生物丁醇分离技术的研究进展及发展趋势  

Current advances and development of bio-butanol separation techniques

作　　者：蔡的 李树峰 司志豪 秦培勇[1] 谭天伟[1] CAI Di;LI Shufeng;SI Zhihao;QIN Peiyong;TAN Tianwei(College of Life Science and Technology,Beijing University of Chemical Technology,Beijing 100029,China)

机构地区：[1]北京化工大学生命科学与技术学院,北京100029

出　　处：《化工进展》2021年第3期1161-1177,共17页Chemical Industry and Engineering Progress

基　　金：国家重点研发计划(2018YFB1501704);国家自然科学基金(21978016,22078018);中国博士后科学基金(2020M670114)。

摘　　要：生物基(正)丁醇是一种重要的化学品和替代燃料,其主要制备途径为糖质底物的丙酮-丁醇-乙醇(ABE)发酵。受制于发酵副产物多、溶剂浓度低、产物共沸等因素,传统的生物丁醇分离过程存在分离能耗大、成本高等问题,制约其产业化制备。为解决生物丁醇分离的技术瓶颈,近年来,应用新型分离技术实现与ABE发酵过程的耦合成为研究的热点。本文综述了生物丁醇分离技术的最新研究进展,讨论了基于汽液平衡、相转移、膜分离技术等新型分离方式的技术特点;并针对多级分离级联系统开发、面向终产物的精馏技术的新趋势、新特点进行剖析和讨论。随着分离技术的发展和进步、生物炼制工艺开发和集成,生物丁醇的制备成本可望进一步降低,提升市场竞争力。Biobutanol(n-butanol)is an important bulk chemical and biofuel candidate,which can be obtained via acetone-butanol-ethanol(ABE)fermentation from biomass.Because of the low concentration of solvents products,the conventional biobutanol separation is costly and energy-intensive.To overcome the above limitation,recently,alternative separation techniques are emerged.In this review,the current advances of the potential alternative separation techniques,including the vapor-liquid equilibrium,solvents polarity-based techniques and membrane-based separation for biobutanol recovery are summarized,followed by discussing the multi-stage cascade separations.Facing the generation of commercial guide biobutanol production,the trends for ABE distillation is also included.With the improvement of separation technology and the development of biorefinery process,the overall cost of biobutanol production can be decreased,which would further improve the competitiveness of biobutanol process in terms of commercialization.

关 键 词：生物丁醇 丙酮-丁醇-乙醇发酵 原位分离 膜分离 精馏 生物炼制 

分 类 号：TQ028[化学工程]