大型贫煤锅炉NO<sub>x</sub>排放特性试验研究

曾汉才; 朱全利; 聂明局; 陈红铁

doi:10.19666/j.rlfd.1999.02.003

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大型贫煤锅炉NO_x排放特性试验研究

更新时间：2025-09-28

- 大型贫煤锅炉NO_x排放特性试验研究
- RESEARCH AND TEST ON NO x EMISSION PERFORMANCE OF A LARGE LEAN COAL-FIRED BOILER.
- 热力发电 1999年第2期
- 作者机构：
  
  华中理工大学
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.1999.02.003
  中图分类号： X770.1;X770.1
- 纸质出版：1999
- 稿件说明：
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曾汉才, 朱全利, 聂明局, 等. 大型贫煤锅炉NO_x排放特性试验研究[J]. 热力发电, 1999,(2).

RESEARCH AND TEST ON NO x EMISSION PERFORMANCE OF A LARGE LEAN COAL-FIRED BOILER.[J]. Thermal power generation, 1999, (2).
曾汉才, 朱全利, 聂明局, 等. 大型贫煤锅炉NO_x排放特性试验研究[J]. 热力发电, 1999,(2). DOI： 10.19666/j.rlfd.1999.02.003.

RESEARCH AND TEST ON NO x EMISSION PERFORMANCE OF A LARGE LEAN COAL-FIRED BOILER.[J]. Thermal power generation, 1999, (2). DOI： 10.19666/j.rlfd.1999.02.003.

摘要

在一台３００ＭＷ燃用贫煤锅炉上进行ＮＯｘ排放特性研究。燃烧工况包括负荷变化、过剩空气系数变化、顶部燃尽风（ＯＦＡ）及其喷嘴摆角大小、燃料风（周界风）以及在各层煤粉喷嘴层的煤粉量分配等情况下对ＮＯｘ排放的影响。研究结果表明，当过剩空气系数变化时ＮＯｘ变化较大，说明ＮＯｘ排放对过剩空气系数的变化比较敏感。该锅炉设有顶部燃尽风喷嘴，当燃尽风量增加和倾角上摆时，ＮＯｘ降低而飞灰可燃物增加，反之亦然。另外，当下层煤粉量多而上层煤粉量少时ＮＯｘ排放较低，但该炉总的ＮＯｘ排放量偏高（在８００ｍｇ／ｍ３以上），超过了国家标准的要求。

Abstract

Abstract In this paper

some research and test work on NO x emission characteristics in a 300MW lean coal-fired boiler are described in detail.Particularly

the effects of combustion conditions

such as load swinging

excess air ratio

OFA and its tilt angle

circumferential air as well as fuel distribution on NO x emission in exhaust gas

are studied.The NO x emission was changed greatly in response to excess air ratio.It was also found that NO x reduction was promoted by OFA positioned at the top of the burner.When OFA was increased and tilting angle was upward

the NO x emission was decreased while unburned carbon in fly ash was increased.In addition

the effect of coal distribution among coal burner layers on NO x emission was studied.With concentrated coal flow in lower layers and weak coal flow in higher layers

both low NO x and high efficiency performance could be obtained.However

NO x emission was still over the standard requirement and further investigation must be strengthened.

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大型贫煤锅炉NOx排放特性试验研究

RESEARCH AND TEST ON NO x EMISSION PERFORMANCE OF A LARGE LEAN COAL-FIRED BOILER.

DOI：10.19666/j.rlfd.1999.02.003

摘要

Abstract

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大型贫煤锅炉NO_x排放特性试验研究