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硝酸提浓改造过程中高效NH3-SCR脱硝催化剂开发及工业应用

Industrial Catalysis(2019)

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Abstract
针对硝酸工业装置尾气特点研究开发NH3-SCR脱硝催化剂,在空速40000 h-1和入口NOx浓度1000×10-6条件下,NH3-SCR脱硝催化剂最佳反应温度为370℃,NOx出口浓度<20×10-6,脱除率达98%.经过1000 h寿命评价,脱除率超过95%,脱硝催化剂表现出良好的活性.根据实际需要进行条型和蜂窝型脱硝催化剂工业生产,条型和蜂窝型脱硝催化剂均能满足硝酸装置提浓改造后尾气NOx浓度增加的要求,催化剂效率高,装填量小,系统压降小,NOx出口浓度<20×10-6,条型脱硝催化剂反应器压降<4.5 kPa,蜂窝型脱硝催化剂反应器压降<2 kPa.
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