Table 3 Coking behavior of wash oils and their fractions.
From: Kinetic analysis and comparison of the coking behavior of coal Tar oil
Fraction of wash oil (%) | Light oil | Heavy oil | ||
|---|---|---|---|---|
Yield (% wt.) | Coke residue yield (% wt.) | Yield (% wt.) | Coke residue yield (% wt.) | |
Oil (fresh) | 0.5 | 0.2 | ||
Oil (fresh) + 6% tar | 2.4 | 1.9 | ||
Oil (operating) | 7.1 | 6.2 | ||
Oil (operating) + 6% tar | 9.0 | 7.3 | ||
Distillates of spent oils | ||||
< 250 °C | 8 | 2.0 | 1 | 1.5 |
250–270 °C | 37 | 1.9 | 29 | 1.3 |
270–310 °C | 20 | 2.6 | 59 | 1.5 |
> 310 °C | 34 | – | 11 | – |
