Reaction Kinetics Between Steam and Oil Shale Char

摘要

The reaction kinetics between steam and the residual organic carbon (char) in retorted Colorado oil shale (Mahogany Zone) were investigated using both isothermal and nonisothermal methods. The reaction is found to depend on the 0.5 power of the steam partial pressure. The steam-char reaction is found to be faster than the CO sub 2 -char reaction at temperatures near 700 exp 0 C. The reactivity of the char depends on both the heating rate used to generate the char and subsequent thermal treatment. Removal of mineral matter by acid leaching decreases the reactivity of the car by more than an order of magnitude. (ERA citation 04:032441)