在小型连续固定流化床装置上考察SO2、NOx在吸附剂上的吸附方式、经过吸附SO2和NOx运转后的吸附剂的临氢再生性能以及氢气对气相中SO2、NO的还原性能.结果表明:在常压、200℃的条件下,SO2和NOx以化学吸附的形式存在于吸附剂上；升温到600℃时由不稳定盐热分解产生的SO2和NOx分别占各自吸附质量的12％和14％.在常压、600℃、以氢气为还原气、再生时间不小于20 min时,可以恢复运转吸附剂的吸附能力；气相中氢气过量分别达到S()2、NO理论耗氢量的3倍和8倍以上时,常压下SO2、NO的完全转化温度不高于500℃.%The adsorbing behaviors of SO2 and Nox over a solid adsorbent,the regeneration performance of spent adsorbent in the presence of hydrogen, and the hydrogen reduction of SO2 and NO in gas phase were studied by a continuous micro fluidized fixed-bed reactor. Results showed that SO2 and Nox interacted with the adsorbent through chemical adsorption under atmospheric pressure and 200 °C. Under atmospheric pressure and 600 °C,12% of SO2 and 14% of Nox(based on the adsorbed amount) were released from unstable salts. The adsorption capability of the loaded adsorbent could be recovered under the conditions of atmospheric pressure,a reaction temperature of 600 °C and a reaction time of not less than 20 min. Under atmospheric pressure,the temperatures of complete conversion of SO2 and NO in gas phase were less than 500 °C when the excesses of hydrogen were 3 and 8 times over the stoichiomet-ric ratio to SO2 and NO,respectively.
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