Gas-liquid mixing device for supercritical hydrothermal combustion reactor and application thereof

Abstract

The invention discloses a 'gas-liquid mixing device for a supercritical hydrothermal combustion reactor and application thereof', and belongs to supercritical hydrothermal combustion technologies. Thegas-liquid mixing device comprises a cylindrical pipe (12), and is characterized in that a fuel guiding pipe (1-1), a first oxidizing agent guiding pipe (2-1) and a material guiding pipe (3-1) are arranged in the cylindrical pipe (12), wherein the fuel guiding pipe (1-1), a first oxidizing agent guiding pipe (2-1) and the material guiding pipe (3-1) are mutually independent; a combustion chamber(06) is formed into an inner cavity in the lower portion of the cylindrical pipe (12); the fuel guiding pipe (1-1) is arranged in the center of the cylindrical pipe (12), a fuel atomizing nozzle (05)is arranged at the lower end of the fuel guiding pipe (1-1), and a nozzle outlet faces the combustion chamber (06); the lower end of the first oxidizing agent guiding pipe (2-1) faces the combustion chamber (06), and a material entering the material guiding pipe (3-1) and the combustion chamber (06) can be subjected to heat exchange; a feeding atomizing nozzle (07) is arranged at the bottom end ofthe material guiding pipe (3-1).

Description

technical field [0001] The invention relates to supercritical hydrothermal combustion technology, in particular to a gas-liquid mixing device for a supercritical hydrothermal combustion reactor and its application Background technique [0002] Supercritical water oxidation is to use the characteristics of supercritical water under the conditions of temperature and pressure higher than the critical temperature (374.2°C) and critical pressure (22.05MPa) of water, so that organic matter can be converted into water under the homogeneous condition of supercritical water. , Oxidation reactions in which carbon dioxide is the main product. During the supercritical water oxidation reaction, carbon-based organic matter is completely oxidized into carbon dioxide and water, and organic compounds containing nitrogen are oxidized into N 2 , N 2 O and other harmless substances, halogen atoms are converted into halide ions, and sulfur and phosphorus are converted into salts such as sulfat...

AI Technical Summary

Problems solved by technology

Although the supercritical water oxidation reactor itself can adopt methods such as permeating the wall for effective anticorrosion, since the reaction can only start under supercritical conditions, it is necessary to preheat the material to the supercritical state in advance, making it easy to cause corrosion in the pipeline and heat exchanger. Problems such as carbon precipitation, coking and salt deposition, etc., will lead to heat transfer deterioration and blockage, causing safety accidents

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