Technologies

Function

Conditions

Chemo-lysis

Depolymerizes plastic into its monomer through various depolymerization routes: methanolysis, glycolysis, hydrolysis, ammonolysis and hydrogenation.

Methanolysis:

Temperature: 180˚C - 280˚C.

Pressure: 20 - 40 atm.

Hydrolysis: the reaction of plastic with water under neutral, acidic or basic conditions at high temperature and pressure.

Glycolysis:

Temperature: 180˚C - 250˚C with excess of glycol.

Pyrolysis

Breaks down macrostructure of the polymer to form smaller molecules by depolymerization or random fragmentation. The pyrolysis products of plastic waste can be in the forms of gas, liquid and solid residue.

Temperature: 500˚C.

Pressure: 1 - 2 atm.

Fluid catalytic cracking

Converts plastic waste into fuel, commodity chemicals and fine chemicals through thermal and catalytic decomposition process.

Temperature: 300˚C - 350˚C.

Hydrogen technologies

Convert plastic waste into liquid fuel through hydrocracking reactions.

Temperature: 375˚C - 400˚C.

Pressure: 70 atm.

With the addition of hydrogen gas.

KDV process

Catalytic depolymerization: conversion of biomass and plastic waste into liquid fuels such as diesel oil.

Temperature: 250˚C - 320˚C.

Pressure: Atmospheric pressure.

Gasification

Converts plastic waste to a gaseous mixture containing CO₂, CO, H₂, CH₄ and other light hydrocarbons via partial oxidation. The gaseous mixture is known as syngas.

Temperature: 1200˚C - 1500˚C.

Pressure: 50 - 100 atm.

With oxygen and steam.