Citation

Wang Y, Cheng YS, Yu MG, Li Y, Cao JL, Zheng LG, Yi HW. J. Hazard. Mater. 2017; 335: 84-91.

Affiliation

State Key Laboratory Cultivation Bases Gas Geology and Gas Control (Henan Polytechnic University), Jiaozuo, Henan 454000, PR China; The Collaboration Innovation Center of Coal Safety Production of Henan Province, Jiaozuo, Henan 454000, PR China.

Copyright

(Copyright © 2017, Elsevier Publishing)

DOI

10.1016/j.jhazmat.2017.04.031

PMID

28432973

Abstract

The NaHCO3/red-mud (RM) composite powders were successfully prepared by the solvent-anti-solvent method for methane explosion suppression. The RM was used as a carrier, and the NaHCO3 was used as a loaded inhibitor. The NaHCO3/RM composite powders showed a special core-shell structure and excellent endothermic performance. The suppression properties of NaHCO3/RM composite for 9.5% CH4 explosion were tested in a 20L spherical explosion vessel and a 5L Perspex duct. The results showed that the NaHCO3/RM composite powders displayed a much better suppression property than the pure RM or NaHCO3 powders. The loading amount of NaHCO3 has an intensive influence on the inhibition property of NaHCO3/RM composite powders. The best loaded content of NaHCO3 is 35%. It exhibited significant inhibitory effect that the explosion max-pressure declined 44.9%, the max-pressure rise rate declined 96.3% and the pressure peak time delayed 366.7%, respectively.

Copyright © 2017 Elsevier B.V. All rights reserved.

Language: en

Keywords

Core-shell structure; Explosion suppression; Methane; NaHCO(3)/red-mud composite