板式膜反转降膜吸收器设计与性能研究

板式膜反转降膜吸收器是一种将板式降膜吸收和膜反转技术相结合而开发的新型吸收器,合理设计与掌握其吸收性能对今后这种吸收器的工程应用十分重要.为此,通过建立、求解板式膜反转降膜吸收过程的数学模型,确立了设计条件下最佳吸收器结构;对于所设计的板式膜反转吸收器进行了不同吸收压力、溶液流量、进口浓度、进口温度及冷却条件下传热传质性能的计算,并与竖板降膜吸收器进行了比较.

Design and Performance Study of Plate Falling Film Absorber with a Film- inverting Configuration

Plate falling film absorber with a film - inverting configuration is a new kind of absorber that combines the plate falling film absorption technique and the film - inverting technique. In this study, the absorber's structure under design condition was determined by building and solving mathematical model of the plate falling film absorption process with film inverting configuration. The heat and mass transfer performances were calculated by the model under different solution flow rates, its inlet concentrations, its inlet temperatures, absorption pressures, and cooling conditions. Then the comparisons were performed between the new designed film - inverting absorber and the designed vertical plate falling film absorber.