A biomass pyrolysis process is provided in which biomass feedstock is mixed with a heat carrier. The heat carrier at least partly comprises char. The ratio by weight of biomass to char is in the range 1:1 to 1:20. The process may be carried out by in a screw/auger pyrolysis reactor in which the solid feedstock components are conveyed along the reactor by a first screw. A second screw conveys at least a portion of the solid products of the biomass pyrolysis back to a heat transfer medium input port. Thus, the heat transfer medium includes char from the biomass pyrolysis.
|Patent number||GB 2460156|
|Publication status||Published - 25 Nov 2009|
Hornung, A., & Apfelbacher, A. (2009). IPC No. C10B0049/16. Thermal treatment of biomass. (Patent No. GB 2460156). http://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20110330&DB=EPODOC&locale=en_EP&CC=EP&NR=2300560A2&KC=A2&ND=4