IDEAS home Printed from https://ideas.repec.org/a/eee/energy/v279y2023ics0360544223014937.html
   My bibliography  Save this article

Study on recovery of residual carbon from coal gasification fine slag and the influence of oxidation on its characteristics

Author

Listed:
  • Ren, Liang
  • Gong, Yan
  • Wang, Xingjun
  • Guo, Qinghua
  • Yu, Guangsuo

Abstract

Coal gasification fine slag (CGFS) is a kind of solid waste that is difficult to separate and utilize. In this work, ultrasonic-assisted flotation was used to recover residual carbon (RC) from CGFS. The ultrasonic treatment not only promotes the separation of RC and ash, but also improves the surface hydrophobicity of CGFS. Compared with conventional flotation, the loss on ignition (LOI) of concentrates and flotation perfect index obtained by ultrasonic-assisted flotation were increased by 12.21% and 4.57%, respectively. In addition, the RC was modified by air and steam. The characterization results of the samples show that air oxidation can significantly improve the oxygen-containing groups on the RC surface, especially the CO groups, and steam treatment is more conducive to increase the disorder of carbon microstructure. Furthermore, the textural properties of the RC were developed by air-steam treatment, and the highest specific surface area and pore volume of the oxidized RC were increased by 27.25 times and 6 times than the raw RC, respectively. RC-A2S2 obtained by air-steam alternating treatment had a high CO2 storage capacity of 2.00 mmol/g at 25 °C. The above research results have important reference value for strengthening of CGFS flotation and utilization of RC.

Suggested Citation

  • Ren, Liang & Gong, Yan & Wang, Xingjun & Guo, Qinghua & Yu, Guangsuo, 2023. "Study on recovery of residual carbon from coal gasification fine slag and the influence of oxidation on its characteristics," Energy, Elsevier, vol. 279(C).
    • Handle: RePEc:eee:energy:v:279:y:2023:i:c:s0360544223014937
    DOI: 10.1016/j.energy.2023.128099
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S0360544223014937
    Download Restriction: Full text for ScienceDirect subscribers only
    File URL: https://libkey.io/10.1016/j.energy.2023.128099?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. Li, Jiawei & Fan, Subo & Zhang, Xuyang & Chen, Zhichao & Qiao, Yanyu & Yuan, Zhenhua & Li, Zhengqi, 2022. "Investigation on co-combustion of coal gasification fine ash and raw coal blends: Thermal conversion, gas pollutant emission and kinetic analyses," Energy, Elsevier, vol. 246(C).
    2. Yang, Xiaolin & Zhang, Kefei & Ni, Chao & Cao, Hua & Thé, Jesse & Xie, Guangyuan & Tan, Zhongchao & Yu, Hesheng, 2022. "Ash determination of coal flotation concentrate by analyzing froth image using a novel hybrid model based on deep learning algorithms and attention mechanism," Energy, Elsevier, vol. 260(C).
    3. Dong, Yichen & Mao, Songbo & Guo, Feiqiang & Shu, Rui & Bai, Jiaming & Qian, Lin & Bai, Yonghui, 2022. "Coal gasification fine slags: Investigation of the potential as both microwave adsorbers and catalysts in microwave-induced biomass pyrolysis applications," Energy, Elsevier, vol. 238(PB).
    4. Li, Guangyu & Xu, Shisen & Zhao, Xuebin & Sun, Ruijin & Wang, Chang’an & Liu, Kang & Mao, Qisen & Che, Defu, 2020. "Investigation of chemical composition and morphology of ash deposition in syngas cooler of an industrialized two-stage entrained-flow coal gasifier," Energy, Elsevier, vol. 194(C).
    5. Li, Jiawei & Fan, Subo & Zhang, Xuyang & Chen, Zhichao & Qiao, Yanyu & Yuan, Zhenhua & Zeng, Lingyan & Li, Zhengqi, 2022. "Physicochemical structure, combustion characteristics and SiO2 properties of entrained flow gasification ash," Energy, Elsevier, vol. 251(C).
    6. Gupta, Saurabh & De, Santanu, 2022. "An experimental investigation of high-ash coal gasification in a pilot-scale bubbling fluidized bed reactor," Energy, Elsevier, vol. 244(PB).
    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. Li, Fenghai & Yang, Ziqiang & Li, Yang & Han, Guopeng & Fan, Hongli & Liu, Xuefei & Xu, Meiling & Guo, Mingxi & Fang, Yitian, 2023. "The effects of Na2O/K2O flux on ash fusion characteristics for high silicon-aluminum coal in entrained-flow bed gasification," Energy, Elsevier, vol. 282(C).
    2. Li, Fenghai & Zhao, Chaoyue & Guo, Qianqian & Li, Yang & Fan, Hongli & Guo, Mingxi & Wu, Lishun & Huang, Jiejie & Fang, Yitian, 2020. "Exploration in ash-deposition (AD) behavior modification of low-rank coal by manure addition," Energy, Elsevier, vol. 208(C).
    3. Li, Fenghai & Zhao, Wei & Li, Junguo & Fan, Hongli & Xu, Meiling & Han, Guopeng & Guo, Mingxi & Wang, Zhiqing & Huang, Jiejie & Fang, Yitian, 2023. "Investigation on influencing mechanisms of phosphogypsum (PG) on the ash fusion behaviors of coal," Energy, Elsevier, vol. 268(C).
    4. Liu, Yang & Fu, Peifang & Yu, Bo & Yan, Weijie & Chen, Yumin & Zhou, Huaichun, 2023. "Intrinsic combustion kinetics of rapid-pyrolysis Zhundong coal char," Energy, Elsevier, vol. 262(PB).
    5. Li, Jiangtao & Zhou, Xiaofeng & Gayubov, Abdumalik & Shamil, Sultanov, 2023. "Study on production performance characteristics of horizontal wells in low permeability and tight oil reservoirs," Energy, Elsevier, vol. 284(C).
    6. Guo, Feiqiang & Qiao, Qixia & Mao, Songbo & Bai, Jiaming & Dong, Kaiming & Shu, Rui & Xu, Liya & Wei, Haixiao & Qian, Lin & Wang, Yunpu, 2023. "A comprehensive study on the pyrolysis behavior of pine sawdust catalyzed by different metal ions under conventional and microwave heating conditions," Energy, Elsevier, vol. 272(C).
    7. Xuan, Weiwei & Zhang, Yongquan & Zhang, Jiansheng, 2022. "Chemistry variation of slag and the layered characteristics of deposits in an industrialized entrained-flow gasifier system with radiant syngas cooler," Energy, Elsevier, vol. 260(C).
    8. Li, Zhengkuan & Tian, Songfeng & Zhang, Du & Chang, Chengzhi & Zhang, Qian & Zhang, Peijie, 2022. "Optimization study on improving energy efficiency of power cycle system of staged coal gasification coupled with supercritical carbon dioxide," Energy, Elsevier, vol. 239(PC).
    9. Lei, Yang & Chen, Yuming & Chen, Jinghai & Liu, Xinyan & Wu, Xiaoqin & Chen, Yuqiu, 2023. "A novel modeling strategy for the prediction on the concentration of H2 and CH4 in raw coke oven gas," Energy, Elsevier, vol. 273(C).
    10. Wang, Wenyu & Li, Wei & Liang, Chen & Zhou, Li & Ren, Qiangqiang, 2023. "Decarburization and ash characteristics during melting combustion of fine ash from entrained-flow gasifier," Energy, Elsevier, vol. 263(PA).
    11. Igor Donskoy, 2023. "Particle Agglomeration of Biomass and Plastic Waste during Their Thermochemical Fixed-Bed Conversion," Energies, MDPI, vol. 16(12), pages 1-25, June.
    12. Li, Meng & Wu, Hao & Xu, Jianliang & Yu, Guangsuo & Chen, Xueli, 2023. "Exploring influence of MgO/SiO2 on viscosity-temperature property of coal ash slags under entrained flow gasification condition," Energy, Elsevier, vol. 284(C).
    13. Nie, Chun-chen & Jiang, Si-qi & Shi, Shun-xiang & Lyu, Xian-jun & Zhao, Yong-qiang & Zhu, Xiang-nan, 2023. "Energy recovery from concentrate in waste gasification fine slag by clean flotation assisted by waste oil collector," Energy, Elsevier, vol. 273(C).
    14. Du, Wang & Ma, Liping & Pan, Qinghuan & Dai, Quxiu & Zhang, Mi & Yin, Xia & Xiong, Xiong & Zhang, Wei, 2023. "Full-loop CFD simulation of lignite Chemical Looping Gasification with phosphogypsum as oxygen carrier using a circulating fluidized bed," Energy, Elsevier, vol. 262(PA).
    15. Hariana, & Putra, Hanafi Prida & Prabowo, & Hilmawan, Edi & Darmawan, Arif & Mochida, Keiichi & Aziz, Muhammad, 2023. "Theoretical and experimental investigation of ash-related problems during coal co-firing with different types of biomass in a pulverized coal-fired boiler," Energy, Elsevier, vol. 269(C).
    16. Anand, Amrit & Kachhap, Anju & Gautam, Shalini, 2023. "Synergistic effect of coal and biomass gasification and organo-inorganic elemental impact on gasification performance and product gas," Energy, Elsevier, vol. 282(C).
    17. 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).

    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:279:y:2023:i:c:s0360544223014937. 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.