UOP Cyclesorb process

A schematic diagram of a six-vessel UOP Cyclesorb process is shown in Figure 15. The UOP Cyclesorb process has four external streams feed and desorbent enter the process, and extract and raffinate leave the process. In addition, the process has four internal recycles dilute raffinate, impure raffinate, impure extract, and dilute extract. Feed and desorbent are fed to the top of each column, and the extract and raffinate are withdrawn from the bottom of each column in a predeterrnined sequence estabUshed by a switching device, the UOP rotary valve. The flow of the internal recycle streams is from the bottom of a column to the top of the same column in the case of dilute extract and impure raffinate and to the top of the next column in the case of dilute raffinate and impure extract. 

FIG. 16-50 UOP Cyclesorb process. (Reprinted with permission of John Wiley Sons, Inc. Reference Gembicki, Oroskar, and Johnson, Adsorption, Liquid Separationin Kirk-Othmer Encyclopedia of Chemical Technology, 4th ed., Wiley, New York, 1991. )... 

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