摘要
提出一种新型乙腈法丁二烯抽提工艺。先对C4馏分选择加氢,将其中总炔烃脱除至小于15×10-6(w),再进行丁二烯抽提。采用Aspen Plus流程模拟软件对新型乙腈法丁二烯抽提工艺进行模拟计算。模拟结果表明,新工艺取消了第二萃取精馏塔系统,简化了流程;与传统工艺相比,新工艺萃取剂与C4馏分的质量比由6.6降至6.2,蒸汽、冷却水、电的消耗分别节省14.8%,11.9%,17.1%;取消了汽提塔的侧线采出,既提高了丁二烯的回收率,又提高了生产过程的安全性。
A novel process for 1, 3-butadien extraction with acetonitrile was proposed. C4 fraction was hydrogenated selectively, which led to the total content of the alkynes was lowered to 15 × 10^6（w）, and then the 1, 3-butadien was extracted out. The 1, 3-butadiene extraction process with acetonitrile was simulated by Aspen Plus software. The results showed that the second extractive distillation column system could be canceled in the new process. Compared to a conventional process, the ratio of solvent to C4 fraction decreased from 6.6 to 6.2 in the new process, and the steam, cooling water and electricity consumption were saved by 14.8%, 11.9% and 17.1%, respectively. The side-draw of the stripper was canceled, which resulted in increasing the butadiene recovery and heightening the security of the process.
出处
《石油化工》
CAS
CSCD
北大核心
2013年第5期542-546,共5页
Petrochemical Technology
