【摘要】 以不同吸附材料的吸附性能测试实验结果为依据,研究了水涤脱附条件下活性炭脱硫的机理,并以Zawadzki的反应机理为依据,对整个反应过程中的吸附反应空间进行了分析和估算.研究表明,在有水的情况下,只有当孔隙中具有一定的反应空间,使其能容纳反应系统的空间构型时,SO2才能发生氧化,从而产生有效的吸附位.因此,活性炭的孔径分布是决定吸附材料对SO2吸附性能的关键;孔宽为1nm时的吸附过程具有最大的孔隙利用率;峰值孔径超过1nm、颗粒直径为3mm的MHY30中孔型颗粒活性炭是一种理想的吸附材料.更多还原

【Abstract】 Mechanism of activated carbon desulfurization under the condition of desorption by water is investigated according to the results of adsorbing performance experiments with different adsorbents. Analysis and estimation of reaction space in the whole reaction process are offered on the basis of Zawadzki’s desulfurization theory. It is indicated that the effective adsorption sites germinate only in a certain reaction space where the appropriate distances and configurations among reactant molecules have been formed. Therefore, the distribution of aperture of adsorbent is a crucial factor in the adsorption process. The best utilization is gained when the aperture width approaches 1 nm. And a type of adsorbent MHY30 whose aperture amplitude over 1 nm and granule size about 3 mm is suggested to be adopted.更多还原