Real tests on NO<sub>x</sub> emission distribution characteristics of a supercritical 600 MW CFB boiler

DU Jiajun; LI Jingfeng; HU Changhua; LIU Zhiyong; ZHANG Peng; XIN Shengwei; WANG Hu

doi:10.19666/j.rlfd.201909199

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Real tests on NO_x emission distribution characteristics of a supercritical 600 MW CFB boiler

更新时间：2025-09-28

- Real tests on NO_x emission distribution characteristics of a supercritical 600 MW CFB boiler
- Thermal Power Generation Vol. 49, Issue 5, Pages: 119-125(2020)
- 作者机构：
  
  1. 神华集团循环流化床技术研发中心
  2. 国家能源投资集团有限责任公司
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.201909199
  CLC： TK229.6
- Published Online：27 April 2020，
  
  Published：2020
- 稿件说明：
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DU Jiajun, LI Jingfeng, HU Changhua, et al. Real tests on NO_x emission distribution characteristics of a supercritical 600 MW CFB boiler[J]. Thermal power generation, 2020, 49(5): 119-125.
DOI：

DU Jiajun, LI Jingfeng, HU Changhua, et al. Real tests on NO_x emission distribution characteristics of a supercritical 600 MW CFB boiler[J]. Thermal power generation, 2020, 49(5): 119-125. DOI： 10.19666/j.rlfd.201909199.

摘要

为了进一步研究循环流化床(CFB)锅炉NO_x排放分布特性及变化规律

有针对性地进行设计优化、技术改造及运行调整等

本文在某台超临界600 MW机组CFB锅炉上进行了NO_x排放分布特性实炉试验

得到了锅炉炉膛、分离器等部位NO_x质量浓度的分布及变化规律

提供了炉内复杂气氛条件下NO_x排放的基础数据

并提出了合理控制运行风量及给煤量

优化一、二次风配比

提高二次风口位置

以及采用烟气再循环和低过量空气系数运行等降低NO_x原始排放质量浓度的技术措施

可为大型CFB锅炉设计、改进及运行等提供参考。

Abstract

In order to further study the distribution characteristics and change law of NO_x emission from circulating fluidized bed(CFB) boilers and carry out targeted design optimization

technical transformation and operation adjustment

real furnace test on a supercritical 600 MW CFB boiler was conducted. The distribution and change law of NO_x concentration inside the furnace

separator and other parts of the boiler were obtained. The basis data of NO_x emission in complex atmospheres inside the furnace were also gotten. Moreover

technical measures to reduce the NO_x emission concentration were put forward

such as reasonably controlling the operating air volume and feed coal quantity

optimizing the ratio of the primary air to secondary air

raising the secondary air port

and employing the flue gas recirculation and low excessive air coefficient. It provides a good practical reference for the design

improvement and operation of large scale CFB boilers.

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Real tests on NOx emission distribution characteristics of a supercritical 600 MW CFB boiler

DOI：10.19666/j.rlfd.201909199

摘要

Abstract

关键词

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Real tests on NO_x emission distribution characteristics of a supercritical 600 MW CFB boiler