@ARTICLE{Ściążko_Marek_A_2015, author={Ściążko, Marek and Stępień, Leszek}, number={No 1 March}, journal={Chemical and Process Engineering}, pages={73-87}, howpublished={online}, year={2015}, publisher={Polish Academy of Sciences Committee of Chemical and Process Engineering}, abstract={A modified approach to equilibrium modelling of coal gasification is presented, based on global thermodynamic analysis of both homogeneous and heterogeneous reactions occurring during a gasification process conducted in a circulating fluid bed reactor. The model is based on large-scale experiments (ca. 200 kg/h) with air used as a gasification agent and introduces empirical modifications governing the quasi-equilibrium state of two reactions: water-gas shift and Boudouard reaction. The model predicts the formation of the eight key gaseous species: CO, CO2, H2O, H2, H2S, N2, COS and CH4, volatile hydrocarbons represented by propane and benzene, tar represented by naphthalene, and char containing the five elements C, H, O, N, S and inorganic matter.}, type={Artykuły / Articles}, title={A Modified Gibbs Free Energy Minimisation Model for Fluid Bed Coal Gasification}, URL={http://www.journals.pan.pl/Content/85022/PDF/06-paper.pdf}, doi={10.1515/cpe-2015-0006}, keywords={equilibrium modelling, coal gasification, gasification modelling, fluid bed gasification}, }