gas sweetening rules of thumbs
gas sweetening rules of thumbs
(OP)
I am going to simulate a gas sweetening unit which utilizes DEA and MDEA as solvent.
I am looking for some shortcut and rules of thumbs methods for specifying key parameters such as number of trays for absorber and regenerator columns,reboiler duty,circulation rate,...
please let me know if you can help me
I am looking for some shortcut and rules of thumbs methods for specifying key parameters such as number of trays for absorber and regenerator columns,reboiler duty,circulation rate,...
please let me know if you can help me





RE: gas sweetening rules of thumbs
RE: gas sweetening rules of thumbs
Also, depending on the simulation package you're using, simulating a perfectly clean amine may produce increased lean acid gas loadings or energy requirements to achieve lean/treated gas specification. Spiking your amine with a little bit of phosphoric acid can help to account for the impacts of impurities like heat stable amine salts on the acid gas/amine equilibrium in the bottom of the regenerator.
Homework, or a real case study?
Good luck,
Jason
RE: gas sweetening rules of thumbs
Rich loading and the corresponding amine circ rate is a function of pressure, contactor temperature profiles, tray characteristics like residence time and froth height, as well as multiple other factors. You have to realize that rules of thumb can potentially throw you off track especially in cases where the spec might be tight or where you are expected to back up the numbers with real engineering. Be careful. 1 lb of steam per gallon isn't always enough.
RE: gas sweetening rules of thumbs
Yep, there are lots of other rules of thumb to get you going.
If you are going to be doing CO2 slipping using an activated MDEA, better have the vendor do the runs in order to get a process guarantee.
RE: gas sweetening rules of thumbs
RE: gas sweetening rules of thumbs
RE: gas sweetening rules of thumbs
An Evaluation of General "Rules of Thumb" in Amine Sweetening Unit Design and Operation
RE: gas sweetening rules of thumbs