PL EN
Characteristics of Char from Low-Rank Coal Gasification
,
 
,
 
 
 
More details
Hide details
1
Mining Engineering Department, Faculty of Engineering, Universitas Sriwijaya, Jl. Raya Palembang - Prabumulih Km. 32 Indralaya, South Sumatera 30662, Indonesia
2
Chemical Engineering Department, Faculty of Engineering, Universitas Sriwijaya, Jl. Raya Palembang-Prabumulih KM 32 Indralaya, Ogan Ilir, Sumatera Selatan 30662, Indonesia
3
Industrial Engineering Department of Faculty of Engineering, Universitas Tridinanti Palembang, Jl. Kapten Marzuki No.2446 Ilir Darat 3, Palembang, South Sumatera 30129 Indonesia
CORRESPONDING AUTHOR
Susila Arita   

Chemical Engineering Department, Faculty of Engineering, Universitas Sriwijaya, Jl. Raya Palembang-Prabumulih KM 32 Indralaya, Ogan Ilir, Sumatera Selatan 30662, Indonesia
 
 
KEYWORDS
TOPICS
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.