折流式管状反应器对室内甲醛的净化效果

周雪梅; 刘鹏; 杨雅鑫; 罗田翼

doi:10.12030/j.cjee.201803060

环境工程学报

折流式管状反应器对室内甲醛的净化效果

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周雪梅, 刘鹏, 杨雅鑫, 罗田翼. 折流式管状反应器对室内甲醛的净化效果[J]. 环境工程学报, 2018, 12(8): 2288-2294. doi: 10.12030/j.cjee.201803060

引用本文:

周雪梅, 刘鹏, 杨雅鑫, 罗田翼. 折流式管状反应器对室内甲醛的净化效果[J]. 环境工程学报, 2018, 12(8): 2288-2294. doi: 10.12030/j.cjee.201803060

ZHOU Xuemei, LIU Peng, YANG Yaxin, LUO Tianyi. Purifying effect of baffled tubular reactor on indoor formaldehyde[J]. Chinese Journal of Environmental Engineering, 2018, 12(8): 2288-2294. doi: 10.12030/j.cjee.201803060

Citation:

ZHOU Xuemei, LIU Peng, YANG Yaxin, LUO Tianyi. Purifying effect of baffled tubular reactor on indoor formaldehyde[J]. Chinese Journal of Environmental Engineering, 2018, 12(8): 2288-2294. doi: 10.12030/j.cjee.201803060

折流式管状反应器对室内甲醛的净化效果

1.
贵州大学土木工程学院，贵阳 550025
基金项目:
贵州省土木工程一流学科建设项目（2017000006）

贵州省科技计划项目（黔科合LH字[2017]7242号）

贵州大学2017年度学术新苗培养及创新探索专项（黔科合平台人才[2017]5788）

贵州大学引进人才科研基金项目（贵大人基合字[2015]22号）

Purifying effect of baffled tubular reactor on indoor formaldehyde

1.
College of Civil Engineering , Guizhou University, Guiyang 550025,China
Fund Project:

摘要: 利用PCO技术，针对现有的室内挥发性有机污染物，设计一种能与建筑空调系统的通风换气设备相结合的折流式管状反应器，以甲醛为目标污染物，对其净化效果进行实验分析。结果表明：折流式管状反应器对于甲醛的降解处理效果高于传统的管状反应器，其转化率及矿化率均大于传统管状反应器；相较于波长较长的黑光灯，波长为254 nm的杀菌灯利用率更高，实验效果优于黑光灯；不同初始浓度下甲醛的反应有效度η基本不受催化层厚度影响；以波长254 nm的杀菌灯为紫外光源时，由于光强衰减快，使得催化层厚度对传质速率无明显作用；以波长为365 nm的黑光灯为紫外灯源时，甲醛η值随催化层厚度增加而增大，故在此实验条件下的光催化反应中，紫外光吸收量、反应速率以及反应有效度均会随催化剂负载量增加而增大。
- 光催化氧化 /
- 甲醛 /
- 净化效果 /
- 矿化率
Abstract: Using the PCO technology, aiming at the existing indoor VOCs, the baffled tubular reactor which can be combined with ventilation equipment in the air conditioning system of building is designed. Formaldehyde was chose as the target pollutant and analyse its purification effect. The result shows that the effect of degrading the formaldehyde in the tubular reactor is higher than that of the traditional tubular reactor, and the conversion rate and mineralization rate of the baffled tubular reactor are greater than the traditional tubular reactor. Compared with the black light that have longer wavelength, the sterilizing lamp with the wavelength of 254 nm is more efficient, and the experimental result is better than the black light. The reaction effectiveness η of the formaldehyde at different initial concentrations is not affected by the thickness of the catalyst layer. When using the sterilizing lamp with the wavelength of 254 nm. For ultraviolet light source, the thickness of the catalytic layer has no significant effect on the mass transfer rate due to the fast attenuation of light intensity. Also when the black light with a wavelength of 365 nm is using as an ultraviolet light source, the η value of formaldehyde will increase with the increase of the catalyst loading. Therefore, in the photocatalytic reaction under this experimental condition,the amount of ultraviolet light absorbed, the reaction rate, and the effectiveness of the reaction will increase as the catalyst loading increases.
- photocatalytic oxidation /
- formaldehyde /
- purification effect /
- mineralization rate

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折流式管状反应器对室内甲醛的净化效果

1. 贵州大学土木工程学院，贵阳 550025

基金项目:

贵州省土木工程一流学科建设项目（2017000006）

贵州省科技计划项目（黔科合LH字[2017]7242号）

贵州大学2017年度学术新苗培养及创新探索专项（黔科合平台人才[2017]5788）

贵州大学引进人才科研基金项目（贵大人基合字[2015]22号）

关键词:

摘要: 利用PCO技术，针对现有的室内挥发性有机污染物，设计一种能与建筑空调系统的通风换气设备相结合的折流式管状反应器，以甲醛为目标污染物，对其净化效果进行实验分析。结果表明：折流式管状反应器对于甲醛的降解处理效果高于传统的管状反应器，其转化率及矿化率均大于传统管状反应器；相较于波长较长的黑光灯，波长为254 nm的杀菌灯利用率更高，实验效果优于黑光灯；不同初始浓度下甲醛的反应有效度η基本不受催化层厚度影响；以波长254 nm的杀菌灯为紫外光源时，由于光强衰减快，使得催化层厚度对传质速率无明显作用；以波长为365 nm的黑光灯为紫外灯源时，甲醛η值随催化层厚度增加而增大，故在此实验条件下的光催化反应中，紫外光吸收量、反应速率以及反应有效度均会随催化剂负载量增加而增大。

English Abstract

Purifying effect of baffled tubular reactor on indoor formaldehyde

1. College of Civil Engineering , Guizhou University, Guiyang 550025,China

Fund Project:

Keywords:

Abstract: Using the PCO technology, aiming at the existing indoor VOCs, the baffled tubular reactor which can be combined with ventilation equipment in the air conditioning system of building is designed. Formaldehyde was chose as the target pollutant and analyse its purification effect. The result shows that the effect of degrading the formaldehyde in the tubular reactor is higher than that of the traditional tubular reactor, and the conversion rate and mineralization rate of the baffled tubular reactor are greater than the traditional tubular reactor. Compared with the black light that have longer wavelength, the sterilizing lamp with the wavelength of 254 nm is more efficient, and the experimental result is better than the black light. The reaction effectiveness η of the formaldehyde at different initial concentrations is not affected by the thickness of the catalyst layer. When using the sterilizing lamp with the wavelength of 254 nm. For ultraviolet light source, the thickness of the catalytic layer has no significant effect on the mass transfer rate due to the fast attenuation of light intensity. Also when the black light with a wavelength of 365 nm is using as an ultraviolet light source, the η value of formaldehyde will increase with the increase of the catalyst loading. Therefore, in the photocatalytic reaction under this experimental condition,the amount of ultraviolet light absorbed, the reaction rate, and the effectiveness of the reaction will increase as the catalyst loading increases.

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折流式管状反应器对室内甲醛的净化效果

Purifying effect of baffled tubular reactor on indoor formaldehyde

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折流式管状反应器对室内甲醛的净化效果

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Purifying effect of baffled tubular reactor on indoor formaldehyde

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