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Environmental Science and Pollution Research

, Volume 26, Issue 4, pp 3292–3307 | Cite as

Development of a novel wind-assisted centralized spraying dedusting device for dust suppression in a fully mechanized mining face

  • Huitian Peng
  • Wen NieEmail author
  • Peng Cai
  • Qiang Liu
  • Zhiqiang Liu
  • Shibo Yang
Research Article
  • 105 Downloads

Abstract

Aiming at addressing serious pollution in the No. 30106 fully mechanized coal mining face of Shiquan Coal Mine during coal cutting process, the spraying device between hydraulic supports was improved through the combination of experimental analysis, numerical simulation, and field measurement, and a novel wind-assisted centralized spraying dedusting device was developed. The newly developed device could make the formed spraying field more concentrated on the dust-producing source around the coal shearer’s drum, and thus significantly enhanced the spraying performance. According to numerical simulation results, the spraying performance reached the optimum at a hydraulic pressure of 8 MPa for the spraying device and an air pressure of 1 MPa for the pneumatic motor; under these optimal conditions, the droplet concentration in the spraying field around the coal cutter drum was as high as 24.85 g/m3, and the formed high-concentration spraying field could basically cover the whole section in the spraying field from coal wall to the support pillar. Field measured results revealed that, at a hydraulic pressure of 8 MPa and an air pressure of 1 MPa, the dust suppression rate around coal cutter driver reached up to 87.96%, suggesting that the developed wind-assisted centralized spraying dedusting device had remarkable dust suppression performance and could effectively improve the operating environment in the fully mechanized mining face.

Graphical Abstract

In this paper, we have designed a novel wind-assisted centralized spraying dedusting device and studied the optimal spray parameters. Firstly, the nozzles were selected according to the multi-factor experimental platform for measuring the spraying field’s atomization characteristics. Secondly, we had a numerical simulation of the fully mechanized mining face. And the third, we tested the effect of dust removal.

Keywords

Fully mechanized mining face Spraying dedusting device Wind-assisted Experimental analysis Numerical simulation Field measurement 

Notes

Funding information

This work has been funded by the National Natural Science Foundation of China (NO. 51874191 and 51404147), the Focus on Research and Development Plan in Shandong Province (NO.2017GSF20111), the National Key R&D Program of China (2017YFC0805201), the China Postdoctoral Science Foundation (NO.2015M570601 and 2017T100503).

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  1. 1.College of Mining and Safety EngineeringShandong University of Science and TechnologyQingdaoChina
  2. 2.State Key Laboratory of Mining Disaster Prevention and Control Co-found by Shandong Province and the Ministry of Science and TechnologyShandong University of Science and TechnologyQingdaoChina

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