【摘要】 随着选择性催化还原(SCR)烟气脱硝技术在燃煤电厂的普遍应用,废旧催化剂需作为危险废物加以处置利用的问题日益突出。分析了国内外废旧SCR催化剂处置利用技术现状,参考当前污泥掺烧及水泥窑协同处置危险废弃物技术,提出了废旧催化剂的掺烧利用方案。清洗处理试验研究结果表明,经有效清洗后的废催化剂浸出毒性满足国家毒性鉴别标准规定的限值,其中微量元素的含量低于常规燃煤;掺烧试验及理论计算结果表明,在严格控制掺烧比例的情况下,掺烧过程中的污染物排放可控,对锅炉燃烧安全性及经济性影响较小。该技术具有工艺简单、环境风险小、处置成本低等优点,推广应用前景较好。更多还原

【Abstract】 Due to the application of selective catalytic reduction( SCR) on coal-fired power plant,the problem of waste catalytic becomes increasingly outstanding. The technology to dispose waste catalyst in worldwide was analyzed. Refer to slurry blending combustion technology,a waste catalytic blending combustion plan was indicated. Cleaning test approved that catalyst leaching toxicity meet the limit of toxicity identification standard regulations of the state,including the content of trace elements is lower than conventional coal. Blending test and calculation approved that the pollutant emission is under control. The technology has the simple process,low environmental risk and low disposal cost. This could be widespread.更多还原