Pentane, hexane and heptane need to be separated and cooled to 25?C. Using pumps, heat exchangers and distilla?
Ricky has pretty well covered it. I would add a feed/bottoms exchanger for each column to capture some of the heat in the bottom products. You will probably need an additional cooler on the bottom products to bring them to a lower temperature for storage.
tion? OK, but what is the question.
A lot depends on the feed composition, pressure and temperature to decide the best way to do this separation. There are also no specifications but I'm going to assume distillation is what the question is assuming Typically, I've seen the first tower for this acting as a depentanizer. The pentane goes overhead and the hexane and heptane go out the bottom. The next tower would separate the hexane and heptane, hexane would go overhead, heptane would be the bottoms product. Each tower would have an overhead condenser and reboiler. you might need a feed pump to feed the first tower and each tower would need either overhead reflux pumps and product pumps which could be a single set of pumps or separate pumps, it really depends on the flows and where the products are going, is the head required for the two services such that a single pump can efficiently meet both requirements.
