Calculate the plate efficiency for the plate design considered in Examples 11.11 and 11.12, using Van Winkle’s correlation.
Question 11.13: Calculate the plate efficiency for the plate design consider...
From Examples 11.12 and 11.11:
\rho_{L}=925 kg / m ^{3},
\rho_{v}=1.35 kg / m ^{3}
\mu_{L}=0.34 \times 10^{-3} Ns / m ^{2}
\mu_{v}=10.0 \times 10^{-6} Ns / m ^{2}
D_{L K}=D_{L}=4.64 \times 10^{-9} m ^{2} / s
h_{w}=50 mm
F A(\text { fractional area })=A_{h} / A_{c}=\frac{0.038}{0.50}=0.076
u_{v}=\text { superficial vapour velocity }=\frac{0.81}{0.50}=1.62 m / s
\sigma_{L}=60 \times 10^{-3} N / m
\operatorname{Dg}=\left(\frac{60 \times 10^{-3}}{0.34 \times 10^{-3} \times 1.62}\right)=109
Sc =\left(\frac{0.34 \times 10^{-3}}{925 \times 4.64 \times 10^{-9}}\right)=79
\operatorname{Re}=\left(\frac{50 \times 10^{-3} \times 1.62 \times 1.35}{0.34 \times 10^{-3} \times 0.076}\right)=4232
E_{m V}=0.07(109)^{0.14}(79)^{0.25}(4232)^{0.08} = 0.79 (79 per cent)
Related Answered Questions
As the solubility of SO _{2} in wat...
The top and bottom temperatures (dew points and bu...
From Example 11.5, feed composition, mol fractions...
Only sufficient trial calculations will be made to...
Composition of feed + solvent, point o = 0.45 x 10...
As the liquid and vapour flow-rates and compositio...
Plate will be in the stripping section (see Figure...
For two phases to exist the flash temperature must...
There is no point in operating this column at othe...
From the McCabe-Thiele diagram in Example 11.2:
sl...