CFD modeling of flame jump across air gap between evasé and capture duct for ventilation air methane abatement

Title: CFD modeling of flame jump across air gap between evasé and capture duct for ventilation air methane abatement
Creator: Peng, Zhengbiao; Zanganeh, Jafar; Moghtaderi, Behdad
Relation: Processes Vol. 9, Issue 12
Publisher Link: http://dx.doi.org/10.3390/pr9122278
Publisher: MDPI AG
Resource Type: journal article
Date: 2021
Description: The ventilation air–methane (VAM) released from underground mines is often transported into regenerative thermal oxidizer (RTO) devices and burnt into heat energy. This study numerically investigates the scenarios where explosion occurs inside the RTO and the flame and pressure waves propagate back quickly towards the VAM discharge duct. Possibilities of secondary explosion in the discharge duct, hence in the downstream underground mines, are examined. The results critically showed that when the methane concentration accumulated in the RTO reached 7.5% or above, the flame generated from the explosion jumped to the evasé of the discharge section (over a distance of 29.4 m) and could induce explosions in underground mines.
Subject: ventilation air-methane; evasé; regenerative thermal oxidizer; flame jump; underground mines; secondary explosion
Identifier: http://hdl.handle.net/1959.13/1446221
Identifier: uon:42799
Identifier: ISSN:2227-9717
Language: eng
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