循环洗油中苯、甲苯含量的测定是炼焦煤气回收工艺中指导、控制操作上必不可少的项目之一。关于循环洗油中苯、甲苯含量的测定,最早是用恩氏精密蒸馏法。目前国内许多焦化厂仍采用古老的蒸馏法,有的单 Determination of benzene and toluene in the cycle wash oil is one of the essential items in the operation and control of the coking gas recovery process. On the cycle wash oil benzene, toluene content determination, the earliest is to use Enner’s precision distillation. At present, many domestic coking plants still use the ancient distillation method, and some single