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Experimental study on the new environmental protection chemical composite inhibitor for the inhibition of coal spontaneous combustion

  • Rongkun PanEmail author
  • Junwei Ma
  • Dong Fu
  • Cong Li
  • Hailin Jia
  • Ligang Zheng
Article
  • 31 Downloads

Abstract

This tissue developed the new environmental protection chemical composite inhibitor (CCI) for the effective inhibition of coal spontaneous combustion. CCI is combined by using sodium dodecyl sulfate, sodium laurylsulfonate, flame-retardant compound, xanthan gum and deionized water, and all the materials blend solutions with 1%, 5%, 10% and 20% concentrations. Coal samples treated with blended solutions with 1%, 5%, 10% and 20% concentrations are tested separately on the temperature-programmed oxidation test platform for loading coal samples in order to research the effectiveness and properties of solutions inhibiting oxidized spontaneous combustion of coal, which investigates and analyzes impacts on the parameters of coal spontaneous combustion, and then comparing to those of the untreated and water-treated coal samples. Experimental results showed that the developed inhibitor had remarkable inhibition effects on the CO generation and oxygen consumption rate for the treated coal samples. The individual and averaged inhibitor rates both increase with the increase in inhibitor solution concentration, and for 20% inhibitor-treated samples, these rates reached 85.92% and 67.26%, respectively. The statistical regression analysis showed that the inhibitor concentration and the averaged inhibition rate exhibited a strong logarithmic function relationship. In addition, the spontaneous combustion inhibition mechanism was discussed from both the macro- and micro-perspectives.

Keywords

Coal spontaneous combustion Composite inhibitor Oxygen consumption rate Inhibition rate Inhibition mechanism 

Notes

Acknowledgements

This work was carried out with funding from the National Key R&D Program of China (2018YFC0808100), National Natural Science Foundation of China (Grant Nos. 51304070, 51674103) and supported by the Science Research Funds for the Universities of Henan Province. The authors wish to thank these organizations for their support. They also wish to thank the readers and editors for their constructive comments and suggestions to improve the manuscript.

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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2019

Authors and Affiliations

  • Rongkun Pan
    • 1
    • 2
    • 3
    Email author
  • Junwei Ma
    • 1
  • Dong Fu
    • 1
  • Cong Li
    • 1
  • Hailin Jia
    • 1
    • 2
    • 3
  • Ligang Zheng
    • 1
    • 2
    • 3
  1. 1.Department of Safety and Science EngineeringHenan Polytechnic UniversityJiaozuoChina
  2. 2.The Collaborative Innovation Center of Coal Safety Production of Henan ProvinceHenan Polytechnic UniversityJiaozuoChina
  3. 3.Henan Key Laboratory of Prevention and Cure of Mine Methane and FiresJiaozuoChina

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