轻汽油醚化催化蒸馏过程模拟研究  

SIMULATION OF LIGHT GASOLINE ETHERIFICATION BY CATALYTIC DISTILLATION

作　　者：袁清[1] 毛俊义[1] 黄涛[1] 张占柱[1] 

机构地区：[1]中国石化石油化工科学研究院,北京100083

出　　处：《石油炼制与化工》2011年第7期67-72,共6页Petroleum Processing and Petrochemicals

摘　　要：利用AspenPlus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，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RadFrac模型和基于速率精馏的非平衡级RateFrac模型。对模型验证的结果表明，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2～3h、反应温度70℃等，为轻汽油醚化过程的操作优化、催化剂包的制作以及工艺设计提供指导和依据。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 analysis, including the influence of space velocity, reaction temperature, methanol appending, feeding position, as well as the catalyst packing properties on the etherification efficiency. The optimized operating parameters were obtained from the model analysis, such as space velocity of 2-3 h^-1, reaction temperature of 70 ℃ and so forth, which will be helpful for the optimization of light gasoline etherification operation, facture of suitable catalyst packets and process design as well.

关 键 词：轻汽油 醚化 甲基叔戊基醚 催化蒸馏 模拟 

分 类 号：TE624.5[石油与天然气工程—油气加工工程]