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有相对挥发度为2的理想溶液，用板式精馏塔分离。溜出液流量为100mol／h，回流比R=2，测得进入第n板的气液相组成分别为yn+1=0．8、xn-1=0．82，若塔板以气相组成表示的单板效率Emv=0．5，试计算离开第n板的气液两相组成。

A.8、xn-1=0．82，若塔板以气相组成表示的单板效率Emv=0．5，试计算离开第n板的气液两相组成。


【参考答案】

xn=0．773；yn=0．834
xn=0．773；yn=0．834
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