不同喷淋吸收液对分布式实验室预处理酸性废气脱除系统效果的影响与分析  

Influence and Analysis for Different Spray Absorbing Liquids on the Distributed Laboratory Pretreatment Acidic Waste Gas Treatment System

作　　者：任鑫森 冯敦风 袁晓萌 王晓建[1] 靖朝森 罗兴章[2] REN Xinsen;FENG Dunfeng;YUAN Xiaomeng;WANG Xiaojian;JING Chaosen;LUO Xingzhang(Shanghai Tobacco Group Co.,Ltd.,Shanghai 200082,China;Department of Environmental Science and Engineering,Fudan University,Shanghai 200433,China)

机构地区：[1]上海烟草集团有限责任公司,上海200082 [2]复旦大学环境科学与工程系,上海200433

出　　处：《复旦学报（自然科学版）》2024年第4期529-537,共9页Journal of Fudan University：Natural Science

摘　　要：本研究建立了一个实验室预处理酸性废气脱除中试系统,该系统主要采用喷淋原理脱除实验室酸性废气,实验研究了不同风速下3种喷淋液对硫酸雾、硝酸雾、HCl、HF等处理效果,探究不同喷淋吸收液对分布式实验室预处理酸性废气脱除效果的影响。结果表明,当喷淋水量为8 L/min,水温15~20℃,系统排风柜断面风速为0.3~0.5 m/s时,碱喷淋液的酸雾平均脱除效率最高,脱除F^(-)、Cl^(-)、NO_(3)^(-)和SO_(4)^(2-)的效率分别为93.1%、91.7%、88.3%和92.4%;水喷淋吸收液脱除F^(-)、Cl^(-)和NO_(3)^(-)的平均效率分别为68.8%、67.8%和64.9%;微纳米气泡水(MNBs)喷淋吸收液脱除F^(-)、Cl^(-)和NO_(3)^(-)效率较水喷淋吸收液提升了约13%。同时,微纳米气泡喷淋液可有效处理SO_(2)、NO_(x),且对NO_(x)的处理更加显著,原因与微泡崩溃产生的·OH等自由基具有氧化作用、微纳米气泡本身Zeta电位高、比表面积大以及微纳米气泡可能作为异质凝结的凝结核有关。This study established a pilot-scale system which primarily employs the principal of spraying for the removal of acidic waste gases in a laboratory.The research investigated the treatment effects under different operating conditions for sulfuric acid mist,nitric acid mist,HCl,HF,etc.,using three types of spray liquids.The study aimed to explore the impact of various spray absorption liquids on the removal efficiency of distributed laboratory pre-treatment acidic waste gases.The results indicated that,with a spray water volume of 8 L/min,a water temperature of 15—20℃,and a system fume hood cross-sectional air velocity of 0.3—0.5 m/s,the alkaline spray solution exhibited the highest average removal efficiency for acid mist.The removal efficiencies for F^(-),Cl^(-),NO_(3)^(-),and SO_(4)^(2-) were 93.1%,91.7%,88.3%,and 92.4%,respectively.Water spray absorption liquid exhibited average removal efficiencies of 68.8%,67.8%,and 64.9%for F^(-),Cl^(-),and NO-3,respectively.The removal efficiency of F^(-),Cl^(-),and NO_(3)^(-) in the micro-nanobubbles water spray absorption liquid was approximately 13%higher than that in the water spray absorption liquid.Additionally,nano-bubble spray liquid effectively treated SO 2 and NO_(x),with a more significant effect on NO_(x).which is related to the oxidation of radicals such as·OH and other similar radicals generated by microbubble collapse,as well as the high Zeta potential,large surface area,and the potential of micro-nano bubbles to act as heterogeneous condensation nuclei.

关 键 词：酸雾处理 脱硫脱硝 微纳米气泡水 通风橱后喷淋系统 

分 类 号：X701.7[环境科学与工程—环境工程]