Dynamic Process Simulation And Optimization Of Rectisol

"Rich coal,poor oil and low gas"is the most significant feature of China’s energy distribution,so the development of new coal chemical products process route,reduce oil dependence has extraordinary significance for China’s energy structure optimization.Common coal chemical process routes are:coal gasification technology to methanol,coal to oil,coal to olefins,etc.,and Rectisol is an indispensable unit in almost all coal chemical processes.Under the background of the urgent demand for domestic substitution of industrial software,this paper uses the dynamic simulation platform developed by the research group to construct a simulation model of the purification290270 Nm~3/h syngas Rectisol process,and further complete the system integration test and process scheme diagnosis of the Rectisol process.Based on the process simulation model,the interface and configuration tools of DCS were reconstructed using the Qt framework,and a simulator of the 290270Nm~3/h syngas Rectisol process was developed.This simulator can be used as a technical tool for process dynamic characteristic analysis,control scheme design,and start-up strategy formulation.The focus of this paper is on the dynamic simulation of the Rectisol process and the development of a simulator for Rectisol devices.Firstly,the Rectisol process is simulated in a steady-state process,and the complete process parameters of key equipment such as absorption tower,desorption tower and regeneration tower in the process package are obtained by selecting the physical property method,accounting for the data of the process package and building a heat exchange network,so as to provide methods and data support for the establishment of dynamic models.Secondly,modeling,combined with the dynamic simulation platform independently developed by the laboratory,using the topology to connect the unit process model to each other according to the process,the establishment of the dynamic model of the Rectisol process was completed.Thirdly,using the process dynamic model,the dynamic characteristics of the equipment for each working condition are studied and analyzed,and the control scheme of the whole process is designed.Then,the imitation DCS software and configuration software are developed,and the process dynamic model calculation results are connected to the operation interface of the DCS through configuration(the dynamic simulation system of the process is graphically defined),and the Rectisol device simulator is obtained.Finally,by developing and optimizing the start-up plan of the process,the simulator of the l Rectisol unit was debugged to run to a steady-state state.The above research content and the developed tools can provide a theoretical and technical basis for the design and operation of the syngas Rectisol process.