Patent ID: 8313561
Filing Date: 2012-11-20
Classification: B01D,B01J,Y02C

Abstract:
1. A radial bed vessel comprising: a substantially cylindrical vessel shell having a vertical longitudinal axis, an upper cap and a lower cap; a substantially cylindrical porous outer basket disposed concentrically inside the shell along the longitudinal axis and attached to at least one of the upper cap and the bottom cap; a substantially cylindrical porous inner basket disposed concentrically inside the porous outer basket along the longitudinal axis and attached to at least one of the upper cap or the lower cap of the vessel; a substantially annular outer channel disposed between the vessel shell and outer basket along the longitudinal axis having a cross-sectional flow area capable of transporting either a feed fluid or a product fluid; a substantially cylindrical inner channel disposed inside the inner basket along the longitudinal axis having a cross-sectional flow area capable of transporting either a feed fluid or a product fluid; a substantially annular bed composed of at least one layer of active material disposed in the annular space between the inner and the outer baskets; wherein: the ratio of the cross-sectional flow area of the channel transporting the feed fluid to the cross-sectional flow area of the channel transporting the product fluid is in proportion to the ratio of the mass flow rate of the feed fluid to the mass flow rate of the product fluid with the proportionality constant greater than or equal to 0.7 and less than or equal to 1.4; and the annular bed has a bed height and a bed transfer length sized such that the pressure change over the lengths of the inner and the outer channels are each less than or equal to 10% of the pressure drop across the bed under the process operating conditions for the fluid employed.