Experimental study on emission characteristics of design coal for a 660MW unit circulating fluidized bed boiler

SUN Baomin; ZHAO Lizheng

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Experimental study on emission characteristics of design coal for a 660MW unit circulating fluidized bed boiler

Thermal Power Generation Vol. 44, Issue 11, Pages: 81-85(2015)

更新时间：2025-09-28

- Experimental study on emission characteristics of design coal for a 660MW unit circulating fluidized bed boiler
- 作者机构：
  
  1. 华北电力大学电站设备状态监测与控制教育部重点实验室
  2. 中煤平朔集团有限公司
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK229.66
- Published：2015
- 稿件说明：
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SUN Baomin, ZHAO Lizheng. Experimental study on emission characteristics of design coal for a 660MW unit circulating fluidized bed boiler[J]. Thermal Power Generation, 2015, 44(11): 81-85.
DOI：

SUN Baomin, ZHAO Lizheng. Experimental study on emission characteristics of design coal for a 660MW unit circulating fluidized bed boiler[J]. Thermal Power Generation, 2015, 44(11): 81-85. DOI：

摘要

在3MW循环流化床(CFB)锅炉燃烧试验台上

对某超临界660MW机组CFB锅炉设计煤种进行了试烧试验

研究了锅炉设计煤种的自脱硫性能

添加石灰石对炉内脱硫效率的影响

以及炉内低NOx燃烧特性。结果表明:燃用设计煤种时

炉内燃烧较为稳定;设计煤种具有一定的自脱硫效果且与床温有关

床温在860~900℃时

自脱硫效率可达31.6%;添加石灰石后

炉内脱硫效率可提高至95.1%

且脱硫效率与钙硫摩尔比和石灰石粒径有关

且对燃烧效率影响较大;不同负荷下

NOx排放量均可维持在较低水平。

Abstract

On a 3 MW circulating fluidized bed(CFB)boiler combustion test bench

combustion tests were carried out for Pingshuo 660 MW unit CFB boiler burning the design coal.The self desulfurization characteristics

low NOxcombustion property and effects of adding limestone on desulphurization efficiency were investigated.The results show that

when firing the desing coal

the combustion inside the furnace is stable.The design coal has a certain self-desulphurization effect and the bed temperature is an important factor affecting the self-desulfurization efficiency.The self-desulfurization efficiency of the design coal can achieve31.6%in the temperature range from 750 ℃ to 800 ℃.It was enhanced to 96.5% after limestone was added.The molar ratio of calcium to sulfur and the particle size were related to the desulfurization efficiency

which had a significant influence on combustion efficiency.Under different load conditions

the NOx emission can be kept at a low level.

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