Influence factors of carbon content in fly ash in circulating fluidized bed boiler

SUO Jiangshun; CUI Zhigang; MA Suxia; JIA Jiandong; WANG Hui; LUO Dingling; LIU Jianhua

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Influence factors of carbon content in fly ash in circulating fluidized bed boiler

更新时间：2025-09-28

- Influence factors of carbon content in fly ash in circulating fluidized bed boiler
- Thermal Power Generation Vol. 45, Issue 7, Pages: 84-87(2016)
- 作者机构：
  
  1. 太原理工大学电气与动力工程学院
  2. 中北大学机械与动力工程学院
  3. 山西平朔煤矸石发电有限责任公司
  4. 国网山西省电力公司电力科学研究院
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK229.66
- Published：2016
- 稿件说明：
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SUO Jiangshun, CUI Zhigang, MA Suxia, et al. Influence factors of carbon content in fly ash in circulating fluidized bed boiler[J]. Thermal power generation, 2016, 45(7): 84-87.
DOI：

SUO Jiangshun, CUI Zhigang, MA Suxia, et al. Influence factors of carbon content in fly ash in circulating fluidized bed boiler[J]. Thermal power generation, 2016, 45(7): 84-87. DOI：

摘要

针对某电厂300 MW双支腿循环流化床(CFB)锅炉

基于影响因子系数分析方法

研究不同负荷下及负荷变化时入炉煤颗粒粒径、二次风出口压力与密相区压降比(p1/Δp)、省煤器出口氧量、一二次风量比和床温对飞灰含碳量的影响。结果表明:二次风出口压力与密相区压降比和一二次风量比对飞灰含碳量的影响程度较大

而省煤器出口氧量和床温(880~930℃)的影响相对较小。该研究结果可为双支腿CFB锅炉的燃烧调整提供指导。

Abstract

Taking a 300 MW unit circulating fluidized bed(CFB)boiler as an example

the influencing factor coefficient analysis method was employed to investigate the effects of several operation parameters on carbon content of fly ash under conditions with different loads and variable load

such as the coal particle size

the pressure ratio of the secondary air outlet pressure to pressure drop in dense phase zone

the oxygen content at the economizer outlet

the ratio of the primary air volume to the secondary air volume

and the bed temperature.The results show that

the ratio of the secondary air outlet pressure to pressure drop in dense phase zone

and the ratio of the primary air volume to the secondary air volume

have greater influence on the carbon content of the fly ash.While the oxygen content at the economizer outlet and the bed temperature(880~930℃)have relatively lower one.The results of this study provide guidance for the adjustment of combustion underpants leg type circulating fluidized bed boiler.

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