STRUCTURE OF OPPOSED JET FLAME AND NO-CHI FORMATION

被引：1
|
作者：
YOSHIDA, A [1 ]
NARISAWA, M [1 ]
TSUJI, H [1 ]
机构：
[1] ISHIKAWAJIMA HARIMA HEAVY IND CO LTD,RES INST,DEPT FLUID DYNAM & COMBUST,KOTO KU,TOKYO 135,JAPAN
来源：
JSME INTERNATIONAL JOURNAL SERIES B-FLUIDS AND THERMAL ENGINEERING | 1994年 / 37卷 / 03期
关键词：
COMBUSTION; PREMIXED COMBUSTION; POLLUTANT; GASEOUS FUEL; TURBULENT COMBUSTION; DISTRIBUTED REACTION ZONE;
D O I：
10.1299/jsmeb.37.643
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
High-intensity premixed combustion (0.71 - 1.12x10(9) kJ/m(3)h) was achieved using an opposed jet burner. The NOx emission was measured by an NO/NOx chemiluminescence analyzer. Maximum NOx formation measured was extremely low and varied from 20 ppm to 40 ppm, depending on the combustion intensity. Such a low NOx formation is attributed to the short residence time and the structure of the distributed reaction zone. The equivalence ratio at which NOx is maximized was found to be 1.3. The temperature dependence of NOx concentration can be given empirically by an Arrhenius expression, and the apparent activation energy is small compared with that of the Zel'dovich mechanism. On the basis of these results, we can conclude that the contribution from the Zel'dovich mechanism is suppressed in the distributed reaction zone and that the NOx originating from prompt NO is predominant.
引用
收藏
页码：643 / 649
页数：7
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