Development of processing technology for deactivated SCR denitration catalyst

Abstract

Abstract: To control the large amount of nitrogen oxides in the flue gas exhausted by coalfired boilers, selective catalytic reduction (SCR) denitration technology has been widely applied. The key of the technology is the performance of SCR denitration catalyst. SCR denitration catalyst with low activity but in favorable regeneration conditions can be recycled by regeneration treatment. Different or integrated regeneration techniques can be used on catalysts deactivated for different reasons.With the increase of regeneration times, SCR denitration catalyst as a consumable material will eventually become hazardous solid waste. The deactivated SCR denitration catalyst harmless treatment and recycling of metal elements are studied, and correspondent treatment techniques are put forward, which provides concepts and directions for future development.

Key words: denitration catalyst, SCR, deactivated, regeneration, harmless treatment, recycling of metal elements

〖WT4”BZ〗ZHANG Chunping1，QIN Chuan2，YANG Gang3，LIU Lu1，HU Yuelong4，CHENG Weiliang1.

Development of processing technology for deactivated SCR denitration catalyst[J]. Huadian Technology, 2020, 42(1): 8-14.

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Development of processing technology for deactivated SCR denitration catalyst

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