The Simulation And Optimization Of Semi-Regenerative Catalytic Reforming Process

While the domestic automobile consumption was increased steadily, the haze issue is receiving unprecedented attention. Promoting cleaner gasoline to mitigate the air pollution is in crucial position. One of the main tasks of the catalytic reforming process is the production of clean high-octane gasoline, which developing prospects are very bright. This article will focus on the simulation and optimization of semi-regenerative catalytic reforming process, and analyze the reaction conditions and optimize operating parameters with the methods of process systems engineering, and make improvements for circulating hydrogen separation process, to achieve energy saving goals.Catalytic reforming reaction is an important refinery process, of which research has been more mature. But these studies usually use the method of the computer programming or user model extension method or other similar ways, which is difficult for the application in factory. With technology development, a lot of process simulation software developed mature refining reaction module, which has a good user interface. This paper used Aspen HYSYS in simulation of a semi-regenerative catalytic reforming; optimized its operation parameters; improved its process, to provide scientific guidance for the refinery production.In this paper, process systems engineering method has been used for a semi-regenerative catalytic reforming unit, establishing reaction and separation model in HYSYS, to simulate actual production conditions. On this basis, with the method of sensitivity analysis, we did the study of the effects of various operating parameters on production. What’s more, we tried to strengthen the reaction recycle hydrogen separation by improving the process; to recover low temperature heat; to reduce compressor power consumption. The paper is characterized by the establishment of the whole process model including semi-regenerative reforming reaction and reaction product separation, which achieved the goal of full simulation of working conditions from raw materials to production. After calibration, the model can be applied to optimize manufacturing operations, including reaction temperature, reaction pressure, hydrogen oil ratio, LHSV and reflux flow rate, to observe the connection between these parameters with product yield, catalyst life and equipment energy consumption. So we can provide reasonable adjustments to actual operations. In addition, this article attempts to apply continuous reforming energy-saving technology to the semi-regenerative reforming, for the prevalent high energy consumption problem. We can calculate the reaction product composition change in the reaction module after the process adjustment, and the result shows that we can reduce the compressor load 206kW.On the basis of field research, process simulation results with the actual conditions of production in this article are consistent, and the sensitivity analysis of key operating parameters is consistent with the experienced law. So this paper basically achieved the desired objectives for guiding the production, and the practical of process simulation software has been well reflected. At last, through the simulation, we expected to achieve good results of changes in production and energy consumption after processes improved.