Numerical simulation on mixed combustion characteristics of coal-bed methane and pulverized coal in a 600 MW unit boiler

CUI Yongan; GAO Jie; XU Liang; QIAO Xiaolei; JIN Yan

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Numerical simulation on mixed combustion characteristics of coal-bed methane and pulverized coal in a 600 MW unit boiler

Thermal Power Generation Issue 6, (2017)

更新时间：2025-09-28

- Numerical simulation on mixed combustion characteristics of coal-bed methane and pulverized coal in a 600 MW unit boiler
- 作者机构：
  
  太原理工大学电气与动力工程学院,山西,太原,030024
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK16
- Published Online：30 June 2017，
  
  Published：2017
- 稿件说明：
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CUI Yongan, GAO Jie, XU Liang, et al. Numerical simulation on mixed combustion characteristics of coal-bed methane and pulverized coal in a 600 MW unit boiler[J]. Thermal Power Generation, 2017, (6).
DOI：

CUI Yongan, GAO Jie, XU Liang, et al. Numerical simulation on mixed combustion characteristics of coal-bed methane and pulverized coal in a 600 MW unit boiler[J]. Thermal Power Generation, 2017, (6). DOI：

摘要

使用涡耗散模型，对某600 MW机组锅炉掺烧矿井乏风后的燃烧特性进行了数值模拟，研究了乏风体积分数对锅炉燃烧特性及NOx生成特性的影响。结果表明：随着乏风体积分数的上升，主燃烧器区域内炉膛平均温度降低幅度最高为30 K，降低幅度并不明显，主燃烧器区域上层平均温度先上升后降低；在整体上炉膛截面氧体积分数随着甲烷体积分数的上升而降低，一氧化碳体积分数随着甲烷体积分数升高而升高；掺烧矿井乏风后，CDEF层燃烧器区域内NOx质量浓度随着甲烷体积分数上升而上升，AB层燃烧器区域上层炉膛截面NOx质量浓度随着甲烷体积分数上升而降低，降低幅度最多为253.21 mg/m3；掺烧甲烷体积分数为1.5%的矿井乏风后，炉膛出口处NOx质量浓度从569.64 mg/m3降至519.24 mg/m3，降低幅度为8.85%。说明锅炉掺烧矿井乏风不仅能够节约资源和保护环境，还有助于降低NOx的排放。

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