Burning apparatus by using gas of buried garbage

Abstract

The invention relates to refuse landfill gas combustion apparatus. It can utilize scrapped refuse landfill gas to save energy resource and protect environment. The burned gas and the landfill gas are rotated with relative reverse direction under the action of two stage rotational flow]. The first stage is entered air. The second is entered the landfill gas. Both of them are at the same axis. The air is flowed from outer to inner along radial. The landfill gas is flowed from inner to outer. It can reasonably form combustion by controlling the two airflows. In addition part of the landfill gas is flowed out along axial diameter direction. The airflow has axial, radial, and cycle direction velocity. The invention can make refuse landfill gas burn stably, fully, and quickly at large discharge variation range.

Description

Technical field [0001] The present invention is a device designed for the unique physical properties of landfill gas, which can stably, fully and rapidly burn the landfill gas when the flow rate of the landfill gas changes in a relatively large range, especially to make the combustion of landfill gas It becomes easier to control, so it can be applied to landfill leachate evaporation furnaces, various sanitary hot water boilers, medical waste incinerators, sludge solidification treatment furnaces, etc. The combustion head of the gas torch system is an energy-saving and environmental protection equipment. Background technique [0002] Landfill gas is the gas produced by anaerobic fermentation after landfill, in which CH 4 The content of 50% ~ 70%, CO 2 The content of 30% ~ 50%, and a small amount of water vapor and H 2 S gas. An important characteristic of landfill gas is that its flow rate and physical properties are not stable. At present, the development of landfill ga...

AI Technical Summary

Problems solved by technology

At present, the development of landfill gas is still in its infancy. One of the key technologies to be developed is how to burn landfill gas stably, fully and rapidly within a large flow range. Some existing burners use blunt In the form of body turbulence, the high-temperature combusted flue gas is formed into a local small vortex, and the recirculated high-temperature gas is used to ignite the fresh unburned mixed gas. Since the relative flow rate of the recirculated gas is very small, the combustion speed of the landfill gas is relatively slow, and the flame It will be dragged for a long time, which is not conducive to the design of the furnace, and is also not conducive to the stability of the flame when the flow rate changes in a large range

This is also one of the reasons why landfill gas is not widely used at present.

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