采用颗粒动理学理论对双流化床中生物质蒸汽气化进行研究。
Investigation on biomass steam gasification in a dual fluidized bed reactor with the granular kinetic theory.
机构信息
Institute of Combustion and Thermal Systems, School of Mechanical, Electronic and Control Engineering, Beijing Jiaotong University, Beijing 100044, China.
Institute of Combustion and Thermal Systems, School of Mechanical, Electronic and Control Engineering, Beijing Jiaotong University, Beijing 100044, China.
出版信息
Bioresour Technol. 2018 Dec;269:384-392. doi: 10.1016/j.biortech.2018.08.099. Epub 2018 Aug 31.
The dual fluidized bed (DFB) reactor is promising to convert biomass into high-quality syngas efficiently. In this work, a three-dimensional model is built based on the granular kinetic theory to predict the biomass steam gasification in dual fluidized bed reactors. The model is firstly validated against a series of experimental results. Then, the effects of some essential operation parameters including the biomass flow rate (F), the steam to fuel ratio (R) and the gasification temperature (T) on the biomass steam gasification properties in a DFB reactor are comprehensively analyzed with the orthogonal method. In the concerned ranges of the operation parameters, the cold gas efficiency is found to be the most sensitive to F and least sensitive to T. The optimal cold gas efficiency of the DFB gasifier is 82.9% when F, R and T are 15 kg/h, 1.5 and 900 °C, respectively, and the H mole fraction is 46.62%.
双流化床（DFB）反应器有望高效地将生物质转化为高质量的合成气。在这项工作中，基于颗粒动理学理论建立了一个三维模型，以预测双流化床反应器中的生物质蒸汽气化反应。该模型首先通过一系列实验结果进行了验证。然后，采用正交方法综合分析了一些重要的操作参数，包括生物质流量（F）、蒸汽与燃料比（R）和气化温度（T）对 DFB 反应器中生物质蒸汽气化特性的影响。在所关注的操作参数范围内，冷煤气效率对 F 最敏感，对 T 最不敏感。当 F、R 和 T 分别为 15kg/h、1.5 和 900°C 时，DFB 气化炉的最佳冷煤气效率为 82.9%，H 摩尔分数为 46.62%。
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