High-temperature and low-temperature corrosion resistant enamel material, preparation method and application thereof and high-temperature fluidized-bed rotary grate furnace device

Abstract

The invention belongs to the technical field of solid waste incineration engineering for environmental protection and resource utilization, and particularly relates to a high-temperature and low-temperature corrosion resistant enamel material, a preparation method and application thereof and a high-temperature fluidized-bed rotary grate furnace device. The device comprises a fluidized bed, with the upper part of one side of the fluidized bed being communicated with a garbage feeder; a third combustion chamber and a rotary grate mill which are communicated with the upper part of the other sideof the fluidized bed respectively, with the rotary grate mill being positioned below the third combustion chamber and being communicated with the third combustion chamber up and down so as to reduce the content of fixed carbon in ash entering the rotary grate mill; an air preheater communicated with the upper part of one side, far away from the fluidized bed, of the third combustion chamber, withthe air preheater being provided with a flue gas post-treatment port. The fluidized section belongs to a fluidized bed, materials can be sufficiently turbulent, the fluidized section is high in temperature on the basis of the temperature of hot air, the reaction rate is increased, combustibles are quickly combusted, the residence time of flame-retardant ash residue carbon in the rotary grate millis sufficient, the ash residue carbon is reduced, and emission of harmful gas such as dioxin is eliminated.

Description

technical field [0001] The invention belongs to the technical field of solid waste incineration engineering for environmental protection and resource utilization, and specifically relates to a high- and low-temperature corrosion-resistant enamel material, its preparation method, application, and a high-temperature boiling rotary grate furnace device. Background technique [0002] my country's domestic waste has a low low calorific value and is complex and diverse. There are still many problems to be overcome in this field of technology. At present, domestic waste incineration power generation treatment devices mainly use grate furnaces. This type of furnace has several problems: 1. The grate is a fixed bed, and the material is not turbulent. The degree of turbulence is poor, and the residence time is insufficient, resulting in ash The residual carbon in the slag is high, the heat loss rate is high, and it is often "cooked", commonly known as raw ash, which is difficult to re...

AI Technical Summary

Problems solved by technology

At present, domestic waste incineration power generation treatment devices mainly use grate furnaces. This type of furnace has several problems: 1. The grate is a fixed bed, and the material is not turbulent. The degree of turbulence is poor, and the residence time is insufficient, resulting in ash The residual carbon in the slag is high, the heat loss rate is high, and it is often "cooked", commonly known as raw ash, which is difficult to recycle; 2. The oxygen utilization rate of the air is low, the residual oxygen is high, and the temperature in the furnace is not high enough, generally only up to 1000 °C , incomplete combustion, and many combustible and harmful substances; 3. Insufficient utilization of heat energy, small single-furnace treatment scale, and low power generation efficiency

The real difficulty is how the facilities in the furnace can withstand such a high temperature and corrosion intensity, which is a difficult problem that the existing technology has not overcome

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