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对冷模装置上气、液、固三相逆流进行了流体力学实验，得到了三种不同开孔率下穿流塔板的负荷性能图。在三相逆流情况下，均可找到适宜的操作范围，塔板压降和泡沫层高度与三相逆流流体力学性能有一定的关系。塔板压降主要取决于气相速度，泡沫层高度随气速和液、气流动参数及液相流量而变化。建立了塔板压降及泡沫层高度计算模型，回归结果表明，计算模型拟合性较好。由于固相的存在，应该加大蒸馏过程中所需的回流比。
The fluid mechanics experiments of gas, liquid and solid three-phase countercurrent flow on the cold mold were carried out, and the load performance charts of the three-phase perforated plates were obtained. In the case of three-phase countercurrent flow, the appropriate operating range can be found. The pressure drop of the plate and the height of the foam layer are related to the three-phase counterflow fluid mechanics performance. The pressure drop of the plate mainly depends on the gas velocity. The height of the foam layer varies with the gas velocity and the flow parameters of liquid and gas as well as the liquid flow rate. The calculation model of pressure drop and height of foam layer was established. The regression results show that the calculation model is fit well. Due to the presence of the solid phase, the required reflux ratio should be increased during the distillation.