Sizing a CSTR for transesterification reaction

  • #1

Main Question or Discussion Point

Hi,

I need to size a CSTR for the transesterification of tri-glycerides into methyl esters (bio-diesel) by reaction with methanol and NaOH catalyst.

The transesterification reaction taken place in 3 reversible steps:
TG + CH3OH <--> DG + ME
DG + CH3OH <--> MG + ME
MG + CH3OH <--> C3H8O3 + ME

Where: TG = Triglyceride DG = Di-Glyceride MG = Monoglyceride ME = Methyl Esters

I have the reaction rate constants for each of the forward and reverse reactions, however, i'm stuck there.
I know how to size a multi-step CSTR or a reversible reaction CSTR but not a combination of the two.

Please help!
 

Answers and Replies

  • #2
19,919
4,095
Let's see your mass balance equations for all the species in the reactor
 

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