Separation principles part 4

For part one of separation principles click here.

For part two of separation principles click here.

 For part three of separation principles click here.

Next thing is, something related to electricity. Yes, we can use electricity to separate fluids, because different fluids have different different electrical properties. So, based upon their electric behaviour, we can use electricity for separation of fluids.

First property which differs is, electric conductivity. We all know that formation water which come along with oil is brine water, and brine is conductive to electricity. And crude oil is not that much conductive in nature, and gas is very very poor in conductivity.

So,

Conductivity vice,

Gas<oil<brine and pure.

(Gas has very less amount of free ions).

brine water (we all know after great ranchhod das of 3 idiot).

So, if we apply current to mixture of fluid, then it will pass through water. (Current will find least resistant path to flow, because he is lazy).

So, what we do is, we prepare, fluid packed system ( it means full vessel is contained with fluid) and then pass current through it.

After passing current, water drop starts to polarize. So, they show positive and negative charges on both sides. (Like dipoles).

Now, what do you think ? Which current will be better suited for this separators ? AC or DC ?

We apply Alternative Current (AC) to fluid system, so it will start increasing polarizing water molecules then it will give relaxation to them, then it will again start polarization with direction altered, and then again relaxation.

So, it will will initiate movements of water molecules and softens the water molecules to coalescence freely. After coalescence, they will fall freely. And water will be separated out from emulsion or crude oil.

We remove water from below and oil from upwards.

Oil or emulsion level control is critical for this type of separators.

Gas must be not present in fluid packed vessel, while separating with electricity.

This kind of treatment is used in electrostatic emulsion treater generally. To generate fluid packed system in emulsion treater, they use another section inside treater which separate and went off gas from liquid before fluid packed system.

  

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