| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent organic matter from being mixed in condensed water of water vapor to be used in a hydrothermal treatment apparatus having a dehydration mechanism. <P>SOLUTION: An outer pipe 3 of a hydrothermal treatment apparatus body 1 includes a part in a cylindrical shape, and inside the outer pipe 3, a dehydration pipe 11 in the cylindrical shape is provided on an upper part and a space 3c capable of storing a prescribed amount of liquid more than a generation amount of condensed water is provided on a lower part. Even when the liquid such as the condensed water and separation filtrate is stored inside the outer pipe 3, the stored liquid is not brought into contact with organic sludge inside the dehydration pipe 11. After the condensed water stored at the bottom part of the outer pipe 3 is discharged, dehydration treatment is performed and the separation filtrate is separated from the organic sludge and discharged. Alternatively, in a subcritical treatment step, subcritical treatment is performed while discharging the condensed water so that the condensed water is not brought into contact with the organic sludge. <P>COPYRIGHT: (C)2013,JPO&INPIT |
