IDEAS home Printed from https://ideas.repec.org/a/eee/energy/v251y2022ics0360544222007782.html
   My bibliography  Save this article

Experimental study on NO emission and ash deposition during oxy-fuel combustion of high-alkali coal under oxygen-staged conditions

Author

Listed:
  • Wang, Chang'an
  • Zhao, Lin
  • Sun, Ruijin
  • Zhou, Lei
  • Jin, Liyan
  • Che, Defu

Abstract

The oxygen-staged combustion is an effective strategy to reduce NO emission, but its effects on ash deposition in oxy-fuel combustion of Zhundong high-alkali coal still remain unclear. This paper simultaneously focused on the NO emission and ash deposition during the oxygen-staged oxy-fuel combustion of Zhundong coal using a vertical two-stage furnace system. The air- and oxygen-staged combustion were compared and the impacts of oxygen content and stoichiometric ratio in primary zone (SR1) in oxygen-staged combustion were further evaluated. The results show that compared to air-staged combustion, the oxygen-staged case in oxy-fuel combustion leads to smaller conversion ratio of fuel-N to NO (XNO) and smaller mass of ash deposit. Under oxygen-staged conditions, both the XNO and deposit mass have an upward trend as the oxygen content increases (15%–50%). About 20 mg more ash could be collected for every 10% increase in oxygen content. The XNO increases when SR1 gets elevated from 0.5 to 1.2, however, the deposit mass exhibits a downtrend at SR1 ≤ 0.9 and becomes nearly independent of oxygen supply when the SR1 further increases. The SR1 of 0.9 is a reasonable choice, and some measures should be taken to alleviate the ash-related problems if smaller SR1 is needed.

Suggested Citation

  • 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).
    • Handle: RePEc:eee:energy:v:251:y:2022:i:c:s0360544222007782
    DOI: 10.1016/j.energy.2022.123875
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S0360544222007782
    Download Restriction: Full text for ScienceDirect subscribers only
    File URL: https://libkey.io/10.1016/j.energy.2022.123875?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    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. Choi, Minsung & Kim, Kibeom & Li, Xinzhuo & Deng, Kaiwen & Park, Yeseul & Seo, Minseok & Sung, Yonmo & Choi, Gyungmin, 2020. "Strategic combustion technology with exhaust tube vortex flame: Combined effect of biomass co-firing and air-staged combustion on combustion characteristics and ash deposition," Energy, Elsevier, vol. 203(C).
    2. Riaza, J. & Gil, M.V. & Álvarez, L. & Pevida, C. & Pis, J.J. & Rubiera, F., 2012. "Oxy-fuel combustion of coal and biomass blends," Energy, Elsevier, vol. 41(1), pages 429-435.
    3. Liu, Zhuo & Li, Jianbo & Long, Xiaofei & Lu, Xiaofeng, 2022. "Mechanisms and characteristics of ash layer formation on bed particles during circulating fluidized bed combustion of Zhundong lignite," Energy, Elsevier, vol. 245(C).
    4. Wang, Pengqian & Wang, Chang'an & Yuan, Maobo & Wang, Chaowei & Zhang, Jinping & Du, Yongbo & Tao, Zichen & Che, Defu, 2020. "Experimental evaluation on co-combustion characteristics of semi-coke and coal under enhanced high-temperature and strong-reducing atmosphere," Applied Energy, Elsevier, vol. 260(C).
    5. Engin, Berrin & Kayahan, Ufuk & Atakül, Hüsnü, 2020. "A comparative study on the air, the oxygen-enriched air and the oxy-fuel combustion of lignites in CFB," Energy, Elsevier, vol. 196(C).
    6. 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.
    7. Li, Zixiang & Miao, Zhengqing, 2019. "Primary air ratio affects coal utilization mode and NOx emission in lignite pulverized boiler," Energy, Elsevier, vol. 187(C).
    8. 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.
    9. Lasek, Janusz A. & Janusz, Marcin & Zuwała, Jarosław & Głód, Krzysztof & Iluk, Andrzej, 2013. "Oxy-fuel combustion of selected solid fuels under atmospheric and elevated pressures," Energy, Elsevier, vol. 62(C), pages 105-112.
    10. Andreoni, Valeria, 2022. "Drivers of coal consumption changes: A decomposition analysis for Chinese regions," Energy, Elsevier, vol. 242(C).
    11. Stimpson, Curtis K. & Brunner, David R. & Reeder, Todd A. & Tree, Dale R., 2013. "Analysis of deposits collected under staged conditions in a pulverized coal reactor for eight US coals," Applied Energy, Elsevier, vol. 110(C), pages 65-72.
    Full references (including those not matched with items on IDEAS)

    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. Wang, Chaowei & Wang, Chang'an & Feng, Qinqin & Mao, Qisen & Gao, Xinyue & Du, Yongbo & Li, Guangyu & Che, Defu, 2022. "Experimental evaluation on NOx formation and burnout characteristics of oxy-fuel co-combustion of ultra-low volatile carbon-based solid fuels and bituminous coal," Energy, Elsevier, vol. 248(C).
    2. Zhou, Mengmeng & Wang, Shuai & Luo, Kun & Fan, Jianren, 2022. "Three-dimensional modeling study of the oxy-fuel co-firing of coal and biomass in a bubbling fluidized bed," Energy, Elsevier, vol. 247(C).
    3. Betancur, Yuli & López, Diana & Feng, Jie & Du, Zhen-Yi & Li, Wen-Ying, 2021. "Influence of potassium carbonate catalysis and pre-treatment atmosphere on the textural, structural, and chemical properties of high and low rank coals blended with biomass and their reactivity under ," Energy, Elsevier, vol. 220(C).
    4. Seddighi, Sadegh & Clough, Peter T. & Anthony, Edward J. & Hughes, Robin W. & Lu, Ping, 2018. "Scale-up challenges and opportunities for carbon capture by oxy-fuel circulating fluidized beds," Applied Energy, Elsevier, vol. 232(C), pages 527-542.
    5. Choi, Minsung & Park, Yeseul & Li, Xinzhuo & Kim, Kibeom & Sung, Yonmo & Hwang, Taegam & Choi, Gyungmin, 2021. "Numerical evaluation of pulverized coal swirling flames and NOx emissions in a coal-fired boiler: Effects of co- and counter-swirling flames and coal injection modes," Energy, Elsevier, vol. 217(C).
    6. Moon, Ji-Hong & Jo, Sung-Ho & Park, Sung Jin & Khoi, Nguyen Hoang & Seo, Myung Won & Ra, Ho Won & Yoon, Sang-Jun & Yoon, Sung-Min & Lee, Jae-Goo & Mun, Tae-Young, 2019. "Carbon dioxide purity and combustion characteristics of oxy firing compared to air firing in a pilot-scale circulating fluidized bed," Energy, Elsevier, vol. 166(C), pages 183-192.
    7. Wang, Chaowei & Wang, Chang'an & Luo, Maoyun & Zhao, Lin & Wang, Pengqian & Hou, Yujie & Zhao, Pengbo & Che, Defu, 2023. "Co-gasification behaviors of various coal-based solid fuels blends at initial stage of oxy-fuel Co-combustion," Energy, Elsevier, vol. 271(C).
    8. Tang, YuTing & Ma, XiaoQian & Lai, ZhiYi & Fan, Yunxiang, 2015. "Thermogravimetric analyses of co-combustion of plastic, rubber, leather in N2/O2 and CO2/O2 atmospheres," Energy, Elsevier, vol. 90(P1), pages 1066-1074.
    9. Jang, Hayoung & Jeong, Byongug & Zhou, Peilin & Ha, Seungman & Nam, Dong, 2021. "Demystifying the lifecycle environmental benefits and harms of LNG as marine fuel," Applied Energy, Elsevier, vol. 292(C).
    10. Bai, Y. & Zhou, D.Q. & Zhou, P., 2012. "Modelling and analysis of oil import tariff and stockpile policies for coping with supply disruptions," Applied Energy, Elsevier, vol. 97(C), pages 84-90.
    11. Lv, You & Lv, Xuguang & Fang, Fang & Yang, Tingting & Romero, Carlos E., 2020. "Adaptive selective catalytic reduction model development using typical operating data in coal-fired power plants," Energy, Elsevier, vol. 192(C).
    12. Jiahang Zhang & Jianguo Zhu & Jingzhang Liu, 2023. "Preheating Analysis of Semi-Coke in a Circulating Fluidized Bed and Its Kinetic Characteristics," Energies, MDPI, vol. 16(10), pages 1-16, May.
    13. Tokarski, Stanisław & Głód, Krzysztof & Ściążko, Marek & Zuwała, Jarosław, 2015. "Comparative assessment of the energy effects of biomass combustion and co-firing in selected technologies," Energy, Elsevier, vol. 92(P1), pages 24-32.
    14. Zhang, Xiaoyu & Zhu, Shujun & Zhu, Jianguo & Liu, Yuhua & Zhang, Jiahang & Hui, Jicheng & Ding, Hongliang & Cao, Xiaoyang & Lyu, Qinggang, 2023. "Preheating and combustion characteristics of anthracite under O2/N2, O2/CO2 and O2/CO2/H2O atmospheres," Energy, Elsevier, vol. 274(C).
    15. Kai Lei & Buqing Ye & Jin Cao & Rui Zhang & Dong Liu, 2017. "Combustion Characteristics of Single Particles from Bituminous Coal and Pine Sawdust in O 2 /N 2 , O 2 /CO 2 , and O 2 /H 2 O Atmospheres," Energies, MDPI, vol. 10(11), pages 1-12, October.
    16. Li, Fenghai & Liu, Quanrun & Li, Meng & Fang, Yitian, 2018. "Understanding fly-ash formation during fluidized-bed gasification of high-silicon-aluminum coal based on its characteristics," Energy, Elsevier, vol. 150(C), pages 142-152.
    17. Clemens F. Patzschke & Husain Bahzad & Matthew E. Boot-Handford & Paul S. Fennell, 2020. "Simulation of a 100-MW solar-powered thermo-chemical air separation system combined with an oxy-fuel power plant for bio-energy with carbon capture and storage (BECCS)," Mitigation and Adaptation Strategies for Global Change, Springer, vol. 25(4), pages 539-557, April.
    18. Díez, Luis I. & García-Mariaca, Alexander & Canalís, Paula & Llera, Eva, 2023. "Oxy-combustion characteristics of torrefied biomass and blends under O2/N2, O2/CO2 and O2/CO2/H2O atmospheres," Energy, Elsevier, vol. 284(C).
    19. 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.
    20. Tan, Peng & Xia, Ji & Zhang, Cheng & Fang, Qingyan & Chen, Gang, 2016. "Modeling and reduction of NOX emissions for a 700 MW coal-fired boiler with the advanced machine learning method," Energy, Elsevier, vol. 94(C), pages 672-679.

    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:energy:v:251:y:2022:i:c:s0360544222007782. 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.journals.elsevier.com/energy .

    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.