Fibrous Bed Coalescence of Water. Steps in the Coalescence Process

Hazlett, Robert N.

doi:10.1021/i160032a005

Cited by 92 publications

(78 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…1 Coalescence continues until the enlarged water drops are 4 eventually swept out from the coalescer under the flow hydrodynamics and are subsequently allowed to separate under gravity. 2 A further measure to guard against the co-introduction of water with fuel involves the use of filter/monitors as a "last line of defense" immediately upstream of the aircraft tanks.…”

Section: Introductionmentioning

confidence: 99%

Component Interactions in Jet Fuels: Fuel System Icing Inhibitor Additive

Taylor

2008

Energy Fuels

View full text Add to dashboard Cite

In view of its widespread application in aviation turbine fuel, diethyleneglycol monomethylether (DiEGME), and its interactions with water and n-heptane have been characterized using turbidity, interfacial tension, water activity and water absorption measurements. This additive has been implicated in a number of problems in recent years, which have arguably arisen from its various physico-chemical interactions with fuel and fuel system components, for which few data were hitherto available. The present study has therefore addressed the more fundamental aspects underlying such interactions using n-heptane as the hydrocarbon. Turbidity results indicate an increased level of water solubilization owing 2 to the formation of DiEGME-water clusters (~1:8 ratio) as the DiEGME concentration exceeds its specification maximum value of 0.15% (w/v) in fuel. Interestingly, this same composition is found in separated water resulting from additive partitioning from fuel leading to ~50% DiEGME/water mixtures. The combined use of interfacial tension, water activity and absorption measurements, and solubility parameters is able to explain this tendency as being due to a reduction in water activity in the presence of DiEGME, this latter property being reduced significantly above 50% DiEGME, which therefore appears to be the most thermodynamically-stable composition. Water activity considerations also provide the basis for understanding the action of DiEGME as a thermodynamic icing inhibitor, consistent with the role that hydrogen bonding plays in reducing water activity, and in line with water activity-based ice nucleation theory (Koop, T.; Luo, B.; Tsias, A.; Peter, T. Nature 2000, 406, 611-614).Correspondingly, the thermodynamic activity of DiEGME, derived herein using a Gibbs-Duhem treatment of water activity data, is shown to be reduced considerably in the presence of low levels of water (< 0.1 mole fraction), which would be sufficient to restrict the fuel solubility of this material as observed in practice.

show abstract

Section: Introductionmentioning

confidence: 99%

Component Interactions in Jet Fuels: Fuel System Icing Inhibitor Additive

Taylor

2008

Energy Fuels

View full text Add to dashboard Cite

show abstract

“…Water-in-oil emulsion separations are important to the petroleum and chemical industries [1][2][3][4][5][6][7]. In many applications, dispersions of water drop sizes of less than 100 µm are very difficult to separate.…”

Section: Introductionmentioning

confidence: 99%

“…In many applications, dispersions of water drop sizes of less than 100 µm are very difficult to separate. Coalescence filtration can be economical and effective for separation of secondary dispersions [1][2][3][4][5]. There are three main steps of the coalescence process.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Filtration application from recycled expanded polystyrene

Shin

2006

Journal of Colloid and Interface Science

View full text Add to dashboard Cite

“…They found that the fiber contact surface area is more important than pore size. Hazlett [13] reported that the water droplets in water-in-oil emulsions must displace the oil film from the wet fiber for attachment to be effective. A water droplet easily displaces oil on hydrophilic surfaces.…”

Section: Introductionmentioning

confidence: 99%

The effect of wettability on drop attachment to glass rods

Shin

2004

Journal of Colloid and Interface Science

View full text Add to dashboard Cite

Fibrous Bed Coalescence of Water. Steps in the Coalescence Process

Cited by 92 publications

References 9 publications

Component Interactions in Jet Fuels: Fuel System Icing Inhibitor Additive

Component Interactions in Jet Fuels: Fuel System Icing Inhibitor Additive

Filtration application from recycled expanded polystyrene

The effect of wettability on drop attachment to glass rods

Contact Info

Product

Resources

About