Several comprehensible differences mainly due to the “rank”
differences of the materials were found between the combustion
profiles of high ash coal and waste tyre samples. In general: (1)
the regions of the volatile matter combustion of waste tyre shift
to lower temperatures than the corresponding ones for coal; (2)
the temperature ranges of these regions are broader for waste
tyre than coal; and (3) these regions are more complex for waste
tyre (three or more peaks) than for coal (one peak).
For blends of coal and waste tyre, no interactions between
blend components are observed in TGs. However, for DTGs, it is
indicated that a comparatively important difference can be seen
that may be related to a certain degree of interaction between the
components. The co-combustion of coal and waste tyre cannot
be predicted from the weighted sum of the blend components.
The incorporation of waste tyre can improve the combustion
characteristics of high ash coal, especially the ignition performance
and the peak weight loss compared with the separate
burning of waste tyre and coal, which indicate that the cocombustion
of waste tyre and low quanlitied coal as fuel is
feasible.