直吹式制粉系统风粉偏差及可调缩孔调平的数值模拟研究

郭修文; 蒋序东; 曾佳微; 韩金克; 吴建群; 夏永俊; 聂昌达

doi:10.19805/j.cnki.jcspe.2025.240397

欢迎来到能源电力期刊网！

English Version 期刊登录

您当前的位置：

首页 >

文章列表页 >

直吹式制粉系统风粉偏差及可调缩孔调平的数值模拟研究

动力设备与系统 | 更新时间：2026-10-10

- 直吹式制粉系统风粉偏差及可调缩孔调平的数值模拟研究
- Numerical Simulation Study on Air-Powder Deviation and Adjustable Orifice Balancing Performance of Direct-fired Pulverizing System
- 动力工程学报 2025年45卷第8期页码：1186-1193
- 作者机构：
  
  1. 江投能源技术研究有限公司,江西,南昌,330096
  2. 江投国华信丰发电有限责任公司,江西,赣州,341600
  3. 河北工业大学能源与环境工程学院,天津,300131
- 作者简介：
  
  郭修文(1995—),男,江西上饶人,工程师,硕士,研究方向为燃煤锅炉燃烧数值模拟,E-mail:2285738195@qq.com
- 基金信息：
  
  国家自然科学基金资助项目(52006080)
- DOI：10.19805/j.cnki.jcspe.2025.240397
  中图分类号：
- 网络首发：2025-08-12，
  
  纸质出版：2025
- 稿件说明：
移动端阅览
郭修文,蒋序东,曾佳微,韩金克,吴建群,夏永俊,聂昌达. 直吹式制粉系统风粉偏差及可调缩孔调平的数值模拟研究动力工程学报, 2025, 45(8): 1186-1193 https://doi.

org/10.19805/j.cnki.jcspe.2025.240397
郭修文,蒋序东,曾佳微,韩金克,吴建群,夏永俊,聂昌达. 直吹式制粉系统风粉偏差及可调缩孔调平的数值模拟研究动力工程学报, 2025, 45(8): 1186-1193 https://doi. DOI： 10.19805/j.cnki.jcspe.2025.240397.

org/10.19805/j.cnki.jcspe.2025.240397 DOI：

摘要

针对直吹式制粉系统磨煤机出口一次风管道内风粉分配不均衡问题

在一次风管道风速冷、热态调平试验基础上

对某700 MW超临界燃煤发电机组中速磨煤机和出口一次风管道的风粉两相流动开展数值模拟

研究磨煤机内部风粉不均分布及管道固有阻力差异对出口管道风粉分配的影响

并对可调缩孔门的风粉调平性能进行了探究。结果表明:实际运行中一次风不对称进入磨煤机导致分离器前一次风管道对应4个分区的风粉分配不均衡

风量分配最大偏差为7.8%

煤粉量分配最大偏差为23%;分离器前风粉均匀分布时热态风粉分配最大偏差分别为11.26%和9.12%

而风粉不均分布时热态风粉分配最大偏差分别为11.14%和16.78%

管道固有阻力差异是造成风量偏差的最主要原因

而内部煤粉不均分布和管道固有阻力差异的共同作用导致出口一次风管道煤粉量分配偏差;未在一次风管道前设置有效的煤粉分配器情况下

可调缩孔门对出口管道煤粉量均衡调节作用有限

难以同时实现风粉均衡分配。

Abstract

To address the issue of unbalanced air-powder distribution in primary air ducts at the outlet of coal mills in a direct-fired pulverizing system

based on cold and hot-state air velocity balancing tests in primary air ducts

numerical simulations were conducted on the two-phase flow of air and powder in medium-speed coal mills and primary air ducts of a 700 MW supercritical coal-fired power unit. The influence of uneven air-powder distribution inside the coal mill and inherent resistance differences in the ducts on air-powder distribution at the outlet were studied

and the balancing performance of adjustable orifices was investigated. Results show that asymmetric entry of primary air into the coal mill causes unbalanced air-powder distribution in four zones corresponding to the primary air ducts before the separator during actual operation. The maximum relative deviation in air volume distribution is 7.8%

and the maximum relative deviation in powder volume distribution is 23%. When air-powder distribution before the separator is uniform

the maximum relative deviations in hot-state air and powder distribution are 11.26% and 9.12%

respectively. When air-powder distribution is uneven

these deviations become 11.14% and 16.78%

respectively. Inherent resistance differences in the ducts are the primary cause of air volume deviations

while the combined effect of uneven coal powder distribution inside the mill and inherent duct resistance differences leads to powder volume distribution deviations in the outlet primary air ducts. Without an effective powder distributor installed in front of the primary air ducts

adjustable orifices have limited ability to balance powder volume distribution in the outlet ducts

making it difficult to achieve simultaneous balance of air and powder distribution.

关键词

Keywords

references

刘家利, 屠竞毅, 方顺利, 等. 中速磨煤机在大型煤粉电站锅炉应用现状研究[J]. 热力发电, 2021, 50(3): 19-26. LIU Jiali, TU Jingyi, FANG Shunli, et al. Application status of medium speed coal mill in large-scale coal-fired power plants[J]. Thermal Power Generation, 2021, 50(3): 19-26.

王战锋, 吴东垠, 李淑宏. 一次风的风粉偏差对烟温偏斜影响的试验和理论研究[J]. 沈阳工程学院学报(自然科学版), 2020, 16(1): 17-24. WANG Zhanfeng, WU Dongyin, LI Shuhong. Experimental and theoretical study on the influence of primary air powder deviation on smoke temperature deviation[J]. Journal of Shenyang Institute of Engineering (Natural Science), 2020, 16(1): 17-24.

林华. 风粉阻力偏差对锅炉燃烧特性的影响[J]. 发电设备, 2021, 35(1): 22-26. LIN Hua. Influence of air-powder distribution deviation on combustion characteristics of the boiler[J]. Power Equipment, 2021, 35(1): 22-26.

靳菲, 阎维平, 苏宏亮, 等. W型火焰锅炉一次风粉参数测量及调平试验研究[J]. 热力发电, 2013, 42(11): 54-59. JIN Fei, YAN Weiping, SU Hongliang, et al. Parameter measurement and balancing experiment of primary air and powder in a W-flame boiler[J]. Thermal Power Generation, 2013, 42(11): 54-59.

侯凡军, 张利孟, 刘景龙, 等. 直吹式制粉系统送粉管道粉量分配特性试验研究[J]. 山东电力技术, 2018, 45(5): 61-65. HOU Fanjun, ZHANG Limeng, LIU Jinglong, et al. Experimental study on the pulverized coal distribution characteristics in coal pipes of direct-firing type pulverizing system[J]. Shandong Electric Power, 2018, 45(5): 61-65.

陈刚, 刘进峰, 李大正, 等. 中速磨煤机制粉系统优化技术研究及应用[J]. 发电技术, 2021, 42(3): 363-373. CHEN Gang, LIU Jinfeng, LI Dazheng, et al. Research and application of optimization technology of medium speed pulverizing system[J]. Power Generation Technology, 2021, 42(3): 363-373.

国家能源局. 火力发电厂制粉系统设计计算技术规定: DL/T 5145-2012[S]. 北京: 中国电力出版社, 2012.

张斯媛. 锅炉煤粉均衡分配控制技术的研究[D]. 北京: 华北电力大学, 2015.

石全成, 吕为智, 周文台, 等. 可调节煤粉分配器的风粉两相流动特性数值模拟[J]. 动力工程学报, 2022, 42(12): 1183-1190, 1205. SHI Quancheng, L Weizhi, ZHOU Wentai, et al. Numerical simulation of two-phase flow characteristics of pulverized coal distributor[J]. Journal of Chinese Society of Power Engineering, 2022, 42(12): 1183-1190, 1205.

辛力, 施鸿飞, 吕为智, 等. 可调节式煤粉分配器数值模拟研究[J]. 发电设备, 2020, 34(4): 235-240. XIN Li, SHI Hongfei, L Weizhi, et al. Numerical simulation of an adjustable pulverized coal distributor[J]. Power Equipment, 2020, 34(4): 235-240.

薛飞宇, 韩健民, 梁双印. 电站锅炉双可调煤粉分配器气固两相流动特性研究[J]. 动力工程学报, 2021, 41(12): 1033-1039, 1108. XUE Feiyu, HAN Jianmin, LIANG Shuangyin. Research on gas-solid two-phase flow characteristics of double-adjustable pulverized coal distributors in power station boilers[J]. Journal of Chinese Society of Power Engineering, 2021, 41(12): 1033-1039, 1108.

张沪香. 改善煤粉分配均匀性措施的研究[J]. 华电技术, 2010, 32(2): 29-30, 33. ZHANG Huxiang. Study on improving measures for pulverized coal distribution evenness[J]. Huadian Technology, 2010, 32(2): 29-30, 33.

刘定坡, 杨培军, 冯扩磊, 等. 直吹式制粉系统风粉偏差对机组灵活性的影响[J]. 洁净煤技术, 2019, 25(2): 139-143. LIU Dingpo, YANG Peijun, FENG Kuolei, et al. Influence of air-powder distribution deviation of direct-blowing pulverizing system on unit operation flexibility[J]. Clean Coal Technology, 2019, 25(2): 139-143.

SHIH T H, LIOU W W, SHABBIR A, et al. A new k-ε eddy viscosity model for high Reynolds number turbulent flows[J ] . Computer ＆ Fluids, 1995, 24(3): 227-238.

袁竹林, 朱立平, 耿凡, 等. 气固两相流动与数值模拟[M]. 南京: 东南大学出版社, 2013: 61-63.

王丽珏, 胡寿根, 赵军, 等. Y型分支管内气固两相流动的数值模拟[J]. 力学季刊, 2009, 30(1): 55-61. WANG Lijue, HU Shougen, ZHAO Jun, et al. Numerical simulation of gas-solid two phase flow in Y-shape branch pipe[J]. Chinese Quarterly of Mechanics, 2009, 30(1): 55-61.

浏览量

下载量

CSCD

文章被引用时，请邮件提醒。

提交

工具集

关联资源

不同维度下大型VAWT并联布置气动特性分析

考虑动态失速特性的翼型气动外形优化研究

压力旋流喷嘴结构参数对雾化性能的影响及优化

掺烧棉秆对1000MW旋流对冲锅炉最低稳燃负荷的影响

基于解耦方法探究N2、CO2对生物质气层流燃烧速度的影响