烟气水蒸汽含量对变温吸附烟气脱硫过程的影响  

Effect of Water Vapor Content in Flue Gas on Temperature Swing Adsorptive Flue Gas Desulphurization Process Using Activated Carbon

作　　者：高继贤[1] 王铁峰[1] 王光润[1] 王金福[1] 

机构地区：[1]清华大学化学工程系,绿色反应工程与工艺北京市重点实验室,北京100084

出　　处：《过程工程学报》2009年第1期18-22,共5页The Chinese Journal of Process Engineering

摘　　要：通过动态吸附实验,考察了水蒸汽含量对SO2在脱硫脱硝活性炭上变温吸附过程的影响,分析了其含量0～0.20(摩尔比或体积比,下同)条件下的吸附规律,并基于吸附模型对实验数据进行了讨论.对Bangham吸附模型进行改进以包含水蒸汽的影响,并应用该模型进行了预测,在不同水蒸汽含量时,模型的模拟值与实验值吻合较好.结果表明,在所研究的体系和条件范围内,烟气中的水蒸汽增大了脱硫率、SO2吸附量、平衡吸附量和吸附速率,其含量在0.07～0.10范围内效果较优,此时最大SO2平衡吸附量为73.00mg/g.The effect of water vapor content in flue gas on adsorption of SO2 using ZL50 activated carbon for flue gas desulphurization and denitrification processes by temperature swing adsorption technology was studied by dynamic adsorption experiments. The SO2 adsorption behaviors with water vapor in the flue gas were analyzed. The experimental results were discussed based on mathematical models. The factor of water vapor content was included into the modified Bangham model for predicting the adsorption capacity and adsorption rate of SOE, and a good agreement between the calculated and experimental data was obtained. The results indicate that the desulphurization rate, SO2 adsorption capacity, SO2 equilibrium adsorption capacity, and adsorption rate increase with the increase of water vapor content, with the maximum SO2 equilibrium adsorption capacity being 73.00 mg/g approximately within the water vapor content range of 0.07～0.10.

关 键 词：烟气脱硫 变温吸附 水蒸汽含量 活性炭 

分 类 号：X701.3[环境科学与工程—环境工程] X511