摘要
目的为有效降低洁净厂房毒物浓度,保护劳动者健康,实现新型回风装置优化及其自动控制,探讨甲醛初始浓度、风量、温度、相对湿度对新型回风装置净化效果的影响。方法在60m^3的模拟洁净厂房内,对安装有普通活性炭净化网、活性炭与光触媒净化网组合的新型回风装置15min净化甲醛效率进行测试。采用溶液吸收-酚试剂分光光度法测定甲醛浓度,在单因素试验确定两种净化网组合方式的基础上,采用正交试验,探讨风量、甲醛初始浓度、温度、相对湿度对新型回风装置净化效果的影响,确定回风装置净化甲醛的性能参数。结果新型回风装置中两种净化网组合方式的甲醛净化效率均高于普通活性炭净化网(P<0.05)。通过正交试验直接分析和方差分析显示,风量是最敏感的影响因素(F=18.894,P<0.05),其次是初始浓度(F=16.128,P<0.05),而温度、相对湿度几乎没有影响,差异均无统计学意义(F=0.041、0.599,P>0.05);LSD分析显示,风量475m^3/h与626m^3/h净化甲醛效率差异无统计学意义(P>0.05),从甲醛净化效率和节能角度综合考虑,风量设定为475m3/h时,新型回风装置对高浓度的甲醛有较高的净化效率。结论由活性炭与光触媒净化网组成的新型回风装置在洁净厂房不同温度、湿度的情况下,均能较好地发挥净化甲醛的作用,风量、初始浓度对其净化效率有影响。
Objective To effectively reduce the concentration of poisons in cleanroom, protect the health of workers, realize the optimization and automatic control of the new return air device. And the influence of initial concentration, air volume, temperature and relative humidity of formaldehyde on the purification effect of the new return air device was explored. Methods The purification effect of the new return air device installed with the activated carbon and the photocatalyst purification net or ordinary activated carbon purification network was tested in a 60m^3 simulated cleanroom. The concentration of formaldehyde was determined by solution absorption-phenol reagent spectrophotometry. Based on the single factor experiment to determine the combination of two purification nets. The effects of air volume, initial formaldehyde concentration, temperature and relative humidity on the purification effect of the new return air device were investigated by orthogonal test. Then, the performance parameters of the return air device to purify formaldehyde were determined. Results The formaldehyde purification efficiency of the two types of purification nets in the new return air device was higher than that of the ordinary activated carbon purification network (P<0.05). The combination of activated carbon and photocatalyst purification net has no effect on the formaldehyde purification efficiency of the return air device (P>0.05). According to the direct analysis and variance analysis, air volume was the most sensitive factor (F value is 18.894, P<0.05), followed by initial concentration (F value is 16.128, P<0.05), while temperature and relative humidity have little effect (F value is 0.041 and 0.599, respectively, P>0.05). LSD analysis showed that there was no significant difference in the purification efficiency of formaldehyde between 475m^3/h and 626m^3/h (P>0.05). From the perspective of formaldehyde purification efficiency and energy saving, when the air volume is set to 475m^3/h, the new return air device has higher purification efficiency for high concentration of formaldehyde. Conclusion The new return air device consisting of activated carbon and photocatalyst purification net can play a good purification role in cleanroom with different temperatures and different humidity. Its formaldehyde purification efficiency is affected by air volume and initial concentration.
作者
徐凯丽
杨红
谢景欣
王建峰
沈卫民
凌晨
伏相瑾
夏宇阳
韩昶玉
钟丽诗
范钰莹
Xu Kaili;Yang Hong;Xie Jingxin;Wang Jianfeng;Shen Weimin;Ling Chen;Fu Xiangjin;Xia Yuyang;Han Changyu;Zhong Lishi;Fan Yuying(Key Laboratory of Environmental Medicine Engineering of Ministry of Education, School of Public Health, Southeast University, Nanjing 210009, China;Institute of Occupational Disease Prevention, Jiangsu Provincial Center for Disease Control and Prevention, Nanjing 210028, China;Suzhou Goldswallow Purification Equipment Co., Ltd, Suzhou 215000, China)
出处
《中华劳动卫生职业病杂志》
CAS
CSCD
北大核心
2019年第5期347-351,共5页
Chinese Journal of Industrial Hygiene and Occupational Diseases
基金
国家重点研发计划资助项目(2016YFC0801700).
关键词
新型回风装置
洁净厂房
光触媒
活性炭
甲醛
New return air device
Clean room
Photocatalyst
Activated carbon
Formaldehyde
作者简介
通信作者:杨红,E-mail:yanghongr@hotmail.com;通信作者:谢景欣,E-mail:cdcxjx@163.com.
