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As a continuity of mass transfer equipment, packed tower has the advantages such as high efficiency, low pressure drop, small liquid volume, simple structure, easy installation, small investment, and it is widely used in the separation operation.

This article discusses the development status of packed
tower technology at home and abroad, and introduced all kinds of new type of random packings, structured
packing, liquid distributor and spray device structure characteristics, fluid
mechanics and mass transfer performance, and compares their advantages and
disadvantages respectively.

In the meantime,this article prospects the the future development trend and technology development direction of packed tower.

Keywords Spray device Packed tower Random packing Structured packing Liquid distributor

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摘要
Packed column as a continuous mass transfer equipment, With high efficiency, low pressure drop, liquid holdup small, simple structure,Easy to install, less investment, etc., are widely used separation operation.
Packed column discusses domestic technology development status, detailing the various new random packing, structured packing, liquid distributor and the structural characteristics of sprinklers, hydrodynamics and mass transfer performance and compare their advantages and disadvantages .Meanwhile prospect of a packed tower technology development trends and future directions.
关键词 Sprinklers Packed tower Random packing Structured packing Liquid distributor

如下 Packed tower as a continuous mass transfer equipment, has the advantages of high efficiency, pressure drop, holdup volume small, simple structure, the advantages of easy installation, less investment and so on, is widely used for the separation of operation. It describes the current situation of packed column technology at home and abroad, introduced a variety of new random packing, structured packing, liquid distributor and a spraying device structure, hydrodynamics and mass transfer performance, and their respective advantages and disadvantages. At the same time the prospect of packed tower in the future development trend and technology development direction. Keywords spray device packed tower bulk structured packing, liquid distributor in packed 望采纳