Page 95 - Distillation theory

P1: JPJ/FFX P2: FCH/FFX QC: VINOD/IYP T1: FCH
0521820928c03 CB644-Petlyuk-v1 June 11, 2004 20:12

3.5 Feasible Splits at R =∞ and N =∞ 69

Table 3.2. Azeotropes for wood pyrolysis product

Component Composition of
◦
Azeotrope no. Boiling point ( C) azeotrope (mass. %)
Acetone 23 55.4 64.7
Methyl acetate 35.3
Acetone 24 55.5 88.0
Methanol 12.0
Methyl acetate 34 53.5 81.3
Methanol 18.7
Methyl acetate 36 56.6 97.0
Ethanol 3.0
Methyl acetate 38 55.6 90.4
Water 9.6
Methanol 45 62.3 55.0
Ethyl acetate 45.0
Methanol 47 64.3 30.0
MEK 70.0
Ethyl acetate 56 71.8 69.1
Ethanol 30.9
Ethyl acetate 57 76.5 78.0
MEK 22.0
Ethyl acetate 58 70.4 91.5
Water 8.5
Ethanol 67 74.3 60.6
MEK 39.4
Ethanol 68 78.1 95.6
Water 4.4
Ethanol 69 78.2 91.2
Diethyl ketone 8.8
MEK 78 73.4 89.0
Water 11.0
Water 89 82.9 86.0
Diethyl ketone 14.0
Acetone 234 53.3 5.8
Methyl acetate 76.8
Methanol 17.4
Ethyl acetate 568 70.3 83.2
Ethanol 9.0
Water 7.8
Ethanol 689 77.4 71.7
Water 9.1
Diethyl ketone 19.2

In the case of direct split, acetaldehyde is being isolated as top product, and at
indirect split, water is being isolated as bottom product. Among eight splits, only
the first one is a sharp split without distributed components.
Splits with one distributed component shown below in brackets are the third
one (component 3), the fourth one (component 8), the sixth one (component 8),
the seventh one (component 8), and the eighth one (component 8).