高压下滴流床反应器压降和液含率的预测

PREDICTION OF PRESSURE DROP AND LIQUID HOLD-UP IN HIGH PRESSURE TRICKLE BED REACTORS

采用Ａｌ－Ｄａｈｈａｎ的滴流床高压数据，确定了Ｈｏｌｕｂ详细模型中速率滑移因子ｆｖ和剪切滑移因子ｆｓ的关联式，并将简单模型和详细模型的预测与实验结果进行了比较．结果表明：在高压下详细模型的预测效果明显优于简单模型，且与实验值的偏差较小，使得Ｈｏｌｕｂ的基础模型的预测能力大大增强．

Using the available data (Al-Dahhan, 1993) gained from a trickle bed reactor under high pressure, the velocity slip factor ( f v) and the shear slip factor (f s) in Holub's (1990) detailed model are connected. With these modified factors, the prediction of pressure drop and liquid hold-up at high pressure and high gas flow rates by the detailed model is significantly better than those of the simple model.