Abstract This study evaluated the effect of thermophysical properties of heat carriers on the performance of a laboratory-scale auger reactor. Heat carriers tested included stainless steel shot, fine sand, coarse sand and silicon carbide. The results showed similar organic yield and composition of bio-oil among the heat carriers when pyrolyzing red oak. Significant differences in yields of reaction water, char and non-condensable gases were observed. It was also found that residual carbon contributed to as high as 20 wt% of total char yield and attrition of heat carrier as high as 7% on a mass basis were present after as little as 2 h of operation. Tradeoffs between physical performance, material cost, and product yields may exist when selecting heat carrier materials for pyrolysis of biomass in an auger reactor.

中文翻译：

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热载体的热物理性质对实验室规模螺旋热解器性能的影响

摘要 本研究评估了热载体的热物理特性对实验室规模螺旋反应器性能的影响。测试的热载体包括不锈钢丸、细砂、粗砂和碳化硅。结果表明，热解红橡木时，热载体中生物油的有机产率和组成相似。观察到反应水、炭和不可冷凝气体的产率存在显着差异。还发现残留碳占总焦炭产率的 20%（重量），热载体的损耗高达 7%（按质量计），仅在运行 2 小时后就存在。在选择用于螺旋反应器中生物质热解的热载体材料时，可能存在物理性能、材料成本和产品产量之间的权衡。