Fixed bed continuous upper suction gasification furnace for waste disposal

Abstract

The invention discloses a fixed bed continuous upper suction gasification furnace for waste disposal. The fixed bed continuous upper suction gasification furnace comprises a furnace body, a dispersion frame is installed inside the furnace body, an exhaust port is formed in the top end of the furnace body, a storage bin is installed at the bottom end of the furnace body, and a feeding pipe is installed on the side surface of the furnace body. A new process of low temperature pyrolysis incineration is adopted, garbage is dried, pyrolyzed and combusted in the furnace at low temperature, so that the defects caused by high-temperature combustion are avoided, the garbage is fully combusted, heat energy is fully utilized, non-smelting slag such as non-combustible ash content can reach a higher combustion efficiency through a novel structure of the furnace on the basis of fully restraining generation of harmful substances such as dioxin, polycyclic hydrocarbon, aldehydes and carbon dioxide, iron products can be conveniently collected and prevented from entering the interior of the furnace body through arranged magnetic bars, and larger residues can be conveniently discharged through arrangement of a adjustable grate frame structure.

Description

technical field [0001] The invention relates to the technical field of gasification furnaces, in particular to a fixed-bed continuous up-suction gasification furnace for waste treatment. Background technique [0002] Commonly used waste incinerators generally use high-temperature combustion, which can not only improve the efficiency of the incinerator, but also decompose harmful gases such as dioxin at high temperature for harmless treatment. [0003] However, due to high-temperature combustion, the burning time of garbage in the furnace becomes shorter, and the following disadvantages appear: [0004] First of all, due to high-temperature combustion, thermal radiation, heat convection and other heat exchanges are improved, and at the same time, a considerable part of the available combustible substances and combustible gases are directly incinerated without being used, thereby reducing the utilization rate of heat energy. At the same time, in order to achieve full combusti...

AI Technical Summary

Problems solved by technology

Causes an increase in the cost of subsequent flue gas purification

[0005]Secondly, due to the high-temperature combustion, the ash, metal and other non-combustible substances of the garbage are in a molten state, and slagging occurs during the cooling process, and sometimes the volume is large, resulting in discharge The slag is difficult, and the slag breaking mechanism must be added, which increases the complexity of the furnace and increases the cost of manufacturing and using the furnace

At the same time, due to high-temperature incineration and short incineration time, the slag is still mixed with unburned combustible substances, which increases the difficulty of harmless treatment of the slag in the later stage

[0006]Furthermore, different wastes have different combustion characteristics and requirements, so to maintain high-temperature combustion, there are different requirements for the structure and process parameters of the furnace, which narrows the The scope of application of the furnace

[0007]At the same time, because most of the waste contains iron products, it cannot be gasified, but the feed end of the current gasifier lacks these iron products The results collected, and most of the current grate frames are fixed structures, which cannot discharge the larger residues, so that they cannot meet the needs of people.

Images