A mobile fast pyrolysis system using a novel double pipe fluidized bed reactor with a capacity of 50 kg/h was designed and built. The structures of the main components, including the novel double pipe fluidized bed reactor, double bin pneumatic conveying feeder, jet/spray combined condenser, etc., are described in detail and experiments examining their performance are reported. Fast pyrolysis of larch sawdust was conducted at 400–550 °C to examine how temperature affects product yields and characteristics. The highest bio-oil yield was 68.6 wt% at 500 °C, and the yields of biochar and non-condensable gas were 19.2 wt% and 12.2% wt%, respectively. The chemical components of bio-oil included acids, aldehydes, ketones, phenols, furans, sugars, and other substances, and their proportions varied with temperature. Phenolic compounds were the most abundant components in the bio-oil with a peak content of 30.6% at 500 °C. The non-condensable gas was made mostly of CO₂ and CO, which together peaked at 88.3 vol% at 400 °C. Furthermore, the energy performance of the pyrolysis process was analyzed. This research provides a reference for the industrial transformation of mobile fast pyrolysis technology.

设计并建造了采用新型双管流化床反应器、容量为50 kg/h的移动式快速热解系统。详细介绍了新型双管流化床反应器、双仓气力输送给料器、射/喷组合冷凝器等主要部件的结构，并进行了性能试验。落叶松木屑的快速热解在 400–550 °C 下进行，以检查温度如何影响产品产量和特性。500°C 时生物油的最高产率为 68.6 wt%，生物炭和不凝气的产率分别为 19.2 wt% 和 12.2% wt%。生物油的化学成分包括酸类、醛类、酮类、酚类、呋喃类、糖类等物质，其比例随温度而变化。酚类化合物是生物油中含量最丰富的成分，在 500 °C 时的峰值含量为 30.6%。不可凝气体主要由一氧化碳组成₂和 CO，它们在 400 °C 时一起达到 88.3 vol% 的峰值。此外，分析了热解过程的能量性能。该研究为移动式快速热解技术的产业化转型提供了参考。