A kind of regeneration method of polyester reclaiming material

The present invention relates to a kind of regeneration methods of polyester reclaiming material, polyester reclaiming material and polyester oligomer melt are subjected to reactive melt blending first and obtain preliminary depolymerization melt, then preliminary depolymerization melt mixes progress alcoholysis reaction with ethylene glycol and obtains depth depolymerization melt, depth depolymerization melt carries out the removing of TVOC and the reparation of cracking functional group in vertical reactor after filtering, obtain the low TVOC content polyester oligomer melt of TVOC content < 20ppm, low TVOC content polyester oligomer melt carries out polycondensation reaction and obtains low TVOC content recycled polyester melt, last low TVOC content recycled polyester melt enters melt cooling granulation system and recycled polyester slice is made.Method overall flow length of the invention and technique controlling difficulty are moderate, have high efficiency, the content of TVOC and nonyl phenol and its isomer are lower in final recycled polyester slice obtained.