Evaluation of fast pyrolysis feedstock conversion with a mixing paddle reactor [electronic resource]

• Ngôn ngữ: eng
• Ký hiệu phân loại: 666.9 Masonry adhesives
• Thông tin xuất bản: Washington, D.C. : Oak Ridge, Tenn. : United States. Dept. of Energy. Office of Energy Efficiency and Renewable Energy ; Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 2017
• Mô tả vật lý: Size: p. 124-132 : , digital, PDF file.
• Bộ sưu tập: Metadata
• ID: 264415
• Chủ đề: 1. 09 biomass fuels; 2. 22 general studies of nuclear reactors; 3. Auger reactor; 4. Bioenergy; 5. Feedstock screening

Tóm tắt

We have developed a pyrolysis reactor based on a unique auger-paddle configuration with heat transfer material (HTM) and proved to achieve high heating rates and fast pyrolysis. We tested ten different biomass types and obtained bio-oil yields ranging from approximately 40% for thermally treated wood, to approximately 57% for crop residues (corn stover) and 67% yield for woody feedstocks (tulip poplar). These results, as well as the solid char yields, are similar to those obtained for the same feedstock using a circulating fluidized bed. Tests conducted without HTM resulted in lower bio-oil yields (ranging from 8 to 18% decrease in yield) and higher char yields with similar changes in magnitude, which is indicative of slow pyrolysis. In addition, a comprehensive study and analysis of the material residence time and mixing characteristics of the novel auger-paddle system is presented. These results thus demonstrate that an auger-paddle configuration is capable of achieving the high heating rates required for fast pyrolysis.