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Old   February 11, 2014, 14:26
Question Demulsification water/oil
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Gustavo Navas
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Hi everybody.

Does anyone tried a simulation in CFX to represent the efect of adding a chemical demulsifier to desestabilize a water in oil emulsion? How did go?

Any information would be very helpful.

Thanks!
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Old   February 11, 2014, 17:17
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Glenn Horrocks
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What particular part of the effect do you want to model? You can model this at many different levels.
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Old   February 14, 2014, 17:30
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Gustavo Navas
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Thanks so much for the answer.

I need to represent the effect of add a surfactant agente (demulsifier) in the water in oil (W/O) emulsion. In the theory the demulsifier displaces the surfactant contained by crude oil around the water droplet, that leads to a water droplets coalescence and a subsequent separation of the water.

This phenomenon does not implies chemical reaction, it's a physical separation.

Could CFX represent this phenomenon somehow? How could do it?

PD: Here is a brief explanation of the phenomenon (http://petrowiki.org/Oil_demulsification)
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Old   February 14, 2014, 19:14
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Glenn Horrocks
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CFX does not have a built in demulsification model to my knowledge, but you might be able to adapt existing models or develop a new one (using CEL, additional variables and whatever else is required).

You can model the chemicals as multi-component mixtures, and the different phases as a multi phase model. As long as you know all the mechanisms taking place you have a chance of modelling it.
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Old   Yesterday, 23:27
Default The demulsifier
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Alice He
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We are a professional manufacturer of the demulsifier in China, if you like, we can provide you the sample for your test!
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