【作者】 刘晶晶；

【导师】 夏力；

【作者基本信息】 青岛科技大学 ， 化学工程与技术， 2020， 硕士

【摘要】 醇胺法工艺技术作为化工生产过程中脱除酸性气体的常用手段,广泛应用于石油化工、煤化工、合成氨及钢厂和发电等领域。通过对胺液吸收与再生过程进行模拟研究,可以对醇胺法工艺进行设计、优化和改造,提高酸气吸收效率,而模拟结果能否准确可靠取决于模型的精度。因此,开发基于CAPE-OPEN标准的胺液吸收与再生过程物性模型具有重要的理论价值和实际意义。在Visual Studio 2005开发环境下,采用Visual C++编程语言开发出遵循CAPE-OPEN标准的胺液吸收与再生过程物性模型。首先,使用SQLite数据库管理系统建立了包含35项基础物性的2100多种电解质组分的电解质组分数据库,包含25项离子物性的220多种离子组分的的离子物性数据库,以及包含150多个离子方程式的离子方程式数据库,并通过C++语言实现与模拟软件之间的衔接;其次,通过对胺液吸收与再生过程进行研究,基于CAPE-OPEN标准,采用COM组件技术,开发了4个物性方法:基于半经验模型的Kent-Eisenberg模型以及基于严格模型的ELECNRTL模型、unsymmetric-eNRTL模型和symmetric-eNRTL模型。然后,通过实例在自主研发的模拟软件下对所开发的4种物性模型进行检验,并将计算结果与主流化工模拟软件的计算结果进行比较分析。结果表明,所开发的胺液吸收与再生过程物性模型计算值与当前主流化工模拟软件计算结果基本吻合,模型精度较高,可以较为准确的对胺液吸收与再生过程进行模拟计算。最后,应用于工业生产实例某工厂单塔污水汽提装置,并将单元模块模拟结果与实际工厂数据以及单元模块设计值进行分析比较。结果表明,开发的胺液吸收与再生过程物性模型可准确模拟实际工业流程,模拟结果准确可靠。基于CAPE-OPEN标准开发的胺体系物性模型,具有重要的理论价值和实用价值。此外,各个物性模型结构清晰,相互独立,便于后续的维护与优化。更多还原

【Abstract】 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.更多还原