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3

Distillation


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#1 selvamvasudevan

selvamvasudevan

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Posted 25 March 2021 - 12:56 PM

Feed is superheated and temperatures in enriching section is normal (sometime little bit high) but in stripping section temperature is going low. Product (liquid) draw is from side stream. This causes the carryover of low key to next tower. Suggest some actions.

#2 FRBChemE

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Posted 25 March 2021 - 04:46 PM

Have you tried modeling the distillation column with ChemSep?

Questions:  Is there a reboiler on the column?

does the side stream draw originate in the enriching or stripping secttion?  How many real trays or height of Packing?



#3 selvamvasudevan

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Posted 27 March 2021 - 10:51 PM

Modelling not tried.
Reboiler is there.
Side stream draw from enriching section.
102 trays

#4 horatorres

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Posted 03 April 2021 - 09:17 PM

Good Night

 

Some check you should perform

 

- column pressure drop

- Flooding signs en the nerby low temperatura trays

- Heat input in the reboiler, look the % of valve opening compare with normal operation

- Pressure damping into the top pressure meaurament

 

Look  and best regards

 

A process data   flow , feed composition, espected ans actual size product composition, plate sieze tray or valve tray, pressure and drawing colud be ussefull to help you

 

 

Horacio



#5 Kimron

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Posted 15 April 2021 - 01:19 PM

Check Bottom holdup and boil up.




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