Page 150 - Packed bed columns for absorption, desorption, rectification and direct heat transfer

145

Pe L = —— - Peclet number for the liquid phase;
aH
rr rate constant of the reaction, 1/s;
3
r a - rate constant of a second order chemical reaction, m /(s.mol);
3
V- liquid flow rate trough each of the orifices of the distributor, m /s;
V] and Vj- volumes of the liquid measured for the two experiments in measuring
3
the end effect of the liquid holdup, m ;
3
V pi and V pj- corresponding to Vj and Fj volumes of the packing, m .
Greek letters

2
a - dispersion of the tracer retention time;
T - time measured from the moment of feeding of the tracer in the form of
a <y function, s;
ju - ionic strength;
jUj - attenuation coefficient of the media;
T Eo- measured average integral residence time for the system packing and
measuring cell, s;
T
Ek" average integral residence time for the measuring cell, s;

References

1. DN.M. Zhavoronkov, Hydrodynamics and heat transfer in scrubbers, Sowetskaia nauka,
1944 (In Russian).
2. D. Elcnkov, N. Kolev,, Bulgarian Academy of Scienses, Communications of the department
of chemistry, 3, (1965) 119 (in Russian).
3. N. Kolev, R.Daraktschiev, Verfahrensteehnik, v.7, No 7 (1973)214.
4. O. Schneider, J. Stichlmair, ,,Maldistribiitian in Packed columns", European Congress of
Chemical Engineering 2001 ECCE 3,26-2S Jun 2001, Nuremberg.
5. N. Kolev, Sv. Nakov, L. Ljudcanov, D. Kolev, Chem. Eng. And Proces. 45,6(2006) 429
6. V. Kolar, Private communication
7. N. Kolev, G. Paskalev, Comunications of the department of chemistry, Volume X, Nr
2(1977)200-207(in Russian),
8. Hobler, R. Krupieka Chem stosow. 5(1955)232.
9. J. G.Selinskii, W.W. Kafariv. J. of Applied Ghem. 35 (1962) 1989{In Russian).
10. W.W.Kafarov, Bases of mass transfer, Moskwa, 1962 p 376 (In Russian).
11. H. L. Shulman, C. F. Ulrieh, N. Wells; AIChE Journal, 1, Nr. 2 (1955)247; Shuhnan, C. F.
Ulrich, N. Wells, A. 2. Proulx, AIChE Journal, 1, Nr. 2 (1955)259.
12. N. M. Zhavoronkov, I. A. Gildenblat, W. M. Ramm., Tr. Mosk. Khim. Techn. Inst, 40
(1963)19-34 (in Russian).