Treatment method and implementation system for refuse incineration ash

Abstract

The invention relates to a treatment method and system for refuse incineration ash. The treatment method for the refuse incineration ash comprises the steps that: the refuse is incinerated in an refuse incinerator (1) and the generated fly ash as well as the incineration smoke enters a decomposition furnace (2) of a cement clinker sintering system and then enters a cement kiln together with cement raw meal to be sintered to the cement clinker; hot slag is discharged out of the refuse incinerator after incineration, and is cooled in a refuse slag cooling device (3) by cooling air; the cool air exchanges heat with the hot slag to form hot air, and the hot air enters the refuse incinerator for drying and incinerating the refuse; cool slag formed by air cooling of the hot slag enters a raw material batching station to be used as the raw material of the cement and to enter a cement raw material milling system to be subjected to cement raw meal milling; and the cool slag and the other raw materials are milled to obtain the powdery cement raw meal, and the powdery cement raw meal enters the cement clinker sintering system to sinter to obtain the cement clinker. According to the system for the refuse incineration ash, the refuse slag cooling device is connected with the refuse incinerator and is arranged below the refuse incinerator.

Description

technical field [0001] The invention belongs to the technical field of garbage disposal, and in particular relates to a method and an implementation system for co-processing domestic garbage incineration ash by utilizing a cement burning system. Background technique [0002] The source and composition of domestic waste are complex, which can be roughly divided into organic matter and inorganic matter. With the improvement of urban living standards, the content of organic matter is gradually increasing. my country's waste has the characteristics of high moisture content and low calorific value. At present, my country's garbage stockpile over the years has reached more than 6 billion tons, occupying 500 million square meters of arable land. In 2010, the amount of urban garbage generated was about 264 million tons, and it is increasing at an average annual rate of 5-8%. In 2050, it will reach 528 million The disposal of urban domestic waste has become a major "bottleneck" restr...

AI Technical Summary

Problems solved by technology

[0005] At present, the slag produced by grate furnace incineration of garbage is used for cooling by water cooling, which not only consumes a lot of water resources, but also produces water vapor entering the incinerator and cement burning system, which will affect the waste incineration system and cement kiln system. Stability, reducing the service life of incinerators and cement kiln system equipment and their refractory materials; in addition, the water-cooled ash contains moisture, which increases the water content of cement raw materials, and consumes more drying heat of cement raw materials. Grinding and drying efficiency of cement raw meal

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