Falling Film Evaporator - How Many Stages

HI,

I was wondering how to estimate how many stages of the falling film evaporator I need?
Where should I look to find the answer for which data or value?

I am using in the process waste steam.

Thank you for help.
Tomasz

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Hi ,

A few documents and link to support your work :

 

https://nzifst.org.n...evaporation.htm

 

Figures are available in the link above ( steam consumption / water evaporated ) vs number of effects . 

 

To me MVR should be investigated for this type of process .

 

Hope this is helping you.

Breizh 

Enable GingerHi Breizh,

Thank you very much for help. These materials will be usefull.

Best regards,

Tomasz

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Enable GingerHi Administartor,

Could you explain more precisely how to determine the number of stages for multiple installation of evaporators. Maybe we can use an example.

I have stcickwater flow of 4800kg/hr and I would like to evaporate 3200kg/hr .
I have residueal vapour of 1800kg/hr which will go to the evaporator.

How many stages should I use? I, II or III?

Thank you

 

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