新时期C4馏分中异丁烯综合利用分析

Analysis of comprehensive utilization of isobutene in C4 fraction in the new period

随着国家对生物燃料乙醇生产和推广使用车用乙醇汽油的方案实施,C4馏分中异丁烯的利用引起科研工作者和石油炼制行业的思考。我国C4资源利用尤其是异丁烯一直以来主要依靠甲基叔丁基醚(MTBE)生产路线,其中,90%用于汽油辛烷值添加剂。汽车能源清洁化是新能源发展必由之路,我国的能源结构正在经历前所未有的全面重构,如何应对逐渐步入的乙醇汽油时代?如何满足汽油的清洁绿色性能?异丁烯等C4资源如何重新布局?这些成为各石油化工企业的很难面对又不得不面对的困惑。着重介绍可改造或代替MTBE生产过程,为C4资源尤其是异丁烯的综合利用提供出路的主要技术,并对不同技术进行工艺特点、产品性质与市场应用等方面的分析,为市场应对新时期清洁燃料等需求提供借鉴与帮助。

With the national implementation of biofuel ethanol production and promotion of vehicle ethanol gasoline,the utilization of isobutene in C4 fraction has to be considered by researchers and petroleum refining industry.In China,the utilization of C4 resources,especially isobutene,has always relied on MTBE production route,90%of which is used for gasoline octane number additives.Car energy cleanliness is the only way to develop new energy source.Energy structure in China is undergoing an unprecedented overall restructuring.How to deal with the gradual stepping into the era of ethanol gasoline,how to get clean gasoline and green energy,and how to rearrange C4 resources such as isobutene?These have become difficulties which the petrochemical enterprises have to face.This paper mainly introduces the main technologies that can be modified or replaced for MTBE production to provide a way out for comprehensive utilization of C4 resources,especially isobutene.The process characteristics,product properties,market applications of different technologies and so on are carefully analyzed in this paper.It is hoped to be helpful for respond to clean fuel and many other needs in new period.