Modelling pyrolysis process for PP and HDPE inside thermogravimetric analyzer coupled with differential scanning calorimeter

Plastic pyrolysis is widely studied and implemented at lab-scale but rarely modelled numerically. For the sake of designing efficient industrial reactors, modelling plastic process particle scale could be a prerequisite. Therefore, aim this work to model whole process, on scale, for polypropylene (PP) high density polyethylene (HDPE) inside thermogravimetric analyzer coupled with differential scanning calorimeter (TGA-DSC). First, kinetic triplet PP HDPE pyrolysis, heating rates 4-10°C/min, are determined according isoconversional methods. Secondly, triplets used along appropriate conditions simulate in TG analyzer, using finite element method. The melting sub-process modified apparent heat capacity method, which resulted relative error below 10% between simulated measured flow. Furthermore, cracking describes perfectly cracking, where average among all calculated experimental conversions didn't exceed 5%. flow TGA-DSC crucible was reduced less than 8% by dividing phenomena into “latent” an process.