Heptane recovery vs ethanol recovery

We have a release valve on the vessel that allows us to adjust vaccum depth, we’re not just pulling as hard as possible.

We’re using a boiler to heat it, it is set at 25 psi, I’d have to look tomorrow but steam pipe right before vessel usually reads right around 90c when it’s running.

now I’m totally lost.

25 PSI steam is like 225oC according to the all knowing one…exit at 90oC seems like it would make sense.