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An air dryer with a rotor and desiccant positioned within an interior chamber of the rotor. The desiccant is positioned within the interior chamber of the rotor between the inlet and the outlet. The desiccant is configured to adsorb at least some of the water contained within air flowing from an inl

An air dryer with a rotor and desiccant positioned within an interior chamber of the rotor. The desiccant is positioned within the interior chamber of the rotor between the inlet and the outlet. The desiccant is configured to adsorb at least some of the water contained within air flowing from an inlet to an outlet of the rotor. As the rotor is rotated at a regeneration speed at least some of the water adsorbed by the desiccant moves to the outer surface of the desiccant and at least some of the water is separated from the outer surface of the desiccant. The rotor directs water separated from the outer surface of the desiccant to at least one opening in the rotor. A method for drying air by sending the air through desiccant and rotating the desiccant at a regeneration speed to separate water from the desiccant.

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1. An air dryer comprising: a rotor comprising one or more walls that define an interior chamber, wherein a plurality of openings are formed in the rotor and are each in fluid communication with the interior chamber, wherein at least one of the openings comprises an inlet, wherein an outlet is forme

1. An air dryer comprising: a rotor comprising one or more walls that define an interior chamber, wherein a plurality of openings are formed in the rotor and are each in fluid communication with the interior chamber, wherein at least one of the openings comprises an inlet, wherein an outlet is formed in the rotor and is in fluid communication with the interior chamber, wherein the inlet is configured to receive air containing water, and wherein at least one of the one or more walls is sloped from at least one of the openings to the outlet; anddesiccant positioned within the interior chamber between the inlet and the outlet, wherein the desiccant comprises an outer surface positioned adjacent to the rotor, wherein the desiccant is configured to adsorb at least some of the water contained within air flowing from the inlet to the outlet, wherein the desiccant is structured so that as the rotor is rotated at a regeneration speed at least some of the water moves to the outer surface and at least some of the water is separated from the outer surface, and wherein the at least one sloped wall of the rotor is structured to direct water separated from the outer surface to at least one of the openings. 2. The air dryer of claim 1, wherein the one or more walls comprise a side wall, wherein the plurality of openings are formed in the side wall, and wherein the side wall is sloped from at least one of the openings to the outlet. 3. The air dryer of claim 2, wherein the rotor comprises first and second ends and the side wall extends between the first and second ends, wherein the plurality of openings are positioned adjacent to the first end and the outlet is formed in the second end. 4. The air dryer of claim 3, wherein each of the plurality of openings comprises both the inlet and a drain. 5. The air dryer of claim 3, wherein the rotor further comprises a desiccant cartridge that comprises at least a portion of the side wall and defines at least a portion of the interior chamber. 6. The air dryer of claim 2, wherein the desiccant substantially fills the interior chamber and the outer surface of the desiccant abuts the side wall. 7. The air dryer of claim 6, wherein the outer surface of the desiccant is sloped. 8. The air dryer of claim 1, wherein the rotor is coupled with an air compressor shaft. 9. The air dryer of claim 1, further comprising a housing comprising an air inlet, an air outlet, and a drain, wherein the rotor is positioned within the housing such that the air inlet of the housing is in fluid communication with the inlet of the rotor, the air outlet of the housing is in fluid communication with the outlet of the rotor, and the drain is in fluid communication with at least one of the openings. 10. The air dryer of claim 9, wherein an expansion chamber is positioned between an inner surface of the housing and the rotor, wherein the expansion chamber is in fluid communication with the air inlet of the housing, the inlet of the rotor, and the drain of the housing. 11. The air dryer of claim 1, wherein the desiccant comprises a monolith. 12. The air dryer of claim 1, wherein the desiccant comprises a plurality of beads. 13. A method for drying air containing water with a rotor comprising one or more walls defining an interior chamber, wherein a plurality of openings are formed in the rotor and are each in fluid communication with the interior chamber, wherein at least one of the openings comprises an inlet, wherein an outlet is formed in the rotor and is in fluid communication with the interior chamber, wherein desiccant is positioned within the interior chamber between the inlet and the outlet, and wherein at least one of the one or more walls is sloped from at least one of the openings to the outlet, comprising: sending the air through the inlet and through the desiccant so that the desiccant adsorbs at least some of the water; androtating the rotor and the desiccant at a regeneration speed sufficient to move at least some of the water to an outer surface of the desiccant and separate at least some of the water from the outer surface of the desiccant, and wherein the at least one sloped wall of the rotor directs water separated from the outer surface to at least one of the openings. 14. The method of claim 13, further comprising condensing at least some of the water before sending the air through the desiccant. 15. The method of claim 14, wherein the water is condensed by reducing the temperature of the air. 16. The method of claim 15, wherein the temperature of the air is reduced by reducing the pressure of the air in an expansion chamber. 17. The method of claim 13, further comprising collecting the water separated from the desiccant. 18. The method of claim 13, wherein the desiccant is rotated by an air compressor. 19. The air dryer of claim 10, wherein the expansion chamber is positioned between the air inlet of the housing and the inlet of the rotor, and wherein the expansion chamber is positioned between the drain of the housing and the inlet of the rotor. 20. An air dryer comprising: a housing comprising a first inlet, a first outlet, a drain, and an inner surface;a rotor that is at least partially positioned within the housing to form an expansion chamber between the inner surface of the housing and the rotor, wherein the expansion chamber is in fluid communication with the first inlet and the drain of the housing, wherein the rotor comprises an interior chamber, wherein a plurality of openings are formed in the rotor and are each in fluid communication with the interior chamber, wherein at least one of the openings comprises a second inlet that is in fluid communication with the expansion chamber, wherein a second outlet is formed in the rotor and is in fluid communication with the interior chamber and the first outlet of the housing, wherein the second inlet is configured to receive air containing water, wherein the drain of the housing is in fluid communication with at least one of the openings of the rotor, wherein the expansion chamber is positioned between the first inlet of the housing and the second inlet of the rotor, and wherein the expansion chamber is positioned between the drain of the housing and the second inlet of the rotor; anddesiccant positioned within the interior chamber of the rotor between the second inlet and the second outlet, wherein the desiccant comprises an outer surface positioned adjacent to the rotor, wherein the desiccant is configured to adsorb at least some of the water contained within air flowing from the second inlet to the second outlet, wherein the desiccant is structured so that as the rotor is rotated at a regeneration speed at least some of the water moves to the outer surface and at least some of the water is separated from the outer surface, and wherein the rotor is structured to direct water separated from the outer surface to at least one of the openings. 21. The air dryer of claim 20, wherein the rotor comprises a side wall at least partially defining the interior chamber, and wherein the plurality of openings are formed in the side wall. 22. The air dryer of claim 21, wherein the rotor comprises first and second ends and the side wall extends between the first and second ends, wherein the plurality of openings are positioned adjacent to the first end and the second outlet is formed in the second end. 23. The air dryer of claim 22, wherein each of the plurality of openings comprises both the second inlet and a drain. 24. The air dryer of claim 22, wherein the rotor further comprises a desiccant cartridge that comprises at least a portion of the side wall and defines at least a portion of the interior chamber. 25. The air dryer of claim 21, wherein the desiccant substantially fills the interior chamber and the outer surface of the desiccant abuts the side wall. 26. The air dryer of claim 25, wherein the outer surface of the desiccant is sloped, and wherein the side wall is sloped from at least one of the openings to the second outlet.