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An adsorption apparatus has a housing including an inlet and an outlet, and defining an inlet plenum extending vertically below the inlet and an outlet plenum extending vertically below the outlet. A plurality of adsorption bed assemblies in a vertically stacked configuration are retained in the hou

An adsorption apparatus has a housing including an inlet and an outlet, and defining an inlet plenum extending vertically below the inlet and an outlet plenum extending vertically below the outlet. A plurality of adsorption bed assemblies in a vertically stacked configuration are retained in the housing in fluid communication with the inlet plenum. Each of the adsorption bed assemblies has a bottom opening and a top opening and layers of adsorption material with the assembly oriented in a V-type configuration. A plurality of baffles angle upward from the inlet plenum to the outlet plenum, including a baffle disposed between each pair of adjacent stacked adsorption bed assemblies, to direct flow up toward the bottom opening of the adsorption bed assembly immediately above the baffle and to direct flow passing from the top opening of the adsorption bed assembly immediately below the baffle.

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[ What is claimed is:] [1.] An adsorption apparatus, comprising:a housing including an inlet and an outlet, and defining an inlet plenum extending vertically;a plurality of adsorption bed assemblies in a vertically stacked configuration and in fluid communication with the inlet plenum;an access door

[ What is claimed is:] [1.] An adsorption apparatus, comprising:a housing including an inlet and an outlet, and defining an inlet plenum extending vertically;a plurality of adsorption bed assemblies in a vertically stacked configuration and in fluid communication with the inlet plenum;an access door proximate the inlet plenum for inserting and removing the plurality of adsorption bed assemblies through the inlet plenum; anda seal member between each of the plurality of adsorption bed assemblies and the housing.