Development And Application Of Physical Model Of Amine Absorption And Regeneration Process

Alcohol amine process technology,as a common means of removing acid gases in chemical production,is widely used in petrochemical,coal industry,synthetic ammonia,steel plants,power generation and other fields.By simulating the amine absorption and regeneration process,the alcohol amine process can be designed,optimized and modified to improve the acid gas absorption efficiency,and the accuracy of the simulation results depends on the accuracy of the model.Therefore,it is of great theoretical value and practical significance to develop physical properties model of amine absorption and regeneration process based on CAPE-OPEN standard.In the development environment of Visual Studio 2005,this paper uses the Visual C++ programming language to develop a physical model of the amine absorption and regeneration process that follows the CAPE-OPEN standard.First,the SQLite database management system was used to build an electrolyte component database containing more than 2,100 electrolyte components with 35 basic physical properties,an ion physical property database containing more than 220 ion components with 25 ionic properties,and more than 150 ion equation of the ion equation database,and realize the connection with the simulation software through C++ language;secondly,through the study of the amine absorption and regeneration process,based on the CAPE-OPEN standard,using COM component technology,4 physical property methods have been developed : Kent-Eisenberg model based on semi-empirical model and ELECTRTL model,unsymmetric-eNRTL model and symmetric-eNRTL model based on strict model.Then,through the example,the four physical property models developed are tested under the self-developed simulation software,and the calculation results are compared with the calculation results of mainstream chemical simulation software.The results show that the calculated value of the physical property model of the developed amine liquid absorption and regeneration process is basically consistent with the calculation results of the current mainstream chemical simulation software.The model accuracy is high,and the amine liquid absorption and regeneration process can be simulated accurately.Finally,it is applied to a single tower sewage stripping device of a factory in an industrial production example,and the unit module simulation results are analyzed and compared with actual plant data and unit module design values.The results show that the developed physical model of amine absorption and regeneration process can accurately simulate the actual industrial process,and the simulation results are accurate and reliable.The physical property model of the amine system developed based on the CAPE-OPEN standard has important theoretical and practical values.In addition,each physical property model has a clear structure and is independent of each other,which facilitates subsequent maintenance and optimization.