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Showing 1 to 20 of 23 for “"Distillation process"”.
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Pore Wetting in Desalination of Brine Using Membrane Distillation Process
… very high osmotic pressure to overcome. Membrane distillation (MD) is one of the emerging methods, which has attracted much attention for desalinating highly saline brines. MD is a thermally driven process in which only vapor molecules pass through the pores of a microporous hydrophobic membrane. …
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Modelling and optimisation of batch distillation involving esterification and hydrolysis reaction systems. Modelling and optimisation of conventional and unconventional batch distillation process: Application to esterification of methanol and ethanol using acetic acid and hydrolysis of methyl lactate system.
Batch distillation with chemical reaction when takes place in the same unit is referred to as batch reactive distillation process. The combination reduces the capital and operating costs considerably. Among many different types of batch reactive distillation column configurations, (a) conventional …
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Selective catalytic hydrogenation for industrial 1-hexene purification
… Fischer-Tropsch synthesis. A complex extractive distillation process is used to separate impurities from the product stream. A final polishing step by adsorption results in a significant loss of valuable alpha-olefin.
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Simultaneous chemical reaction and distillation of formaldehyde
… and testing of a mathematical model of a distillation process in which the components react chemically. The formaldehyde-methanol-water system was selected and only the reversible reactions between formaldehyde and water giving methylene glycol and between formaldehyde and methanol …
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Effect of operating parameter on membrane distillation performance using kapok fibre for humic acid treatment
… water scarcity and its high demand. Membrane distillation have been shown to be an effective alternative to replace conventional technologies which found uneconomical. As agricultural waste is abundantly available, kapok fibre has been chosen an alternative solution for synthetic membranes …
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The design and construction of a five inch centrifugal molecular still
Molecular distillation is that process of free transfer of molecules under high vacuum from an evaporator to a condenser, where the distance of travel is within the limits of the mean free path of the vapor molecules in the residual gas. Under these conditions, distillations can be made at …
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Nanophotonics-enabled Solar Membrane Distillation for Off-grid Water Purification
… approaches are equally critical. Membrane distillation (MD) has shown potential due to its low operating temperature and pressure requirements, but the requirement of heating the input water makes it energy intensive. Here we demonstrate nanophotonics-enabled solar membrane distillation …
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The application of separation indices to multistage systems
… extent of purification to multistage separation processes have been studied in detail. Neither index is suitable for stage-to-stage calculations in such processes. This is due to the fact that, at any stage, both indices depend only on the outlet stream compositions. It is not possible to …
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Heat and mass transfer models of the University of Tennessee at Chattanooga distillation column
The distillation column in the University of Tennessee at Chattanooga is a Pyrex glass unit with 12 separation stages, overhead receiver and a reboiler as shown on figure 8. In this thesis, mathematical models that relate to heat and mass transfer during a binary distillation of methanol-water …
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Mass Transfer Studies In A 'Finpak' Distillation Column
… a new form of rectification device under vacuum distillation conditions.<br/><br/>The operating conditions were so varied as to not only provide a measure of 'Finpak' column efficiency under a variety of such conditions, but also to illustrate the effect such variables have on the overall …
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Desalination for Sustainable Water Production with an Emphasis on Low Pressure Distillation
… methods of desalination include filtration and distillation. This paper explores the potential energy savings of vacuum distillation for seawater desalination to reduce the amount of energy needed to achieve phase change.</p> <p>Depending on the vacuum boiler design, the vaporization mechanism …
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Sustainable P2 design for batch-based specialty chemical manufacture
… recovery and substitution strategies. A two-step distillation process proved effective in recovering 95% of the NMP at a purity of 99.97% from the aqueous solvent waste stream. Yearly operating costs were reduced by 83% and total life cycle emissions were reduced by 44%, due to reduction in virgin …
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A Novel Physical Layer Key Generation and Authenticated Encryption Protocol Exploiting Shared Randomness
… scheme is superior to direct information distillation approaches and can substantially increase the key generation rates even at low and medium SNRs. Furthermore, the employment of this low-overhead feedback at the information distillation process can largely simplify the information …
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Investigation of Membrane Fouling and Cleaning in Direct Contact Membrane Distillation of Municipal Wastewater
… and endocrine disruptors. Current treatment processes, such as reverse osmosis, are used to remove many of these compounds, but is expensive and energy intensive. The rise of interest in potable water reuse may cause consumers to be concerned about trace constituents present in their water …
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Investigation of combustion enhancement with biomass derived fuels blended with diesel
… product in the bio-butanol production process is a mixture of acetone-butanol-ethanol (ABE). Due to the fact that engines do not require pure mixtures to combust, there is a potential to reduce production costs by using the ABE and diesel directly without the need for the distillation …
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Scale prevention in sea water evaporators. Part III. Decarbonation, filtration, and acidification
… the production of fresh water from salt water by distillation. The distillation of sea water to produce fresh enter has been widely used in maritime circles throughout the world, but in spite of its wide adoption there are still matters existing that have not been settled. The most troublesome of …
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Optimal retrofit and process design of distillation plants for energy saving and process intensification
… of a preflash device (drum or column) on a crude distillation unit. The limitations of both apparatuses are considered together with the energy saving realized. Particular emphasis is given to the evaluation of the best structure that matches the scope in the energy plant reduction and the respect …
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MSF process modelling, simulation and optimisation : impact of non-condensable gases and fouling factor on design and operation. Optimal design and operation of MSF desalination process with non-condensable gases and calcium carbonate fouling, flexible design operation and scheduling under variable demand and seawater temperature using gPROMS.
… number of countries around the world. Thermal process being the oldest and most dominating for large scale production of freshwater in today¿s world. Multi-Stage Flash (MSF) distillation process has been used for many years and is now the largest sector in the desalination industry. In this …
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Development of an Experimental Setup to Measure the Radiopurity of Argon from Urania and Aria
… meet DS-20k's UAr requirements. The procurement process begins at the Urania plant, currently under construction in Cortez, Colorado, USA. After extraction, the UAr will be shipped to Sardinia, Italy, for purification at the ARIA distillation column located in the Carbosulcis mines. The ARIA …
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