异戊烷一步脱氢制备异戊二烯工艺模拟分析及经济评价

Simulation and economic evaluation of one step dehydrogenation of isopentane to produce isoprene

异戊二烯是一种重要的化工有机原料,广泛用于合成橡胶和精细化工产品领域,具有巨大的市场价值。而炼油装置产生的大量C5烷烃经济价值较低,目前没有很好的利用方法,因此利用廉价的C5烷烃制备高附加值的异戊二烯是一种具有前途的综合利用策略。本文对异戊烷一步脱氢制备异戊二烯工艺过程进行了建模,并利用夹点技术对全流程进行了换热网络综合,在此基础上对此工艺进行了技术经济评价,结果显示,优化后的流程具有较高的经济收益,异戊二烯产品价格对装置的经济性具有重要影响。此种方法可以作为C5烷烃中异戊烷增值利用的有效途径。

Isoprene is an important organic raw material,which is widely used in the fields of synthetic rubber and fine chemical products and has great market value.However,the economic value of a large number of C5 alkanes produced by oil refining units is low,so there is no good method for its utilization.It is a promising comprehensive utilization strategy to prepare isoprene with high added value from cheap C5 alkanes.In this paper,the process of one-step dehydrogenation of isopentane to produce isoprene was modeled,and the heat exchanger network of the whole process was synthesized by pinch technology.On this basis,the techno economic evaluation of the process was carried out.The results showed that the optimized process has high economic benefits,and the price of isoprene products has an important impact on the economy of the unit.The present method can be used as an effective way to increase the value of isopentane in C5 alkane.