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US 4,182,633 AGranted
Process of the operation of a simulated moving bed
AssigneeMitsubishi Chemical Industries Limited
InventorsHachiro Ishikawa, Hidekatu Tanabe, Keizo Usui
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AssigneeMitsubishi Chemical Industries Limited
InventorsHachiro Ishikawa, Hidekatu Tanabe, Keizo Usui
Estimating the term…
A process of the operation of simulated moving bed is disclosed in which said bed is packed with a solid sorbent and provided with a plurality of pipes acting as a feed stock inlet, a desorbent inlet, a sorbed component outlet and a non-sorbed component outlet and the upstream end and the downstream end of the bed are interconnected to form a loop path, and a fluid containing the sorbed component and the non-sorbed component, and a desorbent are supplied to the bed and the sorbed component and the non-sorbed component separated are recovered. An improvement comprises the flow rate of the fluid is controlled on the basis of the concentration distribution of the sorbed and the non-sorbed components whereby the separated components are recovered in high purity and in constant composition.
In the operation of a simulated moving bed comprising flowing a fluid containing a sorbed component and a non-sorbed component in one direction along a bed packed with a solid sorbent and having the upstream end and the downstream end interconnected to form a circulation loop, introducing a feed stock and a desorbent to the circulating fluid and withdrawing the sorbed component and the non-sorbed component therefrom at selected positions of the bed and shifting downstream the positions of the feed stock inlet, the non-sorbed component outlet, the desorbent inlet and the sorbed component outlet at a predetermined time interval, the improvement in which the concentration of at least one component in the fluid flowing through the bed is measured as at least one point in the path of fluid to predict a concentration distribution of the selected component and the flow rate of the fluid is controlled to maintain the predicted concentration distribution in the desired wave pattern of concentration distribution.
In the operation of a simulated moving bed comprising flowing a fluid containing a sorbed component and a non-sorbed component in one direction along a bed packed with a solid sorbent and having the upstream end and the downstream end interconnected to form a circulation loop, introducing a feed stock and a desorbent to the circulating fluid and withdrawing the sorbed component and the non-sorbed component therefrom at selected positions of the bed and shifting downstream the positions of the feed stock inlet, the non-sorbed component outlet, the desorbent inlet and the sorbed component outlet at a predetermined time interval, the improvement in which the concentration of at least one component in the fluid flowing through the bed is measured at at least one point in the path of fluid to predict a concentration distribution of the selected component and the flow rate of the fluid is controlled to maintain the predicted concentration distribution in the desired wave pattern of concentration distribution, and the positions of the feed stock inlet, the non-sorbed component outlet, the desorbent inlet and the sorbed component outlet and the time interval of shifting are determined on the basis of the predicted concentration distribution.
Dependencies are inferred from the claim text.