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超临界水流化床反应器是应用于生物质气化制氢工程中的一种新型反应器,它避免了以往管式反应器容易出现结渣、堵管的不足,而且还具有床内升温迅速、生物质气化充分以及产氢率高等优点。由于采用超临界水作为流化工质,传统流化床的设计方法已经不能满足设计要求。本文基于欧拉双流体模型对超临界水流化床加料方式进行了数值模拟研究,建立了最优加料口结构评价方法,分析了加料口结构、加料速度比以及初始床层高度对超临界水流化床颗粒分布的影响。本文研究进一步完善了超临界水流化床的设计理论。
Supercritical water fluidized bed reactor is a new type of reactor used in biomass gasification and hydrogen production project. It avoids the problems of slagging and plugging in the past tubular reactors, and also has the advantages of bed temperature increase Rapid, fully biomass gasification and high hydrogen production advantages. Due to the use of supercritical water as the fluidized medium, the design method of the traditional fluidized bed can no longer meet the design requirements. In this paper, based on the Euler bi-fluid model, the numerical simulation of the feeding mode of supercritical water fluidized bed was carried out, and the optimal feeding port structure evaluation method was established. The structure of feeding port, feeding speed ratio and initial bed height were analyzed. Effect of Fluidized Bed Particle Size Distribution. This paper studies to further improve the design theory of supercritical water fluidized bed.