四氟乙烯的精馏系统从原来的三塔流程改用二塔流程；
为了实现上述改进，必须透彻理解精馏原理和精馏系统是如何设计的。
To achieve this improvement, a thorough understanding of distillation principles and how distillation systems are designed is essential.
计算表明，本算法可以快速准确地求解大规模复杂精馏系统优化综合问题。
The calculation results demonstrated that IGP could solve the problems of optimization synthesis for large-scale complex distillation system rapidly.
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