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钴钛层柱粘土催化剂催脱除零价汞

Keywords: 零价汞,燃煤烟气,钛层柱粘土,钴氧化物,催化脱除

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Abstract:

采用钴-钛层柱粘土催化剂,向烟气中添加HCl气体进行零价汞的催化脱除实验研究。考察了反应温度及催化剂的焙烧温度、Ti/粘土、活性组分(Co)负载量等制备条件对零价汞催化脱除效果的影响。研究表明,在HCl含量20×10-6的模拟烟气中,焙烧温度为400℃、Ti/粘土为15mmol/g、Co含量为5wt%(以CoO计)的钴钛层柱粘土催化剂(Co-Ti-PILCs)在空速为1.0×104h-1、温度为300℃时零价汞脱除效率为86.7%。

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