Aspen Plus - DSTWU, DISTL and RADFRAC block (propylene/propane separation)

We attempt to separate propylene/propane mixture output of propyne hydrogenation unit to obtain polymer grade propylene and consumer grade propane. In the simulation we use three different distillation block which is DSTWU, DISTL and RADFRAC block and analyze differences in the stream results of each block
Links of the journal articles:
1. pubs.acs.org/d...
2. science.scienc...

[@ainunnasuha2172]

Dr, the three block just an option right?

[@MohamadReziAbdulHamid]

I general yes..but I prefer Radfrac because I can size the column and get all the dimension (e.g., diameter, tray distance, type of trays, weir height, etc.) and many other things..I use DSTWU first to get initial guess of the condition before i use radfrac..Hope this helps