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ChemJunction
CHEMJUNCTION • PROCESS DESIGN

Continuous Fractional Distillation

Methanol–water column design using NRTL or Wilson VLE, with wt% process inputs, reflux and vapour loads, feed-stage location, tray/packing selection and hydraulic flooding assessment.

ENGINEERING APPLICATION Methanol–Water Distillation

Continuous column • NRTL / Wilson • Tray / Packed

wt% inputkg/h loadsFlooding %
Continuous Distillation Column Design
kg/h
wt%
wt%
wt%
–
–
mmHg abs
% (tray mode)
m
m
for packed column
% (reference only)
Process inputs are entered in wt%. The VLE calculation internally converts composition to mole fraction. Pressure is absolute. Hydraulic results are preliminary and should be checked against vendor correlations for final tray/packing selection.
Continuous Distillation Process — Design Summary
Detailed Design Values
Stage / Feed Location
Heat Duties & Temperatures
VLE Curve
VLE Table
x MeOHy MeOHT (°C)
Column Hydraulic Load
Flooding % = actual superficial vapour velocity / calculated flooding velocity × 100. A final design should use the actual tray type or packing manufacturer's hydraulic correlation.
Selected Column Internals
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APPLICATION Distillation Design

Methanol • Water • VLE • Reflux • Stages • Hydraulics