What are the most commonly used structured packings

The most commonly used structured packings mainly include the following types:

Vertical corrugated packing

This kind of packing is the most widely used, divided into plate ripple type and net ripple type. Among them:

Corrugated metal plate packing: corrugated plate stamped holes or rolled grooves to promote liquid distribution and lateral mixing, suitable for large diameter towers and high load scenarios 125.

Wire mesh corrugated packing (such as BX, CY type) : made of wire mesh, low pressure, high separation efficiency, often used in precision distillation and heat sensitive material treatment 135.

Punctural corrugated packing: the surface has dense small punctural holes, strong plugging resistance and low cost, and the comprehensive performance is close to the wire mesh corrugated packing 125.

Metal ring torque saddle packing

Combined with the ring and saddle structure, it has the characteristics of low pressure drop, high flux and high mass transfer efficiency, and is known as the representative of the third generation of structured packings, which is widely used in the industrial field 125.

Grid packing

Including grille grid, mesh grid, etc., mainly used for small pressure drop requirements, anti-blocking and large load scenarios, but the specific surface area is low 35.

Pulse packing

Assembled from a necking prism, the turbulent mass transfer is enhanced by alternating shrinking and expanding flow channels, suitable for vacuum distillation and large column diameter35.

In addition, plastic structured packings (such as honeycomb inclined pipe, straight pipe) and ceramic corrugated packings are also widely used in specific fields (such as water treatment, environmental protection) 12.