Patent ID: 6471750
Filing Date: 2002-10-29
Classification: B01D,F17C

Abstract:
A gas containment assembly, comprising:a containment enclosure defining an enclosed interior volume, and including an exhaust inlet and an exhaust outlet for flow of exhaust gas into the enclosed interior volume through the exhaust inlet and flow through the interior volume for discharge from the containment enclosure through the exhaust outlet; a gas supply vessel and/or gas flow circuitry in the interior volume of the containment enclosure; a back-migration scrubber unit overlying and sealed to the exhaust inlet to permit flow of exhaust gas therethrough into the exhaust inlet, said back-migration scrubber unit comprising a mass of sorbent material having sorptive affinity for gas in said gas supply vessel and/or gas flow circuitry in the interior volume of the containment enclosure, whereby back-flow migration of gas from said gas supply vessel and/or gas flow circuitry in the interior volume of the containment enclosure is sorptively taken up by the mass of sorbent material and prevented from passing into an ambient environment in which said gas containment assembly is deployed.