2 replies to this topic

[chyke7]

Hi colleagues, I will soon start my MSc thesis covering solubility of CO2 in a novel solvent (4-diethylamino-2-butanol) promoted by Piperazine. The sample feed gas will only be CO2 (no H2S) and N2. Please, can anyone assist me with an excel spreadsheet for calculating 'amine circulation rate', 'lean amine loading' etc. This will enable me estimate possible heat of regeneration required and corrosion rate.

Thanks

[RockDock]

It's very easy to come up with an initial amine flowrate based on stoichiometry and gas flow.

 

kmol/hr of CO2 / desired loading (molCO2/molamine) = kmol of amine/hr

 

Then you need to divide by the fraction of amine in solution to get your kmol/hr of solution.

 

Then convert to whatever units you need.

 

However, this is just the starting point. That assumes the reaction reaches equilibrium, which in most cases it does not. You will need ProMax to calculate how far from equilibrium the reaction actually proceeds to. I don't know if ProMax has the amine you have, but I suggest you contact BRE to find out. They pretty much have the top expertise on amine sweetening, which I suppose is why their simulator is the only one that can do calculations like this.

[chyke7]

Thanks a lot....Happy new month...