Chapter 5
Figure 5.16 shows bar diagrams of residual water content in oil layer using
200 ppm demulsifiers. The dashed line shows desired diluted bitumen residual
water content criteria (2.0%). Residual water content in oil layer with N/В ratio 4.0
is lower than that with N/В ratio 0.7. At N/В ratio 4.0, residual water content in oil
layer is close to desired diluted bitumen residual water content criteria (2.0%).
6
4
2
200 ppm Demulsifier
i !Water on top oil layer
Water in middle oil layer
Water at bottom oil layer
200 ppm Demulsifier
N/В ratio 4.0
Figure 5.16 Water content in oil layer (solids-free) adding 200 ppm demulsifiers
N/В ratio 0.7
Figure 5.17 shows the photographs of brine in diluted bitumen (dilution ratios
0.7 and 4.0) 24 h emulsion samples adding 200 ppm PR1 to PR6 at 80 0C. The
first sample is emulsion without any demulsifier as control. The second to the
seventh are emulsion adding 200 ppm PR1 to PR6. The pH of the brine is 8.3. The
positions of sampling water/ solid conten and solid distribution measurement are
also shown in the figure. Based on bottle test, for both dilution ratios 0.7 and 4.0,
emulsion samples adding 200 ppm PR3 to PR6 have better separation results than
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