Raschig ring

Older generation packing include ceramic Raschig rings and Berl saddles.

This packing material can either be random dumped packing such as Raschig rings or structured sheet metal.

Raschig rings are named after their inventor, the German chemist Friedrich Raschig.

The packing can be randomly filled with small objects like Raschig rings or else it can be a specifically designed structured packing.

He also developed improvements to distillation, in particular the Raschig ring, small metal or ceramic rings which are used in commercial fractional distillation columns.

Raschig rings are pieces of tube (approximately equal in length and diameter) used in large numbers as a packed bed within columns for distillations and other chemical engineering processes.

The vertical section of the separator is for the disengagement and venting of excess air and includes a Raschig ring section to prevent entrainment of any disulfides in the vented air.

Raschig rings made from borosilicate glass are sometimes employed in the handling of nuclear materials, where they are used inside vessels and tanks containing solutions of fissile material, for example solutions of enriched uranyl nitrate, acting as neutron absorbers and preventing a potential criticality accident.