Low nitrogen burners adopt measures to reduce NOx production by increasing the injection rate,returning flue gas and expanding the flame surface.However,when operating in a low temperature environment,the fuel cannot be completely burned,resulting in poor combustion flame stability and high CO content in exhaust smoke.In view of the above problems,the method of adding a central gun to locally strengthen the combustion is put forward,a 2.8 MW low CO burner is designed,and the combustion performance test of the low CO burner is carried out on the experimental furnace.The performance test shows that when the furnace temperature is lower than 700℃,in order to make the NOx and CO content meet the relevant standards and requirements,the fuel ratio of the central gun of the low CO burner should be 25%-35%.The low CO burner with 30%central gun fuel was selected for the effect test.The test results show that when the furnace temperature is 530-700℃,the low CO burner effectively solves the problems of the low nitrogen burner in the low temperature environment of the furnace,meets the national emission standards,greatly reduces the CO content in the exhaust smoke,improves the stability of the combustion flame,and can meet the use requirements of the industrial site.
关键词
低温加热炉/低CO燃烧器/中心枪/燃料占比
Key words
low temperature furnace/low CO burner/central fuel gun/fuel ratio
维普
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