采用连续管式固定床反应器,在压力为常压、反应温度为100～600℃、无氧和含氧条件下考察了NiMo/Al2O3催化剂上H2催化脱除SO2、NO的性能.结果表明:NiMo/Al2 O3催化剂具有良好的脱硫脱硝的性能,SO2转化率、单质硫选择性均高于单独脱硫或单独脱硝时,但N2生成率低于单独脱硝时,其中SO2转化率随温度的升高而提高,直至达到100％;含氧条件下的SO2转化率、单质硫选择性、N2生成率整体优于无氧条件下的结果;SO2的存在对NO的吸附有抑制作用,NO的存在显著提高了SO2转化率和单质硫选择性.%The performance of NiMo/Al2O3 hydrogenation catalyst for removing SO2 and NO in presence of H2 was investigated under conditions of constant pressure,100-600 ℃,oxygen/oxygen free atmospheres in a continuous tubular fixed bed reactor.The results showed that NiMo/Al2O3 catalyst has good simultaneous desulfurization and denitration performance.The SO2 conversion,elemental sulfur selectivity are higher than the value of desulfurization and denitration alone,the SO2 conversion increases with the increase of temperature,even as high as 100％,but N2 formation rate is lower than the value of separate denitration.Under oxygen atmosphere conditions,SO2 conversion,elemental sulfur selectivity,N2 yield are all better than that under oxygen free conditions.The presence of SO2 has an inhibitory effect on the adsorption of NO,and the presence of NO significantly improves SO2 conversion and elemental sulfur selectivity.
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