Improvement in Plume Dispersion Formulas for Stack Emissions Using Ground-based Imaging-DOAS Data

Bulletin of the Korean chemical society

Soonchul Kwon¹  Hanlim Lee¹  Ukkyo Jeong¹  Hyunkee Hong¹  Jaeyong Ryu¹  Sung Kyun Shin¹  Youngmin Noh¹ 

关键词: Plume dispersion;    Mixing ratio;    DOAS;    Sulfur dioxide;    Nitrogen dioxide;   

DOI  :  

学科分类：化学（综合）

来源: Korean Chemical Society

【 摘 要 】

This study introduces a new method of combining Imaging Differential Optical Absorption Spectroscopy (Imaging-DOAS) data and plume dispersion formulas for power plant emissions to determine the threedimensional structure of a dispersing pollution plume and the spatial distributions of trace gas volume mixing ratios (VMRs) under conditions of negligible water droplet and aerosol effects on radiative transfer within the plume. This novel remote-sensing method, applied to a power plant stack plume, was used to calculate the twodimensional distributions of sulfur dioxide (SO2) and nitrogen dioxide (NO2) VMRs in stack emissions for the first time. High SO2 VMRs were observed only near the emission source, whereas high NO2 VMRs were observed at locations several hundreds of meters away from the initial emission. The results of this study demonstrate the capability of this new method as a tool for estimating plume dimensions and trace gas VMRs in power plant emissions.

【 授权许可】

Unknown