Clay and sand fines reduced the permeability of sand packs in combustion tube experiments and also provided a large reaction surface area. Consequently, residual oil saturation and hence fuel concentration increased, resulting in high-temperature oxidation (HTO). In contrast, low-temperature oxidation (LTO) resulted from low fuel concentration.
A combustion front temperature of 500 C (932 F) was obtained for HTO runs, compared to only 350 C (662 F) for the LTO run. Duri… Show more
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