摘要
With a particular focus on the connection between liquid flow distribution and gas-liquid mass transfer in monolithic beds in the Taylor flow regime, hydrodynamic and gas-liquid mass transfer experiments were carriedout in a column with a monolithic bed of cell density of 50 cpsi with trio different distributors （nozzle and packed bed distributors）. Liquid saturation in individual channels was measured by using self-made micro-conductivity probes. A mal-distribution factor was used to evaluate uniform degree of phase distribution in monoliths. Overall bed pressure drop and mass transfer coefficients were measured. For liquid flow distribution and gas-liquid masstransfer, it is found that the superficial liquid velocity is a crucial factor and the packed bed distributor is better than the nozzle distributor. A semi-theoretical analysis using single channel models shows that the packed bed distributor always yields shorter and uniformly distributed liquid slugs compared to the nozzle distributor, which in turn ensures a better mass transfer performance. A bed scale mass transfer model is proposed by employing the single channel models in individual channels and incorporating effects of non-uniform liquid distribution along the bedcross-section. The model predicts the overall gas-liquid mass transfer coefficient wig a relative error within ＋30%.
与在在在泰勒流动政体的整体的床上的液体流动分发和煤气液体的集体转移之间的连接的一个特别焦点，水动力学和煤气液体的集体转移实验与二个不同经销商(嘴和包装的床经销商)一起与 50 cpsi 的房间密度的一张整体的床在列被执行。在单个隧道的液体浸透被使用白手起家的测量微传导性的探针。一个 mal 分发因素被用来在独块巨石评估阶段分发的一致的度。全面的床压力落下和集体转移系数被测量。为液体流动分发和煤气液体的集体转移，表面的液体速度是一个关键因素，包装的床分发者比嘴分发者好，这被发现。用单个隧道模型的半理论的分析证明包装的床分发者总是与嘴分发者相比产出更短、一致地分布式的液体蛞蝓，它接着保证更好集体的转移表演。一个床规模团转移模型被在单个隧道雇用单个隧道模特儿并且沿着床剖面图合并不一致的液体分发的效果建议。
基金
Supported by the State Key Development Program for Basic Research of China (2006CB202503)
