Experimental study on bio-oil production from pyrolysis of biomass micron fuel (BMF) in a free-fall reactor

► Bio-oil production from pyrolysis of biomass micron fuel in a free-fall reactor. ► Effects of pyrolysis conditions on product distribution were investigated. ► Pyrolysis temperature and particle size have a significant effect on bio-oil yield. ► The optimum parameters were determined via orthogonal test. ► The maximum bio-oil yield reached 41.05 wt.%.