Topological analysis of vapor–liquid equilibrium diagrams for distillation process design

2002 ◽  
Vol 4 (6) ◽  
pp. 896-908 ◽  
Author(s):  
Sergei Blagov ◽  
Hans Hasse
2021 ◽  
Author(s):  
Alexander Keller ◽  
Irenäus Wlokas ◽  
Maximilian Kohns ◽  
Hans Hasse

Titanium(IV) isopropoxide (TTIP) is an important precursor for the production of nanoparticles by spray flame processes. In these processes, the precursor is provided in a solution in a combustible solvent, which is p-xylene here. As no thermophysical data for solutions of TTIP in p-xylene were available in the literature, they were measured in the present work. The vapor–liquid equilibrium was measured at pressures ranging from 20 to 80 kPa. The specific density, viscosity, thermal conductivity, molar isobaric heat capacity, and self-diffusion coefficients were determined experimentally at 101.3 kPa at temperatures between 293.15 and 373.15 K. Sample compositions cover the range from pure TTIP to pure p-xylene. Chemical reactions in the studied system were considered. The experiments were carried out in such a way that they do not compromise the results for the thermophysical properties. The vapor–liquid equilibrium data were correlated using the NRTL model. Empirical correlations were established for the other properties. The results provide a rational basis for spray flame process design.


2015 ◽  
Vol 1113 ◽  
pp. 710-714
Author(s):  
Taha Mahdi ◽  
Arshad Ahmad ◽  
Adnan Ripin ◽  
Mohamed Mahmoud Nasef ◽  
Olagoke Oladokun

Earlier works have proved the potentials of altering the vapor liquid equilibrium of azeotropic mixture by sonication phenomena. In this work a mathematical model of a single stage vapor-liquid equilibrium system developed in Aspen Custom Modeler is exported to Aspen Plus to represent one stage of ultrasonic flash distillation (USF). The USF modules are connected serially to mimic a distillation process. As a case study, the separation of ethanol-ethyl acetate mixture is considered. The final targeted composition of 99 mole % of ethyl acetate was achieved when 27 USF modules were used despite the fact that the mixture form azeotrope at 55 mole % ethyl acetate. The results reinforced the anticipated potentials of sonication phenomena in intensifying distillation process to overcome azeotropes, and provide useful insights for the development of a pilot-scaled facility that is currently under development.


1984 ◽  
Vol 15 (21) ◽  
Author(s):  
R. G. RUBIO ◽  
J. ARACIL ◽  
M. DIAZ PENA ◽  
J. A. R. RENUNCIO

Author(s):  
César A. García ◽  
Jessica J. Velandia ◽  
Mario A. Céspedes ◽  
Gerardo Rodríguez ◽  
Iván D. Gil

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