The production of hydrogen-rich gas by catalytic pyrolysis of biomass using waste heat from blast-furnace slag

(a) Experimental equipment, (b) granulated slag, (c) rotary-cup granulator, (d) granulation process.The dry granulation process for molten slag produces a slag product with large amounts of sensible heat, and allows heat recovery from the slag. In this paper, a hydrogen-rich gas production system not only recovering the heat in the form combustible gas, but also producing a commercially useful glassy slag product was presented.The system integrated the functions of heat recovery from BF slag and biomass catalytic pyrolysis. It was mainly composed of a granulation reactor (for the granulation of liquid slag and the catalytic reforming of biomass gas containing tar) and a rotary pyrolysis reactor (for the flash pyrolysis of biomass using granulated slag as heat carrier).240