节能型乙醇蒸馏及脱水集成工艺  

Energy-saving integrated technologies for distillation and dehydration of bioethanol

作　　者：李鑫钢[1,2] 李学刚[1] 李洪[1,2] 

机构地区：[1]天津大学化工学院,天津300072 [2]精馏技术国家工程研究中心,天津300072

出　　处：《化工进展》2010年第1期178-182,共5页Chemical Industry and Engineering Progress

基　　金："十一五"国家科技支撑计划资助项目(2007BAD75B05)

摘　　要：围绕由生物质发酵醪液生产燃料乙醇过程中精馏与脱水工艺展开研究,提出了精馏塔塔顶部分冷凝技术。通过计算机模拟,着重从能耗方面将该方案与常规工艺以及最近出现的回流段无水乙醇共沸精馏技术进行比较。结果表明,部分冷凝工艺和回流段无水乙醇共沸精馏流程节能效果显著。The technologies of distillation and dehydration for producing fuel-grade ethanol from dilute fermentation broths have been studied, and a partial condensation technique in the overhead condenser is proposed. This proposed technique is compared through simulation using commercial software with the original process and the anhydrous ethanol reflux azeotropic distillation technique recently developed with emphasis on the energy efficiency of each process. Both the partial condensation technique and the anhydrous ethanol reflux azeotropic distillation technique show great advantage in energy saving according to the simulation results.

关 键 词：节能 部分冷凝 回流段无水乙醇共沸精馏 燃料乙醇 

分 类 号：TQ028[化学工程]