Hi, I'm a first year chemical engineering student and I've had a go at this question but can't seem to get the right answer. Any help would be much appreciated.
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Posted 29 November 2016 - 06:56 PM
Hi, I'm a first year chemical engineering student and I've had a go at this question but can't seem to get the right answer. Any help would be much appreciated.
Posted 29 November 2016 - 07:39 PM
Dear kkg14:
This kind of problems are usually worked like this, lets call I, the flow into the reactor, F the fresh stream and R the recycle stream. Based on the glucose concentration we have:
F*G_F+R*G_R=(F+R)G_I
We want the recycle ratio, which is basically a ratio of flows, so for example, we divide by R:
(F/R)*G_F+G_R=(F/R+1)G_I
Plugging the values:
(F/R)*0.55+0.181=(F/R+1)0.4066
Now you can get the ratio (F/R). You can use other component as reference, and you should get the same ratio IF the data are consistent.
I'm sure you can carry out the calculation process by yourself.
Best regards.
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