Adsorber and process for the separation by adsorption
AssigneeL'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
InventorsLeon Hay, Xavier Vigor
Life of this patent
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Abstract
An adsorber having an upright longitudinal extent includes two perforated parallel panels extending within the vessel formed therein and spaced apart defining an adsorbent mass chamber. The adsorbent mass is in two longitudinal parts having a first part of fine particles and a second part of larger particles. The gas to be treated is circulated horizontally between the two perforated panels. This device allows the treatment cycle to be less than 60 seconds with the same or better performance. This adsorber and process are preferably used for the separation of oxygen from air.
Claims23
A process for the separation of at least one component from a gas mixture by adsorption, where the gas is circulated through an adsorbent mass in an adsorber which can be subjected to cyclical pressure variations, including the steps of circulating the gaseous mixture in a first direction in the adsorbent mass, wherein the mass has its longest dimension orthogonal to the first direction and longer than the average dimension of the adsorbent mass in the direction of circulation of the gas, the adsorbent mass including, at least in a downstream portion relative to the flow of gas, during its production phase, particles which have a granulometry smaller than 1.7 mm, and whereby the duration of the cycle is between 20 and 60 seconds while the pressure loss between the inlet and the outlet of the adsorbent mass during the passage of the gaseous mixture to be treated is less than 200 mb.
A process for filling an adsorber vessel having a cylindrical form and a longitudinal axis and wherein filling pipes are provided for passing through a portion of the vessel wall and communicating with an adsorbent mass chamber within the vessel such that the vessel is laid with its longitudinal axis in the horizontal direction and the filling pipes extending upwardly so that the adsorbent material or particles can be filled into the adsorbent mass chamber through the filling pipes, and when the adsorbent chamber is completely filled, the vessel is raised to such that its longitudinal axis is in the vertical.
An adsorber for separating a gaseous mixture comprising a closed vessel containing an adsorbent mass of adsorbent particles, wherein the vessel has its longest dimension in the longitudinal axis and includes two spaced-apart, parallel, perforated panels extending longitudinally and defining therebetween and with parts of the vessel wall, a chamber containing the adsorbent particles of the adsorbent mass, one of the panels defining with the adjacent portion of the vessel wall, an inlet collection chamber, an inlet pipe passing through the vessel wall and communicating with the inlet collection chamber for receiving admission of the gaseous mixture while the other perforated panel defines with an adjacent vessel wall an outlet collection chamber, an outlet pipe extending through the vessel wall communicating with the outlet collection chamber to allow the evacuation of the gaseous mixture, such that a flow of the gaseous mixture can pass from the inlet collection chamber to the outlet collection chamber through the adsorbent mass between the perforated panels, at least a portion of the adsorbent particles contained in the chamber between the perforated panels having a granulometry of less than 1.7 mm.
A pressure swing adsorber device for separating a gaseous mixture, comprising a closed vessel having a vessel wall and containing an adsorbent mass, wherein the vessel has its longest dimension along a vertical axis and includes two spaced-apart parallel, perforated panels extending vertically and defining therebetween and with parts of the vessel walls an inner volume filled with the adsorbent mass, one of said panels defining with an adjacent portion of the vessel wall a lateral inlet connection chamber, an inlet pipe passing through the vessel wall and communicating with the inlet connection chamber, the other perforated panel defining with an adjacent portion of the vessel wall a lateral outlet connection chamber, an outlet pipe extending through the vessel wall and communicating with the outlet connection chamber, whereby a flow of the gaseous mixture can pass from the inlet pipe to the outlet pipe substantially horizontally through the adsorbent mass enclosed between the perforated panels.
Dependencies are inferred from the claim text.