关键词: 多模型自动切换, 丁辛醇装置, 氢碳比, 智能控制, 先进控制系统, 控制器, 智能专家, MPC模型预测

Abstract:

The advanced control technology was used to realize the multivariable predictive control of the butanol octanol unit, which improved the running stability of the unit. The fluctuation variance of the main process parameters such as the reaction temperature of the carbonyl synthesis reactor, the outlet temperature of the condensation reaction heater, and the liquid level of the butyraldehyde evaporator tower decreased by more than 70% on average. The product quality was optimized. After the advanced control was put into use, the propylene consumption decreased by 2.79 kg/t, and the unit consumption decreased by 0.46%. The economic benefit of saving propylene was more than two million yuan every year. Due to the unstable control and high operating intensity of the hydrogen carbon ratio index of the butanol octanol unit, the three automatic control schemes of the hydrogen carbon ratio and the actual operation effect were compared, analyzed, studied and demonstrated. Finally, the intelligent control and stable control of the hydrogen carbon ratio of butanol octanol were realized by using the multi model automatic switching technology innovatively, which improved the anti-interference ability of the hydrogen carbon ratio, and has an important reference significance for the further application of advanced control systems.

Key words: multiple model automatic switching, butanol octanol unit, hydrogen carbon ratio, intelligent control, advanced control system, controller, intelligence expert, MPC model prediction