How to choose the inclination Angle of structured packing

The selection of inclined Angle of structured packing should comprehensively consider mass transfer efficiency, pressure drop, flow direction and working condition requirements, and the specific principles are as follows:

Common Angle of corrugated packing

The most widely used corrugated packing in the structured packing of Hengerwo Chemical industry, the Angle of the corrugated and the tower shaft is usually **30° or 45°** two. Among them:

30° inclination (Type X) : Pressure reduction, suitable for scenarios sensitive to pressure drop (such as vacuum rectification).

45° inclination (Y type) : Better mass transfer performance, suitable for high separation requirements or large gas-liquid load conditions.

The effect of flow direction on Angle

Upward flow (gas-liquid flow in the same direction) : it is necessary to take into account the sludge/liquid slip and separation efficiency, and the inclination Angle is generally not less than **55°~60°** (similar to the design concept of inclined tube sedimentation tank).

Downward flow (reverse flow of gas and liquid) : mud discharge is easier, and the inclination Angle can be appropriately reduced to 30°~40°.

Liquid distribution uniformity optimization

The experimental results show that the lateral liquid distribution ability of the 45° inclination packing is better than that of the 30° inclination packing, which can reduce the phenomenon of liquid accumulation in the wall area and improve the overall separation efficiency.

Overall performance balance

For high separation efficiency (e.g., difficult-to-separate system rectification), 45° inclination is preferred.

If the pressure drop control is strict (such as large diameter towers or high energy saving requirements), choose 30° inclination.

Sample selection:

In the vacuum distillation column of petrochemical industry, if the metal wire mesh corrugated packing is used, the 45° inclination Angle is preferred to improve the separation efficiency. In the upflow sedimentation tank of wastewater treatment, the inclined plate Angle above 55° should be used to ensure the smooth discharge of mud.