Zero-smoke emission combustion furnace

Abstract

The invention relates to the field of boilers and particularly relates to a zero-smoke emission combustion furnace. The zero-smoke emission combustion furnace comprises a filter chamber, an induced draft fan, a flue and an air return pipe, wherein a smoke outlet of a convective heat exchange chamber is connected with the input end of the induced draft fan through a first connecting pipe; a filtercavity and a filter tank are arranged in the filter chamber; the output end of the induced draft fan is connected with the filter cavity through a second connecting pipe; the lower side of the filtercavity is provided with a plurality of filter pipes, and when a system works, the end openings of the output ends of the plurality of filter pipes are all located below the liquid surface in the filter tank; the lower end of the flue extends into the filter chamber, and when the system works, the lower end of the flue is located above the liquid surface in the filter tank; and the part, extendingout of the filter chamber, of the flue is connected with the first connecting pipe through the air return pipe. By utilizing the flue to lead out the air return pipe, smoke circulating filtering is realized, the filtering effect is greatly improved, zero-smoke or little-smoke emission also can be realized, and the environment protecting requirement of the boiler is fully met.

Description

technical field [0001] The invention relates to the field of boilers, in particular to a smokeless exhaust combustion furnace. Background technique [0002] As the country has higher and higher requirements for energy conservation and environmental protection, the control of flue gas emitted by combustion has become more and more stringent. The combustion furnace in the prior art usually includes a combustion chamber and a convective heat exchange chamber. The flue gas generated after the fuel is fully burned and gasified in the combustion chamber enters the convective heat exchange chamber, and the flue gas after convective heat exchange is discharged from the flue , but the combustion furnace in the prior art does not sufficiently filter the flue gas generated after combustion, which will still have an impact on the environment. Contents of the invention [0003] The purpose of the present invention is to provide a smokeless exhaust combustion furnace, which uses a retu...

AI Technical Summary

Problems solved by technology

The combustion furnace in the prior art usually includes a combustion chamber and a convective heat exchange chamber. The flue gas generated after the fuel is fully burned and gasified in the combustion chamber enters the convective heat exchange chamber, and the flue gas after convective heat exchange is discharged from the flue , but the combustion furnace in the prior art does not sufficiently filter the flue gas generated after combustion, which will still have an impact on the environment

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