Bio-Oil Production from Biomass by Flash Pyrolysis in a Three-Stage Fluidized Bed Reactors System

• 作者: A. Berg E. Moreno I. Wilkomirsky
• 来源期刊: 材料科学与化学工程(英文)
• 学科: 医学
• 关键词: Fast PYROLYSIS Fluidized BED Reactors BIO-OIL from SAW DUST
• 年，卷（期）: 2014,（2）
• 页码范围: 6-10
• 页数: 5页
• 分类号: R73

摘要

A novel system of fast pyrolysis and vapour quenching was developed at pilot scale to obtain bio-oil from biomass. The system uses three-stage of interconnected fluidized bed reactors that continuously circulate silica sand from an internal pyrolysis reactor to a second external annular reactor for char burning, which generates most of the heat required by the pyrolysis reactor, and a third sand-preheating reactor that burns non-condensable pyrolysis gas. The hot vapours, after high temperature cleaning, are quenched in a flash cooling system. The process generates up to 62% of bio-oil, 25% of char and 13% of non-condensable gas. The heat requirements for the total system are provided by burning part of the char and non-condensable gases generated in the pyrolysis step and by preheating the fluidizing gas for the pyrolysis reactor.