Abstract:

A complete equilibrium stage model was developed for methyl tert-butyl ether （MTBE）synthesis by suspension catalytic distillation (SCD).The influence of the characteristic parameters for SCD, especially solid/liquid separator ratio φand bottom flow rate B, upon column performance was investigated by a rigorous bifurcation study.Bifurcation analysis results showed that superior column performance could be achieved under practical operation conditions because the upper bound of the multiplicity range for the solid/liquid separation ratio was very small.The parameter plane of input variables φ and B was divided into three sub-fields by limitation point curves, and the top right one was the acceptable operation region with high purity of product and high conversion of isobutene.

Key words:

甲基叔丁基醚, 悬浮催化蒸馏, 数学模型, 分岔分析, 多重定态

摘要：

建立了悬浮催化蒸馏合成甲基叔丁基醚过程的平衡级模型。利用模型模拟研究了特征参数，特别是固液分离器分率φ和塔底流量B对塔性能的影响。结果表明：参数φ对应的多重定态区域的上界非常小，在实际操作条件下，塔内仅存一个高转化率定态。极限点曲线将参数平面“φ-B”按定态解数目划分成3个子域，其中右上角子域是具有唯一定态且异丁烯转化率高和产物纯度高的操作域。

关键词:

甲基叔丁基醚, 悬浮催化蒸馏, 数学模型, 分岔分析, 多重定态