The process for oxidative decomposition of wastewater containing organic material by supercritical conditions

摘要

The waste fluid to the present invention is a directed to a process for the oxidative decomposition of the organic substance-containing waste liquid, and more particularly, organic matter oxidative decomposition process of the substance-containing waste liquid using the supercritical water oxidation process, to prevent the corrosion which occurs in the pre-heating process of the organic substance-containing waste liquid adding a neutralizing agent to the preheated oxygen-free conditions; Oh the preheated waste liquid in the critical temperature using an oxidizing agent and neutralizing agent and the auxiliary heat source to second threshold rises rapidly to a temperature and a preheated mixer to prevent corrosion and mineral substance precipitating; An outlet temperature of the preheated mixer to prevent corrosion of the reactor inlet is maintained supercritical temperature and; In order to prevent clogging due to the inorganic material precipitated it is provided with a reactor having a fast line speed; In process water cooling process of being discharged in more than 450 ℃ temperature corrosion and supercritical heat exchanger and Oh is the quenched mixture comprising an intermediate 300 to 374 ℃ region of the critical heat exchanger supercritical water oxidation process in order to prevent the inorganic material precipitated It relates to an organic substance-containing waste liquid by oxidation decomposition process. The present invention is a corrosion and mineral material was over 374 ℃ second sharply rises to the critical temperature without the precipitation reactor the organic substance-containing waste liquid to be preheated in oxygen-free conditions to less than 350 ℃ using a preheated mixer to prevent corrosion and mineral substances to precipitate injection by aerobic under ah minimize corrosion enabled section of the critical conditions to prevent corrosion and inorganic material deposited in the reactor inlet, and to prevent corrosion and inorganic material deposited in the treated water cooling process in the cooling mixer is installed supercritical water oxidation It was securing long-term stable operation of the process. ; Supercritical water, oxidative decomposition, an organic waste water, corrosion resistant material, an inorganic material precipitated