Crude Distillation column with two stage cooling system
Crude Distillation column with two stage cooling system
(OP)
Greetings,
In a Crude column overhead section with two stage cooling system i.e. First stage operated hot and dry with condensed Hydrocarbon refluxed back to the column. In second cold stage water + hydrocarbon is condensed. In such system which location is ideal for Neutralizing Amine Injection to avoid corrosion??
In a Crude column overhead section with two stage cooling system i.e. First stage operated hot and dry with condensed Hydrocarbon refluxed back to the column. In second cold stage water + hydrocarbon is condensed. In such system which location is ideal for Neutralizing Amine Injection to avoid corrosion??





RE: Crude Distillation column with two stage cooling system
Nathan Brink
RE: Crude Distillation column with two stage cooling system
I agree that though first stage is called Dry & Hot, there is a always presence of smaller quantity of water due to shock condensation... Even then will you prefer inject amine in the first stage??
RE: Crude Distillation column with two stage cooling system
The two stage overhead was a really great sounding idea that never really panned out.
Solution tends to either be:
~ Run so hot that you DON'T condense water or drop amine salts in the first stage and inject neutralizer after the first stage accumulator
Or:
~ Inject neutralizer before the first stage and redesign to force the dewpoint well within the first stage (perhaps with a very large water injection before), and size the accumulator appropriately to get good separation. Forget all about the energy benefit to a hotter reflux.
Nathan Brink
RE: Crude Distillation column with two stage cooling system
good luck
luis