Solubility in the Na_2CO_3 + NaHCO_3 + Na_2SO_4 + NaCl + H_2O System and Its Subsystems at 150 deg C

摘要

An apparatus was developed to determine the solubility of salts in water at high temepratures. The phase equilibrium data for hte ternary systems NaHCO_3 + NaCl + H_2O and NaHCO_3 + Na_2SO_4 + H_2O, the quaternary systems Na_2CO_3 + NaHCO_3 + Na_2SO_4 + H_2O, Na_2CO_3 + NaHCO_3 + NaCl + H_2O, and NaHCO_3 + Na_2SO_4 + NaCl + H_2O, and the five-component system Na_2CO_3 + NaHCO_3 + Na_2SO_4 + NaCl + H_2O at 150deg C were measured. Combined with the results of the previous investigations, the phase diagrams of these systems are plotted, and the analyses and discussions are made on the construction of the crystalline areas in these phase diagrams.