Aspen is incredibly expensive and to my knowledge, there’s no way to get access to it outside of their licensing system (e.g. pirating). When I was in school, you had to go to the computer labs to use Aspen software. There wasn’t a student version that we could download onto our own computers. Maybe things are different now.
https://www.reddit.com/r/ChemicalEngineering/comments/18x2rvs/aspen_plus/