화학공학소재연구정보센터
Erdol & Kohle Erdgas Petrochemie, Vol.47, No.11, 419-423, 1994
STUDIES ON PRESSURE GASIFICATION OF COAL WITH WATER-VAPOR AND CARBON-DIOXIDE .2 CORRELATION WITH REACTIVITY, TYPE AND CONCENTRATIONS OF INORGANIC COMPONENTS
Basing in the results of the kinetic investigations in the first part of this study, correlations were made between mean reaction rates of the gasification of coals with water vapour and carbon dioxide and the nature, content and distribution of the inorganic components of the coals. The distribution of the catalytically active components as measured by means of electronprobe-microanalyses turned out to be an essential factor of influence. In the case of brown coals, linear correlations between the gasification reactivity and the contents of calcium and iron were found both in water vapour and in carbon dioxide atmosphere. The effect of the two elements is additive and not synergistic. In the case of the higher ranking coals, optimal correlations were found exclusively with the calcium content due to the fact that iron is not finely dispersed as in brown coals. It may, therefore, be concluded that the gasification reactivity of coals even under pressure is influenced exclusively by inorganic components. Because of this fact a prediction of the reactivity is possible only on the basis of the nature, content and distribution of these components.