A biomass pyrolysis process in which biomass feedstock particles (having a d5o mean particle size of at least 1 mm) are thermally treated substantially in the absence of oxygen to pyrolyse the biomass feedstock particles. The thermal treatment of the biomass feedstock particles includes a heat treatment drying step at a temperature in the range 100 DEG C to 250 DEG C. Then, at a pre-pyrolysis heating location in a heat treatment system, the biomass feedstock particles are heated to a temperature in the range 280 DEG C to 350 DEG C, held within the same temperature range for a time of at least 5 seconds and then moved from the pre-pyrolysis heating location to a pyrolysis heating location by a conveyor system for heating to a temperature above 350 DEG C for pyrolysis.
|Patent number||GB 0908082.1|
|Publication status||Published - 11 May 2009|
Hornung, A., & Apfelbacher, A. (2009). IPC No. C10B1/10. Staged biomass pyrolysis process and apparatus. (Patent No. GB 0908082.1). http://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20120321&DB=EPODOC&locale=en_EP&CC=EP&NR=2430121A1&KC=A1&ND=4