Characteristics of Char from Low-Rank Coal Gasification

Asof, Marwan and Arita, Susila and Andalia, Winny (2023) Characteristics of Char from Low-Rank Coal Gasification. Journal of Ecological Engineering, 24 (4). pp. 78-84. ISSN 2299-8993

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Abstract

The coal gasification process in this study aims to increase the quality of low-rank coal (LRC) from lignite type to coal with semi-anthracite and anthracite grades with higher fixed carbon values. The gasification process is carried out at temperatures between 700-900oC. In the initial stages of the study, the relationship between the increase in gasification temperature with the mass of coal and the gasification process time. The proximate and ultimate analysis is carried out to determine the characteristics of the raw materials used and the coal char produced from combustion. The analysis results are used to calculate the fuel ratio, where the fuel ratio is a parameter to determine the grade of coal. In addition, an SEM-spot EDS analysis was carried out on the gasified coal solids to ensure the fixed carbon content produced from the above process. The results showed that the gasification process could raise the grade of LRC into char products with semi-anthracite to anthracite, where the fuel ratio reached 10.84. From the product analysis results, the LRC coal gasification results using SEM-EDS showed that carbon reached 98.58%. The remaining inorganic elements in the product are less than 1.5%, such as Al, Si and K.

Item Type:	Article
Subjects:	T Technology > TN Mining engineering. Metallurgy > TN275-325 Practical mining operations. Safety measures
Divisions:	03-Faculty of Engineering > 31201-Mining Engineering (S1)
Depositing User:	Mr Marwan Asof
Date Deposited:	17 Mar 2023 04:52
Last Modified:	17 Mar 2023 04:52
URI:	http://repository.unsri.ac.id/id/eprint/90829

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