| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for a hydrothermal reaction which can discharge solids and/or a soluble component efficiently from a reaction fluid without increasing the amount of treatment water and prevent the generation of corrosion, blocking and abrasion by the solids and an apparatus for the method. SOLUTION: A substance 3 is supplied to a reactor 1 to be subjected to a hydrothermal reaction, the reaction fluid is cooled by a cooler 17 and separated into gas and liquid by a gas-liquid separator 18, at least part of the separated liquid is taken out, while liquid with solids and/or a soluble component removed in a distillation apparatus, etc., is supplied with a neutralizing agent to the lower part or the vicinity of the outlet of the reactor 1, and the soluble component is dissolved, or the solids are dispersed.
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