System and process for recovering products using simulated-moving-bed adsorption
AssigneeUop LLC
InventorsStanley J. Frey, Jason T. Corradi, Sara A. Williams
Life of this patent
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Abstract
A process according to various approaches includes flushing an intermediate transfer line between the extract stream transfer line and the desorbent stream transfer line away from the adsorptive separation chamber to remove residual fluid from the intermediate transfer line. The process may include directing the residual fluid flushed from the intermediate transfer line to a downstream separation apparatus to separate components of the residual fluid.
Claims19
A process for separating components in a feed stream by simulated countercurrent adsorptive separation comprising:
- introducing a feed stream, comprising at least one preferentially adsorbed component and at least one non-preferentially adsorbed component, and a desorbent stream into two different ports via two different corresponding transfer lines along a multi-bed adsorptive separation chamber having a plurality of beds that are serially connected in fluid communication and comprising a predetermined number of spaced ports with corresponding transfer lines in fluid communication therewith for introducing and removing fluid into and from the adsorptive separation chamber and withdrawing an extract stream and raffinate stream through two different ports of the multi-bed adsorptive separation chamber via two different corresponding transfer lines;
- flushing an intermediate transfer line between the extract stream transfer line and the desorbent stream transfer line away from the adsorptive separation chamber to remove residual fluid from the intermediate transfer line;
- and
- directing the residual fluid flushed from the intermediate transfer line to a downstream separation apparatus to separate components of the residual fluid.
A process for the separation of components in a feed stream comprising at least one preferentially adsorbed component and at least one non-preferentially adsorbed component by simulated countercurrent adsorptive separation comprising:
- introducing a feed stream into a port of a multi-bed adsorptive separation chamber comprising a plurality of ports with corresponding transfer lines via one transfer line in fluid communication with the port;
- withdrawing an extract stream from the adsorptive separation chamber through the one transfer line, wherein the extract stream has a higher concentration of the preferentially adsorbed component than the feed stream and a lower concentration of the non-preferentially adsorbed component than the feed stream and wherein a portion of the extract stream remains in the transfer line as residual extract fluid;
- flushing the residual extract fluid in the transfer line away from the adsorptive separation chamber with flushing fluid;
- directing the residual extract fluid to a downstream separation apparatus for separating the preferentially adsorbed component therefrom;
- and
- introducing a desorbent stream, along with the residual flushing fluid, into the adsorptive separation chamber through the transfer line.
Dependencies are inferred from the claim text.