Abstract 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 demonstrate that an auger-paddle configuration is capable of achieving the high heating rates required for fast pyrolysis.

中文翻译：

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混合桨式反应器快速热解原料转化的评价

摘要 我们开发了一种基于带有传热材料 (HTM) 的独特螺旋桨结构的热解反应器，并证明可以实现高加热速率和快速热解。我们测试了 10 种不同的生物质类型，获得的生物油产量范围从热处理木材的约 40%、作物残留物（玉米秸秆）的约 57% 和木本原料（郁金香杨）的产量不等。这些结果以及固体焦炭产率与使用循环流化床对相同原料获得的结果相似。在没有 HTM 的情况下进行的测试导致较低的生物油产量（产量下降 8% 到 18%）和更高的炭产量，但具有类似的变化幅度，这表明热解缓慢。此外，对新型螺旋桨系统的物料停留时间和混合特性进行了综合研究和分析。这些结果表明螺旋桨结构能够实现快速热解所需的高加热速率。