Numerical Simulation Study on NO<sub>x</sub> Emission Characteristics and the Optimization of Air Induction of Coal-Fired Chain Boiler Blended with Semi-Coke

WANG Chang'an; HOU Yujie; LIU Chengchang; WANG Chaowei; GAO Xinyue; CHE Defu

doi:10.7652/xjtuxb202204001

您当前的位置：

首页 >

文章列表页 >

Numerical Simulation Study on NO_x Emission Characteristics and the Optimization of Air Induction of Coal-Fired Chain Boiler Blended with Semi-Coke

更新时间：2025-07-09

- Numerical Simulation Study on NO_x Emission Characteristics and the Optimization of Air Induction of Coal-Fired Chain Boiler Blended with Semi-Coke
- Vol. 56, Issue 4, Pages: 1-12(2022)
- 作者机构：
  
  西安交通大学能源与动力工程学院,西安,710049
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb202204001
  CLC： TK16
- Online First：10 April 2022，
  
  Published：2022
- 稿件说明：
移动端阅览
WANG Chang'an, HOU Yujie, LIU Chengchang, et al. Numerical Simulation Study on NO_x Emission Characteristics and the Optimization of Air Induction of Coal-Fired Chain Boiler Blended with Semi-Coke[J]. 2022, 56(4): 1-12. DOI: 10.7652/xjtuxb202204001.
DOI：

WANG Chang'an, HOU Yujie, LIU Chengchang, et al. Numerical Simulation Study on NO_x Emission Characteristics and the Optimization of Air Induction of Coal-Fired Chain Boiler Blended with Semi-Coke[J]. 2022, 56(4): 1-12. DOI: 10.7652/xjtuxb202204001. DOI：

摘要

针对煤炭分级分质转换过程中产生的过剩副产品热解半焦

为更加高效清洁的利用煤炭资源

本文提出在链条炉中掺烧热解半焦。使用Fluent软件对链条炉中烟煤与半焦的掺烧工况进行了数值模拟

研究了炉膛内流场、温度场和组分场的变化规律以及配风优化的影响

探讨了掺烧过程中NO

的生成特性以及配风优化对炉内燃烧性能的影响。结果表明

提高半焦的掺混比例

炉膛中NO的体积分数升高

炉膛出口平均烟温降低。推迟配风有助于炉内形成贫氧程度更深的局部还原性区域

从而抑制NO

原始生成

减少炉膛NO

最终排放。层燃室燃复合燃烧时

烟煤在炉排上燃烧的同时将半焦粉末喷入炉膛

半焦比例每增加5%

炉膛出口平均温度约增加30 ℃; 半焦粉末在炉中喉口位置喷入时

炉膛出口烟温最高。本文的研究结果能够为链条炉高效低污染掺烧利用热解半焦等低挥发分煤基固体燃料

提供一定的理论依据和科学指导。

Abstract

To utilize coal resources more efficiently and cleanly

this paper proposes the blending of pyrolysis semi-coke in the chain boiler for the excessive by-products

pyrolysis semicokes

produced in the process of coal classification in quality. Numerical simulations of the blending conditions of bituminous coal and semi-coke in a chain boiler were carried out by using Fluent software. The paper investigates the changing patterns of flow field

temperature field and component field in the boiler and the effect of a

ir distribution optimization

explores the NO

emission characteristics and the effect of air distribution optimization on the combustion performance of the boiler during the blending process. The results show that the concentration of NO in the boiler increases and the average gas temperature at the boiler outlet decreases by increasing the blending ratio of semi-coke. Delaying the air distribution helps to form a local reductive zone with deeper oxygen-deficient in the boiler

thus suppressing the original NO

generation and finally reducing the NO

emission of the boiler. When compound combustion of rate firing-chamber rating is organized

the bituminous coal is burned on the grate while the semi-coke powder is sprayed into the boiler. For each 5% increase in the semi-coke proportion

the average temperature at the boiler outlet increases by about 30 ℃; the highest gas temperature of the furnace outlet is when the semi-coke powder is sprayed in the throat of the boiler. The results of this paper can provide some theoretical basis and scientific guidance for the efficient and low-pollution blending of low volatile coal-based solid fuels such as pyrolysis semi-coke in chain boilers.

关键词

Keywords

references

BP. BP statistical review of world energy 2021[EB/OL]. [2021-08-06]. https: ∥www.bp.com/content/dam/bp/business-sites/en/global/corporate/pdfs/energy-economics/statistical-review/bp-stats-review-2021 -full-report.pdf.

国家统计局能源统计司. 中国能源统计年鉴: 2020 [M]. 北京: 中国统计出版社, 2021.

BP. BP energy outlook: 2020 edition [EB/OL]. [2021-08-06]. https: ∥www.bp.com/content/dam/bp/business-sites/en/global/corporate/pdfs/energy-ec onomics/energy-outlook/bp-energy-outlook-2020.pdf.

SU Meirong, CHEN Chen, YANG Zhifeng. Urban energy structure optimization at the sector scale: considering environmental impact based on life cycle assessment [J]. Journal of Cleaner Production, 2016, 112(2): 1464-1474.

杨忠灿, 刘家利, 王志超, 等. 半焦着火性能评价指标在电站锅炉上的应用 [J]. 热力发电, 2017, 46(3): 109-113, 120.

YANG Zhongcan, LIU Jiali, WANG Zhichao, et al. Application of ignition performance evaluation indicator of semi-coke in utility boilers [J]. Thermal Power Generation, 2017, 46(3): 109-113, 120.

刘靖, 何选明, 李翠华, 等. 兰炭特性及应用研究进展 [J]. 洁净煤技术, 2018, 24(4): 7-12.

LIU Jing, HE Xuanming, LI Cuihua, et al. Research on the characteristic and application of semi-coke [J]. Clean Coal Technology, 2018, 24(4): 7-12.

王越, 张子良. 半焦基本性质及其利用途径分析 [J]. 煤质技术, 2018(2): 1-5.

WANG Yue, ZHANG Ziliang. Analysis on semi-coke basic properties and utilization path [J]. Goal Quality Technology, 2018(2): 1-5.

ZHANG Jinping, JIA Xiaowei, WANG Chang'an, et al. Experimental investigation on combustion and NO formation characteristics of semi-coke and bituminous coal blends [J]. Fuel, 2019, 247: 87-96.

WANG Pengqian, WANG Chang'an, DU Yongbo, et al. Experiments and simulation on Co-combustion of semicoke and coal in a full-scale tangentially fired utility boiler [J]. Energy Fuels, 2019, 33(4): 3012-3027.

WANG Chang'an, FENG Qinqin, JIN Liyan, et al. Experimental and numerical study on co-combustion behaviors and NOx emission characteristics of semi-coke and coal in a tangentially fired utility boiler [J]. Journal of Thermal Science, 2021, 30(4): 1116-1131.

YAN Yonghong, SUN Liutao, PENG Zhengkang, et al. Effects of pyrolyzed semi-char blend ratio on coal combustion and pollution emission in a 0.35 MW pulverized coal-fired furnace [J]. Frontiers in Energy, 2021, 15(1): 78-90.

刘晓波. 红外节能材料提高链条锅炉煤炭利用率研究与应用 [J]. 能源与节能, 2021(9): 65-67.

LIU Xiaobo. Research and application of infrared energy-saving materials to improve coal utilization rate of chain boilers [J]. Energy and Energy Conservation, 2021(9): 65-67.

刘晓波. 提高链条锅炉煤炭燃烧效率的节能技术研究与应用 [J]. 节能与环保, 2021(6): 88-90.

LIU Xiaobo. Research and application of energy saving technology to improve coal combustion efficiency of chain boiler [J]. Energy Conservation Environmental Protection, 2021(6): 88-90.

DU Yongbo, WANG Chang'an, WANG Pengqian, et al. Computational fluid dynamics investigation on the effect of co-firing semi-coke and bituminous coal in a 300 MW tangentially fired boiler [J]. Proceedings of the Institution of Mechanical Engineers: Part A Journal of Power and Energy, 2019, 233(2): 221-231.

SUN Liutao, YAN Yonghong, SUN Rui, et al. Influence of nozzle height to width ratio on ignition and NOx emission characteristics of semicoke/bituminous coal blends in a 300 kW pulverized coal-fired furnace [J]. Frontiers in Energy, 2021, 15(2): 431-448.

彭政康. 半焦/烟煤混燃特性试验研究 [D]. 哈尔滨: 哈尔滨工业大学, 2020.

王志超, 王莹燕, 李彦军, 等. 兰炭燃烧特性及其在660 MW机组上的大比例掺烧试验研究 [J]. 华电技术, 2020, 42(7): 35-41.

WANG Zhichao, WANG Yingyan, LI Yanjun, et al. Combustion characteristics of semi-coke and its large-proportion co-combustion experimental research in a 660 MW unit [J]. Huadian Technology, 2020, 42(7): 35-41.

李静渊, 柯希玮, 蒋苓, 等. 兰炭循环流化床锅炉燃烧性能模型研究 [J/OL]. 洁净煤技术 [2021-08-24]. http: ∥kns.cnki.net/kcms/detail/11.3676.TD.2021 0624.1543.002.html.

LI Jingyuan, KE Xiwei, JIANG Ling, et al. Research on the combustion performance of a semi-coke fired circulating fluidized bed boiler based on 1-D CFBB model [J/OL]. Clean Coal Technology [2021-08-24]. http: ∥kns.cnki.net/kcms/detail/11.3676.TD.2021 0624.1543.002.html.

STARLEY G P, SLAUGHTER D M, MUNRO J M, et al. Formation and control of no emissions from coal-fired spreader-stoker boilers [J]. Symposium(International)on Combustion, 1982, 19(1): 1311-1320.

STARLEY G P, BRADSHAW F W, CARREL C S, et al. The fate of fuel nitrogen in coal-fired spreader stokers [J]. Combustion Science and Technology, 1985, 43(1/2): 21-37.

GREEN A S, WAITE M L. The redesign of chain grate stoker links to reduce pollutant emissions: aerodynamic design [J]. Fuel, 2004, 83(10): 1391-1395.

GREEN A S, WAITE M L. Designing chain grate stoker links to reduce polluting and particulate emissions [J]. Journal of the Energy Institute, 2017, 90(3): 424-430.

姜姗. 炉拱结构及配风方式对链条锅炉燃烧特性的影响规律研究 [D]. 哈尔滨: 哈尔滨理工大学, 2017.

兰小俊. 层燃锅炉半焦再燃的数值模拟 [D]. 哈尔滨: 哈尔滨工程大学, 2012.

史俊高, 安晓熙, 房有为. 生物质锅炉脱硝技术现状及研究进展 [J]. 化学工业, 2019, 37(3): 52-58.

SHI Jungao, AN Xiaoxi, FANG Youwei. Status and research progress of denitrification technology in biomass boilers [J]. Chemical Industry, 2019, 37(3): 52-58.

杨忠灿, 王志超, 李炎, 等. 电站煤粉锅炉掺烧兰炭试验研究 [J]. 锅炉技术, 2017, 48(3): 31-36.

YANG Zhongcan, WANG Zhichao, LI Yan, et al. Experimental research on pulverized coal power station blending with semi-coke [J]. Boiler Technology, 2017, 48(3): 31-36.

杜海亮, 张品, 罗永浩, 等. 不同配风方式下层燃炉煤层NOx析出特性研究 [J]. 热能动力工程, 2013, 28(1): 86-92, 113-114.

DU Hailiang, ZHANG Pin, LUO Yonghao, et al. Study of the precipitation characteristics of NOx in the coal bed of a laminar combustion boiler under different air distribution modes [J]. Journal of Engineering for Thermal Energy and Power, 2013, 28(1): 86-92, 113-114.

刘奇, 王义德. 链条炉运行参数对燃烧及NOx排放的影响 [J]. 工业锅炉, 2020(2): 11-16, 20.

LIU Qi, WANG Yide. Influence of operation parameters of chain grate on combustion and NOx emission [J]. Industrial Boiler, 2020(2): 11-16, 20.

赵阳, 陈炳安, 王鹏翔, 等. 大比例半焦煤粉掺混燃烧排放数值模拟研究 [J]. 华电技术, 2020, 42(10): 64-72.

ZHAO Yang, CHEN Bing'an, WANG Pengxiang, et al. Numerical study of the emission from co-combustion of large-proportion semi-coke and pulverized coal [J]. Huadian Technology, 2020, 42(10): 64-72.

陶子宸, 王长安, 王鹏乾, 等. 半焦富氧燃烧扩散效应研究 [J]. 西安交通大学学报, 2018, 52(9): 155-161.

TAO Zichen, WANG Chang'an, WANG Pengqian, et al. Study of diffusional effect in oxy-fuel combustion of semi-coke [J]. Journal of Xi'an Jiaotong University, 2018, 52(9): 155-161.

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Operational Characteristics and Thermodynamic Calculation Method for Chain-Grate Stokers under Low-Pressure Conditions

A Compound Combustion Technology for Gasoline Direct Injection Engine

Influence of Structural Parameters on the Summer Operational Characteristics of a Three-Tower-in-One Indirect Air-Cooling System

Knowledge Graph Representation Learning Driven by Semantic Discrimination and Subgraph Integration

Bi-Level Multi-Obj ective Optimization of a Wind-Solar Coupled Hydrogen Production System Based on the Synergy of Hybrid Electrolyzer Arrays

Related Author

ZONG Siyu

DU Yongbo

XU Qiong

ZHANG Jingkun

DA Yaodong

CHE Defu

牟江峰

刘德新

Related Institution

School of Energy and Power Engineering, Xi’an Jiaotong University

China Special Equipment Inspection and Research Institute

State Key Laboratory of Engines, Tianjin University

⁰

Numerical Simulation Study on NOx Emission Characteristics and the Optimization of Air Induction of Coal-Fired Chain Boiler Blended with Semi-Coke

DOI：10.7652/xjtuxb202204001

摘要

Abstract

关键词

Keywords

references

Numerical Simulation Study on NO_x Emission Characteristics and the Optimization of Air Induction of Coal-Fired Chain Boiler Blended with Semi-Coke