The best method for drying zeolite is thermal regeneration, where the zeolite is heated to a temperature between 150°C and 300°C to remove moisture or adsorbed materials. This heating process desorbs water from the zeolite’s pores, restoring its adsorption capacity. Dry air or an inert gas is often passed through the zeolite bed to aid in the moisture removal process, ensuring efficient drying without damaging the zeolite’s structure.

In addition to thermal regeneration, it is important to consider the specific operating conditions and the properties of the zeolite itself when choosing a drying method. For example, it can be useful to evaluate:
Particle size and shape of the zeolite, since fine grains heat up faster but may create higher flow resistance;
Degree of saturation or contamination, which affects the required temperature and regeneration time;
Energy and operational constraints, such as the availability of dry purge gas or the possibility of heat recovery.
In some cases, combining a preliminary purge with dry gas at a lower temperature followed by thermal regeneration can reduce overall energy consumption and shorten the process time.
For a more detailed explanation of zeolite regeneration mechanisms, especially in the context of gas dehydration and process efficiency, it is worth reading this article:
https://globecore.com/news/zeolite-regeneration-intended-for-gas-dehydration.
It provides useful technical insights that are often not covered in brief forum answers.