Preparation of emulsions

Assignee: BP PLC

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Filing: 1986-09-04

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Granted: —

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Expires: 2006-09-04

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Abstract

Abstract 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.

Inventors

👤 Spencer Edwin Taylor

Bibliographic Details

Application Number —

Jurisdiction EP

Data Source google_patents

Last Synchronized 2026-10-28 03:04

CPC Classifications

B; B01; B01F; B01F23/00; B01F23/40; B01F23/41; B01F23/4105; B01F35/00; B01F35/20; B01F35/21; B01F35/2132; B01F35/80; B01F35/82; C; C10; C10L; C10L1/00; C10L1/32; C10L1/328; B01F23/414; B01F23/4141; Y; Y10; Y10S; Y10S516/00; Y10S516/924; Y10S516/928; Y10T; Y10T137/00; Y10T137/0318; Y10T137/0391

Claims Analysis

Total Claims: 5

Claim 1

Independent Claim 162 words

A continuous method for the preparation of an emulsion of oil in water of desired composition which method comprises initially preparing an HIPR emulsion of oil in water by directly mixing 70 to 98X 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 2X, 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, characterised by the fact that the conductivity of the HIPR emulsion is measured, the quantity of aqueous liquid to be added as a diluent is determined and the HIPR emulsion is diluted with the required quantity of diluent.

Claim 2

Dependent Claim 162 words

Claim 3

Dependent Claim 38 words

A method according to claim 1 wherein the initial emulsion is prepared by directly mixing 80 to 90X by volume of the viscous oil with 30 to 2X by volume of the aqueous solution of the emulsifying surfactant.

Claim 4

Independent Claim 28 words

A method according to either of the preceding claims wherein the viscous oil is a heavy crude oil having an API gravity in the range 5° to 20°.

Claim 5

Independent Claim 35 words

A method according to any of the preceding claims wherein the conductivity of the diluted emulsion is measured and compared with the desired conductivity and, if necessary, the quantity of aqueous diluent is adjusted accordingly.

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