MULTIPLE EFFECT EVAPORATOR DESIGN
Glycerol solution is to be concentrated from 5 wt% to a final concentration of 75 wt%. The feed is
available at mass flow rate of 1000×N (in kg h-1) and 25°C, where N is your Group Number in this
course. Steam is supplied at 103.66 kPa (abs) to the first effect and a vacuum of 100 (abs) mm of Hg
is maintained in the last effect. You need to find the optimum number of stages for Forward Feed
System, and design the Calandria type evaporator for this service. Tabulate following information,
and show a hand-drawn sketch of evaporator vessel with important dimensions.
Following details to be furnished for each evaporator
Name of Equipment
Type
Function
Number of Units
1 unit
Evaporation Capacity
in kg/ hr
Operation
Continuous
Materials Handled
Aqueous solution of Glycerol
Recirculation type
Natural convection
BASIC DESIGN DATA
Pressure
Temperature Range
℃ - ℃
Density
kg/m3
Heat Transfer Area
m2
Materials of Construction
Fluid Handled
(Shell / Tube)
Mass Flow Rate
(Shell / Tube)
Temperature
(Shell / Tube)
Pressure
(Shell / Tube)
No. of Tubes
Length
Outside Diameter
Inside Diameter
BWG/Sch No.
Pitch
Downcomer Diameter, Calandria Tube Sheet thickness
Vessel dimensions (ID, OD, Shell thickness, Head thickness, other dimensions of the vessel) with
attached schematic drawing
Vapour-Liquid Separation Requirement at outlet
Insulation Material, Insulation thickness