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Development of a dynamic simulator for distillation of vapor-liquid-liquid systems with packed columns

开发用于填充塔汽-液-液系统蒸馏的动态模拟器

基本信息

批准号：
10650739
负责人：
KOSUGE Hitoshi
金额：
$ 2.56万
依托单位：
Tokyo Institute of Technology
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1998
资助国家：
日本
起止时间：
1998 至 1999
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-10650739/
关键词：
Distillation Vapor-liquid-liquid Mass Transfer Simulation 気液液素回分式

项目摘要

The final purpose of the present work is to develop a dynamic simulator for distillation of vapor-liquid-liquid systems, that is, for heterogeneous distillation with packed columns. Since the simulator for packed columns requires heat and mass transfer models, heat and mass transfer rates were measured in heterogeneous distillation with packed columns having structured packing. A steady state simulator for heterogeneous distillation with packed columns under total reflux conditions was developed based on heat and mass transfer models. The predicted concentrations and flow rates in packed columns by the present simulator agreed with the observed ones. Those results have been published in an academic journal. Furthermore, a steady state simulator was developed for heterogeneous distillation by packed columns with one feed flow, top and bottom product flows and reflux of oil phase liquid at the top. The effect of operating conditions on the separation performance of packed columns was studied.On the other hand, the experiments of batch distillation were made by a packed column having structured packing with a distillate receiver at the top of the column. The dynamic behavior of liquid concentrations at top reflux, condensate at total condenser and bottom reflux was studied. The observed data were compared with the predicted values by a dynamic simulator for tray tower.Development of a dynamic simulator for batch distillation based on heat and mass transfer models has been made and will be continued. Furthermore, a dynamic simulator for heterogeneous distillation with packed columns will be developed.

本工作的最终目的是开发一个汽-液-液体系精馏的动态模拟器，即填料塔非均相精馏的动态模拟器。由于填料塔的模拟需要传热传质模型，因此在具有规整填料的填料塔中测量了非均相精馏的传热传质速率。基于传热传质模型，开发了全回流条件下填料塔非均相精馏过程的稳态模拟程序。用该模拟器对填料塔内的浓度和流速进行了预测，预测结果与实测值吻合较好。这些结果已发表在一份学术期刊上。在此基础上，开发了一个单进料、顶、底产品、顶部油相液体回流的填料塔非均相精馏稳态模拟程序。考察了操作条件对填料塔分离性能的影响，并在一个顶部装有馏出液接收器的规整填料塔上进行了间歇精馏实验。研究了塔顶回流液浓度、全冷凝器冷凝液浓度和塔底回流液浓度的动态变化规律。将实测数据与板式塔动态模拟器的预测值进行了比较，开发了基于传热传质模型的间歇精馏动态模拟器。此外，还将开发填料塔非均相精馏的动态模拟程序。