Particle Size Distributions following Condensational Growth in Continuous Flow Aerosol Reactors as Derived from Residence Time Distributions: Theoretical Development and Application to Secondary Organic Aerosol
Particle Size Distributions following Condensational Growth in Continuous Flow Aerosol Reactors as Derived from Residence Time Distributions: Theoretical Development and Application to Secondary Organic Aerosol
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根据停留时间分布得出连续流气溶胶反应器中冷凝生长后的粒径分布：二次有机气溶胶的理论发展和应用
DOI：
10.1080/02786826.2012.683204
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发表时间：
2012
影响因子：
5.2
通讯作者：
S. Martin
中科院分区：
文献类型：
--
作者：
M. Kuwata;S. Martin
在连续流动反应器（例如连续混合流动反应器（CMFR）和流管反应器）中的冷凝生长被广泛用于气溶胶科学和技术领域，以产生用于工业用途和科学研究的颗粒。从这些反应器的流出物中的颗粒的数量-直径分布n（d）的分析方程的发展是有利的数据集的反演，以获得热力学和动力学参数，以及合理的实验设计。在这项研究中，方程推导出的数量直径分布n（d）的粒子停留时间的概率密度函数p（t）。具体地，冷凝生长速率用于基于p（t）导出n（d）。分析方程开发CMFR，层流反应器，和分散活塞流反应器，重点CMFR。CMFR方程准确地描述了在哈佛环境室（HEC）中收集的α-蒎烯和β-香芹烯臭氧分解的数据集。解释是，冷凝生长可以被认为是在这些实验中的颗粒直径的变化的主要机制。版权所有2012美国气溶胶研究协会
Condensational growth in continuous flow reactors, such as continuously mixed flow reactors (CMFRs) and flow tube reactors, is widely employed in the field of aerosol science and technology to produce particles for industrial use and scientific research. The development of analytical equations for the number-diameter distribution n(d) of the particles in the outflow from these reactors is advantageous both for the inversion of data sets to obtain thermodynamic and kinetic parameters as well as for the rational design of experiments. In this study, equations are derived that relate the number-diameter distribution n(d) to the probability density function p(t) of particle residence time. Specifically, the condensational growth rate is used to derive n(d) based on p(t). Analytical equations are developed for CMFRs, laminar-flow reactors, and dispersive plug-flow reactors, with a focus on CMFRs. The CMFR equation accurately describes data sets collected for α-pinene and β-caryophyllene ozonolysis in the Harvard Environmental Chamber (HEC). The interpretation is that condensational growth can be considered as the principal mechanism for change in particle diameter in these experiments. Copyright 2012 American Association for Aerosol Research