摘要
在石油、医药、化工等行业生产和分离过程中,常伴随着共沸或沸点相近混合物的产生,其高效节能分离是工业清洁生产和可持续发展的前提。作为一种分离共沸或近沸等难分离混合物的重要手段,特殊精馏引起了广泛关注。然而,特殊精馏对能源的消耗量非常大,开发低成本、性能可靠的特殊精馏强化技术对实现经济和能源的可持续发展具有重要意义。基于对特殊精馏塔内外传质传热规律的研究,本文从强化原理和工艺改进技术两方面,重点介绍了热耦精馏、隔壁塔、侧线精馏、有机朗肯循环、热泵精馏、差压热耦合等内外热耦合强化技术在特殊精馏节能增效等方面的研究进展,并展望了其未来发展的挑战和机遇,以期为特殊精馏在热耦合强化方面的理论研究与应用提供参考。
In the production and separation process of petroleum,medicine,chemical industry and other industries,it is often accompanied by the production of azeotropic or similar boiling point mixtures.Its highefficiency and energy-saving separation is a prerequisite for industrial clean production and sustainable development.Special distillation as an effective separation method attracts substantial attention from researchers.However,special distillation is a process with high-energy consumption.Therefore,the development of intensification technology for special distillation with low costs and reliable performance is of great significance for the economy and energy sustainable development.According to the heat and mass transfer laws of special distillation,this work introduces the research advances of thermally coupled distillation,dividing wall column,sidestream distillation,organic Rankine cycle,heat pump and different pressure thermally coupled technologies in energy saving special distillation process from the intensification principles and retrofitting technologies.In addition,this work outlines the challenge and opportunity of intensification technology to provide references of the theoretical research and application to special distillation.
作者
孙诗瑞
杨傲
石涛
申威峰
SUN Shirui;YANG Ao;SHI Tao;SHEN Weifeng(Scohool of Chemistry and Chemical Engineering,National-municipal Joint Engineering Laboratory for Chemical Process Intensification and Reaction,Chongqing University,Chongqing 401331,China)
出处
《化工学报》
EI
CAS
CSCD
北大核心
2020年第10期4575-4589,共15页
CIESC Journal
基金
国家自然科学基金项目(21878028)
中央高校基本科研业务费专项资金重点项目(2019CDQYHG021)。
关键词
共沸(混合)物
蒸馏
热耦合
过程强化
节能降耗
分离
azeotrope
distillation
thermally coupling
process intensification
energy saving
separation
