The column of reactive distillation was improved from compound tower to sievetraytower which is famous for its lower cost of equipment and simpler operation and cleaning.
反应精馏塔由原来的复合型塔改为单纯筛板塔，操作清洗简单、设备费用低。
2
The design method of structures of sievetraytower is discussed. Some new computation methods and simple formula are proposed. Simulated computations are carried out by practical examples.
对筛板塔的结构设计问题进行了讨论，提出了一些新的计算方法和简化的计算公式，并用实例进行了模拟计算。
3
This paper summaries the fluid mechanics property and the research of mass transferred property, the advanced progress of the New VST (New Vertical SievetrayTower) in our country is also expounded.