提出1种分块物料分配图以表达多原料非清晰精馏过程,在此基础上提出1种多原料非清晰精馏序列的合成方法.合成过程中,用经验法决定分离顺序,各物流量及相关操作以分块物料分配图表示.通过对只带旁路和清晰分离塔的多原料非清晰精馏序列合成示例的处理,说明了本文方法的具体应用. A kind of partitioned material distribution chart is proposed to express the non-sharp distillation process of multiple raw materials. On this basis, a synthesis method of non-sharp distillation sequence of multiple raw materials is proposed. In the synthesis process, the separation sequence is determined by empirical method, And related operations are shown in the block material allocation diagram.The specific application of the method in this paper is illustrated by the example of synthesis example of non-sharp distillation sequence of multiple raw materials with bypass and clear separation column only.