规整填料蒸馏塔技术在常减压蒸馏中的应用

介绍了填料塔设计的基础；蒸馏过程的工艺模拟计算和设计步骤：填料选型、流体力学计算和塔内件设计等。以常减压蒸馏塔改造为例阐述了规整填料塔独特的优点是压降低、效率高和处理能力大。叙述了采用规整填料和高性能的气液分布器改造旧的板式常减压蒸馏塔，在不改变塔高和塔径的情况下，可提高拔出率２％以上，同时能适应增大处理能力和改善产品质量的要求。

THE USE OF STRUCTURED PACKING IN CRUDE DISTILLATION

structured packing has been widely used in petroleum refining. The key of design for distillation columns with structured packing is computer simulation of distillation processes. The column design includes packing selection, hydrodynamic calculation and internals design. Structured packings have the characteristics of a lower pressure drop in the vapor phase, a higher efficiency, and a higher capacity than trays, which were illustrated in some revamping examples of crude oil distillation columns. By replacing the trays in crude distillation with the structured packings and high performance gas/liquid distributors, the total product yield can be raised more than 2%. Meanwhile, product qualities can be improved and column capacity may be increased.