【摘 要】
:
焦化行业烟气脱硝治理技术普遍采用SCR法,为解决中低温烟气工况下脱硝性能稳定达标,延长中低温脱硝催化剂的运行周期,降低过程能耗.采用X射线荧光光谱、热重、SEM、XPS和BET等手段对山西某焦化厂中低温SCR脱硝中的非钒系列化剂进行理化性能表征,阐述了中低温含SO2烟气工况下SCR脱硝催化剂失活的现象.结果表明:在中低温含SO2烟气工况下,SCR脱硝催化剂性能下降主要原因是表面存在粘性的硫酸氢铵,覆盖催化剂微孔,进而致使催化剂有效比表面积下降.
【机 构】
:
中科新天地(合肥)环保科技有限公司,安徽 合肥 230088
论文部分内容阅读
焦化行业烟气脱硝治理技术普遍采用SCR法,为解决中低温烟气工况下脱硝性能稳定达标,延长中低温脱硝催化剂的运行周期,降低过程能耗.采用X射线荧光光谱、热重、SEM、XPS和BET等手段对山西某焦化厂中低温SCR脱硝中的非钒系列化剂进行理化性能表征,阐述了中低温含SO2烟气工况下SCR脱硝催化剂失活的现象.结果表明:在中低温含SO2烟气工况下,SCR脱硝催化剂性能下降主要原因是表面存在粘性的硫酸氢铵,覆盖催化剂微孔,进而致使催化剂有效比表面积下降.
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