The challenge of measuring sulfuric acid aerosols: Number concentration and size evaluation using a condensation particle counter (CPC) and an electrical low pressure impactor (ELPI+)
The challenge of measuring sulfuric acid aerosols: Number concentration and size evaluation using a condensation particle counter (CPC) and an electrical low pressure impactor (ELPI+)
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DOI：
10.1016/j.jaerosci.2013.09.006
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发表时间：
2014-01-01
影响因子：
4.5
通讯作者：
Schaber, K.
中科院分区：
文献类型：
--
作者：
Brachert, L.;Mertens, J.;Schaber, K.
本文对湿法烟气净化过程中产生的硫酸气溶胶的两种不同测量方法进行了研究。冷凝粒子计数器（UFCPC, PALAS GmbH）提供了关于数值浓度的信息。使用电气低压冲击器（ELPI+, Dekati Ltd）也可以进行尺寸评估。两种测量方法都表明，在中试工厂控制良好的条件下，两种方法的浓度都在10(8)cm（-3）以上，并显示出良好的一致性。利用ELPI+可以观察到稀释对挥发性气溶胶大小的影响。现有模拟工具的预测趋势可以得到验证：硫酸浓度越高，液滴尺寸越大。而随着硫酸浓度的变化，其数值浓度变化不大。(C) 2013 Elsevier Ltd.版权所有。
In this study, two different methods for the measurement of the sulfuric acid aerosol which is formed in wet flue gas cleaning processes have been investigated. The condensation particle counter (UFCPC, PALAS GmbH) provides information about the number concentration. With the electrical low pressure impactor (ELPI+, Dekati Ltd.) also the size evaluation is possible. Both measurement methods reveal number concentrations above 10(8) cm(-3) under well controlled conditions in a pilot plant and the good conformance of the both methods is shown. With the ELPI+ the effect of dilution on the size of the volatile aerosol can be observed. The predicted trend of an existing simulation tool can be verified: the higher the sulfuric acid concentration, the larger are the droplet sizes. The number concentration, however, doesn't change considerably when altering the sulfuric acid concentration. (C) 2013 Elsevier Ltd. All rights reserved.