METHOD OF CONTROLLING DISPERSE FLOWS OF IMMISCIBLE LIQUIDS IN MICROCHANNEL DEVICE TO CREATE DROPLETS OF MICRON AND SUBMICRON SIZE Russian patent published in 2024 - IPC B01F23/40 B01J14/00 

FIELD: various technological processes.

SUBSTANCE: invention relates to microscale flow control and can be used for production of emulsions. According to the invention, the ratio of the dynamic viscosity of the dispersed flow to the dynamic viscosity of the carrier phase is set less than 0.01 and implementing stable slug flow mode with stalling of microdrops from trailing edge of projectiles in microchannel device with hydraulic diameter of channels from 100 mcm. At that, stable operating mode is maintained by the ratio between the capillarity number built on the total average flow rate of the phases and the ratio of flow rates of the flow phases. Ratio is as follows: Q_d/Q_c = 0.015⋅(Ca_bulk)^-2, where Q_d is disperse phase flow rate; Q_c is the carrier phase flow rate; Ca_bulk is capillarity number.

EFFECT: obtaining fine emulsions by creating a stable slug flow mode with stalling of microdrops from the trailing edge of the projectile.

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