Dimethyl ether gas boiler burner nitrogen reducing device

Abstract

The invention discloses a dimethyl ether gas boiler burner nitrogen reducing device and solves the technical problem in the prior art that when the flame temperature is lowered in order to reduce nitrogen oxides generated by combustion, the heat efficiency of a boiler is lowered. The dimethyl ether gas boiler burner nitrogen reducing device comprises an outer shell, a cyclone mechanism is arrangedin an inner cavity of the outer shell, an air suction hole opposite to the cyclone mechanism is arranged at one end of the outer shell, a flame outlet hole is formed in the other end of the outer shell, a first fuel central spraying pipe opposite to the flame outlet hole is formed in the outer shell, and an outer ring flame spraying unit is arranged on the periphery of the outer shell. The dimethyl ether gas boiler burner nitrogen reducing device adopts a structure mode combing small-bore flame spraying nozzles and flame spraying holes, multi-sprayer small hole flame spraying is built, and byadopting a central flame pre-mixing method, the flame temperature is reduced while the heat efficiency is not changed. The nitrogen oxide emission standard in Beijing and Shanghai is 30 milligrams per cubic meter or below. A burner in the invention is subjected to a combustion test for ten days, the emission amount of nitrogen oxides is lower than 30 milligrams per cubic meter and is only 26 milligrams.

Description

technical field [0001] The invention belongs to the technical field of burners, in particular to a nitrogen reduction device for a dimethyl ether gas boiler burner. Background technique [0002] Compared with other gases, dimethyl ether gas is a relatively clean gas, and its main pollutant is nitrogen oxides (NO X ), NO X In addition to endangering human health, through a series of physical and chemical reactions in the atmosphere, photochemical smog is formed with hydrocarbons, ozone, etc. after sunlight. Not only that, NO X At the same time, it is also an important cause of acid rain and an important culprit in the production of atmospheric ultrafine particulate matter (PM2.5). Nitrogen oxides (NO X ) generation mechanism and NO produced during gas combustion X There are mainly three types of fuel type, thermal type and fast type. The rapid NO X It is the pyrolysis of carbon oxides during the combustion process to produce CH free radicals and N in the air 2 The mol...

AI Technical Summary

Problems solved by technology

[0016] In view of the deficiencies in the above-mentioned background technology, the present invention proposes a nitrogen reduction device for a dimethyl ether gas-fired boiler burner, which solves the technology in the prior art that reduces the thermal efficiency of the boiler when the flame temperature is reduced in order to reduce the nitrogen oxides produced by combustion question

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