System and method of disposing stale garbage in landfill

Abstract

The invention discloses a system and method of disposing stale garbage in a landfill. The system is characterized by comprising an incinerator, a 3T+E regulation and control device, an oxygen supply device, an auxiliary fuel device, a three-dimensional fin cold air efficient heating device, a three-dimensional fin smoke efficient cooling device, a stale garbage preheating device and a leachate thermal concentration device.

Description

Technical field: [0001] The invention belongs to the field of garbage incineration, and in particular relates to a system and method for treating stale garbage in landfills. technical background: [0002] With the development of society, it is "imperative" to incinerate municipal solid waste. At present, domestic waste incineration mainly includes direct simple incineration and waste incineration power generation. [0003] Direct and simple incineration generally refers to the intermittent manual feeding of small waste incinerators used in small towns. This incineration method is generally below 10t / d, mainly intermittent treatment. Due to insufficient incineration technology and imperfect environmental protection facilities, secondary pollution Very serious. In addition, the public does not pay much attention to and understand it, insufficient capital investment, serious lack of operational supervision, no economic output, and extremely high environmental and economic cost...

AI Technical Summary

Problems solved by technology

[0006] (1) After domestic waste enters the landfill, it will continue to decompose and humify under the action of complex physical chemistry and microorganisms, and with the advancement of landfill stabilization, a large amount of flammable landfill gas will be continuously released The calorific value of the stock garbage is reduced. At the same time, after the mixed garbage is landfilled, it will inevitably seep into rainwater and surface runoff water, resulting in an extremely low calorific value of the stale garbage in the landfill and poor incineration;

[0007] (2) Landfills generally require the thickness of each unit layer of garbage to be 2-3m, and the thickness shall not exceed 6m, and each unit of landfill layer is covered with a 30-40cm thick soil layer and other similar measures, resulting in the landfill garbage not being Combustible content is too high;

[0008] (3) The amount of incineration residue is large, the rate of loss on ignition is difficult to meet the standard, and the furnace temperature is not high, which is easy to produce a large amount of dioxins, and the incineration of landfill waste has a great impact on the environmental protection indicators of the incineration plant;

[0009] (4) Due to the incineration characteristics of landfill waste (low calorific value, high water content, high non-combustible components), the waste incineration plant cannot carry out incineration treatment on the landfill site, which limits its incineration scale. The purchase cost of equipment, flue gas purification equipment and other equipment is high, and the harmless operation cost of existing incineration technology is high, which leads to the uneconomical economic input and output of incineration enterprises, and it is difficult for enterprises to achieve profitability

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