轻汽油醚化催化蒸馏过程模拟研究

利用Aspen Plus化工流程模拟软件，对轻汽油预醚化-催化蒸馏组合工艺过程进行模拟和研究。针对固定床反应器和催化蒸馏塔内C5活性烯烃与甲醇醚化生成甲基叔戊基醚（TAME）反应分别采用均相和非均相反应动力学模型；催化蒸馏塔采用平衡级RedFrac模型和基于速率精馏的非平衡级RateFrac模型。对模型验证结果表明，所建立的轻汽油预醚化-催化蒸馏组合工艺模型具有较高的准确性和适用性。利用该模型对轻汽油醚化合成TAME过程进行分析，分别考察空速、反应温度、补加甲醇、进料位置以及反应段催化剂包性质等对C5活性烯烃转化率的影响，得到轻汽油预醚化-催化蒸馏组合工艺优化的操作条件为空速2~3 h-1，反应温度70 ℃等，为轻汽油醚化过程操作和优化以及工艺设计提供重要指导和依据。

SIMULATION OF LIGHT GASOLINE ETHERIFICATION BY CATALYTIC DISTILLATION

Aspen Plus software was applied to the simulation of etherification of reactive C5 alkene in light gasoline with methanol producing tert-amyl methyl ether(TAME)by catalytic distillation(CD)process in this work.Homogeneous and heterogeneous reaction kinetic models were applied in the fixed bed pre-reactor and CD column;both the equilibrium and non-equilibrium models were adopted in the CD column.After been validated by experimental data,this model was applied to the light gasoline etherification process anal...