分离乙酰丙酸,水,甲醇,硫酸
用DSTWU精馏塔分离乙酰丙酸,水,甲酸和硫酸,要求乙酰丙酸的塔釜收率为99.5%,塔顶甲酸收率为96.5%,水为99.8%,用的是NRTL(不知道选啥好)但是回流比,塔板数结果出来有错误,请教各位大神帮忙看看,下面是计算过程<< Problem specifications modified 19:20:38 Sat Apr 13, 2019>>->Processing input specifications ...
->Finished processing new specifications
->Calculations begin ...
Block: B1 Model: DSTWU
**ERROR
MINIMUM REFLUX RATIO CALCULATED FROM UNDERWOOD EQUATION
IS -0.35917E-02.REFLUX RATIO RESET TO 0.1.
->Simulation calculations completed ...
***No Warnings were issued during Input Translation ***
***Summary of Simulation Errors***
Physical
Property System Simulation
Terminal Errors 0 0 0
Severe Errors 0 0 0
Errors 0 0 1
Warnings 0 0 0
这个体系不应该用DSWU 谢谢您的回复,不是应该先用dswu简洁计算得出回流比和塔板数,然后复杂计算的么,不用dswu回流比和塔板数怎么知道?我是个初学者请您多多指教
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