Within this work, a novel 50 kW_th indirectly heated bubbling fluidized bed steam reformer (IHBFBSR) is presented, along with its commissioning experiments. In the IHBFBSR, heat is provided through two radiant tube natural gas burners in the bed and the freeboard area. The aim of this innovative design is sufficient heat provision for biomass steam reforming and cracking reactions and heat loss reduction, thus allowing the possibility of scaling-up to an industrial level. Experiments were performed with two woody biomass feedstocks and two bed material particle sizes under different operating conditions (steam to biomass ratio, lambda, temperature), in order to identify the setup's main characteristics. Product gas composition and quality, as well as the cold gas efficiency of the IHBFBSR were in reasonable agreement to similar systems, however carbon conversion prediction needs further improvement. H₂ production and tar removal are favoured by small bed material particle sizes as well as by char accumulation in the bed area. Furthermore, air injection above the bed led to improved H₂/CO ratios and lower tar yields compared to when air is used as a fluidization agent. Overall, it was shown that the IHBFBSR technology constitutes a promising development in the field of biomass allothermal gasification.

在这项工作中，一种新颖的 50 kW _th介绍了间接加热鼓泡流化床蒸汽重整器 (IHBFBSR) 及其调试实验。在 IHBFBSR 中，热量通过床层和干舷区域中的两个辐射管天然气燃烧器提供。这种创新设计的目的是为生物质蒸汽重整和裂解反应提供足够的热量并减少热损失，从而有可能扩大到工业水平。在不同的操作条件（蒸汽与生物质比、λ、温度）下使用两种木质生物质原料和两种床材料粒度进行实验，以确定设置的主要特征。IHBFBSR 的产品气成分和质量以及冷气效率与类似系统具有合理的一致性，然而，碳转化预测需要进一步改进。H₂生产和焦油去除有利于小床材料粒度以及床区中的炭积累。此外，与使用空气作为流化剂时相比，在床层上方注入空气导致改进的 H ₂ /CO 比和更低的焦油产率。总体而言，表明 IHBFBSR 技术在生物质异热气化领域具有广阔的发展前景。