Modeling Study on Effects of Liquid Propylene in Horizontally Stirred Gas‐Phase Reactors for Polypropylene

Modeling study was carried out for JPP-HORIZONE, which has horizontally stirred gas reactors in which the heat of polymerization is removed by vaporization of liquid propylene (LPP). The effects of LPP were estimated by the model which has a couple of continuous stirred bed reactors different in propylene form, gas of liquid, combined with a less stereospecific catalyst as a probe. LPP affects isotacticity further than catalyst efficiency in the developed model. Observed isotacticity was lower than that estimated by the model without LPP, which can be explained only by the presence of LPP.