生物乙醇原位分离技术的研究进展

doi:10.16085/j.issn.1000-6613.2021-2230

摘要/Abstract

摘要：

生物乙醇是一种重要的可再生生物燃料，使用生物乙醇可大幅减少温室气体排放。为了建立更高效低能耗的生物乙醇回收工艺，原位分离（ISPR）技术应运而生。本文综述了近年来乙醇原位分离的研究进展，从原理及应用等进行多方面详细地介绍，包括气提、真空发酵、吸附、液-液萃取、渗透汽化、膜蒸馏等分离技术。针对分离性能、能耗成本等问题分析了不同分离技术耦合发酵过程的优势及不足，重点回顾了以渗透汽化为代表的膜分离技术，总结了渗透汽化膜材料的选择以及膜的制备方法，旨在提升乙醇分离膜性能优化乙醇分离工艺。为整合不同分离技术的特点及优势，聚焦多级耦合分离系统的开发对各级分离技术联用的性能及潜力进行剖析与评价，并在此基础上研判其发展前景。

关键词: 生物乙醇, 原位分离技术, 发酵过程, 耦合分离

Abstract:

As an important renewable biofuel, the use of bioethanol can greatly reduce greenhouse gas emissions. In order to establish a more efficient and low-energy bioethanol recovery process, in situ separation (ISPR) technology came into being. This paper reviews the research progress of ISPR technology of ethanol in recent years, and introduces the principle and application in detail, including gas stripping, vacuum fermentation, adsorption, liquid-liquid extraction, pervaporation, membrane distillation and other separation technologies. Aiming at the problems of separation performance, energy consumption and cost, this paper analyzes the advantages and disadvantages of different separation technologies coupled with fermentation process. Meanwhile, this paper focuses on the membrane separation technology represented by pervaporation, and summarizes the selection of membrane materials and the preparation methods of membrane, in order to improve the performance of ethanol separation membrane and optimize ethanol separation process. Furthermore, to integrate the characteristics and advantages of different separation technologies, focusing on the development of multi-stage coupling separation system, the performance and potential for the combination of separation technologies are evaluated, to which the development prospect is judged on this basis.

Key words: bioethanol, in situ separation technology, fermentation process, coupling separation

中图分类号:

吴涵竹, 司志豪, 秦培勇. 生物乙醇原位分离技术的研究进展[J]. 化工进展, 2022, 41(3): 1318-1329.

WU Hanzhu, SI Zhihao, QIN Peiyong. Current progress of in situ bioethanol separation technology[J]. Chemical Industry and Engineering Progress, 2022, 41(3): 1318-1329.

图/表 3

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