cylinder gas is connected to the ozone purification evaluation system of the present invention;

[0056] B. At room temperature, the cylinder gas is passed into the equipment, and the N is controlled by the mass flow meter. 2 The flow rate is 800ml / min, O 2 The flow rate is 200ml / min, the two gases are mixed into the quartz glass coil, a monochromatic 185nm ultraviolet lamp is turned on for irradiation, the power is 36W, and the gas is discharged into the analysis and detection equipment;

[0057] C. Use the U.S. 2B model 202 type ozone analyzer (ozone detection device 6) to analyze the ozone concentration on-line in real time (its precision is 1.5ppb);

[0058] After 12 hours of online testing, the ozone gas distribution stability results are as follows: Figure 4 shown. Depend on Figure 4 It can be seen that the concentration of ozone generated after 20 minutes is stable, the constant concentratio...

Embodiment 2

[0061] A. will contain N with a volume fraction of 99.99% 2 and O 2 The cylinder gas is connected to the ozone purification evaluation system of the present invention;

[0062] B. At room temperature (25°C), the cylinder gas is passed into the equipment, and the N is controlled by a mass flow meter. 2 The flow rate is 800ml / min, and flows into the blow-off bottle containing deionized water. The blow-off bottle was placed in a water bath constant temperature environment, and the constant temperature was set at 15°C. After that with flow rate of 200ml / min O 2 Mix, enter the quartz glass tube, turn on a monochromatic 185nm ultraviolet lamp for irradiation, the power is 36W, and the empty tube is passed into the whole device;

[0063] C. The tail gas enters the gas drying device 5 (drying chamber) for drying pretreatment. The gas drying device 5 is a 500ml triangular washing bottle, and the inside is filled with 1 / 3 volume of concentrated sulfuric acid or calcium chloride part...

Embodiment 3

[0069] A. will contain N with a volume fraction of 99.99% 2 and O 2 The cylinder gas is connected to the ozone purification evaluation system of the present invention;

[0070] B. At room temperature (25°C), the cylinder gas is passed into the equipment, and the N is controlled by a mass flow meter. 2 The flow rate is 800ml / min, and it flows into the blow-off bottle containing deionized water or the blow-off bottle is dry and does not contain water. The blow-off bottle was placed in a water bath constant temperature environment, and the constant temperature was set at 15°C. After that with flow rate of 200ml / min O 2 Mix, enter the quartz glass tube, turn on a monochromatic 185nm ultraviolet lamp for irradiation, the power is 36W, and the empty tube is passed into the whole device;

[0071] C. Pass the mixed atmosphere into the quartz reaction tube equipped with solid materials. The solid materials are self-made manganese oxides with a weight of 0.2 grams. The pellets are s...

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Abstract

The invention provides a humidity-adjustable and content-adjustable ozone purification evaluation system and method. The ozone purification evaluation system comprises an ozone generating device, a water vapor generating device, a gas mixing device, an ozone purification reaction device and an ozone detection device, wherein the gas mixing device is arranged between the ozone generating device and the ozone purification reaction device; the ozone purification reaction device is arranged between the gas mixing device and the ozone detection device; gas outlets of the ozone generating device and the water vapor generating device are connected with a gas inlet of the gas mixing device; a gas drying device is arranged between the ozone purification reaction device and the ozone detection device. By adopting the ozone purification evaluation system, the humidity and content of an ozone atmosphere are adjustable, the detection and analysis of ozone are not interfered under the condition of high humidity, the ozone purification evaluation is more accurate and efficient, and the service life of the detection device is prolonged; the humidity-adjustable and content-adjustable ozone purification evaluation system and method can be widely applied in the fields of ozone pollution simulation and ozone generation.

Description

technical field [0001] The invention belongs to the technical field of air pollution purification, and relates to an evaluation system and evaluation method for ozone purification with adjustable humidity and content. Background technique [0002] Ozone (O 3 ) and oxygen (O 2 ) is an allotrope of oxygen, which has a double-edged sword effect on the environment on which human beings depend. In the atmospheric stratosphere, ozone is good for our living environment, it can resist harmful ultraviolet rays; however, near the surface, ozone is an invisible killer, which will cause varying degrees of damage to the human skin and nervous system It can also damage the immune function of the human body, cause chromosomal changes in lymphocytes, accelerate the aging of the human body, and lead to an increase in the birth rate of deformed children. The World Health Organization stipulates that the concentration of ozone in the environment for 8 hours of continuous work should not exc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N31/10
CPCG01N31/10Y02A50/20
Inventor 贺泓邓华单文坡
Owner INST OF URBAN ENVIRONMENT CHINESE ACAD OF SCI
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