METHOD FOR PREVENTING COMPACTION IN SORBENT BEDS

摘要

The direction of circulating fluid flow in a closed loop simulated moving bed process is periodically reversed within a selected portion of the bed while maintaining normal flow throughout the remainder of the loop. Each selected portion is contained within a discrete vessel, and at preselected times, flow is reversed in each vessel in turn so that during a complete cycle of the process the entire bed is backwashed for an interval sufficient to avoid compaction.