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Destillation Early Stopping


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#1 isadaglar

isadaglar

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Posted 12 September 2020 - 12:38 PM

Hi every one, i am production engineer we produce melamine resin with batch process. Last two production we can't destillation all of distillate. Destillation is start at 100 C with vacum and temperature decrasing 50 C and distillation is stop. what can i do?



#2 Bobby Strain

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Posted 12 September 2020 - 01:08 PM

You can restart the operation.

 

Bobby



#3 breizh

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Posted 12 September 2020 - 06:40 PM

hi,

any change in the composition of material due to internal leaks ? Is it atmospheric or vacuum distillation?...

Too little information to support .

 

A better description of your process including operation conditions and may be sketch are needed . 

 

 

Good luck

Breizh



#4 isadaglar

isadaglar

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Posted 14 September 2020 - 12:33 AM

Vacuum distillation ofcourse viscosity increasing with distillation 

hi,

any change in the composition of material due to internal leaks ? Is it atmospheric or vacuum distillation?...

Too little information to support .

 

A better description of your process including operation conditions and may be sketch are needed . 

 

 

Good luck

Breizh



#5 breizh

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Posted 14 September 2020 - 01:01 AM

Hi ,

OK vacuum distillation , what else ? I did not pay attention to your initial memo, sorry about that.

 

type of vacuum pump ? Can you share any pressure profiles/temperature profiles

at Normal condition vs upset  (top & bottom)? 

how do you manage the heat on your column/ reactor? 

how do you control the boiling point in the sink ?

how do you control the pressure top column /condensor? 

How long does it take to have a drop of temperature ? 

What operators are doing in such case ? 

how far is the end result  compared to normal operation in term of quality? 

BTW : no change in the recipe ? same raw mat , same quantity ? 

 

Submit a PID or PFD for our members to comment . 

Without document nothing will happen. 

Good luck

Breizh 


Edited by breizh, 14 September 2020 - 01:28 AM.





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