Preparation of emulsions

B - Operations – Transporting – 01 – F

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134/50

B01F 17/00 (2006.01) B01F 3/08 (2006.01) B01F 15/04 (2006.01) C10L 1/32 (2006.01)

Patent

CA 1273261

ABSTRACT OF THE DISCLOSURE PREPARATION OF EMULSIONS A continuous method for the preparation of an emulsion of oil in water of desired composition is disclosed which method comprises initially preparing an HIPR emulsion of oil in water by directly mixing 70 to 98% by volume of a viscous oil having a viscosity in the range 200 to 250,000 mPa.s at the mixing temperature with 30 to 2%, by volume of an aqueous solution of an emulsifying surfactant or an alkali, percentages being expressed as percentages by volume of the total mixture; mixing being effected under low shear conditions in the range 10 to 1,000 reciprocal seconds in such manner that an emulsion is formed comprising distorted oil droplets having mean droplet diameters in the range 2 to 50 micron separated by aqueous films. The conductivity of the HIPR emulsion is then measured, the quantity of aqueous liquid to be added as diluent is determined and the HIPR emulsion is diluted with the required quantity of diluent.

517407

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