Nitric acid absorber tower have cooling coils at every stage. How can i add cooling coils in the aspen model for 59 stages ? The degree of cooling will determine the acid strength.
you can take out a side outlet liquid stream from a plate and circulate the liquid with a fairly high circulation rate compared to the through flow around a heat exchanger coil with specified area, overall heat transfer coefficient and coolant flow rate and inlet temperature and feed back the liquid stream to the same plate