| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a means which reduces the amount of water discharged when dissolving salt into subcritical water by forming a subcritical water region on the lower part of a vertical reactor for performing supercritical hydration and prevents the discharge of strongly acidic discharged water from the subcritical water region of the vertical reactor from corroding a pressure reducing valve and a discharge piping or exerting adverse influence on the environment. <P>SOLUTION: In the supercritical hydration method, the supercritical water region of the upper side whose temperature and pressure exceed the critical temperature and critical pressure of water and the subcritical water region of the lower side whose temperature and pressure are less than the critical temperature and critical pressure of water are formed inside the vertical reactor, fluid which contains inorganic salt, organic material and oxidant is supplied to the supercritical water region, thereby, the supplied organic material is decomposed by the supercritical hydration, the treated fluid containing decomposition products is discharged from the upper side of the supercritical water region and, salts produced by the decomposition of the organic material are dissolved into water for salt dissolution in the subcritical water region and is discharged as the discharged water from the subcritical water region. Therein, a neutralizer solution is supplied to the lower part of the vertical reactor. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
