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以污泥为载体的金属氧化物脱硝催化剂的研究

Keywords: 剩余污泥,热解,催化剂,氮氧化物

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Abstract:

以城市污水处理厂剩余污泥为原料,用氯化锌、硝酸锰和硝酸铁化学浸渍、高温热解制备脱除NO的催化剂。用微型气固相催化反应装置考察了该催化剂在CO选择性催化还原NO中的应用效果及寿命。实验结果表明:在350~550℃时的催化活性较高,在450℃时NO的最大转化率可达97.1%;催化剂的活性良好,经660min的活性测试,催化剂的活性只降低了约3%。对该催化剂进行了BET、X射线衍射和扫描电镜分析,结果表明,该催化剂具有丰富的晶体结构,而且表面及空隙间负载的活性粒子较多,这些特征也表明该催化剂具有良好的催化性能。

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