A flameless incineration process for solid waste

Abstract

The invention discloses a flameless incineration process of solid waste. The flameless incineration process of the solid waste comprises the steps of sorting treatment, anaerobic fermentation, flameless incineration and combustible gas recovery. The process provided by the invention is high in treatment efficiency, good in comprehensive efficiency, thoroughly clean in treatment, high in flameless incineration temperature and quick to carbonize; the combustible gas is sufficient to be converted, so that the self-sufficiency of energy during the incineration process is realized, and the weight of the produced coke residues is light; the bubbles are rich; the water permeability is good; the carbon content is high, and the ultra-low emission of hazardous materials is realized.

Description

technical field [0001] The invention belongs to the technical field of environmental protection and relates to a comprehensive utilization process of solid waste resources, in particular to a flameless incineration process of solid waste. Background technique [0002] With the development of social economy and the improvement of people's living standards, the discharge of solid waste has increased rapidly. At present, the annual increase of solid waste in the world has reached 10 billion tons, which is 0.6 tons per capita. The problem of solid waste has attracted people's attention because of its "the most difficult to be treated", "the most comprehensive", "the most polluting", "the latest to be taken seriously" and "the closest to life". [0003] At present, there are three main methods of solid waste treatment in the world: composting, landfilling and incineration for power generation. The composting method sorts out the organic matter through pretreatment. Since the sor...

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Problems solved by technology

Although the above-mentioned solid waste treatment technologies have their own emphasis, it is difficult to achieve the "three modernizations" promoted by the state

[0004] In addition, domestic solid waste in my country is restricted by regions, seasons, and economic conditions. The components of solid waste are diverse, complex, and flame-retardant, and the water content of solid waste is generally higher than 40%. Such solid waste is incinerated The incineration treatment of the furnace will inevitably lead to unstable combustion and easy flameout in the furnace. Even if auxiliary energy is added to support the combustion, the combustion conditions will not be stable, making the operation complicated, high operating costs, difficult to control dioxin, serious pollution, and mass Collective incidents continue one after another, so the combustion method of the incinerator is not completely suitable for the current solid waste treatment in our country

[0005] At present, there are existing methods of sorting solid waste to recycle valuable substances, increase the combustion value through anaerobic fermentation process, produce biogas and produce clean energy through thermal cracking, and produce granular combustibles for non-perishable organic matter. Small inorganic and organic matter are reported to be buried or incinerated, but there is still a certain gap in the actual implementation

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