| 摘要 |
<p>PROBLEM TO BE SOLVED: To improve thermal performance, to avoid corrosion of a pressure- resistant part, to decrease adhesion of scales and to reduce cost. SOLUTION: A high pressure reactor consists of a pressure-resistant container 1 consisting of an outer cylinder 1a and lids 1b and 1c and provided with inlets and outlets 5-9, an intermediate cylinder 2, an inner cylinder 3, a sealing material 4 for a gap 12, or the like. In this apparatus, a high pressure water is fed from a water inlet 5 and a liq. after reaction is cooled in a cooling part 13 and it is discharged from a water outlet 6 and it is heated again in a heating tool 22 and oxygen is fed and the high pressure water at the supercritical temp. is fed into a reaction part 11 from a water refeeding inlet and, at the same time, waste liq., or the like, is fed and oxidative reaction is performed to decompose hardly decomposable org. substances, or the like, under supercritical environment. It is possible to obtain a long cooling part 13 and good recovering rate of heat of reaction, to avoid corrosion of the outer cylinder as the waste water does not enter into the outside flow path 10, to be unnecessary to use a highly corrosion-resistant material, to cool and liquify a fluid after reaction, to adsorb and dissolve scale ingredient and to take out it to the outside and to decrease adhesion of the scale on the intermediate cylinder 2.</p> |
