超超临界锅炉风粉管道速度偏差的模拟研究

程智海; 靳雍华; 郑成杰; 吕国

doi:10.19805/j.cnki.jcspe.2025.240414

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超超临界锅炉风粉管道速度偏差的模拟研究

动力设备与系统 | 更新时间：2026-10-10

- 超超临界锅炉风粉管道速度偏差的模拟研究
- Simulation Study on Velocity Deviations in Air-Powder Pipelines of Ultra-supercritical Units
- 动力工程学报 2025年45卷第8期页码：1173-1178
- 作者机构：
  
  1. 上海电力大学能源与机械工程学院,上海,201306
  2. 宁夏国能鸳鸯湖发电有限公司,宁夏,银川,750000
- 作者简介：
  
  程智海(1976—),男,山西临汾人,副教授,博士,研究方向为燃烧及系统优化,E-mail:czh.cn@163.com
- 基金信息：
- DOI：10.19805/j.cnki.jcspe.2025.240414
  中图分类号：
- 网络首发：2025-08-12，
  
  纸质出版：2025
- 稿件说明：
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程智海,靳雍华,郑成杰,吕国. 超超临界锅炉风粉管道速度偏差的模拟研究动力工程学报, 2025, 45(8): 1173-1178 https://doi.

org/10.19805/j.cnki.jcspe.2025.240414
程智海,靳雍华,郑成杰,吕国. 超超临界锅炉风粉管道速度偏差的模拟研究动力工程学报, 2025, 45(8): 1173-1178 https://doi. DOI： 10.19805/j.cnki.jcspe.2025.240414.

org/10.19805/j.cnki.jcspe.2025.240414 DOI：

摘要

针对某1 000 MW超超临界直流锅炉风粉管道

采用计算流体力学软件对不同磨煤机对应风粉管道出口速度偏差进行了数值模拟

分析了风粉管道自身布置对出口速度偏差的影响

研究了煤粉粒径、风煤比、空气入口温度对风粉管道出口速度偏差的影响规律。结果表明:较长风粉管道的沿程损失比较短风粉管道高

二者出口速度存在偏差;随着煤粉粒径分布越来越分散

风粉管道内部流体的扰动提高

使沿程损失逐渐增大

出口速度偏差呈下降趋势;随着风煤比、空气入口温度的降低

管道内部空气输送煤粉浓度增大

沿程损失逐渐增大

出口速度偏差呈下降趋势。

Abstract

A numerical simulation was conducted on the outlet velocity deviations of air-powder pipelines for different coal mills of a 1 000 MW ultra-supercritical once through boiler using computational fluid dynamics software. The influence of pipeline layout on the outlet velocity deviations was analyzed

and the effect of coal particle size

air-coal ratio and inlet air temperature on the outlet velocity deviations in air-powder pipelines was investigated. Results show that longer pipelines exhibit higher along-route losses compared to shorter ones

resulting in outlet velocity deviations. Moreover

as coal particle size distribution becomes more dispersed

internal flow disturbances in air-powder pipelines increase

leading to escalating along-route losses and decreasing outlet velocity deviations. Decreases in air-coal ratio and inlet air temperature also increase coal concentration in the pipeline

further enhancing along-route losses and reducing outlet velocity deviations.

关键词

Keywords

references

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