作者chetsai (Ivan)
看板ChemEng
标题[问题] 想问一题反应工程考古题
时间Sun Mar 20 15:23:58 2011
A rapid,first-order liquid reaction is carried out in a
fixed-volume,well-mixed flow reactor under isothermal condition.Let τ and Ts
be the space time and the time necessary to reach 99% ofthe steady-state
concentration,
respectively.Please derive the following relation: Ts=4.6/k,where k is the
specific reaction rate.
我有疑问的是这题到底是steady state 还是 unsteady state 呢???
而且到底是batch 还是flow system呢?
因为我的想法是: flow 系统他得体积是固定的 ,且浓度是随space time变
batch 系统浓度是随时间变的
所以有点被搞混!! 想请问我观念哪里错了??
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1F：推 allen770:CSTR 03/21 22:46
2F：推 bbdd203:关键字 well-mixed 根据长期写考古题的直觉~"~ 03/22 13:24
3F：→ bbdd203:所以是CSTR 03/22 13:24
4F：→ thius413:批次的不是也有假设? 03/22 19:35
5F：推 thius413:应该是说flow + well-mixing 03/22 19:37
6F：→ kenhalu:我是用unsteady state(batch)算出答案的ㄝ = = 囧了! 03/23 19:48
7F：推 ken415202:想问这题到底是批次还是连续 怎麽都一起出现在同一题中? 03/24 17:17