Dear Dhaval, sorry, but the indicated link doesn’t work. Anyway: how many stages (effects) have you intended to applicate? Which is the possible Delta T between each stage? You mentioned a boiling point at the last stage near 0°C. Yes, this is possible, but: 1) How much energy is needed for this purpose? A lot! 2) At this (low) boiling point, the steam volume is incredible very big and you will need a very large condensation surface. 3) To reach this very low vacuum you will need a cascade of different vacuum pumps and one of these must work with oil. it means that a well-functioning distillate trap should be implemented, if not, you have to regenerate very often the special oil. 4) Please, don’t forget the energy (electricity?) needed for the vacuum-skid. 5) What kind of medium do you intend to use for the last stage? Please remember that his must be colder than the steam itself (that is near the freezing point!)   That’s why a mass & energy balance must be calculated first!   There is a lot of remaining questions that must be cleared but if you can supply me first some information for these 5 points, it will be possible for me to understand your aim and intentions better. Thank you.   Best regards  Duilio

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Dear Dhaval,

sorry, but the indicated link doesn’t work.

Anyway: how many stages (effects) have you intended to applicate?

Which is the possible Delta T between each stage?

You mentioned a boiling point at the last stage near 0°C. Yes, this is possible, but:

1) How much energy is needed for this purpose? A lot!

2) At this (low) boiling point, the steam volume is incredible very big and you will need a very large condensation surface.

3) To reach this very low vacuum you will need a cascade of different vacuum pumps and one of these must work with oil. it means that a well-functioning distillate trap should be implemented, if not, you have to regenerate very often the special oil.

4) Please, don’t forget the energy (electricity?) needed for the vacuum-skid.

5) What kind of medium do you intend to use for the last stage? Please remember that his must be colder than the steam itself (that is near the freezing point!)

 

That’s why a mass & energy balance must be calculated first!

 

There is a lot of remaining questions that must be cleared but if you can supply me first some information for these 5 points, it will be possible for me to understand your aim and intentions better. Thank you.

 

Best regards 

Duilio