Treatment and Recovery as Resources of Chlorine-containing Organic Waste II. PVC Pyrolysis Dechlorination by Using Thermogravimetric Technique

The weight loss curves of PVC pyrolysis process and the elemental analysis of product were investigated by using thermogravimetric technique. The results show that the PVC pyrolysis is a two step process. The first step, the main dechlorination process accompanied with polymerization, is a first order reaction, activation energy of which is 130kJ/mol. The second step is the further cracking process of the residue which produces the low molecular hydrocarbon species mixture. TG curves obtained under different heating rate are similar and drift rightwards as a whole with the increasing of heating rate.