A device and method for drying garbage using heat generated by garbage incineration

Abstract

The invention belongs to the technical field of solid waste treatment and particularly relates to a device and method for drying garbage through heat generated by garbage incineration. The device is formed by connecting at least two flue gas waste heat utilization devices in series and is characterized in that each flue gas waste heat utilization device is a hollow box body, wherein heat conduction plates are arranged on the inner wall of the top of the box body; and a screen is arranged between every two adjacent flue gas waste heat utilization devices, wherein the upper surface of the screen and the upper surfaces of the flue gas waste heat utilization devices are arranged on the same plane and are commonly used as heat transfer faces to be used for spreading and drying the garbage. By means of the device and method for drying the garbage through the heat generated by garbage incineration, the heat generated by combustion of the garbage is used for drying the garbage, waste heat resource utilization is achieved, and energy is not consumed.

Description

technical field [0001] The invention belongs to the technical field of solid waste treatment, and in particular relates to a device and method for drying waste by using heat generated by waste incineration. Background technique [0002] Garbage incineration is an older and traditional method of garbage disposal. In modern times, various countries have built incinerators one after another. Garbage incineration has become one of the main methods of urban garbage disposal. Generally, the temperature in the furnace is controlled at about 980°C. After incineration, the volume ratio can be reduced by 50-80%, and the combustible garbage collected by classification can even be reduced by 90% after incineration. [0003] Through the incineration of garbage, the high-temperature flue gas generated after incineration is mostly cooled by the surface cooler, purified by the purifier and then emptied, resulting in a waste of heat energy. However, the moisture content in the garbage is hi...

AI Technical Summary

Problems solved by technology

[0003] Garbage is treated by incineration. The high-temperature flue gas generated after incineration is mostly cooled by the surface cooler, purified by the purifier and then emptied, resulting in a waste of heat energy.

However, the moisture content in the garbage is high and the calorific value is low. If the garbage is dried before being incinerated, the drying process will consume a lot of heat.

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