Patent ID: RE39122

Claim:
A system for drying gas from a source comprising: a compressor having as inlet connected to the source, a compression stage, a heat exchanger, and an outlet: a first tower and a second tower, each said tower containing desiccant material past which said gas flows; and communication means being capable of connecting said first tower to said compression stage and to said heat exchanger such that heated gas flows from said compression stage, through said first tower and into said heat exchanger to regenerate said desiccant material in said first tower, and being capable of connecting said second tower to said outlet of said compressor and to an outlet of said system such that gas flows from said outlet of said compressor, through said second tower and to said outlet of said system to remove moisture from said gas, said communication means further being capable of connecting said second tower to said compression stage and to said heat exchanger such that heated gas flows from said compression stage through said second tower and into said heat exchanger to regenerate said desiccant material to said second tower, and further being capable of connecting said first tower to said outlet of said compressor and to an outlet of said system such that gas flows from said outlet of said compressor, through said first tower and to said outlet of said system to remove moisture from said gas, wherein said communication means is used to connect said first tower to said compression stage and to said heat exchanger when said communication means is used to connect said second tower to said outlet of said compressor and to said outlet of said system, and wherein said communication means is used to connect said second tower to said compression stage and to said heat exchanger when said communication means is used to connect said first tower to said outlet of said compressor and to said outlet of said system.