反应与精馏耦合水解醋酸甲酯(英文)

A process composed of a fixed-bed and a distillation column with a side withdraw, mainly methanol, is developed to hydrolyze methyl acetate (MA) as a typical byproduct in polyvinyl alcohol (PVA) and pure terephthalic acid (PTA) factory. The process is simulated by employing the equilibrium stage model RadFrac and plug flow model Rplug in Aspen Plus. Experiments are also carried out in a lab-scale to evaluate the process. The results show that at the molar ratio of water to methyl acetate about 4.0-5.0 in the feed stream and the volume ratio of distillate to feed MA above a critical value, the side product contains more than 80% (by mass) (MeOH) and less than 2% (by mass) MA, while the bottom contains more than 46% (by mass) acetic acid (HAc) and less than 0.5% (by mass) methanol with almost complete conversion of MA. Compared with the old catalytic distillation process we proposed before, this process can cut down 47.6% energy consumption and a distillation column.     

三元体系液-液逆流萃取理论级数的计算机求解

液—液萃取的计算过程由于涉及到的体系常为三元体系,其平衡关系通常采用三角形相图来表示,因此其理论级数的求解常采用手工结合相图进行,为了解决手工结合相图计算过程繁杂且误差大的缺点,用最小二乘法对相平衡数据进行拟合,并用 Visual Basic 6.0语言对多级逆流萃取(包括完全不互溶和部分互溶两个体系)理论级数求解过程进行编程计算,实现三元体系液—液逆流草取理论级数的计算机自动精确求解。     

信息平台在清洁生产管理中的应用

为了提高清洁生产审核管理工作的效率,本文通过研究管理理论和信息交换模型选择适合本省清洁生产审核工作的扁平化管理模式和信息平台交换模型。结合本省清洁生产审核工作,详细描述了信息平台在清洁生产管理中的应用。     

清洁生产信息系统设计研究

介绍了清洁生产信息系统的组成及各个模块包含的内容与功能。描述了信息系统的系统配置、信息传输结构和数据安全的实现方式。