Behavior and control of inorganic salts in supercritical water treatment systems

用连续式反应器研究了各种无机盐(阳离子=钠、钾、钙、镁；阴离子=氯、硫酸盐、碳酸盐、硝酸盐、磷酸盐)在超临界水中的行为。通过在400-500℃，25 Mpa的超临界水条件下的实验，观察到几种盐在钛颗粒表面形成针状晶体，根据显微分析和元素分析的结果，该晶体为钛酸酯。此外，还阐明了无机盐在超临界水中的行为，如阴离子的还原。

Behavior of various types of inorganic salts (cation = sodium, potassium, calcium, magnesium; anion = chloride, sulfate, carbonate, nitrate, phosphate) in supercritical water was investigated by using a continuous-type reactor. Through the experiments at supercritical water conditions of 400 - 500 degree Centigrade and 25 MPa, formation of needle-type crystals, that is considered as titanates based on the results of microscopic and elemental analyses, on the surface of titanium particles was observed for several kinds of salts. Additionally, behavior of inorganic salts in supercritical water, such as reduction of anions, was elucidated.