废聚脂解聚新方法基础研究

A new depolymerizing waste PET method is adopted ,in the condition of uniting ethandiol and Luis alkali,making the PET be depolymerized quickly and completely to be TPA and EG within 40 minutes ,at 180℃ and on normal atmosphere pressure with common chemical engineering equipments. The depolymerization rate exceeds 99% and recovery rates reach 97%(TPA) and 95%(EG) respectively. Purification of EG is conducted only through distillation. But for TPA, all inpurity can be naturally separated during the posterior process. Among the whole processes, only depolymerizing PET is the pivotal chemical step, and the others ,such as the separating and purification of final products, can be consider as simply physical processes. Therefore this method is more simple and reliable,with lower cost and less investment. Waste PET can be reutilized in a small way or on a large scale . It provide a new way suitable for the situation of our country , to solve the problems of white pollution caused by waste PET and saving petroleum resources.

本研究论证了醇碱联合解聚废PET方法的可行性与合理性。拟提出一种简便易行的催化分解椒敖饩鄄锏姆掷爰际酰⒀芯靠刂铺逑蹈斗从Φ姆椒ǎ敝贫撕畏纤幕赜么矸桨福拐龉ひ赵诔９嫔璞钢锌焖佟⒊沟住⑽薹匣饩鄯螾ET，生产合成PET的初始物料。本技术对节约资源、区域性治理废PET具有重要的环境与经济意义。...