Thermogravimetric Study of Effect of Mineral Content and Maceral Composition on Illinois Coal Gasification

• Main Author: Zhang, Quan
• Format: Others
• Published: OpenSIUC 2013
• Online Access: https://opensiuc.lib.siu.edu/theses/1178; https://opensiuc.lib.siu.edu/cgi/viewcontent.cgi?article=2189&context=theses

The effects of mineral and maceral composition on Illinois coal gasification were studied by thermogravimetric analysis and semi-batch reactor. Macerals were separated from coal samples. Samples were manipulated to vary their mineral contents and characterized. TGA gasification experiments were conducted at 1000˚C and atmospheric pressure. The kinetics studied of gasification shows that the gasification involves two different mechanisms: the near zero order kinetics followed by Avrami-Erofe'ev mechanism. Correlation of rate constant and maceral and mineral content was analyzed. Semi-batch reactor gasification studies were performed at 800˚C. The gasification products were analyzed at different steam concentration. Correlation of product yield, steam concentration and mineral content was studied.