摘要
通过对蒸馏塔设备投资费用及操作费用的分析、讨论，得出当这些费用最低时的适宜回流比Ropt是最小回流比Rmin的（1．1～2）倍．
A good conclusion that the reflow ratio Ropt to Rmin is 1. 1 ~2 on condition of minimumcost of distilling eguipment and operation is obtained by analysing and discussing the cost ofthose.
