A forced ignition type supercritical hydrothermal combustion device

Abstract

A forced ignition type supercritical hydrothermal combustion device, including a main shell and a top end cover, a partition block is installed in the main shell, and the interior is divided into the main combustion space above and the mixing space below, and the top end cover is equipped with a first-stage Fuel inlet, oxidant inlet and secondary fuel inlet, the top end cover is provided with a high temperature ignition rod sleeve, the high temperature ignition rod sleeve is equipped with a high temperature ignition rod, the primary fuel inlet is connected to the high temperature ignition rod sleeve; the bottom of the top end cover Install the combustion sleeve, the high-temperature ignition rod extends into the combustion sleeve, the top of the combustion sleeve is connected to the high-temperature ignition rod sleeve and the oxidant inlet, and the bottom is connected to the main combustion space, forming a stable combustion space in the combustion sleeve; the secondary fuel The inlet and the secondary oxidant inlet are connected to the main combustion space. The invention realizes the cold-state graded injection of materials, the forced ignition of fuel with a small flow rate, the self-ignition and ignition of a fuel with a large flow rate, and the cooling and constant temperature of the device wall surface, which can realize supercritical hydrothermal combustion to generate multiple components. hot fluid or dispose of organic waste.

Description

technical field [0001] The invention belongs to the technical field of supercritical hydrothermal combustion, in particular to a forced ignition type supercritical hydrothermal combustion device. Background technique [0002] The clean and efficient disposal of organic waste is a major challenge for the sustainable development of human society. The traditional methods of dealing with organic waste include landfill and incineration. However, landfill will not only occupy a large amount of land resources, but also produce leachate to pollute groundwater, and even generate biogas to cause explosions; direct incineration of organic waste will produce dioxins Yinghe SO 2 and other harmful gases, causing great harm to the natural environment and human health. Supercritical water oxidation technology utilizes supercritical water (T≥374.15℃ and p≥22.12MPa) to dissolve organic wastes and oxidants at the same time, and oxidize organic wastes in a homogeneous environment. Since the ...

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Problems solved by technology

[0004] However, most of the current supercritical hydrothermal combustion reactors adopt thermal autoignition and ignition. During the ignition process, the fuel and oxidant need to be heated to a higher temperature before entering the reactor, which increases the risk of fuel precipitation at the reactor inlet. Salt, clogged reactor, possibility of misfire

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