Low-nitrogen efficient module combined unit structure

Abstract

The invention provides a low-nitrogen efficient module combined unit structure. The low-nitrogen efficient module combined unit structure comprises a cover body, wherein the cover body is internally provided with a combustion chamber; heat insulation layers are arranged at two sides of the combustion chamber; an air inlet channel is arranged between the combustion chamber and the cover body; a fuel gas inlet is formed in the lower part of the combustion chamber; the combustion chamber is internally provided with a spraying nozzle; a cold water pipe penetrates through the cover body and extends to a heating pipeline; the heating pipeline is arranged at the upper part of the spraying nozzle; a hot water pipeline is arranged at the other end of the heating pipeline; a steam chamber is arranged at the upper part of the combustion chamber; a strong exhaust fan is arranged at the upper part of the steam chamber; one end of the strong exhaust fan is communicated with an efficient condensation and heat-exchange recycling device; the upper end of the efficient condensation and heat-exchange recycling device is communicated with a low-nitrogen water-cooling combustor; and the lower end of the efficient condensation and heat-exchange recycling device is communicated with the heating pipeline. A main heat exchanger is used as a primary heat exchanger for absorbing a large quantity of heat released from the combustor and the efficient condensation and heat-exchange recycling device is used as a secondary heat exchanger which is mainly used for absorbing evaporation latent heat of one part of steam, so that the heat exchange efficiency of a boiler can be improved, the latent heat is sufficiently utilized and the practicability is relatively strong.

Description

technical field [0001] The invention relates to the technical field of burner structures, in particular to a low-nitrogen high-efficiency module combination unit structure. Background technique [0002] Chemical reaction equation of natural gas combustion process: CH 4 +2O 2 =CO 2 +2H 2 O, as can be seen from the equation, under the premise of assuming that the molar molecular volumes of various gases are equal, burning 1molCH 4 2mol oxygen is required. For ordinary natural gas boilers, the heat exchanger only recovers the sensible heat of high-temperature flue gas, while the heat of superheated steam that is twice the amount of gas is discharged in vain, and the latent heat of vaporization cannot be recovered, resulting in low efficiency. Contents of the invention [0003] In order to solve the above-mentioned problems, the present invention provides a low-nitrogen high-efficiency module combination unit structure, which recycles and utilizes the latent heat of vapor...

AI Technical Summary

Problems solved by technology

For ordinary natural gas boilers, the heat exchanger only recovers the sensible heat of high-temperature flue gas, while the heat of superheated steam that is twice the amount of gas is discharged in vain, and the latent heat of vaporization cannot be recovered, so that the efficiency is low

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