抗碱金属抗磷抗硫中毒SCR脱硝催化剂及其制备方法和应用
本发明属于烟气脱硝催化剂技术领域,公开了一种抗碱金属抗磷抗硫中毒SCR脱硝催化剂及其制备方法和应用。该催化剂由内到外依次为载体层、活性层和防护层,所述载体层为负载SiO‑TiO涂层的堇青石蜂窝陶瓷;所述活性层为负载MnO‑CeO‑WO复合活性成分的TiO‑ZrO载体;所述防护层为掺杂CeO的AlO‑ZSM‑5涂层。本发明催化剂采用三层结构,实现“物理拦截+化学吸附+高效催化”协同,同时抵御碱金属、磷、硫复合中毒,催化剂寿命延长2倍。
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