Regarding the feed to the bottom of the ASPEN column, is it sufficient to feed it below the lowest tray?
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When we talk about feeding at the bottom of a steam column, does specifying a location in ASPEN refer to right below the lowest tray? Does the bottom of the stripping tower require no reboiler?
I’m also puzzled by this question; I hope experts can answer it!
That's how it is. A reboiler is sometimes needed at the bottom of the tower.
For example, if the total number of trays is 50 (including the condenser) and there are 50 trays at the bottom of the tower, then the stripping steam enters 51 trays above that stage. If a stripping tower uses stripping steam, then no reboiler is needed; sometimes, however, a stripping tower does not use stripping steam but instead relies on a reboiler, such as in a normal stripping column