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 t he gasification of coals with water vapour and carbon dioxide and the nature, content and distribution of the inorganic components of the co als. The distribution of the catalytically active components as measur ed by means of electronprobe-microanalyses turned out to be an essenti al factor of influence. In the case of brown coals, linear correlation s 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 th e case of the higher ranking coals, optimal correlations were found ex clusively with the calcium content due to the fact that iron is not fi nely dispersed as in brown coals. It may, therefore, be concluded that the gasification reactivity of coals even under pressure is influence d exclusively by inorganic components. Because of this fact a predicti on of the reactivity is possible only on the basis of the nature, cont ent and distribution of these components.