填料塔中乙二胺/磷酸溶液吸收SO2的体积总传质系数Volumetric Overall Mass Transfer Coefficients of SO2 Absorption into Ethylene Diamine/Phosphoric Aid Solution in Packed Column
贾素改,邹海魁,初广文,陈建峰
摘要(Abstract):
SO2减排已经成为国际关注的焦点问题,近年来,湿法烟气脱硫技术以其脱硫效率高、适应范围广、技术成熟等优点,成为当今占主导地位的烟气脱硫方法。可再生胺法脱硫技术作为一种新的脱硫方法得到了普遍关注。为进一步的工业设计提供参考依据,今采用乙二胺/磷酸溶液为吸收剂,测定和计算了在填料塔中乙二胺/磷酸溶液吸收烟气中SO2的体积总传质系数KGa,并研究了液气比、乙二胺浓度、进口气体中初始SO2浓度、吸收液初始pH值及反应温度对KGa的影响。实验结果表明,KGa随液气比的增大、乙二胺浓度的升高、吸收液初始pH值的增大而增大;体积总传质系数随初始SO2浓度的升高、反应温度的升高而降低。
关键词(KeyWords): 二氧化硫;乙二胺;体积总传质系数;填料塔
基金项目(Foundation): 国家科技支撑计划项目课题(2008BAE65B01,2008BAE65B02);; 国家”863”项目课题(2012AA063104);; 国家重点基础研究发展计划(2009CB219903)
作者(Author): 贾素改,邹海魁,初广文,陈建峰
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