Burn-out ratio theory study of petroleum coke combustion in suspension
In order to research the relationship between burn-out ratio and combustion factors, through analyzing the process of petroleum coke combustion, and proposing some reasonable hypotheses, the physical model was built based on the shrinking core model of gas-solid combustion reaction in suspension. According to the mass action law, the diffusion theory and Arrhenius law, the relationship between the burn-out ratio and combustion factors (residence time, combustion temperature, particle size and oxygen concentration) was derived. The quantitative regulation of burn-out ratio with various factors was studied by theory calculation. The results show that burn-out ratio increases with the increase of time, temperature and oxygen volume fraction, while it decreases with the increase of particle size. The change rate of burn-out ratio decreases as time, oxygen volume fraction, and particle size increases, while it increases at the earlier time and then decreases as combustion temperature increases.
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万方数据
维普
