Study on the Optimized Design of DeSOx Filter Operating at Low Temperature in Diesel Exhaust

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

Akio Kodama²  Yugo Osaka²  Kohei Yamada¹  Zhaohong He³  Takuya Tsujiguchi²  Hongyu Huang³ 

[1] Division of Human and Mechanical Science and Engineering, Graduate School of Natural Science and Technology, Kanazawa University;School of Mechanical Engineering, College of Science and Engineering, Kanazawa University;Chinese Academy of Science, Guangzhou Institute of Energy Conversion

关键词: DeSOx Filter;    Dry Desulfurization;    Manganese Oxide;   

DOI  :  10.1252/jcej.13we292

来源: Maruzen Company Ltd

【 摘 要 】

References(11)Cited-By(3)The removal of sulfur dioxide (SO2) contained in the combustion exhaust gas from medium-scale facilities is necessary because of its role as an air pollutant. In this study, we focus on dry DeSOx filters that use simple desulfurization materials to capture SO2; in particular, we used manganese dioxide (MnO2) that takes part in the sulfation (MnO2+SO2→MnSO4). We determined the reactivity of high-surface-area MnO2 (HSSA MnO2) with SO2 using thermogravimetry. We obtained the desulfurization rate for a sample of MnO2 that was wash-coated on a monolith. The MnO2 sample, having a specific surface area of 250 m2/g, absorbed 0.43–0.45 gSO2/gMnO2. Under this experimental condition, the conversion of the sulfation was dependent on the amount of the supported MnO2. The absorption efficiency of these samples was more than 90.0%. Based on our results, we estimated that 20 m3 of absorbent was required to capture the exhaust gas of an ocean ship with a crossing time of 20 d, operating at 8,500 kW power at 450°C.

【 授权许可】

Unknown