TEMPERATURE-VARIATIONS IN DRYING OF SULFURIC-ACID-SOLUTIONS IN SAND BEDS .2. TEMPERATURE-VARIATIONS IN THE BED DURING THE DRYING OF WATER-SULFURIC ACID MIXTURES

Temperature distributions were used to explain the drying behavior of sulfuric acid solutions in packed sand beds in this part of the invest igation. Temperature of the acid solutions in free evaporation are exp ected to increase during drying due to the decrease in heal capacity w ith increase in concentration. Deviations of concentration from those expected from the solution temperatures were attributed to the effects of the convective motion induced by the increase of density and surfa ce tension of the acid solutions. These effects were found to be super imposed on the temperature variations in porous beds determined in the first part of this paper[1].