Method of recycling polyester fabric

A method of recycling a polyester fabric, comprising:

• providing a polyester fabric, wherein the polyester fabric comprises polyethylene terephthalate and dyes;
• performing an extraction process to remove the dyes from the polyester fabric, wherein the extraction process comprises using ethylene glycol as an extraction solvent, immersing the polyester fabric in the extraction solvent, and extracting under a temperature of 80° C. to 180° C.;
• performing a depolymerization process, wherein the depolymerization process comprises using a chemical depolymerization solution to depolymerize the polyester fabric treated with the extraction process to obtain a product comprising BHET (bis(2-hydroxyethyl terephthalate)), and the chemical depolymerization solution is ethylene glycol;
• performing a purification process to remove impurities of the product obtained by the depolymerization process and to obtain a purified BHET;
• and
• performing a solvent recycling process, wherein the solvent recycling process comprises collecting waste solutions of the extraction process and the depolymerization process, and recycling ethylene glycol in the waste solutions by a distillation separating system.