Abstract The indirect steam gasification in circulating fluidized bed reactors was studied by modelling. The object of study was a coupled 12 MW th gasifier-combustor system, which was fired by woody biomass. The heat for the steam-blown gasifier was produced in the air-blown combustor and transported by circulating solids between the interconnected reactors. The system was modelled by a semi-empirical three-dimensional model, which simulated the fluid dynamics, reactions, and heat transfer in the coupled process. The studied cases included different temperature levels, which were controlled by the amount of additional fuel feed to the combustor. The model concept can be later applied to study sorption enhanced gasification, which is a promising method for sustainable production of transport fuels to substitute fossil based fuels.

中文翻译：

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循环流化床反应器间接蒸汽气化模拟

摘要 通过建模研究了循环流化床反应器中蒸汽的间接气化。研究对象是耦合的 12 MW th 气化炉-燃烧器系统，该系统由木质生物质燃烧。蒸汽吹气化器的热量在吹气燃烧器中产生，并通过互连反应器之间的循环固体传输。该系统采用半经验三维模型建模，模拟耦合过程中的流体动力学、反应和传热。研究的案例包括不同的温度水平，这些温度水平由燃烧器的额外燃料进料量控制。该模型概念以后可用于研究吸附增强气化，这是一种可持续生产运输燃料以替代化石燃料的有前途的方法。