论文部分内容阅读
在酸-醛法合成甲基异丙基酮(MIPK)的反应粗产物中,水与MIPK、二异丙基酮(DIPK)等均形成共沸物,使得MIPK的分离精制变得非常困难,文中采用剩余曲线图法对丙酮-MIPK-水三元物系进行分析,提出了通过利用中间分离器在一个精馏塔中实现丙酮和水同时脱除的节能型精馏过程,并运用奇异值分解(SVD)方法对提出的节能型精馏过程进行分析,选择了适宜的控制方案,建立了相应的动态模拟模型,对控制系统的动态特性进行了分析。结果表明,文中提出的控制方案具有较好的抗扰动能力。
In the acid-aldehyde synthesis of methyl isopropyl ketone (MIPK) of the crude reaction, water and MIPK, diisopropyl ketone (DIPK) and so on are formed azeotrope, MIPK separation and purification become very difficult, In this paper, residual curve method was used to analyze the acetone-MIPK-water ternary system, and the energy-saving rectification process of simultaneous acetone and water removal in a rectification tower by using an intermediate separator was proposed. The singular value (SVD) method to analyze the proposed energy-saving distillation process, select the appropriate control program, set up a corresponding dynamic simulation model, the dynamic characteristics of the control system were analyzed. The results show that the control scheme proposed in this paper has better anti-disturbance ability.