3 replies to this topic

[Board operator]

I have a question about MDEA regenerator. Is there a way of knowing how much reflux you should be producing in regenerator? and what the reflux flow rate should be? Also what's the purpose of a higher MDEA weight percent?

[Pilesar]

Distillation columns need enough reflux to meet separation specifications. So the reflux flow rate should be 'enough'. Water requires energy to boil. Where boiling water can be avoided, energy can be saved.

[Nikolay_]

Hi, you can find Btu/ft3*h lean amine in literature and conert it to Lb or kg/h steam. It is approximately equal vapor flow from top of column/reflux.

[shvet1]

Also what's the purpose of a higher MDEA weight percent?

 

Higher amine fraction => more H2S transfered => higher performance of treatment system

Higher amine fraction => higher temperature in reboiler => higher amine degradation rate

 

update

https://read.nxtbook...oda_ineos_.html

Edited by shvet1, 17 June 2024 - 08:21 AM.