| 摘要 |
<p>The invention relates to a method for adapting the geometry of a dispersion nozzle (10) in regard to a required size distribution of a phase dispersed in a dispersing phase by means of the dispersion nozzle (10), comprising the steps of a) proceeding form a specified geometry of the dispersion nozzle (10): calculating a shear stress rate S and a relative velocity v0 between the phases; b) from the values calculated in step a): determining at least one local maximum stable radius for the dispersed phase according to the relation Rb=(2s/Cs?LSv0)1/2, wherein s indicates the surface tension of the dispersed phase, Cs indicates the coefficient of friction of the dispersed phase in the dispersing phase, and ?L indicates the density of the dispersing phase; c) determining the distribution of the local maximum stable radius over a cross-sectional area (20, 22, 24) of the dispersion nozzle (10); d) if a specified maximum stable radius is exceeded in at least one region of the cross-sectional area (20, 22, 24): changing the geometry of the dispersion nozzle (10) 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.</p> |
