Sutability of australian bituminous coals for use in slagging gasifiers

摘要

Commercial development of coal based integrated gasification - combined cyle (IGCC) power generation technologies will expand world markets for coals for use in slagging gasifiers.However,the high ash fusion temperatures of Australian export thermal coals pose a concern in such technologies.In this work slag viscosity versus temperature curves have been used to evaluate slag tappability and hence the suitability of bituminous coals for such use.The amount of CaCO_3 required as a flux is used to rank the coals for use in slagging gasifiers.Several coals appear suitable without flux addition.For the other coals tested,flux requirements ranged between 2 and 11