Performance of entrained flow and fluidised bed biomass gasifiers on different scales

This biomass gasification process study compares the energetic and economic efficiencies of a dual fluidisedbed and an oxygen-blown entrained flow gasifier from 10MWth to 500MWth. While fluidised bedgasification became the most applied technology for biomass in small and medium scale facilities,entrained flow gasification technology is still used exclusively for industrial scale coal gasification. Therefore,it is analysed whether and for which capacity the entrained flow technology is an energetically andeconomically efficient option for the thermo-chemical conversion of biomass. Special attention is given tothe pre-conditioning methods for biomass to enable the application in an entrained flow gasifier. Processchains are selected for the two gasifier types and subsequently transformed to simulation models.The simulation results show that the performance of both gasifier types is similar for the production ofa pressurised product gas (2.5 MPa). The cold gas efficiency of the fluidised bed is 76?79     «

This biomass gasification process study compares the energetic and economic efficiencies of a dual fluidisedbed and an oxygen-blown entrained flow gasifier from 10MWth to 500MWth. While fluidised bedgasification became the most applied technology for biomass in small and medium scale facilities,entrained flow gasification technology is still used exclusively for industrial scale coal gasification. Therefore,it is analysed whether and for which capacity the entrained flow technology is an energet...     »