|
|
马上注册，结识高手，享用更多资源，轻松玩转三维网社区。
您需要 登录 才可以下载或查看，没有帐号？注册
x
分级燃烧对NOx生成及燃烧经济性的影响
" O' D- U% v; M6 w) ?6 | v; h- k( m) CImpact of Staged Combustion on Formation of NOxand Combustion Economics7 S6 m" T" l3 e6 x( q' v) j, g
电力工业部热工研究院 文 军 许传凯 (西安710032)
: J7 {2 @( Q" G% U4 N【摘要】 根据一维煤粉炉上的燃烧试验结果,研究
4 H- x0 f' n0 O. G) X7 t了空气分级燃烧对我国电站锅炉四种典型用煤的
/ v# s! g" c( UNOx生成特性及煤粉燃尽率的影响。分析结果表8 _7 \" R9 {# Z
明,空气分级燃烧可以有效地降低炉内NOx的生成+ X& ^, I1 |# N: L% \
与排放。在综合考虑NOx排放与燃烧经济性的平衡
- F$ F3 _& b# C& g后,可以得到试验煤种的最佳参数范围,在此范围内( o* D/ W( `, ^; y, }# \
可以实现低NOx高经济性的燃烧过程。7 f; d9 a! a" w- ]; f; X7 r! f
【关键词】 煤粉燃烧 空气分级 氮氧化物 燃尽
% s7 @2 y! [ j. e3 c率
- {. f6 Q9 {' I- e" o# R4 w8 jAbstract Based upon the results of combustion test-' \3 f6 l! a& a5 [ f5 R
ing on one-dimensional pulverized coal fired boilers,
, c# z/ k2 q. jthe impacts of air-staged combustion on the formation3 ]' n9 r% l5 V; {5 V
characteristics of NOxand burn-up rate of pulverized* l2 E, F6 c' i# ]1 i l! ~! ~" C
coal for four typical kinds of coal fired in utility boilers8 C2 t! [: r! F5 r* ]
in China were studied. The result analysis indicated3 P j1 [- P: a' H. G- x
that air-staged combustion could effectively reduce the, r+ T5 e7 H& ^% M% V t2 A/ L: ?$ S
formation of NOxin furnace and its emission. Through* W6 x& f; i% r7 Q
the overall balance of NOxemission and combustion) j" w5 u3 D1 W2 v) i
economics, the optimum parameter range of the tested# g d* g1 K. c2 w9 h3 U
coals can be obtained, and the efficient combustion
) {) G4 o- ~2 h _ I+ kprocess with low NOxemission within this range can
1 @$ F9 ~$ z/ Obe realized.' v3 U5 W7 D) x1 b; l
Key Words combustion of pulverized coal airstaged
8 D) d5 E3 z; x+ e2 O' B nitrogen oxide burn-up rate |
|
发表于 2009-9-17 16:48:34
