MODELING THE VERTICAL FLOW OF A GASEOUS MIXTURE WITH SOLID INCLUSIONS IN A CYLINDRICAL PIPE

摘要

Reduction of experimental data obtained in fluidization and film regimes is required in the building of adequate models representing the feed of a gaseous mixture with solid inclusions into a liquid counterflow within a vessel. Reduction to a small-dimensional model permitting effective computer implementation is performed, proceeding from equations of the conservation of the radial moment of solid particles and the conservation of energy with the inclusion of laws governing the conservation of axial moments of the gas and solid particles. Results of numerical calculations within the framework of the refined model simulating MEA cleaning in a counterflow column make it possible to draw a conclusion concerning the potential for optimization of geometric characteristics of the vessel employed. Temperature fluctuations in the effective zone, i.e., structuring of the counterflow along the radius of the effective channel, may be observed when the parameters of the model are varied and the temperature on the boundary of the column is increased. Among other things, the results of the study permit assessment of the reduction in operational effectiveness of the packing in a selected regime.