Supercritical water oxidation reactor for on-line desalination and salt elimination

Abstract

The invention discloses a supercritical water oxidation reactor for on-line desalination and salt elimination, which is characterized in that an oxidation space is arranged in a main body shell, and is used for carrying out supercritical water oxidation treatment on organic wastes; a mechanical desalting device is arranged in the oxidation space, a salt conveying device is arranged at the bottom of the oxidation space, a filtering device is arranged in the radial direction of the oxidation space, and the mechanical desalting device conducts online removal on inorganic salt in the oxidation space to prevent deposition of the inorganic salt and induction of under-scale corrosion; the filtering device is used for filtering fluid flowing out of the oxidation space, so that all inorganic salt is left in the reactor and is prevented from diffusing to important areas; inorganic salt is conveyed to the salt storage area through the salt conveying device, further reacts with the secondary oxidizing agent and is finally discharged out of the reactor through the sealed salt discharging device of the bottom conical section, and online salt discharging is achieved without shutdown.

Description

technical field [0001] The invention belongs to the technical field of organic waste treatment, and in particular relates to a supercritical water oxidation reactor for on-line desalination and demineralization. Background technique [0002] With the development of society and economy, the amount of organic waste generated in various fields has increased rapidly, but the treatment capacity of organic waste has not been greatly improved, especially the treatment capacity of organic waste containing a large amount of water and inorganic salts is even lower. . Traditional combustion, landfill, and biochemical treatment are difficult to completely degrade organic waste, and even produce leachate, SO x , NO x , dioxins and other harmful substances lead to secondary pollution of soil, air, water and other resources necessary for human survival, seriously affecting the living environment of human beings, and has become a common problem faced by human beings all over the world. ...

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Problems solved by technology

[0004] However, the solubility of inorganic salts in supercritical water is very low. When supercritical water oxidation technology treats high-salt organic wastes, inorganic salts are often precipitated in the form of crystals. If they are not treated, they will easily lead to salt deposition in pipelines. Problems such as clogging and reactor wall corrosion seriously affect the safety of the supercritical water oxidation process

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