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A novel technique for rapid measurement of liquid–liquid–vapour equilibrium

✍ Scribed by L Sever; J Lieto; A Boudehen; J Bousquet

Publisher
Elsevier Science
Year
1998
Tongue
English
Weight
278 KB
Volume
53
Category
Article
ISSN
0009-2509

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✦ Synopsis

A technique for obtaining liquid-liquid-vapour equilibria data in a single apparatus is described. The cell, equipped with two facing optical glass windows and a turbidimeter, is stirred at two regimes. At high agitation speed, the hollow shaft induces the vapour-phase recirculation in the liquid and allows very quick liquid vapour equilibria measurements, with a saw tooth temperature profile at each composition. At moderate agitation speeds, the liquid cloud point is detected by turbidimetry. The technique leads, in a matter of few days, to a complete set of data in a large P and ¹ domain. As an example, an application to the MIBK-water binary system is presented.

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