Short overview on the jetting-fountain fluidized bed (JFFB) combustor

The experiments carried out using the JFFB furnish promising results. The power consumption in delivering gases into the combustor was found much lower. It confirms a rapid reliable method for initial heating of fluidized bed combustor. The JFFB enables gaseous fuels to burn smoothly like a normal premixed flame avoiding acoustic effects and explosions due to volume combustion in the bubble phase. Applying the JFFB dampens greatly the overheating in the freeboard, in particular, at lower bed temperatures. A useful feature of the jetting-fountain fluidized bed configuration is the option to apply staged-air technique in combustion processes. Staged-air combustion has been applied for gaseous and biomass fuels. The performance of the combustor has been found much better when compared with conventional operation.