Low-nitrogen condensation steam boiler

Abstract

The invention provides a low-nitrogen condensation steam boiler, which comprises a steam boiler body; a boiler is installed in an inner cavity of the steam boiler body; a combustion bin is arranged between the outer wall of the boiler and the inner wall of the steam boiler body; a combustor is installed on the outer wall of the steam boiler body; a smoke exhaust pipe is arranged on the upper portion of the steam boiler body; the lower end of the smoke exhaust pipe is communicated with the combustion bin; the upper end of the smoke exhaust pipe is communicated with an air inlet of a smoke sucker through an auxiliary treatment device; an air outlet of the smoke sucker is communicated with an exhaust pipe; the auxiliary treatment device comprises a dust collecting box, a U-shaped auxiliary pipe, a water flowing pipe and a filter plate; one end of the U-shaped auxiliary pipe is communicated with the upper end of the smoke exhaust pipe; the other end of the U-shaped auxiliary pipe is communicated with an upper input port of the dust collecting box; a lower port of the dust collecting box is communicated with an air inlet of the smoke sucker; the filter plate is obliquely fixed in the dust collecting box; and the water flowing pipe is spirally wound on the U-shaped auxiliary pipe.

Description

technical field [0001] The invention belongs to the technical field of machinery, and relates to a boiler, in particular to a low-nitrogen condensing steam boiler. Background technique [0002] The boiler is an energy conversion device. The energy input to the boiler includes chemical energy and electric energy in the fuel, and the boiler outputs steam, high-temperature water or organic heat carrier with a certain amount of heat energy. The original meaning of the pot refers to the water container heated on the fire, and the furnace refers to the place where fuel is burned. The boiler includes two parts: the pot and the furnace. The hot water or steam generated in the boiler can directly provide the required heat energy for industrial production and people's life, and can also be converted into mechanical energy through a steam power device, or converted into electrical energy through a generator. Boilers that provide hot water are called hot water boilers, which are mainly...

AI Technical Summary

Problems solved by technology

[0004] Although the boiler disclosed in this patent can realize ultra-low nitrogen combustion, the structure of the boiler is too simple, and the high-temperature flue gas with dust in the flue gas outlet channel is likely to affect the working stability of the exhaust fan. Therefore, a kind of Low nitrogen condensing steam boiler is necessary

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