Explain construction and working of “Evaporation Still”

Explain construction and working of “Evaporation Still”
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1 Answer

Answer :

Construction: 

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 the condenser.

Hemispherical shape provide large surface area for evaporation.

It consist of product outlet at bottom.


Diagram

image

Working: 

1) The dilute liquid is fed into the still and the cover is clamped

2) Steam is introduced in to the jacket

3) The liquid is evaporated and condensed into the condenser

4) The product is collected through product outlet.

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