Argonne National Laboratory Reports

The condensation temperatures of sodium and potassium sulfates from typical fuel-oil combustion gases were calculated as functions of the concentrations of SO2, HCl, NaCl and O2, and total combustion pressures ranging from 1 to 10 atm. Of these components, oxygen had the greatest effect on the condensation temperature of sodium sulfate, producing an increase of as much as 280 degrees K at 10 atm. Alkali sulfate activities were least affected by sulfur dioxide, tested in the range from 93 to 270 ppM. The order of the effect on the alkali sulfates was as follows: O2 > HCl > NaCl > SO2. With the addition of K2CO3, such as would occur in the magnetohydrodynamic (MHD) environment, the activity of potassium sulfate overshadowed that of sodium sulfate. The control of the activities of alkali sulfates is discussed in terms of the concentrations of the above-mentioned species and of the system pressure