从洗油中分离和精制苊的新工艺研究

STUDY ON A NEW PROCESS OF SEPARATING AND REFINING ACENAPHTHENE FROM GAS ABSORBER OIL

采用精馏和重结晶相结合的方法,研究了从洗油中分离和精制苊的新工艺.结果表明,单纯使用多次精馏的方法很难制得高纯度的苊,而通过精馏与重结晶相结合的方法可制得高纯度的苊;提出了从洗油中提取苊的精馏-重结晶工艺,该工艺具有能耗低、纯度高、收率高、工艺简单、溶剂可多次循环套用、无环境污染和成本低等优点.

Acenaphthene is an important chemically raw material which exists mainly in gas absorber oil distillation cut of coal tar. A new process of separating and pefining acenaphthene from gas absorber oil was investigated by reetification-recrystallization in the paper. The results show that it is very difficult to obtain acenaphthene with high purity from gas absorber oil only by rectification time after time, and yet acenaphthene with high purity can be obtained easily by means of the process of combining rectification with recrystallization, and that the process has many characteristics such as lower energy consumption, higher purity and yield, short process flow, mother liquor use for times, no pollution, lower cost and so on.