Explain in detail evaporating still with its advantage and disadvantages.

Explain in detail evaporating still with its advantage and disadvantages.
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1 Answer

Answer :

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It consist of a hemispherical pan made from copper or stainless steel.

It is surrounded by a steam jacket.

Still is covered from top and connected to condenser.

Hemispherical shape provide large surface area for evaporation.

It consist of product outlet at bottom.

Advantages:

Simplest equipment.

Economical.

Easy to clean, use and maintain.

Condenser is provided to increase the speed of evaporation.

Vacuum can be attached.

Disadvantages:

Co-efficient of heat transfer is poor.

Heating surface is limited.

Not suitable for thermolabile material.


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