Both plastics and petroleum derived fuels are hydrocarbons that contain the elements of carbon and hydrogen. The difference between them is that plastic molecules have longer carbon chains than those in LPG, petrol, and diesel fuels. Therefore, it is possible to convert waste plastic into fuels.

The process is a thermal selective splitting reaction of the large molecular weight polymer carbon chains under an oxygen free environment and produces small molecular weight molecules.

In the commercial plant, the plastics are fed into a reactor along with the catalyst and the mixture is heated to 375 degrees Celsius in the absence of air. This results in the generation of petroleum products in a gaseous form. The gaseous output is then passed through a condenser. The liquid components of the output are collected in a liquid collection chamber and the non-condensable gases are collected in a gas collection chamber.