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Rectification - the number of theoretical trays in a distillation column

Product No: P3031501

Principle

The separation power of a rectification (fractionating) column can be determined using an appropriate binary mixture whose equilibrium composition is measured in the distillation flask and in the domed glass head of the distillation apparatus. The number of theoretical trays can be numerically or graphically obtained from the measured values.

Tasks

Prepare 10 mixtures of methyl cyclohexane and n-heptane with substance ratios (mole fractions) from 0 to 1 and with step width of approximately 0.1. To record a calibration curve, determine the refractive indices of the mixtures and plot them against the mole fractions.
Distill a mixture of methyl cyclohexane and n-heptane in a rectification column with total reflux until an equilibrium has been established. Determine the composition of the condensate and the number of theoretical trays in the column for a thoughput of 500 and 1000 ml/h.

What you can learn about

Bubble tray column
Rectification
Raoult's law
Henry's / Dalton's law
Boiling-point diagram
Reflux ratio

Materiallist (Excerpt)	Product	Amount
Set rectification plant, 230 V	35918-88	1
Set of Precision Balance Sartorius CPA 623S and measure software, 230 V	49224-88	1
Abbe refractometer	35912-00	1
Data acquisitation set for set rectification plant, 230 V	35918-50	1
Immersion thermostat Alpha A, 230 V	08493-93	1
Bath for thermostat, Makrolon	08487-02	1
Stop clock,demo.;diam. 13 cm	03075-00	1
Methylcyclohexane 1 l	31566-70	3
External circulation set for thermostat Alpha A	08493-02	1
HEPTANE, NORMAL 1000 ML	31366-70	1
Funnel, glass, top dia.150 mm	34461-00	1
Graduated cylinder 1000 ml	36632-00	1
Water, distilled 5 l	31246-81	2
Boiling beads, 200 g	36937-20	1
Pasteur pipettes, 250 pcs	36590-00	1
Snap-cap vials,d=30mm,h=50mm,10p.	33624-03	2
Rubber caps, 10 pcs	39275-03	1
Rubber tubing, i.d. 6 mm	39282-00	4
Laboratory Experiments Physics, Chemistry, Biology andApplied Sciences, CD-ROM, incl. operating manuals	16502-42	1