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含表面活性剂溶液的雾化特性及对细颗粒物的强化去除效果

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喷雾技术在气体净化、粉尘控制、化学合成等领域应用广泛,其中液滴尺寸控制及提高喷雾均匀性是该技术面临的挑战.为此,本文拟利用表面活性剂对水雾的雾化特性进行调控,以提高喷雾均匀性,并进一步探究其对细颗粒物去除的促进作用.本文采用实验研究,首先对三种不同性质表面活性剂(十二烷基苯磺酸钠、十六烷基三甲基溴化铵、吐温80)溶液的雾化特性进行了分析,探究了表面活性剂的种类和浓度对于雾化特性的影响.结果表明,与去离子水相比,表面活性剂的加入可以显著提升喷雾的均匀性,喷雾总体粒径减小,并且非离子型表面活性剂吐温80雾化形成的小液滴数量占比最高.当表面活性剂溶液浓度达到临界胶束浓度(CMC)时,三种类型表面活性剂溶液的液滴数达到峰值,以此作为最佳雾化浓度.此外,通过喷雾去除细颗粒物实验表明,含表面活性剂溶液喷雾可以加快细颗粒物去除速率.
Atomization characteristics of surfactant-containing solutions and enhanced removal of fine particulate matter
Spraying technology is widely used in the fields of gas purification,dust control and chemical synthesis.Among them,droplet size control and improvement of spray uniformity are the challenges of this technology.For this reason,this paper intends to use surfactants to regulate the atomization characteristics of water mist to improve spray uniformity and further explore its promotion effect on fine particle removal.In this paper,an experimental study was conducted to analyze the atomization characteristics of three surfactants(sodium dodecylbenzene sulfonate,cetyltrimethylammonium bromide,and Tween 80)solutions with different properties,and to investigate the effects of surfactant type and concentration on the atomization characteristics.The results showed that compared with deionized water,the addition of surfactants could significantly improve the spray uniformity,the overall particle size of the spray decreased,and the nonionic surfactant Tween 80(TW80)atomized the highest percentage of small droplets formed.The number of droplets of the three types of surfactant solutions peaked when the surfactant solution concentration reached the critical micelle concentration(CMC),which was taken as the optimal atomization concentration.In addition,the fine particulate removal experiments by spraying showed that spraying with surfactant solutions could accelerate the removal rate of fine particulate.

spraysurfactantfine particulate matterdroplet size

顾海林、陈斌康、郭佳琪、冯洁、简青山、王进卿、张光学

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中国计量大学计量测试工程学院,浙江 杭州 310018

喷雾 表面活性剂 细颗粒物 液滴粒径

国家自然科学基金国家自然科学基金浙江省科技计划

52306207520062072022C03056

2024

化工进展
中国化工学会,化学工业出版社

化工进展

CSTPCD北大核心
影响因子:1.062
ISSN:1000-6613
年,卷(期):2024.43(2)
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