STUDY ON THE INFLUENCE OF COAL CHARACTERISTICS FROM THE BARITO AND SOUTH SUMATRA BASINS ON GASIFICATION REACTIVITY USING THERMOGRAVIMETRIC ANALYSIS-MASS SPECTROMETRY (TGA-MS)

• Main Author: Adi Darma Saputra, Raka
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/84920
• Institution: Institut Teknologi Bandung

The abundant coal resources in Indonesia drive the development of further technologies like gasification for more environmentally friendly utilization. Gasification reactivity is a critical factor in designing and operating gasification reactors. Therefore, understanding the characteristics of Indonesian coal is necessary to comprehend its impact on gasification reactivity. This study uses two coal samples: BB-01 from Central Kalimantan Province and BB-02 from South Sumatra. The gasification reactivity analysis was performed using thermogravimetry, focusing on thermal characteristics during the pyrolysis and gasification processes. Thermogravimetric analysis involves heating the samples from 50°C to 900°C at a rate of 10°C/min using an Argon (Ar) atmosphere, conditioning the samples for 10 minutes at 900°C to achieve isothermal conditions, and changing the atmosphere to 25% air and 75% Argon (Ar). The coal characteristics were analyzed using proximate analysis, ultimate analysis, and calorific value analysis. Mass spectrometry analysis was conducted for m/z 2, 16, 18, 28, and 44. The results indicate that the BB-01 sample is classified as High- Volatile A Bituminous coal, while the BB-02 sample is classified as High-Volatile C Bituminous coal. During the gasification process, the BB-01 sample exhibited higher reactivity compared to the BB-02 sample, influenced by the higher ash content in the BB-01 sample. During the pyrolysis process, the products H2, CH4, H2O, CO, and CO2 are produced, while during the gasification process, the dominant products formed are H2O and CO2.