Experimental and Numerical Investigations of Underground Coal Gasification (UCG) Using Half-teardrop Shape Cavity

Whacharapat Wattanasrirote, Whacharapat Wattanasrirote and Mohideen Batcha, Mohd Faizal and Arkom Palamanit, Arkom Palamanit and Maizirwan Mel, Maizirwan Mel and Makatar Wae-hayee, Makatar Wae-hayee (2023) Experimental and Numerical Investigations of Underground Coal Gasification (UCG) Using Half-teardrop Shape Cavity. Journal of Advanced Research in Fluid Mechanics and Thermal Sciences, 101 (2). pp. 172-183. ISSN 2289-7879

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Abstract

In this work, the process of Underground Coal Gasification (UCG) was studied experimentally and numerically. The typical cavity of UCG was a half-teardrop shape. The coal samples were collected from Mae Moh coal mine, Thailand. The coal type is mainly lignite. To generate the gasification process, the coal sample was heated in the half-teardrop cavity by injecting partial oxidant, which is air, according to the Equivalent Ratio (ER) of 0.1, 0.2, 0.3, 0.5, and 0.7. The properties of the product gas were measured using a syngas analyser. CFD technique, ANSYS (Fluent), was used to simulate flow characteristics and gasification process in the cavity. The experimental results show that the low heating value (LHV) of syngas peaks at 0.92 MJ/m3 when ER = 0.1, and LHV decreases monotonically as ER increases. The CFD results show that the area of high temperature in the UCG cavity is larger when the ER was greater.

Item Type:	Article
Uncontrolled Keywords:	Underground coal gasification (UCG); coal; syngas; gas compositions
Subjects:	T Technology > T Technology (General)
Divisions:	Faculty of Mechanical and Manufacturing Engineering
Depositing User:	Mr. Mohamad Zulkhibri Rahmad
Date Deposited:	02 Aug 2023 03:48
Last Modified:	02 Aug 2023 03:48
URI:	http://eprints.uthm.edu.my/id/eprint/9546

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