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Preparation of Porous Lime Filters and SOx Removal Characteristics  

Lee Kwanghee (한양대학교 지구환경시스템공학과)
Park Jaikoo (한양대학교 지구환경시스템공학과)
Kim Hyunjung ((주)마이크로포어)
Publication Information
Journal of Korean Society for Atmospheric Environment / v.20, no.2, 2004 , pp. 153-159 More about this Journal
Abstract
This study was focused on evaluating physical properties and SO$_{x}$ removal capability of porous lime filters prepared by a foaming and a gelcasting method. Porosities of lime filters ranged from 55% to 85%, and their mean pore sizes were about 95 ${\mu}{\textrm}{m}$. It was observed that porous lime filters had the continuous pore structure that most pores were inter-connected by many windows. Before SO$_{x}$ removal reaction a surface of porous lime filters was made up of calcium oxide, but after reaction calcium sulfate became a main component. The SO$_{x}$ removal efficiency and the conversion ratio of calcium oxide to calcium sulfate increased according to reaction temperature and porosity. At 100$0^{\circ}C$, SO$_{x}$ removal efficiency of filters was always over 98% regardless of the porosity. In case of the filter with the porosity of 85%, the conversion ratios of calcium oxide increased according to the reaction temperature, and they were in the range 30% to 60%. to 60%.
Keywords
Porous lime filters; Pores; Windows; $SO_{x}$ removal efficiency;
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