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首页> 外文期刊>Fuel >Model development and validation: Co-combustion of residual char, gases and volatile fuels in the fast fluidized combustion chamber of a dual fluidized bed biomass gasifier
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Model development and validation: Co-combustion of residual char, gases and volatile fuels in the fast fluidized combustion chamber of a dual fluidized bed biomass gasifier

机译：模型开发和验证：双流化床生物质气化炉的快速流化燃烧室中的残留焦炭，气体和挥发性燃料的共燃烧

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摘要

A one-dimensional steady state model has been developed for the combustion reactor of a dual fluidized bed biomass steam gasification system. The combustion reactor is operated as fast fluidized bed (riser) with staged air introduction (bottom, primary and secondary air). The main fuel i.e., residual biomass char (from the gasifier), is introduced together with the circulating bed material at the bottom of the riser. The riser is divided into two zones: bottom zone (modelled according to modified two phase theory) and upper zone (modelled with core-annulus approach). The model consists of sub-model for bed hydrodynamic, conversion and conservation. Biomass char is assumed to be a homogeneous matrix of C, H and O and is modelled as partially volatile fuel. The exit gas composition and the temperature profile predicted by the model are in good agreement with the measured value.
机译：已经为双流化床生物质蒸汽气化系统的燃烧反应器开发了一维稳态模型。燃烧反应器作为快速流化床（立管）运行，分阶段引入空气（底部，一次和二次空气）。主要燃料，即残留的生物质炭（来自气化炉），与循环床材料一起引入立管底部。立管分为两个区域：底部区域（根据修正的两相理论进行建模）和上部区域（使用岩心环空方法进行建模）。该模型包括用于床层水动力，转化和保护的子模型。假设生物质炭为C，H和O的均质矩阵，并建模为部分挥发性燃料。该模型预测的出口气体组成和温度曲线与测量值高度吻合。

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