The entrained flow gasification technology has been widely used to produce syngas (CO+H₂) for chemical industries and power generation plant. However, the entrained flow gasification of biomass resources still faces some issues that need to be addressed. Our research work has focused on the reaction and relevant behaviours, such as pretreatment, gasification, and ash-to-slag behaviours for the entrained flow gasifier. A visual experimental platform has been built to conduct this series of explorations and research work, with the combination of micro infrared mapping technique. The particle evolution of the biomass particle during pretreatment and the chemical composition were captured and analysed. The gasification characteristics of biomass char particles was investigated for the selection of particle size as a reference for pretreatment and transportation. A reaction model with thermal analysis was proposed to analyse and reveal the characteristics of the char gasification. Additionally, we investigated the ash particle evolution, melting and slagging behaviour during the gasification process, with the effects of biomass types. Our recent work also found the element migration behaviour between particles and liquid surface, and compared the addition for the flow ability of the slag, which provides a further insight on the interfacial reaction and selection of refractor of the reactor. The mentioned above work will help to provide guidance for the comprehensive model, reactor design, and operation optimization of biomass entrained flow gasifier.
 

biomass,pretreatment,entrained flow gasifcation,reaction process,ash/slag