Two-phase filtration of multicomponent mixtures with a retrograde region of the phase diagram

In this article, the normal continuous mode of distillation is considered using an example of binary two-phase mixture distillation. In practice, there are often deviations from the normal mode. It has been proved that the deviation leads to an increase in energy consumption for the ongoing process. In the industry, columns separating binary mixtures are normally the finishing apparatuses in the flow-sheet separation of multicomponent mixtures, which are obtained in the reactor as a result of main reactions as well as by-reactions. The distillation of binary mixtures is relatively simpler than that of multicomponent mixtures. In this regard, the fundamental parts of monographs especially in the thirties-forties of the last century started with the study of binary mixtures, although multicomponent mixtures were the main focus. The aim of analyzing this complex and the highly energy-intensive process is to facilitate the choice of a mathematical model for the process and the determination on its basis variance. Variance is a set of independent variables that allow calculation of a process only after taking into account the number of independent equations related to these variables. A case of deviation from the normal distillation regime where an under-heated liquid enters the column feed has been revised. This leads to an increase in energy consumption during distillation. Key indicators of the normal regime relative to the level of feed and the temperature of the liquid are shown in the text.

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Aqueous Two-Phase Systems: simple one-step process formulation and phase diagram for characterisation

Colloid & Polymer Science ◽

10.1007/s00396-020-04748-8 ◽

2020 ◽

Vol 298 (12) ◽

pp. 1629-1636

Author(s):

Florence Dumas ◽

Emilie Roger ◽

Johanna Rodriguez ◽

Lazhar Benyahia ◽

Jean-Pierre Benoit

Keyword(s):

Phase Diagram ◽

Two Phase ◽

Step Process ◽

Aqueous Two Phase Systems ◽

One Step ◽

Phase Systems

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Rheological and structural studies on heat-induced gelation of concentrated skim milk

Journal of Dairy Research ◽

10.1017/s002202990003096x ◽

1995 ◽

Vol 62 (2) ◽

pp. 257-267 ◽

Cited By ~ 2

Author(s):

Atsumi Tobitani ◽

Haruyoshi Yamamoto ◽

Toshiaki Shioya ◽

Simon B. Ross-Murphy

Keyword(s):

Phase Diagram ◽

Laser Light ◽

Skim Milk ◽

Phase Region ◽

Polymer Physics ◽

Phase Behaviour ◽

Two Phase ◽

Effects Of Ph ◽

Higher Temperature ◽

Temperature Side

SUMMARYHeat-induced gelation of milk was studied using both rheological and structural techniques. The sample was a conventional skim milk, concentrated with an ultrafiltration membrane, which formed gels when heated at appropriate pH. We investigated some factors that are considered to affect the gelation, such as concentration, pH and rennet treatment. The gelation process was monitored with a high precision oscillatory shear rheometer and the structure of gels was evaluated with quasi-elastic laser light scattering. From these results the gelation and phase separation behaviour were determined. By combining the results for different concentrations a phase diagram was obtained, which indicated that skim milk had a two-phase region on the higher temperature side. The effects of pH and rennet treatment were also evaluated with the aid of this phase diagram. The results were discussed on the basis of concepts of the phase behaviour of polymers, which were successfully developed in polymer physics.

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Effect of Mechanical Stresses on Metastability of Heterophase Superparamagnetic Nanoparticles

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.602-604.201 ◽

2012 ◽

Vol 602-604 ◽

pp. 201-204

Author(s):

Afremov Leonid ◽

Ilia Ilyushin

Keyword(s):

Phase Diagram ◽

Mechanical Stresses ◽

Superparamagnetic Nanoparticles ◽

Magnetic Reversal ◽

Two Phase ◽

Magnetic States

Under the model of two-phase multiaxial nanoparticles the dependence of magnetic states and critical elds of the phases magnetic reversal on mechanical stresses has been de ned. By means of phase diagram the e ect of stresses on the basic and metastable magnetic states of heterophase particles has been studied.

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The two-phase model for calculating thermodynamic properties of liquids from molecular dynamics: Validation for the phase diagram of Lennard-Jones fluids

The Journal of Chemical Physics ◽

10.1063/1.1624057 ◽

2003 ◽

Vol 119 (22) ◽

pp. 11792-11805 ◽

Cited By ~ 244

Author(s):

Shiang-Tai Lin ◽

Mario Blanco ◽

William A. Goddard

Keyword(s):

Molecular Dynamics ◽

Phase Diagram ◽

Thermodynamic Properties ◽

Phase Model ◽

Two Phase ◽

Lennard Jones

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Calculation and Plot of Predominance Area Phase Diagram for Cu-S-O Ternary System

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.503-504.390 ◽

2012 ◽

Vol 503-504 ◽

pp. 390-395

Author(s):

Shang Yong Li ◽

Yuan Hu ◽

Gang Xie ◽

Jun Han Li

Keyword(s):

Phase Diagram ◽

Phase Equilibrium ◽

Physical Properties ◽

Chemical Reactions ◽

Phase Point ◽

Two Phase ◽

Clear Physical Meaning ◽

Three Phase ◽

Calculated Model ◽

Phase Equilibrium Line

The typical chemical reactions of metal were analyzed in this paper, and the two-phase equilibrium line calculated model was obtained. By use of the physical properties database, the design of chemical reactions and the compounds were to be determined. Through the calculating the two-phase point and three-phase point ,the predominance area phase diagram algorithm based on the physical properties database was formed, which has clear physical meaning and accuracy calculation result, and also whose result was consistent with that of the literature.

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