Thermochemical treatment breaks large polymers into smaller
hydrocarbons of various carbon numbers and boiling points in an
inert, air-free, or controlled environment at elevated temperature
[9]. The hydrocarbons between the boiling points of 35 and 185 °C
can be used as motor gasoline, between 185 and 290 °C as diesel
#1, between 290 and 350 °C as diesel #2, between 350 and 538 °C
as vacuum gas oil, and 4538 °C as the residue. These fractions
can be obtained in different proportions by the appropriate
choice of thermal treatment/degradation temperature, type
of plastics, degradation time, and catalyst type