Distillation recovery of ethylene glycol from used coolants by large-scale vacuum distillation methods

摘要

There are several methods for recycling used coolants. In this paper, as to distillation, one of typical large-scale recycling methods, its technical possibilities and cost performance are being studied to improve processing efficiency and to establish methods of processing in large quantities. There are a lot of problems for recycling Ethylene Glycol (EG) of high purity. Therefore it's important to cope with improvements of the following matters, i.e. efficient recovery of calorie and cost reducing.