FILTER FOR GAS CLEANING Russian patent published in 2003 - IPC

FIELD: purification of atmospheric air utilized as carrier gas in portable gas chromatographs. SUBSTANCE: filter for gas cleaning presents case with gas inlet in which tube having inlet and outlet holes and filled with adsorbent is placed coaxially and with clearance. Tube houses heater and gas purity sensor is positioned across its inlet. Radial clearance between tube and wall of case is filled with adsorbent. Temperature of regeneration of adsorbent in tube and in radial clearance diminishes from center of case to its periphery. Humidity sensor can be employed in the capacity of gas purity sensor. EFFECT: increased degree and stability of cleaning of carrier gas, simplified operation of filter, reduced energy consumption. 2 cl, 1 dwg