IDEAS home Printed from https://ideas.repec.org/a/eee/appene/v87y2010i4p1217-1230.html
   My bibliography  Save this article

Measurement of gas species, temperatures, char burnout, and wall heat fluxes in a 200-MWe lignite-fired boiler at different loads

Author

Listed:
  • Li, Zhengqi
  • Jing, Jianping
  • Liu, Guangkui
  • Chen, Zhichao
  • Liu, Chunlong

Abstract

We measured various operational parameters of a 200-MWe, wall-fired, lignite utility boiler under different loads. The parameters measured were gas temperature, gas species concentration, char burnout, component release rates (C, H and N), furnace temperature, heat flux, and boiler efficiency. Cold air experiments of a single burner were conducted in the laboratory. A double swirl flow pulverized-coal burner has two ring recirculation zones that start in the secondary air region of the burner. With increasing secondary air flow, the air flow axial velocity increases, the maximum values for the radial velocity, tangential velocity, and turbulence intensity all increase, and there are slight increases in the air flow swirl intensity and the recirculation zone size. With increasing load gas, the temperature and CO concentration in the central region of burner decrease, while O2 concentration, NOx concentration, char burnout, and component release rates of C, H, and N increase. Pulverized-coal ignites farther into the burner, in the secondary air region. Gas temperature, O2 concentration, NOx concentration, char burnout and component release rates of C, H, and N all increase. Furthermore, CO concentration varies slightly and pulverized-coal ignites closer. In the side wall region, gas temperature, O2 concentration, and NOx concentration all increase, but CO concentration varies only slightly. In the bottom row burner region the furnace temperature and heat flux increase appreciably, but the increase become more obvious in the middle and top row burner regions and in the burnout region. Compared with a 120-MWe load, the mean NOx emission at the air preheater exits for 190-MWe load increases from 589.5Â mg/m3 (O2Â =Â 6%) to 794.6Â mg/m3 (O2Â =Â 6%), and the boiler efficiency increases from 90.73% to 92.45%.

Suggested Citation

  • Li, Zhengqi & Jing, Jianping & Liu, Guangkui & Chen, Zhichao & Liu, Chunlong, 2010. "Measurement of gas species, temperatures, char burnout, and wall heat fluxes in a 200-MWe lignite-fired boiler at different loads," Applied Energy, Elsevier, vol. 87(4), pages 1217-1230, April.
    • Handle: RePEc:eee:appene:v:87:y:2010:i:4:p:1217-1230
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S0306-2619(09)00231-1
    Download Restriction: Full text for ScienceDirect subscribers only
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    References listed on IDEAS

    as
    1. Tsumura, Toshikazu & Okazaki, Hirofumi & Dernjatin, Pauli & Savolainen, Kati, 2003. "Reducing the minimum load and NOx emissions for lignite-fired boiler by applying a stable-flame concept," Applied Energy, Elsevier, vol. 74(3-4), pages 415-424, March.
    2. Li, Sen & Xu, Tongmo & Hui, Shien & Wei, Xiaolin, 2009. "NOx emission and thermal efficiency of a 300Â MWe utility boiler retrofitted by air staging," Applied Energy, Elsevier, vol. 86(9), pages 1797-1803, September.
    3. Kouprianov, V. I. & Tanetsakunvatana, V., 2003. "Optimization of excess air for the improvement of environmental performance of a 150 MW boiler fired with Thai lignite," Applied Energy, Elsevier, vol. 74(3-4), pages 445-453, March.
    Full references (including those not matched with items on IDEAS)

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Ti, Shuguang & Kuang, Min & Wang, Haopeng & Xu, Guangyin & Niu, Cong & Liu, Yannan & Wang, Zhenfeng, 2020. "Experimental combustion characteristics and NOx emissions at 50% of the full load for a 600-MWe utility boiler: Effects of the coal feed rate for various mills," Energy, Elsevier, vol. 196(C).
    2. Xu, Cheng & Xu, Gang & Zhao, Shifei & Zhou, Luyao & Yang, Yongping & Zhang, Dongke, 2015. "An improved configuration of lignite pre-drying using a supplementary steam cycle in a lignite fired supercritical power plant," Applied Energy, Elsevier, vol. 160(C), pages 882-891.
    3. Wang, Qingxiang & Chen, Zhichao & Che, Miaomiao & Zeng, Lingyan & Li, Zhengqi & Song, Minhang, 2016. "Effect of different inner secondary-air vane angles on combustion characteristics of primary combustion zone for a down-fired 300-MWe utility boiler with overfire air," Applied Energy, Elsevier, vol. 182(C), pages 29-38.
    4. Liang, Zengying & Ma, Xiaoqian & Lin, Hai & Tang, Yuting, 2011. "The energy consumption and environmental impacts of SCR technology in China," Applied Energy, Elsevier, vol. 88(4), pages 1120-1129, April.
    5. Chen, Zhichao & Wang, Qingxiang & Wang, Bingnan & Zeng, Lingyan & Che, Miaomiao & Zhang, Xin & Li, Zhengqi, 2017. "Anthracite combustion characteristics and NOx formation of a 300MWe down-fired boiler with swirl burners at different loads after the implementation of a new combustion system," Applied Energy, Elsevier, vol. 189(C), pages 133-141.
    6. Li, Zhengqi & Liu, Guangkui & Zhu, Qunyi & Chen, Zhichao & Ren, Feng, 2011. "Combustion and NOx emission characteristics of a retrofitted down-fired 660Â MWe utility boiler at different loads," Applied Energy, Elsevier, vol. 88(7), pages 2400-2406, July.
    7. Qiao, Yanyu & Li, Song & Jing, Xinjing & Chen, Zhichao & Fan, Subo & Li, Zhengqi, 2022. "Combustion and NOx formation characteristics from a 330 MWe retrofitted anthracite-fired utility boiler with swirl burner under deeply-staged-combustion," Energy, Elsevier, vol. 258(C).
    8. Wang, Hongshuai & Ouyang, Ziqu & Ding, Hongliang & Su, Kun & Zhang, Jinyang & Hu, Yujie, 2024. "Experimental study on the flexible peak shaving with pulverized coal self-preheating technology under load variability," Energy, Elsevier, vol. 289(C).
    9. Jing, Jianping & Li, Zhengqi & Zhu, Qunyi & Chen, Zhichao & Wang, Lin & Chen, Lizhe, 2011. "Influence of the outer secondary air vane angle on the gas/particle flow characteristics near the double swirl flow burner region," Energy, Elsevier, vol. 36(1), pages 258-267.
    10. Li, Zixiang & Miao, Zhengqing, 2019. "Primary air ratio affects coal utilization mode and NOx emission in lignite pulverized boiler," Energy, Elsevier, vol. 187(C).
    11. Jiang, Yu & Lee, Byoung-Hwa & Oh, Dong-Hun & Jeon, Chung-Hwan, 2022. "Influence of various air-staging on combustion and NOX emission characteristics in a tangentially fired boiler under the 50% load condition," Energy, Elsevier, vol. 244(PB).
    12. Chen, Zhichao & Li, Zhengqi & Zhu, Qunyi & Jing, Jianping, 2011. "Gas/particle flow and combustion characteristics and NOx emissions of a new swirl coal burner," Energy, Elsevier, vol. 36(2), pages 709-723.
    13. Li, Zhengqi & Zeng, Lingyan & Zhao, Guangbo & Shen, Shanping & Zhang, Fucheng, 2011. "Particle sticking behavior near the throat of a low-NOx axial-swirl coal burner," Applied Energy, Elsevier, vol. 88(3), pages 650-658, March.
    14. Wang, Qingxiang & Chen, Zhichao & Wang, Jiaquan & Zeng, Lingyan & Zhang, Xin & Li, Xiaoguang & Li, Zhengqi, 2018. "Effects of secondary air distribution in primary combustion zone on combustion and NOx emissions of a large-scale down-fired boiler with air staging," Energy, Elsevier, vol. 165(PB), pages 399-410.

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Li, Zhengqi & Liu, Guangkui & Zhu, Qunyi & Chen, Zhichao & Ren, Feng, 2011. "Combustion and NOx emission characteristics of a retrofitted down-fired 660Â MWe utility boiler at different loads," Applied Energy, Elsevier, vol. 88(7), pages 2400-2406, July.
    2. Hodžić, Nihad & Kazagić, Anes & Smajević, Izet, 2016. "Influence of multiple air staging and reburning on NOx emissions during co-firing of low rank brown coal with woody biomass and natural gas," Applied Energy, Elsevier, vol. 168(C), pages 38-47.
    3. Qiao, Yanyu & Li, Song & Jing, Xinjing & Chen, Zhichao & Fan, Subo & Li, Zhengqi, 2022. "Combustion and NOx formation characteristics from a 330 MWe retrofitted anthracite-fired utility boiler with swirl burner under deeply-staged-combustion," Energy, Elsevier, vol. 258(C).
    4. Liang, Zengying & Ma, Xiaoqian & Lin, Hai & Tang, Yuting, 2011. "The energy consumption and environmental impacts of SCR technology in China," Applied Energy, Elsevier, vol. 88(4), pages 1120-1129, April.
    5. Ma, Lun & Fang, Qingyan & Yin, Chungen & Wang, Huajian & Zhang, Cheng & Chen, Gang, 2019. "A novel corner-fired boiler system of improved efficiency and coal flexibility and reduced NOx emissions," Applied Energy, Elsevier, vol. 238(C), pages 453-465.
    6. Georgakellos, Dimitrios A., 2010. "Impact of a possible environmental externalities internalisation on energy prices: The case of the greenhouse gases from the Greek electricity sector," Energy Economics, Elsevier, vol. 32(1), pages 202-209, January.
    7. Sajad Koochakinia & Amir Ebrahimi-Moghadam & Mahdi Deymi-Dashtebayaz, 2022. "Techno-Environmental Analyses and Optimization of a Utility Boiler Based on Real Data," Sustainability, MDPI, vol. 14(5), pages 1-19, February.
    8. Li, Shiyuan & Xu, Mingxin & Jia, Lufei & Tan, Li & Lu, Qinggang, 2016. "Influence of operating parameters on N2O emission in O2/CO2 combustion with high oxygen concentration in circulating fluidized bed," Applied Energy, Elsevier, vol. 173(C), pages 197-209.
    9. Wang, Yanhong & Li, Xiaoyu & Mao, Tianqin & Hu, Pengfei & Li, Xingcan & GuanWang,, 2022. "Mechanism modeling of optimal excess air coefficient for operating in coal fired boiler," Energy, Elsevier, vol. 261(PA).
    10. Lv, Chengwei & Xu, Jiuping & Xie, Heping & Zeng, Ziqiang & Wu, Yimin, 2016. "Equilibrium strategy based coal blending method for combined carbon and PM10 emissions reductions," Applied Energy, Elsevier, vol. 183(C), pages 1035-1052.
    11. Ma, Jiao & Mu, Lan & Zhang, Zhikun & Wang, Zhuozhi & Shen, Boxiong & Zhang, Lei & Li, Aimin, 2020. "The effects of the modification of biodegradation and the interaction of bulking agents on the combustion characteristics of biodried products derived from municipal organic wastes," Energy, Elsevier, vol. 209(C).
    12. Elbaz, A.M. & Moneib, H.A. & Shebil, K.M. & Roberts, W.L., 2019. "Low NOX - LPG staged combustion double swirl flames," Renewable Energy, Elsevier, vol. 138(C), pages 303-315.
    13. Żaklin Grądz & Waldemar Wójcik & Konrad Gromaszek & Andrzej Kotyra & Saule Smailova & Aigul Iskakova & Bakhyt Yeraliyeva & Saule Kumargazhanova & Baglan Imanbek, 2023. "Application of Fuzzy Neural Networks in Combustion Process Diagnostics," Energies, MDPI, vol. 17(1), pages 1-19, December.
    14. Ling, Zhongqian & Ling, Bo & Kuang, Min & Li, Zhengqi & Lu, Ye, 2017. "Comparison of airflow, coal combustion, NOx emissions, and slagging characteristics among three large-scale MBEL down-fired boilers manufactured at different times," Applied Energy, Elsevier, vol. 187(C), pages 689-705.
    15. Fan, Weidong & Lin, Zhengchun & Li, Youyi & Zhang, Mingchuan, 2010. "Experimental flow field characteristics of OFA for large-angle counter flow of fuel-rich jet combustion technology," Applied Energy, Elsevier, vol. 87(8), pages 2737-2745, August.
    16. Taehyun Lee & Eungsu Han & Un-Chul Moon & Kwang Y. Lee, 2020. "Supplementary Control of Air–Fuel Ratio Using Dynamic Matrix Control for Thermal Power Plant Emission," Energies, MDPI, vol. 13(1), pages 1-15, January.
    17. Yingai Jin & Yanwei Sun & Yuanbo Zhang & Zhipeng Jiang, 2022. "Research on Air Distribution Control Strategy of Supercritical Boiler," Energies, MDPI, vol. 16(1), pages 1-19, December.
    18. Wang, Chang'an & Zhao, Lin & Sun, Ruijin & Zhou, Lei & Jin, Liyan & Che, Defu, 2022. "Experimental study on NO emission and ash deposition during oxy-fuel combustion of high-alkali coal under oxygen-staged conditions," Energy, Elsevier, vol. 251(C).
    19. Anufriev, I.S., 2021. "Review of water/steam addition in liquid-fuel combustion systems for NOx reduction: Waste-to-energy trends," Renewable and Sustainable Energy Reviews, Elsevier, vol. 138(C).
    20. Hyunbin Jo & Kiseop Kang & Jongkeun Park & Changkook Ryu & Hyunsoo Ahn & Younggun Go, 2019. "Optimization of Air Distribution to Reduce NOx Emission and Unburned Carbon for the Retrofit of a 500 MWe Tangential-Firing Coal Boiler," Energies, MDPI, vol. 12(17), pages 1-20, August.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:eee:appene:v:87:y:2010:i:4:p:1217-1230. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Catherine Liu (email available below). General contact details of provider: http://www.elsevier.com/wps/find/journaldescription.cws_home/405891/description#description .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.