化学团聚剂作用下燃煤颗粒物团聚脱除

发布时间：2018-02-03 17:35

本文关键词： 燃煤飞灰粒子团聚清除效率雾化表面活性剂　出处：《环境科学与技术》2017年10期 　论文类型：期刊论文

【摘要】：燃煤细颗粒物对人体健康和环境能见度都会产生不利影响。团聚技术是清除细颗粒的有效方法。在团聚室内引入化学团聚剂,改变颗粒物表面性能,探索团聚剂的组成对燃煤颗粒物团聚清除效率的影响。实验结果表明非离子型表面活性剂OP-10(烷基酚聚氧乙烯醚)对颗粒物的团聚清除效率最高;大分子絮凝剂的作用较弱。OP-10与絮凝剂混合体系的应用使颗粒物的团聚清除效率达到30%~33%,比单独应用表面活性剂OP-10能提高10%~13%。团聚剂体系中加入无机盐Na NO3的浓度提高,颗粒的清除效率有所提高。OP-10团聚剂体系在近中性条件下颗粒物团聚效率较高;APAM(阴离子聚丙烯酰胺)混合体系在较高p H值条件下对颗粒物有更好的清除效率。电镜照片表明团聚剂能够促进颗粒物间更紧密的结合形成团聚体。
[Abstract]:The agglomeration technology is an effective method to remove fine particles. Chemical agglomeration agent is introduced in the agglomeration room to change the surface properties of particles. The effect of agglomeration agent composition on agglomeration removal efficiency of coal-fired particulates was explored. The experimental results showed that non-ionic surfactant OP-10 (alkylphenol polyoxyethylene ether) had the highest agglomeration removal efficiency. The effect of macromolecular flocculant is weak. The application of mixed system of macromolecular flocculant and flocculant makes the agglomeration removal efficiency of particles reach 30% and 33%. Compared with the surfactant OP-10 alone, the concentration of Na NO3 was increased by 10% and 13%. The concentration of Na NO3 was increased with the addition of inorganic salt in the agglomeration system. The scavenging efficiency of particles was improved. OP-10 agglomerator system had higher agglomeration efficiency under near-neutral conditions. The APAM (Anionic Polyacrylamide) mixed system had a better scavenging efficiency for particulate matter at higher pH value, and the electron microscope photos showed that the agglomeration agent could promote the closer binding between particles to form aggregates.
【作者单位】：青岛大学化学化工学院;
【基金】：国家自然科学基金(21206080) 山东省重点研发项目(2015GSF117026)
【分类号】：X773
【正文快照】： 《环境科学与技术》编辑部:(网址)http://fjks.chinajournal.net.cn(电话)027-87643502(电子信箱)hjkxyjs@vip.126.com近年来,我国工业迅速的发展,同时由于化石燃料和生物质燃烧以及垃圾焚烧带来的大气污染问题日趋严重。《环境空气质量标准》(GB 3095-2012)中评价空气污染的

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