Method for producing aqueous emulsions or suspensions

摘要

The present invention proposes a method for the production of an aqueous emulsion or suspension, wherein a hydrophobic liquid phase is brought into contact with an aqueous phase in a premixing chamber (38) to form a premix (44), said premixing chamber (38) comprising an inlet (40) from a feed line (32) for a first liquid (12) and at least one inlet (42) from a feed line (34) for at least a second liquid (14), the premix (44) being forced to leave the premixing chamber (38) through a spray element (64) with an orifice (66) therein forming the outlet (68) of the premixing chamber (38), wherein said orifice (66) is configured to spray the premix (44) in a jet (70) and produce shear or cavitation in the premix jet (70), characterized in that the hydrophobic liquid phase and the aqueous phase are fed in a discontinuous manner. The present invention further proposes an apparatus (20) for mixing a first liquid (12) and at least a second liquid (14) by producing shear and/or cavitation. The apparatus (20) may be used for the production of an aqueous emulsion or suspension.