关键词:

乙炔加氢反应器, 非均相, 动态模拟, 参数分析, 稳定性分析

Abstract:

The industrial acetylene hydrogenation system has the characteristics of nonlinearity and slow parameter variance.The model, which is applied to model predictive control currently, is so simple that the predictive control result could not achieve the optimal effect during a long-term operation.So it is necessary to establish an accurate model of reactor as the virtual instrument in laboratory.Based on the model, it is possible to further study the more effective control method.In this paper, a heterogeneous, two-dimensional and dynamic model for an industrial acetylene hydrogenation system was developed through process analysis.The condition for activity loss with time, due to hydrocarbon deposition resulting from acetylene green oils, was also considered.The dynamic process simulation software gPROMS was utilized to perform its simulation, and the dynamic process could predict the changing trend.The effects of important parameters on the system simulation were analyzed, and a group of parameter values were chosen for the reactor which was studied in this paper.By linearizing the dynamic model at different operation points, the different latent roots of the linear state space model were obtained and used to analyze the system stability at different operation points.The simulation and stability analysis showed that the reactor was under control.

Key words:

乙炔加氢反应器, 非均相, 动态模拟, 参数分析, 稳定性分析