Ayan_dg:
Amine Stripper-Reboiler combinations are employed in two ways:
- The stripper is mounted directly on top of the reboiler (in small plants);
- The stripper and reboiler are mounted on their own foundations and inter-connected with the required piping.
You fail to tell us which version you are designing. Therefore, I have to assume you mean the latter. This topic has been discussed and commented many, many times before in our forums and I am attaching a response I made 6 years ago in the form of a Process Flow Diagram. The best way for a professional engineer is to communicate with sketches or drawings. This is such a correct, accurate, and specific way of communicating process information and yet so many young engineers fail to use this practical and accurate tool. The only reason I can come up with is laziness. Please note the following on this PFD:
- The amine entering the reboiler originates in the stripper sump and enters the reboiler at the front end, preferably through a side nozzle that is elevated approximately 6 inches from the reboiler inner bottom surface. This is to allow positive, slow amine flow through the length of the reboiler steam bundle and leaves space at the reboiler bottom for the sludge and other solids that may form in the kettle. You must not allow this line to plug up and stop all flow to the reboiler.
- The lean amine exiting the reboiler does not go back to the sump as you state. It goes directly to the Amine heat exchangers.
I hope this clarifies your query and responds directly to it.
MEA - Acid Gas PFD.xlsx 44.69KB
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