paraffin wax deposition and fouling

— 59
Temperature profiles obtained at different wax concentrations
Run c (%) Tc’ (°c) o (°c) a (°C)
lars of the runs were as follows:
results used were runs F2, Fil and F26 by Walker. The particu
the selected wall temperature be about the same as the cloud point.
that only where the temperature difference is great enough will
cooling water ternperatu?e was about 13°C. In the present runs the
the relatively high concentration of 9.6 per cent in those runs,
all cases about the same as the solution cloud point. Because of
the cloud point for runs F2, Fil and F26 respectively.
sary to give the required profiles are about 7°C, 2°C and 2°C aoove
6.2.4.3. As seen fror these figures the wail temperatures neces
Eli; Tw = 12°C, 15°C
Eli 25451 6.o 14 45.9 8.0
F 2 20819 4.2 10 47.0 9.2
F26 27123 7.9 17 46.2 6.9
The wall temperatures selected were as follows:
F 2; Tw = 8°c, io°c, 16°c
F26; Tw = 15°C, 17°C, 19°C
The results are plotted in figures 6.2.4.1, 6.2.4.2 and
6.2.4 Different Concentrations
corresponding differences were about 1°C, 6°c and 10°C. It follows
the temperature difference between the cloud point and average
and similar Reynolds numbers were investigated. The fouling studies
In the previous section the selected wall temperature was in