LOW-NOx COMBUSTION RETROFIT OF BOILERS FOR 2×350 MW UNITS IN LIGANG POWER PLANT AND INFLUENCE UPON THE BOILERS'OPERATION

WANG Dong-ping; JIA Hong-lu; LIU Xiao-ping Ligang Electric Power Co Ltd

doi:10.19666/j.rlfd.2008.12.010

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LOW-NOx COMBUSTION RETROFIT OF BOILERS FOR 2×350 MW UNITS IN LIGANG POWER PLANT AND INFLUENCE UPON THE BOILERS'OPERATION

更新时间：2025-09-28

- LOW-NOx COMBUSTION RETROFIT OF BOILERS FOR 2×350 MW UNITS IN LIGANG POWER PLANT AND INFLUENCE UPON THE BOILERS'OPERATION
- Thermal Power Generation Vol. 37, Issue 12, Pages: 38-44(2008)
- 作者机构：
  
  利港电力有限公司
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.2008.12.010
  CLC： TK227.1
- Published：2008
- 稿件说明：
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WANG Dong-ping, JIA Hong-lu, LIU Xiao-ping Ligang Electric Power Co Ltd. LOW-NOx COMBUSTION RETROFIT OF BOILERS FOR 2×350 MW UNITS IN LIGANG POWER PLANT AND INFLUENCE UPON THE BOILERS'OPERATION[J]. Thermal power generation, 2008, 37(12): 38-44.
DOI：

WANG Dong-ping, JIA Hong-lu, LIU Xiao-ping Ligang Electric Power Co Ltd. LOW-NOx COMBUSTION RETROFIT OF BOILERS FOR 2×350 MW UNITS IN LIGANG POWER PLANT AND INFLUENCE UPON THE BOILERS'OPERATION[J]. Thermal power generation, 2008, 37(12): 38-44. DOI： 10.19666/j.rlfd.2008.12.010.

摘要

利港电厂对两台FW公司设计的前墙燃烧锅炉进行了以降低氮氧化物排放为目标的改造。通过更换新型低氮燃烧器和增加燃尽风(OFA)喷口

使氮氧化物排放降低了60%

但锅炉飞灰含碳量有所增加。鉴于此

对改造后的燃烧系统进行了调整优化

最终达到了在不同氧量、不同磨煤机组合和不同燃用煤种下

降低氮氧化物排放浓度

减少再热器管排温度偏差

遏制飞灰含碳量增加和防止出现堆渣的效果。

Abstract

Taking decrease of NOx emission as the target

two boilers with front-wall burning designed by Foster Wheeler Inc.and equiped in Ligang Power Plant have been retrofitted.Through replacement and utilization of new type low-NOx burners

addition of over-fired air(OFA)

the NOx has been reduced by 60%

but the carbon content in fly ash from boilers has somewhat increased.In view of this

an optimized adjustment of the retrofitted combustion system has been carried out.Finally

under different oxygen density

different combination of coal pulverizers

and burning different coal sorts

results of reducing NOx emission density

decreasing deviation of temperature on tubulatue of reheater

curbing the increase of carbon content in fly ash

as well as proventing appearance of slag-staking have been obtained.

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