Procedimiento para adaptar la geometría de una tobera de dispersión con vistas a una distribución de tamaños exigida de una fase dispersada, comprende calcular el índice de cizalla y una velocidad relativa partiendo de una geometría predefinida de la tobera, determinar al menos un radio estable máximo local para la fase dispersada.

摘要

A specified geometry of a dispersion nozzle is adapted for a required size distribution of a phase dispersed in a dispersing phase by calculating a shear stress rate S and a relative velocity v0 between phases; determining at least one local maximum stable radius for the dispersed phase using values obtained from Rb=(2σ/CsρLSv0)1/2, whereσindicates surface tension of the dispersed phase, Cs indicates the coefficient of friction of the dispersed phase in the dispersing phase, andρL indicates density of the dispersing phase; determining the distribution of the local maximum stable radius over a cross-sectional area of the dispersion nozzle; and, if a specified maximum stable radius is exceeded in at least one region of the cross-sectional area, changing the geometry of the dispersion nozzle such that a higher shear stress rate S and/or a higher relative velocity v0 of the phases is achieved at least in some regions.