Chemical Engineering Mcqs

In a rotary drier, the average retention time of solid is (where Z = length of the drier, metres ρ = apparent solid density, kg/m3 L = flow rate of dry solids, kg/see. m2 drier crosssection H = hold up of solid.) ?

(A)  Z.H.ρ/L

(B)  L/Z.H.ρ

(C)  H.ρ/L

(D)  Z.H/ρL

Submitted By :Ali Uppal

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