화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.18, No.1, 513-519, January, 2012
DOI10.1016/j.jiec.2011.11.070  Export Citation
Regeneration of full-scale commercial honeycomb monolith catalyst (V2O5-WO3/TiO2) used in coal-fired power plant
Xuesong Shang1, 2, Gongren Hu2, Chi He1, Jinping Zhao1, Fuwang Zhang1, Ya Xu1, Yunfeng Zhang1, 2, Jianrong Li1, and Jinsheng Chen1, †
  • 1Key Lab of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
  • 2College of Chemical Engineering, Huaqiao University, Xiamen 361021, China
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An effective and applicable method for the regeneration of used commercial full-scale honeycomb monolith catalysts in China (V2O5-WO3/TiO2) is firstly reported. The de-ionized water and dilute sulfuric acid solution with a relatively low concentration (pH = 2) are potent reagent to regenerated the catalysts used for about 30,000 h in coal-fired power plant. All samples were systematically characterized by TEM, N2 adsorption/desorption, EDX, FT-IR and XPS techniques. The evaluation results reveal that the activity of the used catalysts can be obviously improved after regeneration processes. Moreover, the regenerated catalysts possess superior activity under different gas hourly space velocity (GHSV), and SO2 oxidation rate is lower than 1% in all cases. The regeneration method can remove the deposits, restore active sites and prevent nanoparticles aggregation as well as active phases leaching. Overall, these processes have promised as effective approaches for industrial V2O5.WO3/TiO2 catalysts regeneration.
Keywords:SCR;V2O5-WO3/TiO2 catalysts;Regeneration;Washing;Acidification
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