Supercritical reaction still

Abstract

The invention discloses a supercritical reaction still. The supercritical reaction still comprises an outer barrel and an inner barrel arranged inside the outer barrel, wherein a top plate is fixedlyarranged at the upper part of the inner barrel; the top plate is detachably connected with the outer barrel in a sealing manner; an oxygen inlet and a waste water inlet communicated with the inner barrel are further formed in the top plate; an opening communicated with the outer barrel is formed in the lower part of the inner barrel; at least one salt discharge opening is formed in the bottom of the outer barrel; a salt discharge pipe communicated with the salt discharge opening is arranged at the lower part of the salt discharge opening; a water jacket is arranged around the outer side of thesalt discharge pipe; a closed cleaning cavity is formed among the water jacket, the salt discharge pipe and the outer barrel; a cleaning water inlet is formed in one side of the water jacket; a plurality of water inlet openings communicated with the cleaning cavity are further formed in the bottom of the outer barrel. According to the supercritical reaction still provided by the invention, oxide,existing in the form of salt, deposited at the bottom of the reaction still can be discharged in time, and scabs are prevented from being formed on the inner surface of the reaction still, so that normal operation of the equipment is guaranteed.

Description

technical field [0001] The invention relates to a reaction kettle in the field of oxidation organic wastewater treatment, in particular to a supercritical reaction kettle. Background technique [0002] The high-efficiency supercritical reactor is the key equipment of the wastewater treatment system. Its function is to use water as the medium in the supercritical state, and use the absence of gas-liquid interface mass transfer resistance under supercritical conditions to increase the reaction rate. The organic matter is completely oxidized under phase conditions, and the organic pollutants in the organic wastewater are oxidized into harmless CO in this equipment 2 、H 2 O and salt compounds. [0003] Supercritical water oxidation technology is a new technology that has emerged in recent years. It has a very obvious effect on the treatment of high-concentration organic wastewater. The supercritical reactor is the key equipment of the wastewater treatment system. On the one ha...

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Problems solved by technology

[0003] Supercritical water oxidation technology is a new technology that has emerged in recent years. It has a very obvious effect on the treatment of high-concentration organic wastewater. The supercritical reactor is the key equipment of the wastewater treatment system. On the one hand, it is required to be resistant to high temperature and High pressure, anti-corrosion characteristics, and in the supercritical state, because the inorganic salt is insoluble in water and precipitates, after the oxidation reaction of the supercritical reactor, the formed oxide will be deposited at the bottom of the reactor in the form of salt, so it is necessary It has the ability to discharge salt in structure. If it cannot be discharged in time, it will form scars on the inner surface of the reactor, which will affect the normal operation of the equipment.

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