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Supercritical water oxidation reactor by using auxiliary fuel for supplying heat

A technology of supercritical water oxidation and auxiliary fuel, applied in the direction of pressure vessels used in chemical processes, methods of chemically changing substances by using atmospheric pressure, chemical instruments and methods, etc., to promote efficient mixing and combustion, ensure safe operation, The effect of improving solubility

Active Publication Date: 2012-11-28
XI AN JIAOTONG UNIV
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Problems solved by technology

[0009] The purpose of the present invention is to provide a supercritical water oxidation reactor with a new structure that utilizes auxiliary fuel as a method of replenishing reaction heat to solve the problem of energy supply in the supercritical water oxidation process, thereby improving the economical efficiency of the device operation process

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  • Supercritical water oxidation reactor by using auxiliary fuel for supplying heat

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Embodiment Construction

[0023] Such as figure 1 As shown, a supercritical water oxidation reactor using auxiliary fuel to supply heat, the end cover 15 and the kettle body 3 are combined by fastening bolts 1 to form a closed reaction space. The space between the end cover 15 and the top of the dome of the catalyst box is a high-temperature combustion zone 16, the area below the catalyst box is a salt separation zone 21, the bottom center of the kettle body is provided with a solid salt discharge port 6, and the area above it is a subcritical salt-dissolving zone 17.

[0024] The fuel core tube 12 is arranged in the center hole of the end cover along the axial direction of the end cover, and is fixed in the end cover by thread sealing. The fuel core tube is a fuel (methanol) delivery pipeline, and its lower end extends out of the end cover and reaches above the high temperature combustion zone 16. The outlet at the lower end of the fuel core tube is designed as a blind hole structure, and when the fu...

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Abstract

The invention discloses a supercritical water oxidation reactor by using an auxiliary fuel for supplying heat, the heat required for a reaction can be supplied by using the auxiliary fuel, Material, fuel and an oxidizing agent (air or oxygen) are mixed with a high efficiency through the different directional jets for raising oxidation efficiency. According to the invention, the reactor employs a combination structure of evaporation wall and pot type backflow, the reaction vessel volume is effectively used and the reaction time is increased, the blockage problem generated by salt deposition can be also prevented, the corrosion problem of the reactor is effectively reduced. The temperature of the reactor bottom can be preciously controlled through a cooling water pipeline at the reactor bottom, thereby the safe operation of equipment is guaranteed. The reactor effectively solves the economic problem of a supercritical water reaction system by using the auxiliary fuel for supplying, the invention has the advantage of easy industrial amplification, and is widely applied to organic liquid such as high density and difficult biodegradation organic waste water / garbage leachate and the like for a harmlessness processing.

Description

[0001] Field [0002] The invention belongs to the fields of environmental protection and chemical industry, and in particular relates to a supercritical water treatment reactor which uses supercritical water as a reaction medium to carry out harmless treatment of waste organic liquids such as high-concentration organic waste water / garbage leachate, which are difficult to biochemically degrade . Background technique [0003] Supercritical water refers to water in a special state whose temperature and pressure are higher than its critical point (T=374.2°C, P=22.1MPa). Supercritical water has the properties of both liquid and gaseous water, its dielectric constant is similar to that of non-polar organic solvents, and it has a high diffusion coefficient and low viscosity. In this state, organic matter and oxygen can be miscible with supercritical water in the largest proportion, so that the heterogeneous reaction becomes a homogeneous reaction, which greatly reduces the resistan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J3/04B01J3/00C02F1/72
CPCC02F1/72C02F11/086
Inventor 王树众郭洋徐东海公彦猛唐兴颖张洁
Owner XI AN JIAOTONG UNIV
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