|
|
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
: {1 I+ S/ R3 l; k; dImpact of Staged Combustion on Formation of NOxand Combustion Economics
8 {, f& D8 G* y- c电力工业部热工研究院 文 军 许传凯 (西安710032): Y: y" t- h; ?0 i$ M
【摘要】 根据一维煤粉炉上的燃烧试验结果,研究
9 m* A1 c% Q- h0 p* u; N+ a7 @了空气分级燃烧对我国电站锅炉四种典型用煤的8 L$ u0 Z A2 v0 Y0 B
NOx生成特性及煤粉燃尽率的影响。分析结果表
0 [3 j7 M- Z- `6 q2 ]明,空气分级燃烧可以有效地降低炉内NOx的生成# N' @2 c) \2 X
与排放。在综合考虑NOx排放与燃烧经济性的平衡
* G( }+ `5 G& E$ T后,可以得到试验煤种的最佳参数范围,在此范围内
' ]& m. l) \0 \ x% Y可以实现低NOx高经济性的燃烧过程。, t0 _* j( |% W& v* S
【关键词】 煤粉燃烧 空气分级 氮氧化物 燃尽7 N% a% g) O7 k4 Q& U% N _
率
5 D; a D, }9 D3 dAbstract Based upon the results of combustion test-0 K( z5 f( \: O6 G
ing on one-dimensional pulverized coal fired boilers,/ e5 i8 Y! [/ b a- g1 R
the impacts of air-staged combustion on the formation5 b0 q- J( `* {; d% i
characteristics of NOxand burn-up rate of pulverized$ K3 |# ~! T' X3 |( i& v8 L2 ]% K
coal for four typical kinds of coal fired in utility boilers
8 e% h5 `- j' e: c7 p5 w7 Uin China were studied. The result analysis indicated
" q; A) f/ O0 v/ F, `% Gthat air-staged combustion could effectively reduce the% V+ h( S2 U$ ~9 ?: r
formation of NOxin furnace and its emission. Through- @8 u3 `( o% }6 E/ C
the overall balance of NOxemission and combustion% y6 H8 g' p) z m2 E
economics, the optimum parameter range of the tested4 Q/ p7 \7 Z! b& t0 a
coals can be obtained, and the efficient combustion( x9 R9 o' p) O. I9 j4 z- l! a
process with low NOxemission within this range can3 T+ I7 ^1 `% v; ~, L
be realized.! i1 Y" \1 c" i4 r0 V
Key Words combustion of pulverized coal airstaged
$ G5 m% f9 E% F6 J- R nitrogen oxide burn-up rate |
|
发表于 2009-9-17 16:48:34
