Raschig Rings for Cryogenic Processes

Raschig rings can help enhance the separation efficiency of your cryogenic process by creating intricate pathways for gas and liquid flow, encouraging solute molecules to move between phases more freely and improving mass transfer for improved separation effectiveness resulting in improved product purity and quality.

Raschig rings are known for their strength and resistance to fouling, making them an excellent choice for numerous industrial applications. Unfortunately, however, their design can lead to high pressure drops and reduced efficiency compared to more modern options such as Pall rings.

These variations may be attributable to each pellet having an internal hole, providing additional dead zones and sources for eddy formation in a packed bed, which leads to higher pressure drops than predicted by the modified Ergun equation.

Ceramic raschig rings have proven themselves an efficient packing material for various chemical processing applications. Able to withstand high temperatures and chemical reactions while being corrosion resistant, ceramic raschig rings offer optimal mass transfer efficiency as they feature a large surface area-to-volume ratio and maximize heat transfer efficiency.

Ceramic rings offer superior abrasion resistance, making them suitable for applications requiring high mechanical stress, such as distillation and absorption towers, stripping columns to remove volatile components from gas streams, or distillation towers to filter liquid wastes. Alumina or other specialty ceramic materials may further increase this property.