This paper describes the simulative targets made on the solid-liquid nonhomophase ni- trators which are often used in explosives production. The flow model of RTD of the system is set and inspeeted. Study of the RTD laws for the solid and liquid phases is made inside five imitative nitrators with similar geometrical figures(dish-bottom eyelinder and volume range from 0. 005 to 0. 150m
3
). In conclution
it provides theoretical and experimental basis for the pilot test and the scalc-up of the solid-liquid nonhomophase nitrators and has great practical significance.