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ABSTRACT
Steam gasification process in the presence of CaO is an efficient method to convert carbon-based fuels, producing a gas with low concentration of CO2 and high hydrogen yield. In the present work, an unsteady-state, kinetic model of crude oil gasification was developed for prediction of gas composition and performance parameters. The effects of key operating parameters including [H2O]/[C] and [CaO]/[C] on hydrogen yield and CO2 capture ratio (CCR) were studied. The results showed that the CCR increased with increasing [CaO]/[C] from 0.1 to 0.7 (mg/mg) and then decreased, probably due to the reversal of exothermic carbonation reaction by Le Chatelier's principle. In spite of [CaO]/[C], CCR improved continuously with increasing [H2O]/[C] probably due to a significant improvement in the endothermic nature of the process by increasing [H2O]/[C].