摘要
在丙烯的生产过程中,因丙烯/丙烷的分子大小及挥发性较为接近而难以高效分离,其精馏分离过程能耗较高。变压吸附(PSA)技术作为一种高效的气体分离技术,其核心是高效吸附剂的开发。该文综述了近年来国内外关于丙烯/丙烷分离吸附剂的研究进展。重点介绍了分子筛、碳分子筛以及金属-有机骨架材料(MOFs)在丙烯/丙烷分离上的应用。详细阐述了影响多孔材料丙烯/丙烷吸附分离比的关键因素,并对比了几种吸附分离材料的优缺点。研究发现,应根据实际应用场合、原料气体的组成、丙烯/丙烷相对含量以及吸附材料的实际使用条件等来选择合适的吸附剂。最后,对丙烯/丙烷吸附分离材料的开发及其在实际中的应用进行了展望。
In the production process of propylene,it is difficult to separate propylene/propane because their molecular size and volatility are close,thus the energy consumption of distillation separation process is high.Pressure swing adsorption(PSA)process is an energy-efficient technology in gas separation,and its core is the development of high-efficient adsorption agent.The research process of adsorbents for the separation of propylene/propane are reviewde.First,the application of molecular sieves,carbon molecular sieves and metal-organic frameworks(MOFs)in propylene/propane separation is introduced.Main factors affecting the behaviors of the adsorbents are discussed.Furthermore,the advantages and disadvantages of several adsorbents are compared.The results show that the appropriate adsorbent should be selected according to the practical application,the composition of raw gas,the relative content of propylene/propane,and the actual working conditions of the adsorbent.Finally,the development of the adsorbents for propylene/propane separation and their applications in practice are prospected.
作者
张延鹏
张胜中
王红涛
张英
ZHANG Yanpeng;ZHANG Shengzhong;WANG Hongtao;ZHANG Ying(SINOPEC Dalian Research Institute of Petroleum and Petrochemicals,Dalian 116045,Liaoning,China)
出处
《精细化工》
EI
CAS
CSCD
北大核心
2020年第7期1327-1333,共7页
Fine Chemicals
基金
中国石油化工股份有限公司资助项目(118025-4)。
关键词
丙烯/丙烷分离
变压吸附
分子筛
碳分子筛
金属有机骨架材料
separation of propylene/propane
pressure swing adsorption
molecular sieve
carbon molecular sieve
metal-organic frameworks
