can you 'recondition' an old A/C drier?

Drier is full of desiccant. Desiccant can be dried in an oven...can you bring an old drier back to life by cooking it? LEts say the factory drier is not made anymore and your after stock appearance, or your just a miser.
What's it look like? My original one on my 70 Swinger got replaced with an identical one from the John Deere store.