Effects on Vaccum System if Using Super Heated Steam

None whatsoever. The thing that affects the vacuum is the temperature, pressure, flowrate and composition of the stuff being distilled.

If in doubt, consult a competent Process Engineer.

Dear Mr.PWSlack,

There is a remarkable difference in Heat Transfer Rate i.e HEAT TRANSFER CO-EFFICIENT between Super Heated Steam and Dry Saturated Steam.

For Heat Transfer by Super heated Steam, first it has to shed its Degree of Super Heat and then transfer the Latent Heat. The Heat Transfer Co-Efficient is Low or Poor.

In the case of Dry/Saturated Steam the Heat Transfer of Latent Heat readily takes place and steam is condensed. The Heat Transfer Co-Efficient is High for this dry/saturated steam.

If it is vapour,(partly wet) the Heat Transfer Rate will be further improved as the Heat Transfer Co-Eff. is Highest.

Of course there are other so many factors involved for Heat Transfer as the Subject is very complex.

DHAYANANDHAN.S

What's "vaccum"? What's "celcius"? What's "dry stem"?

--Ed. C.

Dear Mr.dinesh bagal,

From your quiery, I presume, the Distillation takes place in a Heat Exchanger of NON CONTACT Type..

If you use Super Heated Steam, the Heat Transfer Rate will be affected - this is the first impact, you will need more Heating surface. If you use Dry/Saturated Steam the Heat Transfer will be very fast as the entire Latent Heat is transferred INSTANTLY.

Vaccuum - Pl. explain in detail. Generally Vaccuum means the Boiling Point will come down.

You have to provide more details - on working parameters.

DHAYANANDHAN.S

Dear Mr. dhayanandhan , Thank You!

yes vacuum means to come down boiling point,in distillation column . we stop dry saturated stem generated boiler instead of this use superheated boiler.

What effect on vacuum system?