crude oil emulsion 1
TRANSCRIPT
Stabilization and Destabilization of Crude Oil Emulsion
Haris Ramzan
Mechanical Engineer
Nazeer Hussain University
Type of Emulsions
O/W W/O
Water
Oil
Stabilization of emulsions
Surfactant
•Decreasing interfacial
Tension
•Formation of interfacial
film
Oil
Water
Interfacial film stabilization
Polymer•Adsorbing on oil
droplet surface
Oil
Water
Steric stabilization
Particles•Adsorbing on oil or
water droplet surface
Steric stabilization
Oil
water
Liquid crystalFormation on the interface
between oil and water
Oil
Water
Electric double layer stabilization
Ionic surfactant, polymer and solid particles
•Adsorbing on
oil droplet surface
Breaking of emulsions
Flocculation
Coalescence
Emulsion
Sedimentation (creaming)
Oil
Water
Liquid
Interfacial film
Breaking of the interfacial film is a key process of break of emulsions
Stabilization of crude emulsions
Asphaltene•Formation of interfacial film
•Particles adsorbed on the interface
•Increasing viscosity of crude oil
Resin•Formation of interfacial film
•Increasing viscosity of crude oil
Wax•Particles adsorbed on the interface
•Increasing viscosity of crude oil
Detabilization of crude emulsions
Heating•Decreasing viscosity of crude oil;
•Increasing density difference of
crude and water;
Addition of demulsifiers•Breaking of interfacial film
Applying of electric field•Breaking of interfacial film•Promote of coalescence of water droplets
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