Problem 11 Fill-in-the-Blank (10 points)
A continuous rectifying column handles a mixture consisting of 40 per cent of benzene by mass and
60 per cent of toluene at the rate of 4 kg/s, and separates it into a product containing 97 per cent of
benzene and a liquid containing 98 percent toluene. The feed is liquid at its boiling-point. In such an
operation the mass flow of distillate is (a) 2ptand the mass flow of waste liquor is(b) 2pt .
If a reflux ratio of 3.5 is employed, (c) 3pt plates are required in the rectifying part of the column.
Ifthe plate-efficiency is now requires 60 percent, then (d) 3pt actual number of plates are needed.
一、台中商店採實地盤存與先虛後實制(記虛轉實)試將下列107年3月份交易事項記入日記簿(每
一分錄2分,共20分)