Study on Modeling and Operation Characteristics of Pulverized-coal Preparation System with Medium Speed Coal Mill for Coal-fired Units

景峥; 伍克宁; 刘百慧; 胡晓阳; 王珠; 邱斌斌; 王进仕

doi:10.19805/j.cnki.jcspe.2026.240619

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Study on Modeling and Operation Characteristics of Pulverized-coal Preparation System with Medium Speed Coal Mill for Coal-fired Units

更新时间：2026-02-03

- Study on Modeling and Operation Characteristics of Pulverized-coal Preparation System with Medium Speed Coal Mill for Coal-fired Units
- Chinese Journal of Power Engineering Vol. 46, Issue 1, Pages: 32-41(2026)
- 作者机构：
  
  1. 西安交通大学能动学院,陕西,西安,710049
  2. 河北西柏坡发电有限责任公司,河北,石家庄,050000
- 作者简介：
- 基金信息：
- DOI：10.19805/j.cnki.jcspe.2026.240619
  CLC：
- Published Online：15 January 2026，
  
  Published：15 January 2026
- 稿件说明：
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景峥,伍克宁,刘百慧,胡晓阳,王珠,邱斌斌,王进仕. 燃煤机组中速磨煤机制粉系统建模及运行特性研究动力工程学报, 2026, 46(1): 32-41 https://doi.

org/10.19805/j.cnki.jcspe.2026.240619
景峥,伍克宁,刘百慧,胡晓阳,王珠,邱斌斌,王进仕. 燃煤机组中速磨煤机制粉系统建模及运行特性研究动力工程学报, 2026, 46(1): 32-41 https://doi. DOI： 10.19805/j.cnki.jcspe.2026.240619.

org/10.19805/j.cnki.jcspe.2026.240619 DOI：

摘要

建立精确的制粉系统模型并分析其运行特性

是系统运行控制优化的关键理论基础。搭建了包括磨煤机、一次风机、输煤管道等关键设备的磨辊式中速磨煤机制粉系统灰箱模型

其中耦合了磨煤机内部存煤量与运行参数的关系

考虑了煤粉细度对制粉系统出力的影响等。基于模型分析了制粉系统在单参数及固定风煤比时的稳态运行特性和启动过程中的动态运行特性。结果表明:当给煤量(质量流量)从12 kg/s增加到26 kg/s时

磨煤单耗从10.26 kW·h/t降低到7.14 kW·h/t

降低了30.4%;在固定风煤比的情况下

一次风温和原煤水分质量分数是决定煤粉出口温度的关键因素

当风煤比为1.6

一次风温从260℃升高到300℃时

出口风粉温度将升高19.03%;在升负荷过程中

制粉系统出力延迟了102 s。

Abstract

Establishing an accurate model of the pulverized-coal preparation system and analyzing its operational characteristics are the key theoretical foundations for optimizing the system operational control. By incorporating the coupling relationship between the internal coal inventory of the coal mill and its operational parameters

and considering the impact of pulverized coal fineness on the output capacity of the coal pulverizing system

a gray box model of pulverized-coal preparation system with roller-type medium speed coal mills

encompassing key equipment such as coal mills

primary air fans

and coal conveying pipelines

was constructed. Based on this model

the steady-state operational characteristics of the pulverized-coal preparation system under single-parameter and fixed air-to-coal ratio conditions

as well as its dynamic operational characteristics during the startup process

were analyzed. Results indicate that when the coal feed rate (mass flow rate) increases from 12 kg/s to 26 kg/s

the specific energy consumption for coal grinding decreases from 10.26 kW·h/t to 7.14 kW·h/t

representing a reduction of 30.4%. Under a fixed air-coal ratio

the primary air temperature and the mass fraction of moisture in raw coal are identified as the key factors determining the outlet temperature of pulverized coal. When the air-coal ratio is 1.6 and the primary air temperature rises from 260 ℃ to 300 ℃

the outlet air-coal mixture temperature increases by 19.03%. During the load-increasing process

the output capacity of the coal pulverizing system is delayed by 102 s.

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references

杨勇平, 陈衡, 郝俊红, 等. "双碳"目标下我国燃煤发电转型升级发展路径[J]. 中国电机工程学报, 2024, 44(17): 6900-6909.YANG Yongping, CHEN Heng, HAO Junhong, et al. Development pathways for the transformation and upgrading of China's coal-fired power generation under the goals of carbon peak and carbon neutrality[J]. Proceedings of the CSEE, 2024, 44(17): 6900- 6909.

《新型电力系统发展蓝皮书》编写组. 新型电力系统发展蓝皮书[M]. 北京: 中国电力出版社, 2023.

王翔宇, 陈武晖, 郭小龙, 等. 发电系统数字化研究综述[J]. 发电技术, 2024, 45(1): 120-131.WANG Xiangyu, CHEN Wuhui, GUO Xiaolong, et al. Review of research on the digitalization of power generation system[J]. Power Generation Technology, 2024, 45(1): 120-141.

岑可法, 周昊, 池作和. 大型电站锅炉安全及优化运行技术[M]. 北京: 中国电力出版社, 2003.

焦健. 中速磨制粉系统建模及其非线性预测控制方法研究[D]. 南京: 东南大学, 2016.

AGRAWAL V, PANIGRAHI B K, SUBBARAO P M V. Review of control and fault diagnosis methods applied to coal mills[J]. Journal of Process Control, 2015, 32: 138-153.

陈波, 王亚欧, 陶谦, 等. 基于长短期记忆神经网络的燃煤机组磨煤机性能预测模型[J]. 热力发电, 2021, 50(6): 121-127.CHEN Bo, WANG Yaou, TAO Qian, et al. LSTM-based performance prediction model for coal mill in a coal-fired unit[J]. Thermal Power Generation, 2021, 50(6): 121-127.

刘福国. 基于数据挖掘的钢球磨煤机运行特性建模和优化[J]. 煤炭学报, 2010, 5(5): 850-854.LIU Fuguo. Performance modeling and optimization of ball mill based on data mining[J]. Journal of China Coal Society, 2010, 35(5): 850-854.

XIE Youcheng, ZHANG Jing, REN Ping. Soft sensing system for coal storage in ball mill based on fuzzy neural network[C]//Proceedings of 2008 Chinese Control and Decision Conference. Yantai: IEEE, 2008: 1827-1831.

谷俊杰, 陈见永, 张岩. 双进双出磨煤机制粉系统机理建模与仿真[J]. 动力工程学报, 2017, 37(6): 467-474.GU Junjie, CHEN Jianyong, ZHANG Yan. Mechanism modeling and simulation on pulverizing system of a double-inlet double-outlet coal mill[J]. Journal of Chinese Society of Power Engineering, 2017, 37(6): 467-474.

LI Xinwen, WU Yingchun, CHEN Huafeng, et al. Coal mill model considering heat transfer effect on mass equations with estimation of moisture[J]. Journal of Process Control, 2021, 104: 178-188.

BHATT D S, DADIALA V, BARVE J J. Industrial coal Pulverizer model simulation and parametric investigation[J]. IFAC-PapersOnLine, 2018, 51(28): 115-120.

王朝阳, 石慧, 王文毓, 等. MPS型磨煤机制粉系统动态模型与瞬态运行优化控制研究[J]. 中国电机工程学报, 2024, 44(16): 6518-6528.WANG Chaoyang, SHI Hui, WANG Wenyu, et al. Study on dynamic model and transient operation optimization control of the MPS coal mill pulverizing system[J]. Proceedings of the CSEE, 2024, 44(16): 6518-6528.

罗毅, 段明达. 基于IWOA-Transformer的磨煤机故障预警[J]. 动力工程学报, 2024, 44(6): 939-946.LUO Yi, DUAN Mingda. Fault warning of coal mill based on IWOA-Transformer[J]. Journal of Chinese Society of Power Engineering, 2024, 44(6): 939-946.

张元东. 中速磨煤机特征分类及劣化分析算法研究[J]. 动力工程学报, 2024, 44(8): 1189-1195.ZHANG Yuandong. Research on feature classification and deterioration analysis algorithm of medium-speed coal mills[J]. Journal of Chinese Society of Power Engineering, 2024, 44(8): 1189-1195.

姜秀民, 杨海平, 李彦, 等. 煤粉颗粒粒度分形分析[J]. 煤炭学报, 2003, 28(4): 414-418.JIANG Xiumin, YANG Haiping, LI Yan, et al. Fractal characteristics of coal powder[J]. Journal of China Coal Society, 2003, 28(4): 414-418.

徐通模, 惠世恩. 燃烧学[M]. 2版. 北京: 机械工业出版社, 2017.

赵虹, 余海铭, 杨建国, 等. 中速磨煤机内风煤动态换热特性[J]. 中国电机工程学报, 2014, 34(11): 1735-1740. ZHAO Hong, YU Haiming, YANG Jianguo, et al. Dynamic heat transfer characteristics of gas-solid in medium speed mill[J]. Proceedings of the CSEE, 2014, 34(11): 1735-1740.

李新稳. 基于数据挖掘的中速磨煤机制粉系统建模研究[D]. 杭州: 浙江大学, 2020.

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