摘要
在众多天然气液化工艺流程中,混合制冷剂天然气液化流程因其流程简单、效率高等特点得到广泛应用。混合制冷剂的制冷效率与其组成复杂程度相互约束,使制冷剂的合理配比成为限制MRC液化工艺发展的瓶颈。综合前人研究成果,初步选定其组分,通过正交实验获取实验样本,运用HYSYS流程进行模拟计算;以比功耗值作为目标函数,运用SVM法优化分析,最终得到最优混合制冷剂配比。通过对比验证,优化效果显著。该方法操作简单、高效、准确性好,具有较高的工程应用价值。
Within all the liquefaction processes, the mixed refrigerant cycle process has been widely used because of the simplicity and higher efficiency. The cooling effect and ratio of complexity are restricted with each other so that the reasonable proportion of refrigerants becomes the bottleneck of the mixed refrigerant cycle process. According to the previous research a- chievements, a proportion was chosen initially, an experimental sample was obtained by orthogonal test and calculated by HYSYS software. The energy consumption was as objective function and the results were analysed by SVM method. At last, the optimal proportion was obtained finally. This method is simple, efficient and accurate, and has higher engineering value.
出处
《低温与超导》
北大核心
2017年第9期32-36,65,共6页
Cryogenics and Superconductivity
关键词
天然气液化工艺
混合制冷剂
SVM法
正交试验
优化配比
Liquefied natural gas process, SVM method, Mixed refrigerant, Orthogonal test, Optimization recipe
