During electrical desalting of crude oil, the electrical conductivity of a mixture of crude oil and water (which ranges between 3 to 8% water) ________________ with increase in the amount of water?
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Answer: B. Increases
Explanation
Increasing the water content in the crude-water emulsion increases its electrical conductivity. Water droplets act as conductive pathways suspended within the continuous insulating oil medium. Higher water concentrations facilitate current flow until phase inversion occurs in the mixture. Electrical desalting uses high-voltage electrostatic fields to coalesce and separate salty water. Emulsions containing three to eight percent water exhibit conductive properties proportional to water volume. Conductivity measurements help operators monitor emulsion stability inside electrostatic desalters.
Desalting crude oil prevents downstream equipment corrosion, fouling, and catalyst poisoning. Understanding emulsion conductivity is essential for designing effective electrostatic grid systems. Operators adjust electric field strengths based on the conductivity of incoming crude feeds. Decreases is incorrect because water is a conductive medium that raises emulsion conductivity. Remains unchanged ignores the fundamental physics of aqueous droplet suspension in crude oil. Decreases linearly contradicts the direct relationship between water concentration and conductivity.
- Subject
- Engineering
- Category
- Chemical Engineering
- Topic
- —
- Difficulty
- medium
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