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OALib Journal期刊
ISSN: 2333-9721
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n？甲基二乙醇胺水溶液脱除so2热力学分析
, PP. 46-50
Keywords: mdea,脱硫,基团加和法,热力学,解吸
Abstract:
通过n-甲基二乙醇胺(mdea)吸收so2实验，以及应用热力学方法根据mdea吸收co2的热力学数据估算mdea吸收so2的焓变，采用基团加和法计算反应熵变，进而得到mdea吸收so2的吉布斯自用能变和反应平衡常数，并与石灰石-石膏湿法吸收so2的吉布斯自用能变与反应平衡常数进行比较，结果表明：利用mdea脱除so2是可行的；低温条件下mdea吸收so2比石灰石-石膏湿法的反应自发程度更大，更容易进行，且能耗较低；采用mdea脱硫可节约吸收剂使用量，且副产物价值更高，具有良好的发展前景。
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