Abstract: In this paper,an improved crude oil distillation process is presented and simulated by PRO/II. The calculation results indicate that given the heat exchange satisfaction of demand the atmospheric still of the new process can save energy by 18.3%, while maintaining a higher distil-off ratio than the traditional on by 0.9%. Additionally, by applying deep distil-off section to the vacuum column, the distil-off ratio can be raised by 0.46% with the same energy consumption. A heat exchanger network for the new process is designed by threshold method and simulated. The calculation results confirm the former assumption about heat exchange objective and the energy conservation effect of the new process.

摘要： 提出了一种新型常减压流程 ,并利用大型化工工程软件PRO/II对其进行了模拟 .模拟结果表明 :新流程能较好的达到所需的换热要求 ;同时在常压拔出率较传统流程提高 0 .9%的情况下 ,新流程可节能 1 8.3% .另外 ,在减压炉能耗保持不变的情况下 ,带深拔段的新流程可使减压段拔出率提高 0 .46% .文中还利用阈值法对新流程设计了换热网络 ,模拟计算结果进一步验证了新流程节能效果和良好的应用前景 .