A controlling method of total reflux by introducing temperatures of middle part and top part in batch distillation column was set up , and isopropanol and n - propanol were used to conduct the experimental study of this operation 摘要提出了采用塔顶和塔中温度进行控制操作状态转换的全回流间歇精馏控制方法,并以异丙醇正丙醇为实验物系进行了实验研究。
Compared with traditional batch distillation technique , the application of the continuous distillation technique in industry showed that it has characteristics of high purity and yield of product , steady quality of product , low energy consumption 该技术工业应用结果表明,与传统的间歇精馏技术相比,该技术具有产品含量和收率高、产品质量稳定及能量消耗低等特点。
Experimental results showed that the mixed solvents at the bottom and the product at the top of the column can be removed simultaneously for a long period of time in the middle - vessel batch distillation , and thus it requires a much smaller reboiler compared with a regular column 实验结果表明,带有中间贮罐的间歇萃取精馏过程在很长一段时间内具有塔顶采出产品,同时具有在塔底采出混和溶剂的特点,因而与常规间歇萃取精馏过程相比,带有中间贮罐塔时间精馏技术需要的再沸器体积大大减小。
Abstract : this paper reviewed the advances in the research of new mode of batch distillation in recent years . accumulative batch distillation 、 reverse batch distillation 、 middle vessel batch distillation and multi - effect batch distillation were mainly introduced . the characteristics and the future applications of these new modes of operation were also discussed 文摘:本文综述了国内外近年来间歇精馏新型操作方式的研究进展和发展方向,重点介绍了塔顶累积全回流操作、反向间歇精馏塔操作、中间贮罐以及多罐间歇精馏塔操作,阐述了这些新型操作方式的特点及应用前景。
Batch distillation refers to the use of distillation in batches, meaning that a mixture is distilled to separate it into its component fractions before the distillation still is again charged with more mixture and the process is repeated. This is in contrast with continuous distillation where the feedstock is added and the distillate drawn off without interruption.