Collect. Czech. Chem. Commun. 1993, 58, 1885-1890

Heats of Decomposition and Equilibrium Dissociation Pressures of the Magnesian and Calcareous Compounds in Desulfurization Technologies

Miloslav Hartman, Otakar Trnka and Václav Veselý

Institute of Chemical Process Fundamentals, Academy of Sciences of the Czech Republic, 16502 Prague 6-Suchdol, Czech Republic


In processes for flue gas cleanup, several magnesian and calcareous compounds occur either as parent sorbent materials or as a reaction products. very simple predictive expressions are proposed for estimating the decomposition heats and dissociation pressures of hydroxide, carbonate, sulfite and sulfate of magnesium and calcium at different temperatures. The developed relationships are based on the thermochemical data and experimental results taken from the literature.