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A distillation column should separate benzene and toluene in a 30 t/h feed flow containing 40...

A distillation column should separate benzene and toluene in a 30 t/h feed flow containing 40 % benzene and 60 % toluene. The overhead product should be 97 % benzene and bottom product 98 % toluene. The molar reflux ratio RD = 3.5 and the saturated liquid feed has a boiling point of 95 °C. Calculate flow rates of distillate and bottom product . determine the number of ideal trays needed for the separation . Where is the feed tray located . How is the number of trays influenced, if the feed is 75 % vapour . How many real trays are needed, if the stripping section tray efficiency is 65 % and rectifying section tray efficiency is 75 %.

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