Disposal method for recyclate containing polyester

A disposal method for recyclate, comprising:

• providing recyclable containing polyester;
• performing a first depolymerization step, comprising mixing the recyclable and oligo-bis(2-hydroxyethyl) terephthalate (o-BHET) for reaction and extrusion depolymerization to at least obtain or produce poly-bis(2-hydroxyethyl) terephthalate (p-BHET);
• and
• performing a second depolymerization step, comprising mixing the p-BHET and a depolymerization solution for chemically depolymerization to at least obtain or produce monomer-bis(2-hydroxyethyl) terephthalate (m-BHET), wherein:
• the first depolymerization step further comprises mixing the recyclable, the o-BHET, and a catalyst;
• the first depolymerization step further comprises heating to 200° C. to 280° C.;
• the depolymerization solution comprises ethylene glycol, and a weight ratio of the ethylene glycol in a total weight of the mixture in the second depolymerization step is 30 wt % to 80 wt %;
• and
• the second depolymerization step further comprises heating to 190° C. to 240° C.