- Title
- Examine the minimum ignition energy required to ignite the coal dust cloud in ventilation air methane
- Creator
- Ajrash, Mohammed Jabbar; Zanganeh, Jafar; Moghtaderi, Behdad
- Relation
- 11th Asia-Pacific Conference on Combustion (ASPACC 2017). Proceedings of the 11th Asia-Pacific Conference on Combustion (Sydney 10-14 December, 2017)
- Publisher
- UNSW
- Resource Type
- conference paper
- Date
- 2017
- Description
- This work aims to examine the minimum ignition energy (MIE) required to ignite a coal dust cloud in a ventilation air methane capture duct. For this purpose, a Hartmann apparatus was employed to find the MIE of a coal dust collected from a NSW, Australian mine. This study also predicts the deposition of coal dust inside a Ventilation Air Methane (VAM) capture duct by assuming the particles are spherical and VAM flow rate is 150 m³·s-1. The deposition prediction indicates that coal dust particles (50-212 µm) could be deposited in the VAM capture duct within 55 m to 217 m depending on the particles size, particle velocity. MIE tests for three size ranges of coal dust particles were undertaken. Results showed that the MIE of coal dust particles in the 0-74 µm size range, ignited in a range of 100-300 mJ. However, for the coal dust particles in the size range from 74-125 µm and 125-212 µm the MIE measured was in the range of 300-1000 mJ. The ignition coal dust concentration was varied between 150 g.m-3 to 1500 g.m-3 for the tests.
- Subject
- ignition energy; coal dust cloud; ventilation air methane; Hartmann apparatus
- Identifier
- http://hdl.handle.net/1959.13/1386363
- Identifier
- uon:32403
- Language
- eng
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