通过对异构化装置的工艺流程改造,利用原装置原料轻石脑油、戊烷油、抽余油实现正戊烷、异戊烷、戊烷发泡剂、正己烷、异己烷的工业生产。工业试验结果表明,通过原异构化装置工艺流程改造,在脱异戊烷塔利旧、脱异己烷塔利旧,异构化稳定塔改造至塔径ϕ2 200 mm,塔盘数增加至65块的前提下,所生产的异戊烷产品质量符合HG/T 5613—2019《工业用异戊烷》。所生产的正戊烷产品质量分数可达99%,戊烷发泡剂满足GB/T 22053—2008《戊烷发泡剂》,正己烷满足GB/T 17602—2018《工业己烷》,异己烷满足HG/T 5612—2019《工业用异己烷》。此技术可提高产品的附加值,实现资源的合理配置。

Through renovating the process of the isomerization plant,N-pentane,isopentane,pentane foaming agent,n-hexane and isohexane are produced from light naphtha,pentane oil and extracted oil,which are the feedstocks in the original isomerization plant.The industrial test results show that the quality of isopentane product generated can meet the requirement of HG/T 5613—2019 “Industrial Isopentane” under the process conditions where both the original de-isopentane column and de-isohexane column remain unchanged,the diameter of isomerization stabilizing column is increased to 2 200 mm,and its tray number increases to 65.The mass fraction of n-pentane produced can reach 99%,the quality of pentane foaming agent product can meet the requirement of GB/T 22053—2008 “Pentane Foaming Agent”,the quality of n-hexane product can meet the requirement of GB/T 17602—2018 “Industrial Hexane”,and the quality of isohexane can meet the requirement of HG/T 5612—2019 “Industrial iso-Hexane”.This renovated technology can improve the added value of products and realize the rational allocation of resources.