I have used a Pace brand hot air rework station when I worked as a hardware technician back in the '80s. Its purpose is to solder multi-pin SMD components while using solder paste. I suppose you could also ltry to unsolder small SMD components like caps or resistors, but it is not very quick or effective.
I actually own a Pace rework station which includes a hot jet nozzle, but I very rarely used for my electronic rework.
Here is a newer version of the one I own.
