多组元分批精馏中各种设计参数对回流比的影响  

Effect of Design Parameters on Reflux Ratio in Multicomponent Batch Distillation

作　　者：张雪梅[1] 张卫江[1] 简春贵[2] 张军保[2] 周莹晖 

机构地区：[1]天津大学化工学院,天津300072 [2]天津天大天久科技股份有限公司,天津300072

出　　处：《化工进展》2004年第5期519-523,共5页Chemical Industry and Engineering Progress

摘　　要：考察了恒回流比分批精馏过程中各种设计参数对回流比的影响 ,并用分离难度系数关联了各参数 ,研究中权衡了生产中的操作费用和设备投资 ,结果表明 :分批精馏设计中适宜的分离难度系数应介于 0 .4～ 0 .6 ,对于一般情况可取 0 .5 ,视具体情况可调整该值的大小。The investigation on effects of various design parameters on reflux ratio for constant reflux ratio operation was conducted. And the degree of difficulty of separation ( q u) was used to correlate the parameters for ternary systems. Trade-off was made between operation cost and equipment cost in the study. The results showed that the appropriate range of q u was 0.4～0.6 for a separation task. And q u can be specified as 0.5 ordinarily, which can be readjusted according to actual situation. The study has laid the foundation for short-cut design of multicomponent batch distillation column.

关 键 词：多元分批精馏 设计参数 回流比 分离难度系数 

分 类 号：TQ028[化学工程]