IDEAS home Printed from https://ideas.repec.org/a/eee/energy/v183y2019icp1233-1243.html
   My bibliography  Save this article

Numerical simulation of coal gasification in molten slag: Gas-liquid interaction characteristic

Author

Listed:
  • Duan, Wenjun
  • Gao, Yunke
  • Yu, Qingbo
  • Wu, Tianwei
  • Wang, Zhimei

Abstract

The high quality waste heat recovery of the molten blast furnace slag was necessary and urgent. In this paper, the flow characteristic of the molten slag reactor was investigated by numerical simulation. Firstly, the three-dimensional model was established for investigating the gas-liquid two-phase flow. The gas-liquid flow was modeled to be turbulent, which was described by the RNG k-ε model, and the interface of gas and liquid was conducted by the VOF model. Secondly, the top-submerged cold experiment system was constructed to validate the accuracy of the simulation model. Thirdly, the bubble behavior, gas phase distribution and molten slag motion were investigated. The bubble in the reactor would go through five stages and the maximum gas fraction reached about 4.87% at 0.75s. Meanwhile, the gas phase distribution and molten slag motion were closely related to the bubble behavior. Ultimately, the matrix analysis method was applied to obtain the optimal parameters of the reactor. The optimal condition improved the flow behavior in the molten BFS reactor significantly. The present results of the simulation provided an insight for the gas-liquid two-phase flow in molten slag reactor, which would provide the theoretical guidance for industrial applications.

Suggested Citation

  • Duan, Wenjun & Gao, Yunke & Yu, Qingbo & Wu, Tianwei & Wang, Zhimei, 2019. "Numerical simulation of coal gasification in molten slag: Gas-liquid interaction characteristic," Energy, Elsevier, vol. 183(C), pages 1233-1243.
    • Handle: RePEc:eee:energy:v:183:y:2019:i:c:p:1233-1243
    DOI: 10.1016/j.energy.2019.06.178
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S0360544219313167
    Download Restriction: Full text for ScienceDirect subscribers only
    File URL: https://libkey.io/10.1016/j.energy.2019.06.178?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. Luo, Siyi & Yi, Chuijie & Zhou, Yangmin, 2013. "Bio-oil production by pyrolysis of biomass using hot blast furnace slag," Renewable Energy, Elsevier, vol. 50(C), pages 373-377.
    2. Yongqi Sun & Zuotai Zhang & Lili Liu & Xidong Wang, 2014. "Multi-Stage Control of Waste Heat Recovery from High Temperature Slags Based on Time Temperature Transformation Curves," Energies, MDPI, vol. 7(3), pages 1-12, March.
    3. Duan, Wenjun & Yu, Qingbo & Wang, Zhimei & Liu, Junxiang & Qin, Qin, 2018. "Life cycle and economic assessment of multi-stage blast furnace slag waste heat recovery system," Energy, Elsevier, vol. 142(C), pages 486-495.
    4. Li, Yuan & Zhu, Lei, 2014. "Cost of energy saving and CO2 emissions reduction in China’s iron and steel sector," Applied Energy, Elsevier, vol. 130(C), pages 603-616.
    5. Duan, Wenjun & Yu, Qingbo & Xie, Huaqing & Qin, Qin, 2017. "Pyrolysis of coal by solid heat carrier-experimental study and kinetic modeling," Energy, Elsevier, vol. 135(C), pages 317-326.
    6. Zhang, Hui & Wang, Hong & Zhu, Xun & Qiu, Yong-Jun & Li, Kai & Chen, Rong & Liao, Qiang, 2013. "A review of waste heat recovery technologies towards molten slag in steel industry," Applied Energy, Elsevier, vol. 112(C), pages 956-966.
    7. Sun, Yongqi & Seetharaman, Seshadri & Zhang, Zuotai, 2018. "Integrating biomass pyrolysis with waste heat recovery from hot slags via extending the C-loops: Product yields and roles of slags," Energy, Elsevier, vol. 149(C), pages 792-803.
    8. Duan, Wenjun & Yu, Qingbo & Liu, Junxiang & Wu, Tianwei & Yang, Fan & Qin, Qin, 2016. "Experimental and kinetic study of steam gasification of low-rank coal in molten blast furnace slag," Energy, Elsevier, vol. 111(C), pages 859-868.
    9. Wu, Xuecheng & Zhao, Liang & Zhang, Yongxin & Zhao, Lingjie & Zheng, Chenghang & Gao, Xiang & Cen, Kefa, 2016. "Cost and potential of energy conservation and collaborative pollutant reduction in the iron and steel industry in China," Applied Energy, Elsevier, vol. 184(C), pages 171-183.
    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. Shen, Zhongjie & Zhou, Jie & Liu, Xia & Liang, Qinfeng & Liu, Haifeng, 2020. "A deep insight on the correlation between slag viscosity fluctuation and decomposition of sulfur-bearing minerals in the entrained flow gasifier," Energy, Elsevier, vol. 196(C).
    2. Xie, Huaqing & Li, Rongquan & Yu, Zhenyu & Wang, Zhengyu & Yu, Qingbo & Qin, Qin, 2020. "Combined steam/dry reforming of bio-oil for H2/CO syngas production with blast furnace slag as heat carrier," Energy, Elsevier, vol. 200(C).

    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. Yao, Xin & Liu, Yang & Yu, Qingbo & Wang, Shuhuan, 2023. "Energy consumption of two-stage system of biomass pyrolysis and bio-oil reforming to recover waste heat from granulated BF slag," Energy, Elsevier, vol. 273(C).
    2. Duan, Wenjun & Yu, Qingbo & Wang, Zhimei & Liu, Junxiang & Qin, Qin, 2018. "Life cycle and economic assessment of multi-stage blast furnace slag waste heat recovery system," Energy, Elsevier, vol. 142(C), pages 486-495.
    3. Yongqi Sun & Zuotai Zhang & Lili Liu & Xidong Wang, 2015. "Heat Recovery from High Temperature Slags: A Review of Chemical Methods," Energies, MDPI, vol. 8(3), pages 1-19, March.
    4. Wu, Junjun & Tan, Yu & Li, Peng & Wang, Hong & Zhu, Xun & Liao, Qiang, 2022. "Centrifugal-Granulation-Assisted thermal energy recovery towards low-carbon blast furnace slag treatment: State of the art and future challenges," Applied Energy, Elsevier, vol. 325(C).
    5. Suopajärvi, Hannu & Umeki, Kentaro & Mousa, Elsayed & Hedayati, Ali & Romar, Henrik & Kemppainen, Antti & Wang, Chuan & Phounglamcheik, Aekjuthon & Tuomikoski, Sari & Norberg, Nicklas & Andefors, Alf , 2018. "Use of biomass in integrated steelmaking – Status quo, future needs and comparison to other low-CO2 steel production technologies," Applied Energy, Elsevier, vol. 213(C), pages 384-407.
    6. Wang, Can & Zheng, Xinzhu & Cai, Wenjia & Gao, Xue & Berrill, Peter, 2017. "Unexpected water impacts of energy-saving measures in the iron and steel sector: Tradeoffs or synergies?," Applied Energy, Elsevier, vol. 205(C), pages 1119-1127.
    7. An, Runying & Yu, Biying & Li, Ru & Wei, Yi-Ming, 2018. "Potential of energy savings and CO2 emission reduction in China’s iron and steel industry," Applied Energy, Elsevier, vol. 226(C), pages 862-880.
    8. Huang, Jintao & Lyu, Sha & Han, He & Wang, Yanjiang & Sun, Haoyang & Su, Jingtao & Liu, Yidong & Min, Yonggang & Sun, Dazhi, 2022. "Enhanced looping biomass/vapour gasification utilizing waste heat from molten copper slags," Energy, Elsevier, vol. 252(C).
    9. Zhang, Huining & Dong, Jianping & Wei, Chao & Cao, Caifang & Zhang, Zuotai, 2022. "Future trend of terminal energy conservation in steelmaking plant: Integration of molten slag heat recovery-combustible gas preparation from waste plastics and CO2 emission reduction," Energy, Elsevier, vol. 239(PE).
    10. Zhu, Lei & Zhang, Xiao-Bing & Li, Yuan & Wang, Xu & Guo, Jianxin, 2017. "Can an emission trading scheme promote the withdrawal of outdated capacity in energy-intensive sectors? A case study on China's iron and steel industry," Energy Economics, Elsevier, vol. 63(C), pages 332-347.
    11. Wu, Xuecheng & Zhao, Liang & Zhang, Yongxin & Zhao, Lingjie & Zheng, Chenghang & Gao, Xiang & Cen, Kefa, 2016. "Cost and potential of energy conservation and collaborative pollutant reduction in the iron and steel industry in China," Applied Energy, Elsevier, vol. 184(C), pages 171-183.
    12. Wang, Chunyan & Wang, Ranran & Hertwich, Edgar & Liu, Yi, 2017. "A technology-based analysis of the water-energy-emission nexus of China’s steel industry," Resources, Conservation & Recycling, Elsevier, vol. 124(C), pages 116-128.
    13. Duan, Wenjun & Wu, Qinting & Li, Peishi & Cheng, Peiwen, 2022. "Techno-economic analysis of a novel full-chain blast furnace slag utilization system," Energy, Elsevier, vol. 242(C).
    14. Wang, Xiaoyang & Yu, Biying & An, Runying & Sun, Feihu & Xu, Shuo, 2022. "An integrated analysis of China’s iron and steel industry towards carbon neutrality," Applied Energy, Elsevier, vol. 322(C).
    15. Xie, Huaqing & Li, Rongquan & Yu, Zhenyu & Wang, Zhengyu & Yu, Qingbo & Qin, Qin, 2020. "Combined steam/dry reforming of bio-oil for H2/CO syngas production with blast furnace slag as heat carrier," Energy, Elsevier, vol. 200(C).
    16. Duan, Wenjun & Yu, Qingbo & Xie, Huaqing & Qin, Qin, 2017. "Pyrolysis of coal by solid heat carrier-experimental study and kinetic modeling," Energy, Elsevier, vol. 135(C), pages 317-326.
    17. Vögele, Stefan & Grajewski, Matthias & Govorukha, Kristina & Rübbelke, Dirk, 2020. "Challenges for the European steel industry: Analysis, possible consequences and impacts on sustainable development," Applied Energy, Elsevier, vol. 264(C).
    18. Matino, Ismael & Colla, Valentina & Baragiola, Stefano, 2017. "Quantification of energy and environmental impacts in uncommon electric steelmaking scenarios to improve process sustainability," Applied Energy, Elsevier, vol. 207(C), pages 543-552.
    19. Wu, Junnian & Pu, Guangying & Guo, Yan & Lv, Jingwen & Shang, Jiangwei, 2018. "Retrospective and prospective assessment of exergy, life cycle carbon emissions, and water footprint for coking network evolution in China," Applied Energy, Elsevier, vol. 218(C), pages 479-493.
    20. Sun, Yongqi & Seetharaman, Seshadri & Zhang, Zuotai, 2018. "Integrating biomass pyrolysis with waste heat recovery from hot slags via extending the C-loops: Product yields and roles of slags," Energy, Elsevier, vol. 149(C), pages 792-803.

    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:183:y:2019:i:c:p:1233-1243. 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.