多层喷雾洗涤塔对粉尘颗粒的脱除特性

发布时间：2018-01-10 05:34

本文关键词：多层喷雾洗涤塔对粉尘颗粒的脱除特性　出处：《化工进展》2017年07期 　论文类型：期刊论文

【摘要】：通过搭建多层喷雾洗涤塔实验台,研究了液气体积比、塔内气体平均流速、粉尘浓度、喷雾压力等操作参数对除尘效率的影响规律。研究结果表明:洗涤塔内喷雾层数对除尘效率的影响最为显著,与传统的单层相比,除尘效率可以提高15%以上,并且入口粉尘浓度的变化对其除尘效率的影响较小。增大喷雾压力可以有效提升除尘效率,当喷雾压力为0.5~0.6MPa时除尘效率变化趋于稳定。在相同操作参数下,适当降低气体在塔内平均流速有利于提高洗涤塔的除尘效率,对于三层喷雾洗涤,最佳的气体塔内平均流速为0.6~0.8m/s。当喷雾压力为0.6MPa、塔内气体平均气速为0.6m/s、液气体积比为5.27的条件下,三层喷雾除尘的效率可以达到98.3%。
[Abstract]:Through setting up the multi-layer spray scrubber experiment of liquid gas volume ratio, average flow rate, column gas dust concentration, influence of spray pressure and other operating parameters on the removal efficiency. The results show that the effect of washing spray layers on the dust removal efficiency of the most significant, compared with the traditional single layer, the dust removal efficiency can be increased by 15% above, and change the entrance concentration effect on the dust removal efficiency is small. Increasing spray pressure can effectively improve the removal efficiency, when the spray pressure is 0.5~0.6MPa removal efficiency tends to be stable. Under the same operating conditions, appropriate to reduce the gas can improve the removal efficiency of the washing tower in the tower for the average flow velocity, three layer spray washing the average velocity of gas tower, the best is 0.6~0.8m/s. when the spray pressure is 0.6MPa, the average gas tower gas velocity 0.6m/s, liquid gas volume ratio of 5.27 conditions Next, the efficiency of three layers of spray dust can reach 98.3%.

【作者单位】：东北电力大学油页岩综合利用教育部工程研究中心;吉林吉顺油页岩开发有限公司;
【基金】：教育部长江学者和创新团队发展计划(IRT13052) 吉林省自然科学基金(20150101033JC) 吉林市科技计划(201464044) 吉教科合字2015-237项目
【分类号】：X701.2
【正文快照】： 煤炭作为我国能源结构中最重要的组成部分,其总产量的84%用于直接燃烧[1-2]。而其燃烧过程中烟排放的烟尘占我国总烟尘排放量的70%以上[3],由此导致的粉尘污染是我国大气污染的主要原因之一[4-5]。粉尘污染的危害主要体现在对人体健康的危害和全球气候及城市能见度的影响[6-9]

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