Abstract: In this paper, the residence time distribution of jet - entrained gasifier is measured in a large scale cold model (1000 mm × 4000 mm) gasifier based on the twin - fluid concentric intersective jet nozzle. Post by - pass mixing model for the residence time distribution in gasifier is constructed based on the network synthesis technique and the explicit mathematic equation of that has been obtained. The relationship of the model parameter with dimensionless similarity number Ct and the momentum ratio of annular jet flow to concentric jet flow Gr is also given in the experiment conditions.

摘要： 以双通道交叉射流喷嘴为射流源,在直径1000mm、高4000mm的大型冷模装置上,测定了射流携带床气化炉内的停留时间分布;利用网络合成技术,构筑了停留时间分布的后短路T混合模型,得到了停留时间分布密度函数的显式数学表达式;给出了实验范围内模型参数与无量纲相似准数Ct和喷嘴环隙与中心射流动量比G_r之间的关系。