Patent ID: 6346142
Filing Date: 2002-02-12
Classification: B01D,G01N

Abstract:
A device for removing water from a sample gas stream, comprising:a plurality of drying tubes coupled together in series, each one of said plurality of drying tubes further having a first flow path for sample gas and a second flow path for purge gas, said sample gas stream passing through said first flow path of each one of said plurality of drying tubes in series; a cooling chamber having an interior volume maintained at a reduced temperature relative to an ambient temperature of said sample gas stream, at least one of said plurality of drying tubes being disposed in said cooling chamber; and a purge air source providing a supply of dried air, said purge air source being coupled to said plurality of drying tubes such that dried air passes through said second flow path of each one of said plurality of drying tubes in series; wherein, said cooling chamber reduces temperature of said sample gas stream to an approximate dew point of the sample gas to increase drying efficiency of said plurality of drying tubes.