Supercritical water oxidation evaporation wall type reactor

Abstract

The invention discloses a supercritical water oxidation evaporation wall type reactor, and relates to the field of supercritical water oxidation reactors. The evaporation wall type reactor comprises acylinder body and a cylinder cover; a material inlet, an oxidant inlet and a reaction cavity are formed in the cylinder cover; the reaction cavity is positioned below the material inlet and the oxidant inlet; a porous evaporation wall is arranged in the cylinder body; an upper evaporation wall water inlet, a middle evaporation wall water inlet and a lower evaporation wall water inlet are formed in the side surface of the cylinder body; and an upper throttling ring, a middle throttling ring and a lower throttling ring are respectively arranged below the upper evaporation wall water inlet, themiddle evaporation wall water inlet and the lower evaporation wall water inlet, and are positioned in an annular gap formed by the inner wall of the cylinder body and the porous evaporation wall. According to the evaporation wall type reactor, the treatment capacity of organic matters can be improved, the functions of the evaporation wall type reactor in the aspects of corrosion resistance and salt deposition are better played, and the evaporation wall type reactor has guiding significance in promoting structure development and process optimization of the evaporation wall type reactor.

Description

technical field [0001] The invention relates to the field of supercritical water oxidation reactors, in particular to a supercritical water oxidation evaporation wall reactor. Background technique [0002] Supercritical water oxidation technology is an efficient method for treating pollutants and refractory organic compounds, which can realize complete oxidation of organic matter without secondary pollution. However, due to the extremely low solubility of inorganic salts in supercritical water, the inorganic salts are easily precipitated, aggregated, and deposited in large quantities, causing adverse effects. The precipitated inorganic salts are easily adsorbed on the heating surface and the inner wall of the reactor to form a salt layer, which leads to the deterioration of heat transfer. Secondly, a corrosion microenvironment "dead zone" will be formed between the salt layer and the heating wall surface. Salt deposition has a synergistic effect on corrosion, and the precipi...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a supercritical water oxidation evaporation wall reactor to solve the deficiencies in the design of the existing evaporation wall reactor, so that the evaporation wall reactor can form an excellent water film in the process of water oxidation

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