Household garbage and burning fly ash joint-disposal method and equipment

Abstract

The invention relates to household garbage and burning fly ash joint-disposal method and equipment. The equipment comprises a plasma torch system and a gasification smelting furnace, wherein the smelting furnace comprises a slag discharge port, a gas lead-out port, a slag bin, a smelting burning chamber, a gasification chamber, a drying chamber, a fuel gas negative-pressure bin, a feed bin, a plasma torch interface, an air inlet and a thermocouple interface. The method comprises the following steps of: adding the bed material into the smelting furnace, and starting the plasma torch system; when the furnace temperature reaches the rated value, feeding the mixture of the household garbage and the burning fly ash into the feed bin; after drying and smelting burning, discharging the generated synthesis gas out of the smelting furnace through the fuel gas negative-pressure bin and the gas lead-out port; and discharging the generated slag through the slag bin and the slag discharge port. Through the invention, the toxic and harmful wastes in the mixture of the household garbage and the burning fly ash can be completely eliminated, the synthesis gas generated by the gas smelting can be used for the power generation of an internal combustion engine, and continuous feed / discharge of the material can be realized at the same time; and moreover, the structure is relatively simple and reliable, and the economic benefits are very obvious.

Description

technical field [0001] The invention relates to the technical field of solid waste treatment, in particular to a co-disposal method and equipment for domestic waste and incineration fly ash. Background technique [0002] With the rapid development of the economy, urban waste is also increasing. At present, the urban domestic waste in my country is increasing at a rate of 8% to 10% per year. As the calorific value of municipal solid waste increases year by year and the output continues to increase, many cities in our country have adopted the incineration method to deal with municipal solid waste. After domestic waste is incinerated, some minerals and elements are concentrated in the incineration ash. Among them, the content of toxic elements is 10 to 100 times larger than that in ordinary soil, and the ash of garbage incineration contains high concentration of dioxins. The "National Hazardous Waste List" has clearly stipulated that the fly ash of domestic waste incineration...

AI Technical Summary

Problems solved by technology

However, most of these products are rarely used in my country at present. The main reason is that these gasifiers have high requirements on the selectivity of the charge, high processing costs, and insignificant economic benefits.

[0006] It can be seen that the above-mentioned existing mixed treatment technology of domestic waste and incineration fly ash obviously still has inconvenience and defects in terms of equipment structure, treatment method and use, and needs to be further improved urgently.

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