Oxidation processing method, and apparatus and process vessel using the method

摘要

Substances to be processed and hydrogen peroxide aqueous solution are enclosed in a process vessel, and the process vessel (1) is enclosed in an autoclave (4) together with water. Oxidation processing of the substances is performed by changing the state in the autoclave (4) and the process vessel (1) to a supercritical state which is realized by heating an outer wall of the autoclave with a heater. Further, even if the substances leak from the process vessel (1), it is prevented by oxidizing the leaking substances in the autoclave that the substances leak to the outside of an oxidation processing apparatus including the process vessel (1) and the autoclave (4).