Browsing
     by title


0-9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

or enter first few letters:   
OK
Peer Reviewed
See detailLiquid flow maldistribution in trickle-bed reactors
Crine, Michel ULg; Marchot, Pierre ULg; L'Homme, Guy ULg

in Chemical Engineering Communications (1980), 7

Detailed reference viewed: 30 (17 ULg)
Peer Reviewed
See detailLiquid hold-up measurement in Mellapak Plus 752Y packed bed using X-ray tomography
Aferka, Saïd ULg; Viva, Aurora ULg; Brunazzi, Elisabetta et al

in VCIPT (Ed.) Proceedings of 6th World Congress On Industrial Process Tomography (WCIPT6), Beijing, China, 6-9 Septembre 2010 (2010)

Detailed reference viewed: 109 (9 ULg)
Full Text
See detailLiquid ilmenite or liquidus ilmenite: a comment on the nature of ilmenite vein deposits
Duchesne, Jean-Clair ULg

in Demaiffe, Daniel (Ed.) Petrology and geochemistry of magmatic suites of rocks in the continental and oceanic crust (a volume dedicated to Professor Jean Michot) (1996)

The interstitial character of ilmenite in common gabbroidic rocks has led to the idea that the last drop of liquid to crytallize in a rock could be pure ilmenite. When injected into enclosing rocks this ... [more ▼]

The interstitial character of ilmenite in common gabbroidic rocks has led to the idea that the last drop of liquid to crytallize in a rock could be pure ilmenite. When injected into enclosing rocks this liquid could give rise to ilmenite-pure veins. Fractional crystallization or immiscibility cannot produce a pure ilmenite melt. Actually, ilmenite is a liquidus mineral, which is the first or among the first mafic minerals to crystallize in Fe-Ti rich magmas. This is clearly shown by the sequence of crystallization in the Bjerkreim-Sokndal layered intrusion, by quantitative modelling of the liquid line of descent of jotunitic (hypersthene monzodioritic) magmas, and by experimental work. The interstitial character of ilmenite is therefore acquired subsolidus. Deformation can enhance the process. The synemplacement deformation linked to the diapiric uprise of anorthosite massifs is a suitable environment for the formation of layers of Cr- and Mg-rich ilmenite and their subsequent deformation and mobilization in discordant veins of pure ilmenite. [less ▲]

Detailed reference viewed: 172 (3 ULg)
Full Text
Peer Reviewed
See detailLiquid load point determination in a reactive distillation packing by x-ray tomography
Aferka, Saïd ULg; Viva, Aurora ULg; Brunazzi, Elisabetta et al

in Canadian Journal of Chemical Engineering (2010), 88(4), 611-617

In this paper, we report on the use of Xray tomography to determine the liquid load point in 0.1m diameter modular catalytic distillation packings KatapakSP11 and KatapakSP12. The liquid load point ... [more ▼]

In this paper, we report on the use of Xray tomography to determine the liquid load point in 0.1m diameter modular catalytic distillation packings KatapakSP11 and KatapakSP12. The liquid load point corresponds to the overall packed bed liquid load above which there is an increment in the liquid flowing outside the catalytic baskets and the catalytic baskets themselves are saturated with liquid. From tomographic images, we show that several factors affect the wetting and filling of catalytic baskets. The complex hybrid structure of catalytic packings influences the liquid distribution inside the elements. The liquid preferentially fills the external catalytic baskets because they receive the liquid not only from the packing element situated above but also from the wall wipers. Moreover, liquid holdup inside a catalytic basket section depends significantly on the vertical position in the packing element and on the position of the packing in the column packed bed. The counter–current gas flow speeds up the process of liquid filling of the baskets, also for low liquid loads. The nonuniform distribution of liquid in catalytic basket which is observed experimentally makes the identification of a unique liquid load point not straightforward. [less ▲]

Detailed reference viewed: 79 (15 ULg)
Full Text
Peer Reviewed
See detailLiquid load point measurement in a reactive distillation packing by x-ray tomography
Aferka, Saïd ULg; Viva, Aurora ULg; Brunazzi, Elisabetta et al

Poster (2009, August)

Detailed reference viewed: 56 (11 ULg)
See detailLiquid oxygen compatibility of materials for space propulsion needs
Bozet, Jean-Luc ULg; Heyen, Georges ULg; Dodet, Claude ULg et al

in 4TH EUROPEAN CONFERENCE FOR AEROSPACE SCIENCES (EUCASS) (2011)

Since the origin, the use of liquid oxygen as oxidizer is widespread in space propulsion. It has been the source of numerous incidents. Many materials can burn violently in an oxygen enriched environment ... [more ▼]

Since the origin, the use of liquid oxygen as oxidizer is widespread in space propulsion. It has been the source of numerous incidents. Many materials can burn violently in an oxygen enriched environment when ignited. Consequently, it is mandatory to perform oxygen compatibility tests. In the present work, compatibility tests are impact tests and auto ignition tests. Both standardized test methods are illustrated by test results on polymeric materials (i.e. fluorinated resins, polyimides, polyetherketone) for seals and ball bearing cage. For future needs, in order to face the increase of pressure of injection of propellants in cryogenic engines, the adiabatic compression test has been identified as well suited for qualifying materials as oxygen compatible in highly constraining conditions. Details on the test procedure and on the installation available at the Université de Liège are presented. [less ▲]

Detailed reference viewed: 50 (1 ULg)
Full Text
Peer Reviewed
See detailLiquid-Assisted Plasma-Enhanced Chemical Vapor Deposition of Catechol and Quinone-Functionalized Coatings: Insights into the Surface Chemistry and Morphology
Mauchauffé, Rodolphe; Moreno-Couranjou, Maryline; Boscher, N. D. et al

in Plasma Processes and Polymers (in press)

Detailed reference viewed: 16 (3 ULg)
Full Text
Peer Reviewed
See detailLiquid-flooded compression and expansion in scroll machines - Part I: Model development
Bell, Ian ULg; Lemort, Vincent ULg; Groll, Eckhard et al

in International Journal of Refrigeration (2012)

A detailed mechanistic model has been developed for scroll compressors and scroll expanders with liquid flooding for application to the Liquid Flooded Ericsson Cycle. This model is based on the ... [more ▼]

A detailed mechanistic model has been developed for scroll compressors and scroll expanders with liquid flooding for application to the Liquid Flooded Ericsson Cycle. This model is based on the integration of a set of differential equations that arise from the conservation laws. The impact of the flooding liquid on the working process is also included through mixture properties as well as treatment of two-phase flow pressure drop. With the working process known, it is then possible to solve for the compressor power, total mass flow rate and other model outputs. The fine level of detail in the model allows for the investigation of the impact of design changes to the scroll machines. This model can also be readily extended to allow for the analysis of liquid flooded vapor compression refrigeration. [less ▲]

Detailed reference viewed: 35 (7 ULg)
Full Text
Peer Reviewed
See detailLiquid-Liquid and Vapor-Liquid Equilibria in Water + Poly(ethylene glycol) + Sodium Sulfate
Hammer, Steffen; Pfennig, Andreas ULg; Stumpf, Matthias

in Journal of Chemical & Engineering Data (1994), 39(3), 409-413

Detailed reference viewed: 13 (0 ULg)
Full Text
Peer Reviewed
See detailLiquid-liquid extraction design under uncertainty
Rüngeler, Bettina; Pfennig, Andreas ULg

Conference (2014, September)

In the field of liquid-liquid extraction a variety of new processes like extraction from fermentation broths, aqueous two-phase systems or extraction with high viscous media is investigated in the recent ... [more ▼]

In the field of liquid-liquid extraction a variety of new processes like extraction from fermentation broths, aqueous two-phase systems or extraction with high viscous media is investigated in the recent years. Process engineers often do not have broad experience with these special applications of liquid-liquid extraction. Therefore it is necessary to find a metric to estimate the quality of a design solution and to compare different possible liquid-liquid extraction processes at an early stage of the design process. One possibility is to define an evaluation criterion like for example the overall process costs, which is determined for each option, and explicitly consider uncertainties in the design variables. A framework for an easy comparison of different liquid-liquid extraction processes ranging from various solvents to diverse equipment during every stage of the process development is presented. Using uncertainty propagation the overall uncertainty of the chosen evaluation criterion is estimated. As each step of a design process is meant to reduce uncertainty about the final solution of the design challenge the following design steps are proposed in a way that the new information has the highest possible impact on deciding whether a process option is further investigated or not regarded in the next step. Within this framework it is possible to make sound decisions yet at an early stage of the process development and allocate resources for the process and equipment design in an efficient manner. To keep track on all investigated alternatives and decisions, results can be visualized and documented in option trees. In this presentation an algorithm considering uncertainties in the design of liquid-liquid extraction is introduced and its general application on the design process is discussed. [less ▲]

Detailed reference viewed: 37 (1 ULg)
Full Text
See detailLiquid-Liquid Extration
Müller, E; Berger, R; Blass, E et al

in Ullman's Encyclopedia of Industrial Chemistry (2008)

Detailed reference viewed: 15 (4 ULg)
See detailLiquid-Liquid Phase Separation
Chatterjee, M; Franken, H; Speth, H et al

Conference (2000)

Detailed reference viewed: 1 (0 ULg)
Full Text
Peer Reviewed
See detailLiquid-liquid Phase Separation in Batch Settling with Inclined Plate
Mungma, Nuttakul; Chuttrakul, Pornprapa; Pfennig, Andreas ULg

in Jurnal Teknologi - Science and Engineering (2014), 67(4), 55-58

Detailed reference viewed: 12 (1 ULg)
See detailLiquid-liquid phase separation in batch settling with inclined plates
Mungma, N; Chuttrakul, P; Pfennig, Andreas ULg

Conference (2013)

Detailed reference viewed: 1 (0 ULg)
Full Text
Peer Reviewed
See detailLiquid-liquid phase separation in gravity settler with inclined plates
Schlieper, L; Chatterjee, M; Pfennig, Andreas ULg

in AIChE Journal (2004), 50(4), 802-811

Detailed reference viewed: 27 (0 ULg)
See detailLiquidation des créances et récompenses au titre d'investissements immobiliers
Leleu, Yves-Henri ULg

in Casman, Hélène; Leleu, Yves-Henri; Verbeke, Alain (Eds.) Le droit patrimonial de la famille sans préjugés (2002)

Detailed reference viewed: 45 (4 ULg)
See detailLiquidation des créances et récompenses au titre d'investissements immobiliers
Leleu, Yves-Henri ULg

in Leleu, Yves-Henri; Casman, Hélène; Verbeke, Alain (Eds.) Le droit des régimes matrimoniaux en pratique (2002)

Detailed reference viewed: 40 (3 ULg)