提出了一种电子级丙酸乙酯合成的新工艺,即在酯化合成丙酸乙酯的过程中,采用无机分子筛膜脱水并经实验验证效果,打破了乙醇-丙酸乙酯-水三元恒沸体系,避免了萃取剂和带水剂的使用;利用Aspen Plus V10化工模拟软件对丙酸与乙醇摩尔比为1...提出了一种电子级丙酸乙酯合成的新工艺,即在酯化合成丙酸乙酯的过程中,采用无机分子筛膜脱水并经实验验证效果,打破了乙醇-丙酸乙酯-水三元恒沸体系,避免了萃取剂和带水剂的使用;利用Aspen Plus V10化工模拟软件对丙酸与乙醇摩尔比为1∶1的该丙酸乙酯连续合成工艺进行了模拟及优化。模拟结果表明,在优化工艺条件下,采用两个精馏塔可实现丙酸乙酯产品纯度大于99.9999%(w),水和乙醇含量均低于1×10^(-6)(w),丙酸乙酯设计产能为8000 t/a时总能耗为2.78×10^(6)kJ/h。新工艺不仅节约了投资成本,提升了产能,且在低能耗下实现了高品质丙酸乙酯的连续合成。展开更多
This paper discusses feedback Stackelberg strategies for the continuous-time mean-field type stochastic systems with multiple followers in infinite horizon.First,optimal control problems of the followers are studied i...This paper discusses feedback Stackelberg strategies for the continuous-time mean-field type stochastic systems with multiple followers in infinite horizon.First,optimal control problems of the followers are studied in the sense of Nash equilibrium.With the help of a set of generalized algebraic Riccati equations(GAREs),sufficient conditions for the solvability are put forward.Then,the leader faces a constrained optimal control problem by transforming the cost functional into a trace criterion.Employing the Karush-Kuhn-Tucker(KKT)conditions,necessary conditions are presented in term of the solvability of the cross-coupled stochastic algebraic equations(CSAEs).Moreover,feedback Stackelberg strategies are obtained based on the solutions of the CSAEs.In addition,an iterative scheme is introduced to obtain efficiently the solutions of the CSAEs.Finally,an example is given to shed light on the effectiveness of the proposed results.展开更多
文摘提出了一种电子级丙酸乙酯合成的新工艺,即在酯化合成丙酸乙酯的过程中,采用无机分子筛膜脱水并经实验验证效果,打破了乙醇-丙酸乙酯-水三元恒沸体系,避免了萃取剂和带水剂的使用;利用Aspen Plus V10化工模拟软件对丙酸与乙醇摩尔比为1∶1的该丙酸乙酯连续合成工艺进行了模拟及优化。模拟结果表明,在优化工艺条件下,采用两个精馏塔可实现丙酸乙酯产品纯度大于99.9999%(w),水和乙醇含量均低于1×10^(-6)(w),丙酸乙酯设计产能为8000 t/a时总能耗为2.78×10^(6)kJ/h。新工艺不仅节约了投资成本,提升了产能,且在低能耗下实现了高品质丙酸乙酯的连续合成。
基金This research was supported by the National Natural Science Foundation of China under Grant Nos.61903234 and 61973198.
文摘This paper discusses feedback Stackelberg strategies for the continuous-time mean-field type stochastic systems with multiple followers in infinite horizon.First,optimal control problems of the followers are studied in the sense of Nash equilibrium.With the help of a set of generalized algebraic Riccati equations(GAREs),sufficient conditions for the solvability are put forward.Then,the leader faces a constrained optimal control problem by transforming the cost functional into a trace criterion.Employing the Karush-Kuhn-Tucker(KKT)conditions,necessary conditions are presented in term of the solvability of the cross-coupled stochastic algebraic equations(CSAEs).Moreover,feedback Stackelberg strategies are obtained based on the solutions of the CSAEs.In addition,an iterative scheme is introduced to obtain efficiently the solutions of the CSAEs.Finally,an example is given to shed light on the effectiveness of the proposed results.