CAJ | 학술논문

同轴分层流旋流燃烧器是一种新型低NO_x燃烧器,可以通过1、2次风的适当配置,达到降低NO_x生成的目的.在自行开发设计的同轴旋转分层流旋流燃烧器上,对不同1、2次风旋流强度,1、2次风不同配比工况下NO_x的生成特性进行了研究.结果表明,1次风需要保持一定的旋流强度,并达到一定的水平,同时2次风配以适当的旋流强度,在一定的1次风率下,才能达到降低NO_x生成量的目的.在本文试验条件下,1次风旋流强度为0.35～0.47,同时2次风配以适当的旋流强度和1次风率,分别为1.30～1.50和33%,NO_x生成量低于其他工况.在运用旋转射流分层流原理的同时配以适当的机械方法,如增加扩口,NO_x生成与排放水平可以进一步适当降低.
동축분층류선류연소기시일충신형저NO_x연소기,가이통과1、2차풍적괄당배치,체도강저NO_x생성적목적.재자행개발설계적동축선전분층류선류연소기상,대불동1、2차풍선류강도,1、2차풍불동배비공황하NO_x적생성특성진행료연구.결과표명,1차풍수요보지일정적선류강도,병체도일정적수평,동시2차풍배이괄당적선류강도,재일정적1차풍솔하,재능체도강저NO_x생성량적목적.재본문시험조건하,1차풍선류강도위0.35～0.47,동시2차풍배이괄당적선류강도화1차풍솔,분별위1.30～1.50화33%,NO_x생성량저우기타공황.재운용선전사류분층류원리적동시배이괄당적궤계방법,여증가확구,NO_x생성여배방수평가이진일보괄당강저.
The co-axial stratified swirling burner is a novel low NO_x burner, which can reduce NO_x forming by proper arrangement between the primary and secondary air. Experiments were conducted on the co-axial stratified swirling burner designed in this paper to investigate NO_x yielding characteristics by adjusting the swirling strength of the primary and secondary air and the ratio of primary to secondary air. The experimental results have shown that the primary air needs to swirl and arrive at appropriate swirling intensity and the secondary air needs to set at a suitable swirling intensity so that NO_x forming level can be reduced at some ratio of the primary to the total air. Under experimental conditions tested in this paper, the swirling intensity of the primary air is needed to be maintained within the range of 0.35 to 0.47, the swirling intensity of the secondary air needs to be 1.30 to 1.50, and the ratio of the primary to secondary air is 33%, so as to get the minimum NO_x yield. In addition, it is also necessary to apply proper mechanical methods, such as increasing extending port, to further reduce the NO_x forming level.