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Showing 1 to 16 of 16 for “"Vapour-liquid equilibrium"”.
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Vapour-liquid equilibrium studies at atmospheric to moderate pressures
A study of vapour-liquid equilibria is presented together with current developments. The theory of vapour-liquid equilibria is discussed. Both experimental and prediction methods for obtaining vapour-liquid equilibria data are critically reviewed. The development of a new family of equilibrium …
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Phase equilibrium studies at moderate pressures
The theory of vapour-liquid equilibria is reviewed, as is the present status or prediction methods in this field. After discussion of the experimental methods available, development of a recirculating equilibrium still based on a previously successful design (the modified Raal, Code and Best still …
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Modeling Fischer Tropsch synthesis in two-phase, continuous, well-mixed slurry reactors
… the conversion of syngas (CO and H2) to cleaner liquid transportation fuels. The modelling of such a supercritical, highly non-ideal, multi-component system requires the detailed knowledge of the reaction mechanism, reaction kinetics, phase-equilibrium and reactor technology. The objectives of …
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Batch separation of tetrafluoroethylene, hexafluoropropylene and octafluorocyclobutane
… and octafluorocyclobutane. As no vapour-liquid equilibrium data are available for these chemicals in this mixture, new vapour-liquid equilibrium data were experimentally generated and modelled for use in the design of the batch distillation column. The data were fitted to the …
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Preparative Scale Separation of Organic Mixtures by Semi-Continuous Gas-Liquid Chromatography
… chromatographic theory, the use of G.L.C. (gas-liquid chromatography) for the prediction of thermodynamic data, and the scale-up of the chromatographic process for preparative and production level separations. The application of G.L.C. for the separation of fatty acids is also reviewed and its …
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Vapour-Liquid equilibria at Low Concentration of One Component
… a total pressure apparatus to acquire isothermal vapour-liquid equilibrium data for binary mixtures. The method has been demonstrated to be capable of producing up to 30 data points from one experimental run and provide data at very low concentrations of one component (< 10-4mole fraction). A …
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Acid gas removal from natural gas using ionic liquids
… environmental impact through the use of ionic liquids (ILs) and their blend with other physical solvents as an alternative to amines.;The consequences of replacing an amine with ILs or a blend of ILs with other physical solvent in an existing amine unit are examined and found to be promising. A …
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Studies in Vapour-Liquid Equilibria
… work, involving both the determination of vapour-liquid equilibrium data for acetic acid systems, and theoretical work, including the development of data reduction programs, has been carried out. The practical work involved modification of the feed and pressure systems of a modified Cathala …
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Simultaneous chemical reaction and distillation of formaldehyde
… has been treated as a five component system. The vapour-liquid equilibrium calculations were performed by solving iteratively the thermodynamic relationships expressing the phase equilibria with the stoichiometric equations expressing the chemical equilibria. Using optimisation techniques, the …
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Investigation into the start-up and operation of upflow anaerobic sludge bed reactors
… found that the dissolution of CO2 to satisfy the vapour-liquid equilibrium between the headspace CO2 partial pressure and dissolved carbonic acid concentration was predominantly responsible for the decrease in pH across the reactors. It is on the basis of these findings that both hypotheses were …
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Phase equilibrium studies at normal pressures
… pressure apparatus has been developed to measure vapour-liquid equilibrium data on binary mixtures at atmospheric and sub-atmospheric pressures. The method gives isothermal data which can be obtained rapidly. Only measurements of total pressure are made as a direct function of composition of …
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On Uncertainty Quantification for Systems of Computer Models
… in April 14-16, 2010; and calibration of a vapour-liquid equilibrium model, a submodel of the Aspen Plus \textcopyright~chemical process software for design and deployment of amine-based $\mathrm{CO_2}$ capture systems.</p>
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Exploring Sulfur Recovery in a Eutectic Mixture of Biphenyl and Diphenyl Ether
A proof-of-concept liquid phase sulfur recovery process was explored in a eutectic solvent of biphenyl and diphenyl ether. Sulfur conversions up to 99.96% could be achieved within the solvent over commercial alumina and titania catalyst for a simulated tail-gas feed containing up to 5% sulfur …
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Enhanced bioethanol fermentation from mixed xylose and glucose using free and immobilized cultures: mathematical model and experimental observation
… plays a significant role in the world of liquid biofuel. However, majority of bioethanol is produced from edible food crops such as corn and sugarcane that causes an increase in demand for vacant lands for food production and, subsequently, increase in the cost of food manufacturing. …
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Vapour-Liquid Equilibria within Nanoporous Media
This thesis is dedicated to the exploration of fluid phases confined in nanoporous materials using Nuclear Magnetic Resonance (NMR) techniques, with an aim to benefit catalysis research. Included in this report are studies of pure fluids and their mixtures, confined in titania and silica catalyst …