Download Packed towers : in processing and environmental technology by Reinhard Billet PDF

By Reinhard Billet

The emerging pattern in the direction of the operation of packed towers in separation strategies was once initiated after the power trouble within the seventies. This e-book is the 1st of its style which treats all of the vital theoretical and sensible facets for the calculation, layout and operation of those packed towers.

the most purposes of packed towers are within the separation of gas-liquid or vapour-liquid platforms. This e-book considers all beneficial properties of packed towers for business separation vegetation that may be utilized in technique and environmental know-how. It contains a entire therapy of packed-bed expertise and the benefits of packed towers, equivalent to the applying of superior tools for strength saving reasons, environmental safeguard measures and the revamping of current crops, are in actual fact outlined.

The equipment offered are in accordance with sound actual and mathematical modelling, the validity of which were proven by way of a number of experimental investigations played in laboratories and pilot crops after which scaled as much as meet functional, business necessities.

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7 mbar 6 / a . 2 Vapour capacity factor Fv [m" 1/z s"1 kg 1/z ] Fig. 13. 4 49 Experimental results Metallic rings, ds=220 mm, Z=2036 1/m2 Chlorobenzene/Ethylbenzene, 67 mbar, L/V=1, H=15 m 38-mm Pall ring N=14301 irr3 — o — VSP ring 1 N = 30948 rrr3 —^— 50-mm Pall ring N=6000 m"3 — o - VSP ring 2 N = 7621 m"3 ••••A--- a Z3 CO i 6 E •te _ co CO <±> 6 / fcr . • *- 0 o CD CD. 0 Vapour capacity factor Fv [m~1/2s~1 kg 1/z ] Fig. 14.

The height HTUOV of an overall mass transfer unit is related as follows to the heights of the transfer units in the gas HTUV and liquid HTUL phases: HTUQV = HTUV + X HTUL (3-11) where X is the stripping factor and is given by (3-12) in which myx is the average slope of the equilibrium curve in the range of concentrations concerned. 3 Test systems 37 The height of a transfer unit in the liquid phase HTUL is obtained from the corresponding number of transfer units NTUL: HTUL = - J ^ (3-13) The volumetric mass transfer coefficient $LaPh in the liquid phase is given by The numerical value of HTUOV is obtained from the number of overall transfer units NTUOyin the gas phase for a given liquid load uL.

13. 4 49 Experimental results Metallic rings, ds=220 mm, Z=2036 1/m2 Chlorobenzene/Ethylbenzene, 67 mbar, L/V=1, H=15 m 38-mm Pall ring N=14301 irr3 — o — VSP ring 1 N = 30948 rrr3 —^— 50-mm Pall ring N=6000 m"3 — o - VSP ring 2 N = 7621 m"3 ••••A--- a Z3 CO i 6 E •te _ co CO <±> 6 / fcr . • *- 0 o CD CD. 0 Vapour capacity factor Fv [m~1/2s~1 kg 1/z ] Fig. 14.

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