Adsorption dryer

An adsorption dryer for drying a compressed gas, the adsorption dryer comprising:

• at least one pressure vessel including an adsorption material for adsorbing moisture from the compressed gas, the dryer being primed to carry out a process in which
• in a drying mode for drying the compressed gas, the compressed gas flows from a drying inlet through a drying zone to a drying outlet, passing through the pressure vessel along the adsorption material, and exiting as a dried compressed gas, and
• in a regeneration mode for regenerating the adsorption material, a regeneration gas flows from the drying outlet through the drying zone to the drying inlet, passing through the pressure vessel along the adsorption material, and in doing so drawing moisture out of the adsorption material, wherein
• in the regeneration mode, there is partial heating in a heating region in the pressure vessel, and wherein
• the heating region is arranged only in a subregion of the pressure vessel adjoining the drying inlet.

A compressed gas system for providing dried compressed gas, the compressed gas system comprising:

• a compressor for compressing gas into a compressed gas,
• an adsorption dryer including a plurality of pressure vessels filled with an adsorption material, the pressure vessels each having
• a drying zone for drying the compressed gas, and
• a heating region that extends over a portion of the drying zone, wherein a heat exchanger is provided and configured to heating the heating region, the heat exchange being connected to the compressor so as to heat the heating region with waste heat from the compressor.