Influence of closing-to-wall air on flow characteristics of a boiler’s secondary-air-box: numerical simulation

ZHANG Hongtao; GUAN Jian; LIU Ruimei; HU Qing; YANG Weijuan; WANG Zhihua; QIU Lichun

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Influence of closing-to-wall air on flow characteristics of a boiler’s secondary-air-box: numerical simulation

Thermal Power Generation Issue 3, (2017)

更新时间：2025-09-28

- Influence of closing-to-wall air on flow characteristics of a boiler’s secondary-air-box: numerical simulation
- 作者机构：
  
  1. 浙江大学能源清洁利用国家重点实验室,浙江,杭州,310027
  2. 浙江浙能技术研究院有限公司,浙江,杭州,310003
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK223
- Published Online：27 March 2017，
  
  Published：2017
- 稿件说明：
移动端阅览
ZHANG Hongtao, GUAN Jian, LIU Ruimei, et al. Influence of closing-to-wall air on flow characteristics of a boiler’s secondary-air-box: numerical simulation[J]. Thermal Power Generation, 2017, (3).
DOI：

ZHANG Hongtao, GUAN Jian, LIU Ruimei, et al. Influence of closing-to-wall air on flow characteristics of a boiler’s secondary-air-box: numerical simulation[J]. Thermal Power Generation, 2017, (3). DOI：

摘要

运用数值模拟方法，以某电厂 300 MW机组前后墙对冲燃烧锅炉二次风箱为研究对象，研究了贴壁风改造对锅炉二次风箱内流动特性及流量分配特性的影响。结果表明：贴壁风改造前，两侧燃烧器的流量低于中间燃烧器的流量，改造后，两侧燃烧器的流量高于中间燃烧器的流量，并且流量分配的均匀性也得以提高，相应的出口截面速度规律相同；各负荷下的贴壁风率较为恒定，均约为 6.57%；常用负荷下增加 4%二次风风量后，燃烧器流量与无贴壁风工况差异在 3%之内，仍能保证炉内燃烧稳定性。

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