In order to better dispose the main typical components(polyvinyl chloride(PVC) and polystyrene(PS)) of waste plastics

co-pyrolysis of them with enteromorpha prolifra in nitrogen atmosphere was performed. The results show that

increasing the heating rate made the main pyrolysis temperature range move toward the high temperature zone

and the pyrolysis speed turned larger. With the increase of mass fraction of the enteromorpha prolifra

the main co-pyrolysis temperature interval of the PVC and enteromorpha prolifra moved toward the low temperature zone

while that of the PS and enteromorpha prolifra moved toward the high temperature zone. The PVC and enteromorpha prolifra co-pyrolysis had a good synergistic effect

when the mass fraction of PVC was 75%

the relative value can reach 34.5%. The PS and enteromorpha prolifra co-pyrolysis had a certain inhibitory effect

when the mass fraction of PS was 50%

the relative value can reach 28%. The kinetics analysis shows that

the first-order kinetic model can well describe the co-pyrolysis process of the two

and there is a dynamic compensation effect.