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10.16. A stirred-tank reactor is to be scaled down from 10 m3 to 0.1 m3. The...

10.16. A stirred-tank reactor is to be scaled down from 10 m3 to 0.1 m3. The dimensions of the large tank are Dt = 2 m; Di = 0.5 m; N = 100 rpm.

a. Determine the dimensions of the small tank (Dt, Di, H) by using geometric similarity.

b. What would be the required rotational speed of the impeller in the small tank if the following criteria were used?

b1. Constant tip speed

b2. Constant impeller Re number

b3. From the results of b1 and b2, would scale-down be based on constant tip speed or impeller Re number? Justify your answer.

Engineering   Chemical-Engineering   
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10.16. A stirred-tank reactor is to be scaled down from 10 m3 to 0.1 m3. The...
10.16. A stirred-tank reactor is to be scaled down from 10 m3 to 0.1 m3. The dimensions of the large tank are Dt = 2 m; Di = 0.5 m; N = 100 rpm. a. Determine the dimensions of the small tank (Dt, Di, H) by using geometric similarity. b. What would be the required rotational speed of the impeller in the small tank if the following criteria were used? b1. Constant tip speed b2. Constant impeller Re number
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