An oxygen-deficient negative pressure gas furnace and its application method

Abstract

The invention discloses an anoxic negative pressure gas-fired furnace, comprising an outer furnace wall and an inner furnace wall which are arranged coaxially, wherein the bottoms of the inner furnace wall and the outer furnace wall are positioned on the same horizontal line, the top of the inner furnace wall is lower than that of the outer furnace wall, a slag discharge passage is formed between the inner furnace wall and the outer furnace wall, a burning zone and a reducing zone are sequentially distributed inside the inner furnace wall from bottom to top, the bottom of the burning zone is in contact with a periodic feeding tray, the top of the burning zone is in contact with the bottom of the reducing zone, and the top of the reducing zone passes through a gas zone and then is communicated with a gas pipe. When the gas-fired furnace is used, materials are fed from the top of the gas-fired furnace and ignited, air is extracted to obtain a closed and negative-pressure operating environment, then the materials are driven to continuously ascend along the burning zone and the reducing zone, and gas generated in the reducing zone flows into the gas pipe through the gas zone in the ascending process. The gas-fired furnace has the advantages that much combustible gas is generated, no dioxin is produced and slag is easy to discharge.

Description

technical field [0001] The present invention relates to a kind of urban garbage processing equipment, especially to an anoxic negative pressure gas furnace and its use method, which is especially suitable for burning urban garbage under high temperature and anoxic conditions to generate a large amount of combustible mixed gas without dioxins. Harmful pollutants are produced. Background technique [0002] Internationally, the treatment of urban waste is generally different according to the national conditions. Often, different regions in a country also adopt different treatment methods. It is difficult to have a unified model, but in the end it is all based on harmlessness, reduction, and resource utilization. Treatment objectives, from the perspective of applied technology, mainly include landfill, incineration, composting, comprehensive utilization and other methods. Today, with the increasing urbanization of our country, the consumption of residents and the amount of garb...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the defects and problems existing in the prior art that cannot simultaneously generate more combustible gases, produce no dioxins, and easily remove slag, and provide an Oxygen-deficient negative-pressure gas furnace that produces British slag and is easy to remove and its use method

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