With the intermittent process production project of Beijing industrial stabilizer ( ELF in France) as an example, how to divide and to design safety interlock layers for control system in technical process control are presented in detail. 以(法国ELF)北京工业稳定剂间歇过程生产项目为例,详细阐述了在工艺过程控制中如何划分和设计控制系统的安全联锁级。
Chemical production process of polyethylene catalyst is the representative of intermittent chemical production process which requires sequence, continuous and switch value control. The process needs mutual nesting interlock between the state of production equipment and the production step with rigorous production condition. 聚乙烯催化剂的生产属于典型的化工间歇生产过程,既要求顺序控制,也要求连续控制和开关量的控制,而且相关生产设备的状态和生产步骤之间要相互嵌套联锁、生产条件苛刻。
A triple effect evaporation intermittent distillation process is used to recover caprolactam in the extraction wastewater from nylon 6 production. 采用三效蒸发-间歇蒸馏技术,从锦纶6生产装置的萃取废水中回收己内酰胺。
The intermittent esterification ester replaced process was analysed in this paper. The production process of fatty acid methyl ester with high acid value acidulated oil and fatty acid replaced superior quality fat and oil by high temperature gas phase method and supplemental ester translation process was also introduced. 对间歇式酯化-酯交换工艺进行了具体分析,并着重介绍了采用高温气相法及补充酯交换工艺,以高酸值酸化油和脂肪酸代替高档油脂生产脂肪酸甲酯的生产工艺。