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The de-emulsification of water-in-oil emulsion of Ogharefe crude oil sample was studied by using formulated polyester based de-emulsifier sample A and a commercially available de-emulsifier sample C. The bottle test method was used to screen the de-emulsifier samples using the crude oil emulsion. The performance of the de-emulsifiers was expressed in terms of percentage of water separated from 100 ml samples of emulsions. For both the formulated and commercial deemulsifiers, the performance increased with increased concentration of the de-emulsifiers, separation time and operating temperature. The effect of the operating temperature was much higher and there was a linear relationship (R2 ranging from 0.96 to 0.99) between performance and temperature.The performance of the best of the formulated de-emulsifiers, sample A, was better than that of the commercial de-emulsifier under all the conditions of this study- the volume of water expelled by sample A was 5 times that of the commercial one at 30oC. At 70oC, this ratio increased to 14.

american journal of scientific and industrial research

Performance evaluation of formulated de-emulsifier samples and a commercially available sample in the de-emulsification of a Nigerian crude oil emulsion