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Household waste incineration fly ash melting harmless co-treatment system

A domestic waste incineration and co-processing technology, which is applied in the direction of incinerators, gasification processes, combustion methods, etc., can solve problems such as high energy consumption, incomplete detoxification, and limited disposal volume, so as to enhance the degree of turbulence and improve the quality of waste Effect of burnout rate, savings on management and operating costs

Pending Publication Date: 2021-11-23
东方电气集团科学技术研究院有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] It can be seen that the current waste incineration fly ash disposal methods have problems such as incomplete detoxification, limited disposal capacity, high energy consumption, and long-term safe and stable operation.

Method used

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  • Household waste incineration fly ash melting harmless co-treatment system
  • Household waste incineration fly ash melting harmless co-treatment system
  • Household waste incineration fly ash melting harmless co-treatment system

Examples

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Effect test

Embodiment 1

[0035] Such as figure 1 As shown, a system for harmless co-processing of domestic waste incineration fly ash melting and co-processing provided in this embodiment includes a waste incineration subsystem and a waste fly ash gasification melting harmless disposal subsystem. The waste incineration subsystem will collect The fly ash is transported to the garbage fly ash gasification melting harmless disposal subsystem for gasification melting harmless treatment.

[0036] The waste incineration subsystem includes a waste pretreatment unit, a waste incinerator, a waste heat boiler, a power generation unit, an exhaust gas purification unit, a smoke exhaust system, a fly ash collection unit, and a slag collection system.

[0037] The waste fly ash gasification melting harmless disposal subsystem includes: a fly ash bin, a carbon-based raw material bin, a binder bin, a garbage fly ash molding unit, a hot melting gasifier and a glassy slag collection unit. Among them, the fly ash bin i...

Embodiment 2

[0053] On the basis of Example 1, the thermal melting gasifier can be a lump coal slag gasifier.

[0054] When the lump coal slag gasifier is used, the molded fly ash fuel is sent into the furnace from the top of the lump coal slag gasifier, and a 3-6 meter gasification bed material layer is established, and the gasification agent is introduced at the same time. Through a number of gasification agent inlets distributed around the furnace body of the lump coal slag gasification furnace, it enters the furnace, and the gasification agent and fly ash fuel undergo redox reactions.

[0055] The gasification agent is divided into pure oxygen / air and water vapor / carbon dioxide, which are respectively fed into the hot melting gasifier through two pipelines.

[0056] The lump coal slag gasifier is mainly composed of a gasification chamber, a slag chamber, a combustion short and a slag quenching chamber. Redox reactions occur in the gasification chamber, and the reaction temperature in t...

Embodiment 3

[0058] On the basis of Example 1, the hot melting gasifier can be a plasma hot melting furnace.

[0059] When a plasma melting furnace is used, the molded fly ash fuel is fed into the furnace from the top of the plasma melting furnace, and a 2-4 meter gasification bed material layer is established. Oxidation-reduction reaction with fly ash fuel.

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Abstract

The invention discloses a household waste incineration fly ash melting harmless co-treatment system which comprises a waste incineration subsystem and a waste fly ash gasification melting harmless treatment subsystem. The waste incineration subsystem conveys collected fly ash to the waste fly ash gasification melting harmless treatment subsystem for gasification melting harmless treatment. Fly ash and a carbon-based fuel form a formed fly ash fuel, the formed fly ash fuel is subjected to an oxidation-reduction reaction through a hot melting gasification furnace to generate fuel gas mainly containing CO and H2 and liquid molten ash residues, and the high-temperature fuel gas is introduced into the waste incineration subsystem as supplementary fuel, so that the fly ash is treated in a harmless mode and recycled in situ, the management and operation cost brought by waste incineration fly ash transfer or chelating landfill is greatly saved, and the operation income of a waste incineration power plant is improved.

Description

technical field [0001] The invention relates to a harmless treatment technology for domestic waste incineration fly ash, in particular to a harmless co-processing system for domestic waste incineration fly ash fusion. Background technique [0002] With the rapid development of my country's social economy, the acceleration of urbanization and the rapid improvement of people's living standards, the discharge of municipal solid waste is increasing year by year. Municipal solid waste not only occupies a large amount of land, destroys the urban landscape, but also causes continuous pollution to the environment on which human beings depend, and then poses a threat to human health. Hazardization and resource utilization are the principles for comprehensively solving municipal solid waste. There are three ways to deal with domestic waste in my country: composting, landfill and incineration. Since incineration can minimize land occupation and the harmful organic substances in the wa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C6/10C03B5/00C04B14/22F23G5/00F23G5/027F23G5/46F23G5/50C10L5/46C10L5/48C10J3/02
CPCC03C1/002C03B5/005C04B14/22F23G5/006F23G5/027F23G5/46F23G5/50C10L5/46C10L5/48C10J3/02C10J2300/0946Y02E50/30Y02E20/12Y02E50/10Y02P20/129Y02P40/50
Inventor 刘四威郑西欧王毅唐万金朱鼎楚灼夫杨纯桂春辉徐莹璐陈慧吴家桦
Owner 东方电气集团科学技术研究院有限公司
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