褐煤烟气预干燥发电系统变工况特性的仿真研究

韩小渠 1; 严俊杰 1; 穆祺伟 1; 刘明 1; 种道彤 1; 肖峰 2

doi:10.7652/xjtuxb201501005

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褐煤烟气预干燥发电系统变工况特性的仿真研究

更新时间：2025-07-09

- 褐煤烟气预干燥发电系统变工况特性的仿真研究
- Simulation for Off-Design Performances of Flue Gas Pre-Dried Lignite-Fired Power System
- 西安交通大学学报 2015年49卷第1期页码：27-33
- 作者机构：
  
  西安交通大学动力工程多相流国家重点实验室,西安,710049
- 作者简介：
- 基金信息：
  
  : 2014-04-09。作者简介: 韩小渠(1989—),男,博士生;严俊杰(通信作者),男,教授,博士生导师。基金项目: 国家自然科学基金资助项目(51125027,U1261201);教育部高等学校博士学科点专项科研基金资助项目(20120201110048)
- DOI：10.7652/xjtuxb201501005
  中图分类号： TK11
- 网络首发：2015-01-10，
  
  纸质出版：2015
- 稿件说明：
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韩小渠 1, 严俊杰 1, 穆祺伟 1, 等. 褐煤烟气预干燥发电系统变工况特性的仿真研究[J]. 西安交通大学学报, 2015,49(1):27-33.

Simulation for Off-Design Performances of Flue Gas Pre-Dried Lignite-Fired Power System[J]. 2015, 49(1): 27-33.
韩小渠 1, 严俊杰 1, 穆祺伟 1, 等. 褐煤烟气预干燥发电系统变工况特性的仿真研究[J]. 西安交通大学学报, 2015,49(1):27-33. DOI： 10.7652/xjtuxb201501005.

Simulation for Off-Design Performances of Flue Gas Pre-Dried Lignite-Fired Power System[J]. 2015, 49(1): 27-33. DOI： 10.7652/xjtuxb201501005.

摘要

针对褐煤烟气预干燥发电系统的变工况特性建立了全厂机炉耦合仿真模型

在设计工况下校核了模型的精度。对比发现:烟气预干燥可使600 MW机组的发电效率绝对值提高1.56%

发电标准煤耗率降低9.58 g·(kW·h)

-1

。在不同的发电功率和褐煤预干燥程度下仿真了系统的变工况特性

分析了锅炉主要运行参数和机组发电标准煤耗率的变化规律

结果表明:发电标准煤耗率随发电功率的下降而上升; 在不同的发电功率下

预干燥程度对锅炉运行参数和发电标准煤耗率影响显著

随着预干燥程度的减小

理论燃烧温度下降

高温炉烟抽取率下降

锅炉排烟温度上升

锅炉效率下降

发电标准煤耗率上升。

Abstract

To investigate off-design characteristics of the lignite-fired power system integrated with flue gas drying

a whole-system boiler-turbine coupling simulation model is developed. The model is verified with the parameters under design conditions. It is found that flue gas pre-dried lignite-fired power system is endowed with remarkable energy-saving potential compared with the conventional lignite-fired power system. The plant thermal efficiency of a 600 MW unit increases by 1.56%(absolute variation)under design condition

and the standard coal consumption rate decreases by 9.58 g·(kW·h)

-1

accordingly. The off-design characteristics are simulated with variable power loads and lignite pre-drying degrees. The variation tendencies of the boiler operating parameters and system standard coal consumption rate ar

e analyzed. The simulation shows that with the decreasing power load

the standard coal consumption rate increases; with the decreasing pre-drying degree

the theoretical combustion temperature and hot flue gas extracting ratio decrease

and the boiler exhaust temperature increases

which lead to a decreasing boiler thermal efficiency and an increasing coal consumption rate.

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Keywords

references

戴和武, 谢可玉. 褐煤利用技术 [M]. 北京: 煤炭工业出版社, 1999.

熊伟. 适用于发电集成的褐煤预干燥技术 [J]. 电站辅机, 2013, 34(1): 30-34.

XIONG Wei. Pre-drying technologies applicable for integration of lignite-fired power station [J]. Power Station Auxiliary Equipment, 2013, 34(1): 30-34.

郭晓克, 肖锋, 严俊杰, 等. 高效褐煤发电系统研究 [J]. 中国电机工程学报, 2011, 31(26): 23-31.

GUO Xiaoke, XIAO Feng, YAN Junjie, et al. Study on efficient lignite-fired power system [J]. Proceedings of the CSEE, 2011, 31(26): 23-31.

HATZILYBERIS K S, ANDROUTSOPOULOS G P, SALMAS C E. Indirect thermal drying of lignite: design aspects of a rotary dryer [J]. Drying Technology, 2000, 18(9): 2009-2049.

KARTHIKEYAN M, ZHONGHUA W, MUJUMDAR A S. Low-rank coal drying technologies: current status and new developments [J]. Drying Technology, 2009, 27(3): 403-415.

SARUNAC N, LEVY E K, NESS M, et al. A novel fluidized bed drying and density segregation process for upgrading low-rank coals [J]. International Journal of Coal Preparation and Utilization, 2009, 29(6): 317-332.

WHEELER R A, HOADLEY A F A, CLAYTON S A. Modelling the mechanical thermal expression behaviour of lignite [J]. Fuel, 2009, 88(9): 1741-1751.

SAKAGUCHI M, LAURSEN K, NAKAGAWA H, et al. Hydrothermal upgrading of Loy Yang brown coal: effect of upgrading conditions on the characteristics of the products [J]. Fuel Processing Technology, 2008, 89(4): 391-396.

KAKARAS E, AHLADAS P, SYRMOPOULOS S. Computer simulation studies for the integration of an external dryer into a Greek lignite-fired power plant [J]. Fuel, 2002, 81(5): 583-593.

WEIGL K, SCHUSTER G, STAMATELOPOULOS G N, et al. Increasing power plant efficiency by fuel drying [J]. Computers Chemical Engineering, 1999, 23: S919-S922.

LIU M, YAN J J, BAI B F, et al. Theoretical study and case analysis for a predried lignite-fired power system [J]. Drying Technology, 2011, 29(10): 1219-1229.

GUO X K, LIU M, LAI F, et al. Theoretical study and case analysis for a predried lignite-fired power plant with the waste heat recovery system [J]. Drying Technology, 2012, 30(4): 425-434.

LIU M, YAN J J, CHONG D T, et al. Thermodynamic analysis of pre-drying methods for pre-dried lignite-fired power plant [J]. Energy, 2013, 49: 107-118.

ATSONIOS K. Thermodynamic analysis and compari-son of retrofitting pre-drying concepts at existing lignite power plants[J/OL]. Applied Thermal Engineering, 2013 [2014-01-09]. http:∥dx.doi.org/10.1016/j.appltherma-leng.2013.11.007.

李勤道, 刘明, 严俊杰, 等. 锅炉烟气预干燥褐煤发电系统热经济性计算分析 [J]. 电机工程学报, 2012, 32(20): 14-19.

LI Qindao, LIU Ming, YAN Junjie, et al. Thermal economic calculation and analysis for boiler flue gas pre-dried lignite-fired power generation system [J]. Proceedings of the CSEE, 2012, 32(20): 14-19.

MA Y F, YUAN Y, JIN J, et al. An environment friendly and efficient lignite-fired power generation process based on a boiler with an open pulverizing system and the recovery of water from mill-exhaust [J]. Energy, 2013, 59: 105-115.

张昀, 李卫东, 许传凯, 等. 褐煤锅炉磨煤机选型和煤粉水分选取的探讨 [J]. 中国电力, 2011, 44(8): 36-39.

ZHANG Yun, LI Weidong, XU Chuankai, et al. Approach to moisture content in pulverized coal and pulverizer style selection for lignite utility boilers [J]. Electric Power, 2011, 44(8): 36-39.

车得福, 庄正宁, 李军, 等. 锅炉 [M]. 西安: 西安交通大学出版社, 2008: 328-333.

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