Feasibility of Batch Reactive Distillation with Equilibrium-Limited Consecutive Reactions in Rectifier, Stripper, or Middle-Vessel Column

Table 6

VLE singularities in the system of MeOH, EtOH, DMC, MEC, and DEC.

System	Composition (mole fractions)	Temperature (°C)	Type of singularity*
DMC-MeOH	(0.123; 0.877)	63.7	UN
MeOH	1	64.5	S
DMC-EtOH	(0.31; 0.69)	74.9	S
MEC-EtOH	(0.05; 0.95)	78.3	S
EtOH	1	78.5	S
DMC	1	90.0	S
MEC	1	109.2	S
DEC	1	126.0	SN

*SN: stable node; UN: unstable node; S: saddle.