Method and device for gasification of organic matter in continuous supercritical water jacketed reactor

Abstract

The invention discloses a method and a device for gasifying organic matters by using a continuous supercritical water double-tube reactor. The device comprises an inner tube and an outer shell, wherein one end of the inner tube extends into the outer shell while the other end extends out of the outer shell, and the joint is sealed; a material second inlet and a product outlet are formed in the outer shell; the inner tube and the outer shell are concentrically arranged; the two ends of the inner tube are open; the extension-in end part of the inner tube is spaced from the outer shell; an oxidation exothermic reaction area is formed in the inner tube; an annular gasifying endothermic reaction area is formed between the inner tube and the outer shell; and the extension-out end of the inner tube, extending out of the outer shell, is connected with a material first inlet, an oxidizing agent inlet and a supercritical water inlet. The reaction device couples a supercritical water oxidizing reaction process and a supercritical water gasifying reaction process; the heat of the supercritical water oxidizing exothermic process can be supplied to the gasifying endothermic process so that the temperature of the oxidizing area is easily controlled; and meanwhile, the heat supply cost of the gasifying endothermic process is reduced, and the economical efficiency of the system is improved.

Description

technical field [0001] The invention belongs to the field of clean utilization of renewable resources and waste, and in particular relates to a method and a device for gasifying organic matter in a continuous supercritical water jacket reactor. Background technique [0002] Obtain combustible gas from organic matter such as energy crops, organic waste, hazardous waste, urban sludge and fossil fuels, realize new and efficient clean utilization of these organic matters, avoid the generation of PM2.5 dust and toxic gases and liquids, and contribute to environmental protection and The development of the national economy is of great significance and is an important direction of energy development. [0003] Supercritical water refers to water whose temperature and pressure parameters are above the critical point (temperature 374°C, pressure 22.1MPa). At this time, the density of liquid water expanded due to high temperature and the density of steam compressed due to high pressure ...

AI Technical Summary

Problems solved by technology

[0006] The supercritical water oxidation process has strong corrosion on the reactor wall, and the corrosion resistance of the reactor material restricts the development of supercritical water oxidation technology

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