4。2加料方法·························6

4。3进料的时机························6

4。4塔顶的冷凝方法······················6

4。5回流方式·························6

4。6操作压力·························7

4。7进料状态·························7

5。 浮阀塔的设计························7

5。1全塔物料衡算·······················7

  5。1。1原料液、蒸馏出来的液体和残留的液体的摩尔分数和平均摩尔质量的计算·····························7

  5。1。2物料衡算·······················7

  5。1。3温度计算与确定····················8

5。2平均相对挥发度的计算···················9

5。3密度计算·························10

5。4粘度···························11

5。5表面张力计算·······················12

    5。6相对挥发度的计算·····················13

    5。7塔板数的计算(不包括再沸器)···············14

5。7。1实际塔板数的计算····················15

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