A low-nitrogen and low-dioxin fire grate incineration method and device for garbage

Abstract

The invention discloses a method for garbage low-nitrogen and low-dioxin grate incineration and a device of the method for garbage low-nitrogen and low-dioxin grate incineration. The device comprises a first channel and an incineration hearth which is arranged on the bottom of the first channel, wherein a blowing subassembly is arranged along the peripheral wall of the first channel and enables smoke in the first channel to form two groups of tangent circles and spirally ascend; and the smoke forms two groups of tangent circles and spirally ascends through the blowing subassembly in the first channel, the temperature of the first channel is controlled between 850 DEG C and 900 DEG C through regulating the air flow of a blowing nozzle of the blowing subassembly, the smoke residence time is above 2 seconds, the smoke flows to an outlet of the first channel finally, slag which is generated after garbage on the tail end of a grate is completely burnt is discharged through a slag discharge port, and accordingly, a garbage low-nitrogen and low-dioxin grate incineration process is completed. The method and the device have the advantages of high combustion efficiency, good environmental-friendly effect and low initial construction and operation cost, and are suitable for large, medium and small-scale treatment of industrial and urban garbage incineration.

Description

technical field [0001] The invention relates to a garbage incineration method and incineration equipment, in particular to a garbage low-nitrogen and low-dioxin grate incineration method and a device thereof. Background technique [0002] Garbage siege is a common problem faced by cities all over the world. On the one hand, the garbage output is increasing year by year, and on the other hand, the urbanization process is accelerating, and the urban area is constantly expanding, which leads to the extremely serious problem of land for garbage disposal. In large cities such as Beijing, Shanghai, and Guangzhou, it is almost difficult to find suitable land for waste disposal. At the same time, due to the continuous improvement of residents' environmental awareness, more and more attention has been paid to the secondary pollution problems that may be caused by landfills, incineration and other waste treatment facilities. [0003] The flue gas produced by the waste incineration p...

AI Technical Summary

Problems solved by technology

At present, the staged combustion of municipal solid waste incinerators is along the flue gas flow direction in the combustion chamber, mainly distributing secondary air (SA), and it is difficult to control the flue gas temperature and residence time in the first channel

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