Development of Online Visualization Module for Ammonia Synthesis Converter Operation Line and Balance Line
Based on the selection of Gibbs reactor,the standard molar Gibbs free energy for ammonia formation in the UniSim process simulation software database is revised according to the relevant data of a three beds ammonia synthesis converter provided by a patent vendor.Combined with the actual production process of a 150 kt/a ammonia synthesis converter and the on-site production data collected by the distributed control system(DCS),the OPC communication protocol is used to update the dynamic input data of UniSim in real time,and a digital twin method of"production data driven+mechanism model"is constructed,achieving a high degree of consistency between the calculation results and the production data.By constructing online dynamic operating lines and a balance line for synthesis of ammonia,the online evaluation of the ammonia synthesis converter has been achieved and providing a digital basis for real-time operation decision-making and optimization.