卧式垂直气流分子筛吸附器内的流场分析

Analysis of flow distribution in a horizontal-type molecular sieve adsorber

建立了以多孔管为气流分布器的卧式垂直气流分子筛吸附器结构的数学模型,并采用FLUENT软件对其内部速度场分布进行了数值计算分析。计算结果显示,进出口的计算压降值与实际运行监测情况相接近,分子筛床层的气流分布较均匀,该结构弥补了传统卧式吸附器气流分配不均匀的缺点。与以缓冲板为气流分布器的结构进行比较后发现,多孔管结构还能较好地解决吸附器壁面上容易产生边流现象的问题。

A numerical simulation model was set up for a horizontal-type molecular sieve adsorber with perforated-pipe flow distributor.The internal flow distribution of the molecular sieve adsorber was analyzed.The results show that the inlet and outlet pressures are close to the actual operating parameters and the molecular sieve bed has well-distributed flow.The perforated-pipe structure overcome the shortage of uneven air distribution in traditional horizontal-type adsorbers and reduce the flow maldistribution near the wall,which is apt to occur in traditional buffer-board flow distributors.