Polyurethane foaming machineThere are two methods for the pyrolysis of soft polyurethane foam.

One method is cracking in an inert gas atmosphere or oxidation atmosphere at a high temperature of 250-1200℃ to produce a mixture of gas and liquid. For example, the soft foam waste is cracked at 250-300℃. The product is isocyanate and polyols of basically equal amount, which are cracked at 700-800℃. The product is pyrolysis gas, oil and coke