Abstract
Thermodynamic equilibrium calculations were performed to determine the possible compositions and conditions for formation of potential liquid phases responsible for fluidised bed agglomeration during gasification of a high-sulphur low-rank coal from South Australia. The coals from this region of Australia are typically characterised by containing high levels of sodium, silica and sulphur. The transformation behaviour of the form of sodium present in coal, as either a carboxylate forming part of the coal organic matter or as soluble salt (NaCl) and its reaction with silicon compounds (silica or kaolin) is presented. The influence of temperature and gas atmosphere on equilibrium composition was evaluated. Thermodynamic equilibrium calculations show that the distribution of sodium among the produced species will depend on the form of sodium in the coal, the gas atmosphere and the forms in which silicon is present in the coal. Steam was found to have the most significant effect causing a lowering of the sodium carbonate melting point temperature.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.