NON-LINEAR DYNAMICS OF PACKING LAYERS IN WATERED SCRUBBERS
Advancing the chemical engineering fundamentals
Distillation, Absorption & Extraction - III (T2-10c)
Keywords: packing towers, phases distribution, drift coefficient, scaling
NON-LINEAR DYNAMICS OF PACKING LAYERS
IN WATERED SCRUBBERS
M.A. Serimbetov, A.M. Brenerīĸ
State University of South Kazakhstan, Tauke Khan av. 5, Shimkent, Kazakhstan
Packed gas-liquid towers are widespread in chemical industry and energetic. It is well known that a regularity of phases distribution in packed towers determines the efficiency of transport phenomena. In its turn the distribution of interacting phases in an apparatus is dependent on the packing structure. The aim of this work is to carry out methods for modelling the dynamics of tower packings composed from heavy elements of complex shape and for describing various hydrodynamic regimes in packed scrubbers.
Peculiarities of packing layers dynamics in this case are explained by possibility of elements space re-orientation under the influence of gas and liquid flow. This re-orientation leads to changing the drift coefficient within the bounds from initial value to certain minimum. In our paper we submit the model differential equation describing the non-linear dependence of the drift coefficient on average velocity of gas flowing past the packing layer. The packing layer dynamics has been investigated in wide range of gas velocities. The hydrodynamic regimes from the rest layer to the fluidization have been described by numerical experiments and qualitative analyzes.
Specifically, it was shown that layer restriction by column walls leads to increasing the drift coefficient nearby the walls and to disturbance of the uniform gas distribution. The estimations for heat and mass transfer intensity and scaling effect based on the submitted model approach have been obtained and compared with experimental data.
Presented Tuesday 18, 09:45 to 10:05, in session Distillation, Absorption & Extraction - III (T2-10c).
