Group contribution methods, such as UNIFAC or ASOG can be successfully applied to the prediction of the real behavior of non electrolyte mixtures. Therefore these methods are used worldwide in the different process simulators for the synthesis and design of separation processes. Since the well known group contribution methods still show some weaknesses a modified version of the UNIFAC method ha...

Hydrogen (H2) has emerged as a viable solution for energy storage of renewable sources, supplying off-seasonal demand. contamination due to undesired mixing with other fluids during operations is significant problem. Water regular occurrence; therefore, an accurate prediction H2-water thermodynamics crucial the design efficient and water removal processes. In thermodynamic modeling, Peng–Robins...

Further to Part I of our study glycol ether binary mixtures [Dimitrov, O.; Ind. Eng. Chem. Res. 2021, 60, 9602−9612], this second part is concentrated around the vapor–liquid equilibrium (VLE) modeling involving three ethers previously studied experimentally. The authors propose use NRTL-PR model for representation these nonideal mixtures. main difficulties related very low vapor pressures and ...

Vapor-liquid equilibrium in NH3-CO2-H2O system at high pressures has been studied. The UNIQUAC-NRF model for this system was extended by using the Goppert 4 maurer reported datas. Since the system contains molecules and ionic species the binary interaction parameters considered, where those are of molecule-molecule, molecule-ion and ion-ion types. These interaction parameters are taken as c...

Carbon dioxide capture transportation and storage is one of the technologies that can be employed to reduce CO2 emissions from power plants. Unfortunately, in post combustion process, not pure contains impurities like SO2, NOx, N2, O2 Ar for example. In this paper, Vapour-Liquid-Equilibrium (VLE) a binary system composed N2O4/NO2 have been investigated. The equipment used based on “static-synth...

The separation of benzene and cyclohexane azeotrope is one the most challenging processes in petrochemical industry. In this paper, deep eutectic solvents (DES) were used as for cyclohexane. DES1 (1:2 mix tetrabutylammonium bromide (TBAB) levulinic acid (LA)), DES2 TBAB ethylene glycol (EG)) DES3 ChCl (choline chloride) LA) entrainers, vapor-liquid equilibrium (VLE) measurements at atmospheric ...

We have formulated a general approach for transforming an analytical equation of state ~EOS! into the crossover form and developed a generalized cubic ~GC! EOS for pure fluids, which incorporates nonanalytic scaling laws in the critical region and in the limit r→0 is transformed into the ideal gas equation EOS. Using the GC EOS as a reference equation, we have developed a generalized version of...

The paper at first, analyzes three equations of state--MH equation, RKS equation, SHBWR equation for their adaptation in liquid state. The equations are solved with special mixing regulation on the condition of vapor-liquid equilibrium (VLE) for NARMs and then the paper evaluates thermodynamic properties of this mixture for four conditions by method of the complementary funcation. This paper co...