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Remanufacturing of Commercial $V_2O_5-WO_3/TiO_2$ Catalyst used in the SCR Process of Incinerator  

Yoon, Goan-Gu (Research Institute of Catalyst Technology, Hanseo University)
Yoo, Man-Sik (Environment Management Corporation)
Lim, Jong-Sun (Research Institute of Catalyst Technology, Hanseo University)
Kim, Tae-Won (Research Institute of Catalyst Technology, Hanseo University)
Park, Hea-Kyung (Research Institute of Catalyst Technology, Hanseo University)
Publication Information
Journal of Korean Society of Environmental Engineers / v.27, no.9, 2005 , pp. 970-977 More about this Journal
Abstract
The commercial $V_2O_5-WO_3/TiO_2$ catalysts which had been exposed to the off gas from incinerator for a long time were remanufactured by washing with distilled water and arid solution and reimpregnation with catalytic active components($V_2O_5-WO_3$). The catalytic properties and NOx conversion reactivity of those catalysts were examined by analysis equipment and NOx conversion experiment. Under the experimental condition used in this study, the remanufactured catalysts activated by distilled water ultra sonic cleaning, the catalytic activity was recovered in the range of $66{\sim}93%$ of that of the fresh and the maximum activity was showed when the ultra sonic cleaning time was more than 3 minutes. The remanufactured catalysts by acid solution ultra sonic cleaning, the catalytic activity was recovered in the range of $81{\sim}97%$ of that of the fresh catalyst and the maximum catalytic activity was shooed when the pH of the acid solution was 5. The remanufactured catalysts by reimpregnation with $V_2O_5$ and $WO_3$, the catalytic activity was recovered in the range of $87{\sim}100%$ of that of the fresh catalyst. Maximum catalytic activity was showed when the $V_2O_5$ was reimpregnated more than 1.0 wt %. In this case, the catalytic activity was recovered 97% of that of the fresh catalyst especially at the $150^{\circ}C$ of the experimental temperature.
Keywords
Catalysts Remanufacturing; SCR Catalyst; NOx; $V_2O_5-WO_3/TiO_2$;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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