The dynamics of the coal matter thermal dissociation during high thermal shock
Based on the analysis of experimental data previously obtained of pulverized bituminous coal and anthracite entrained-flow gasification with a high thermal shock, it is shown that the observed effect of carbon «rapid conversion» (more than 90% in less than 0.1 s) can not be provided with the carbon reaction with CO2 and H2O, and is more likely associated with the features of the virgin coal substance thermal dissociation. Using the conception of a Gaussian distribution of the bond breaking activation energy of coal macromolecules around the value close to the dissociation energy of C-C bond in aromatic compounds, the method is developed for engineering calculating the dynamics of carbon thermal dissociation. Calculated results obtained are in agreement with the experimental ones. It is shown that this effect can significantly reduce the size of the entrained flow gas generators.