|Single Effect Evaporator :
Single Effect Evaporator
Evaporation deals with
the concentration of a non-volatile solute from a solution by the
removal (If requited amount of volatile solvent. Usually the solvent is
water. By vaporizing part of the solvent, useful product. i.e. the
concentrated solution or thick liquor is produced and the vapour is
discarded. Long tube evaporators are usually used for the concentration
of foamy liquids. The set-up consists of stainless steel tubes
surrounded by a stainless steel jacket and fitted with accumulator.
Dilute solution is feed to tubes. Steam from a steam generator is
supplied to shell to concentrate the dilute feed solution to a desired
level. The jacket is fitted with a steam trap and the condensate is
collected at the end of trap. The vapours of volatile solvent are
condensed in a shell & tube type condenser and the balance
nonvolatile solute collected in the accumulator is recycled through the
To concentrate a solution and to evaluate the following at steady state:
- Material and Heat Balance
- Economy and the capacity of the evaporator
- Overall heat transfer co-efficient.
- Water supply 5 lit/min (approx.) and Drain
- Electricity Supply: I Phase, 220 V AC, 4 kW.
- Required Chemicals.