Experimental study of a simulated counter-current adsorption system—VII. Effects of non-linear and interacting isotherms

✍ Scribed by C.B. Ching; K.H. Chu; K. Hidajat; D.M. Ruthven

• Publisher: Elsevier Science
• Year: 1993
• Tongue: English
• Weight: 812 KB
• Volume: 48
• Category: Article
• ISSN: 0009-2509
• DOI: 10.1016/0009-2509(93)81014-m

✦ Synopsis

Continuous operation of a simulated counter-current adsorption process for separating a binary mixture with non-linear, interacting esuilibrium relationshins has been demonstrated exuerimentallv. Emphasis is placed on the derivationif c&rating conditions foi attaining high product purity and recove& when the isotherm is non-linear. With properly chosen flow conditions efficient separation is possible but the extract and miXnate products are generally recovered at concentrafions lower than the feed: It is shown that this limitation can be avoided, and for our model system the extract product can be. produced in high concentration and in relatively pure form by taking advantage of the eikt of isotherm interaction. The suggested mode of operation may be applied, in principle, to increase the concentration of the extract product in any separation in which the adsorption equilibrium for the. extract product component increases with increasing concentration of the raftinate product component. The practical feasibility of this-mode of operation depends on the extent of the isotherm interaction.