含氮类络合剂对水-醋酸气液平衡的影响

Influence of Nitrogen Containing Complexing Agents on the Vapor-Liquid Equilibrium of Water-Acetic Acid Systems

研究了含氮类络合剂对水 -醋酸体系气液平衡的影响。常压下气液平衡的实验结果表明 ,加入络合分离剂能够有效地提高水对醋酸的相对挥发度 ,体系在较难分离点的相对挥发度最高达到 4 75 ,是原来的 3 1 2倍。所加的最优络合剂是N 甲基乙酰胺。

Experiments of vapor-liquid equilibrium at normal atmosphere showed that the relative volatilities of water to acetic acid were efficiently raised by adding nitrogen containing complexing agents,of which the highest value reached 4 75,3 12 times the original value. N methylacetamide is the best complexing agent added.The mechanism is related to the complexing action between the added agents and acetic acid.