GASIFICATION STUDY OF SARAWAK COALS

• Main Authors: Nor Fadzilah Othman, Mohd Hariffin Bosrooh
• Format: Article
• Language: English
• Published: Universitas Gadjah Mada 2017-11-01
• Series: ASEAN Journal on Science and Technology for Development
• Subjects: gasification; Sarawak coals; thermogravimetric; reactivity; Arrhenius equation
• Online Access: http://www.ajstd.org/index.php/ajstd/article/view/232
• ISSN: 0217-5460; 2224-9028

Thermogravimetry (TG) has been applied in a preliminary investigation, to the gasification of two low rank Sarawak coals. The coal samples, about 10 mg were investigated within the temperature range 30–900°C at different heating rate of 10, 20 and 30°C min-1, under a synthetic air atmosphere for the gasification study. The kinetic parameters were determined using Arrhenius type reaction model assuming a first-order reaction. The reactivity, RT values are fitted with Arrhenius equation at r2 = 0.83 - 0.98 for MP coal, while the RT values for MB coal are fitted with the Arrhenius equation at r2 = 0.99. The activation energy, EA for MP coal are in the range of 3.7 -4.7 kJ mol-1 and for MB coal are 7.6 - 25.6 kJ mol-1 at 3 different heating rates.