THE EFFECT OF COAL CHARACTERISTICS OF THE MEULABOH AND SOUTH SUMATRA BASINS ON GASIFICATION REACTIVITY WITH THERMOGRAVIMETRIC ANALYSIS (TGA)

• Main Author: Kiandra, M.Fachrel
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/76581
• Institution: Institut Teknologi Bandung

Coal gasification is one of the environmentally friendly alternatives for coal utilization. Coal gasification is defined as a conversion process of coal into gas. In this study, the gasification process utilizes CO2 and 75% Argon – 25% Air. The coal samples used are from Aceh Barat in Aceh province and Musi Rawas in South Sumatra Province. Both samples were analyzed using the thermogravimetric analysis (TGA) method to determine the correlation between coal characteristics and reactivity. The reactivity test of coal gasification was conducted in three stages. Firstly, both samples were heated using an Argon atmosphere from 50°C to 900°C at a heating rate of 10°C per minute. The second step involved maintaining the temperature at 900°C for 10 minutes to achieve isothermal conditions. The final stage involved changing the atmosphere to CO2 and 75% Argon – 25% air. Then, both samples were continuously heated at 900°C for 30 minutes. The results of this study revealed that coal sample BB-01 had higher ash content compared to coal sample BB-02. The rank of coal sample BB-02 was sub-bituminous A, while coal BB-01 was sub-bituminous C. Coal samples with high ash content and low rank resulted more reactive in gasification process. Furthermore, coal reactivity is also influenced by the composition of macerals, porosity, mineral content, and atmosphere.