A fraction containing primarily cyclohexene primarily cyclohexene and water is separated from raw cyclohexanone in Cyclohexene column. Raw Cyclohexanone is fed from storage tank to Cyclohexene Column via Cyclohexene heater.
In Cyclohexene Heater, the feed is heated up to about 1200C with the heat carried by the bottom product from Alcohols column. The Cyclohexene column is operated at atmospheric pressure and temperatures of 850C at top and 1650C at bottom. The vapours from Cyclohexene column, containing mainly Cyclohexene and water, are condensed in Cyclohexene condenser and Cyclohexene Cooler which are connected in series.
1.7 bar nitrogen is continuously directed to the vent of Cyclohexene Cooler. After separation the water layer is drained off to waste water vessel and the organic layer is pumped by reflux pump to the top of Cyclohexene column and rest as distillate to benzene hydrogenation section. Cyclohexene evaporator is fed with 20 bar steam. The bottom product from cyclohexene column is pumped by cyclohexanone pump as feed to Alcohols column. The Project Report On Cyclohexanone
Alcohols and cyclohexanone distillation …show more content…
This column is fed with the anhydrous cyclohexanone/cyclohexanol mixture coming from the cyclohexane oxidation section. The bottom product of the Cyclohexene column with sodium hydroxide is also entered in this column. Feed is heated in feed heater, in this heater the anhydrous mixture is heated up to a temperature of 1400C with the heat carried by the bottom product arriving from Alcohols column .Column is operated under atmospheric pressure at temperatures of 1320C at the top and 1600C at the