Comparison of catalytic pyrolysis and gasification of Indonesian low rank coals using lab-scale bubble fluidized-bed reactor

• Published in: The Korean journal of chemical engineering Vol. 34; no. 4; pp. 1238 - 1249
• Main Authors: Kang, Tae-Jin, Park, HyeJung, Namkung, Hueon, Xu, Li-Hua, Fan, Shumin, Kim, Hyung-Taek
• Format: Journal Article
• Language: English
• Published: New York Springer US 01-04-2017; Springer Nature B.V; 한국화학공학회
• Subjects: Beds (process engineering); Biotechnology; Catalysis; Catalysts; Catalytic converters; Chemistry; Chemistry and Materials Science; Coal gasification; Fluidized beds; Industrial Chemistry/Chemical Engineering; Lignite; Materials Science; Pyrolysis; Synthesis gas; The 11th Korea-China Clean Energy Workshop; 화학공학; Low Rank Coal; Fluidized-bed Reactor; K; CO; Catalytic Gasification; Catalytic Pyrolysis
• ISSN: 0256-1115; 1975-7220
• DOI: 10.1007/s11814-016-0366-1

Various methods are used in the coal gasification technology for increasing the efficiency of low rank coal to the level of high rank coal through catalytic gasification. The catalyst used in the catalytic gasification process lowers the activation energy required in the coal gasification reaction. Our purpose was to determine the characteristics of the reaction conditions for producing syngas and the characteristics for comparison catalytic pyrolysis and gasification performance. Among various coals, we used Indonesian low rank coals (Indonesian lignite, MSJ, and Roto South) characterized by a large deposit volume and low cost. Catalytic pyrolysis and gasification experiments were run under the same experimental conditions (reactor type, reaction temperature, catalyst content, and catalyst input method), and the characteristics were compared. Taking the conversion and heating values into consideration, the optimal conditions for catalytic gasification in this study were an H
2
O/C mole ratio of 10, temperature of 800 °C, and 10 wt% catalyst impregnation.