小型槽の攪拌効率に及ぼす操作条件

概要

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The volumetric oxygen transfer coefficient (K_La) and power requirement (P_g) under various operating conditions in 20 liter laboratory fermentors were examined. Under operating conditions, the impeller spacing is a very important factor for mixing effeciency. Experimental results of plotting K_La against P_g for each impeller spacing ratio (s/D_i) are dependent upon the dimensions of the impellers. (Fig. 4A-C) When the impellers are closer together, as in Fig. 4A and B, K_La is found correlative with P_g in accordance with the size of the impellers. When the impellers are apart twice the diameter of the impeller apart, as in Fig. 4C, a similar K_La is obtained if the P_g is maintained at similar values. It is generally concluded that it is impossible to select the correct spacing, because K_La does not correlate with P_g Independent of the impeller diameter.
社団法人日本生物工学会の論文
1968-10-25