【摘要】 以煤气化副产物粗酚为研究对象,设计了三塔连续减压精馏工艺,并利用Aspen Plus软件对整个分离过程进行了模拟计算。通过选择物性方法和组分的简化、DSTWU模块的简捷设计和RadFrac模块的严格计算,然后应用模型分析工具优化得到了粗酚系统连续减压精馏的工艺参数。若各塔轻关键组分的回收率设为98%,在一定的进料条件下,塔1、塔2、塔3的理论塔板数分别为51、28、24;最佳进料位置分别在22、14、14块板;塔顶产品与进料的质量流率之比(D/F)分别为0.293 3、0.1912、0.647 6。得到苯酚、邻甲酚和间甲酚产品的质量分数分别为99.6%、90%和83.1%。更多还原

【Abstract】 A basic simulation separation of coal gasification byproducts,crude phenols,with three columns is presented by using Aspen Plus. Parameters of continuous vacuum distillation process are obtained by choosing appropriate property method,simplifying the components,simulating with DSTWU and RadFrac model,and combining with model analysis tools. The results of separation simulation show that,if the light key component recovery for the three columns are all 98%,the mass purity of phenol,o-cresol,m-creso can reach 99. 6%,90% and 83. 1%,respectively,under the following conditions: 51,28 and 24 of the theoretical plates numbers,,2,14 and 14 of the optimum feed plate number, and 0. 293 3,0. 191 2 and 0. 647 6 of distillate to feed fraction ratio for each column,respectively.更多还原