Analysis of liquid flow distribution in a trickle bed reactor

in Frontiers in Industrial Process Tomography (1995)

The use of large scale computer assisted tomography for the study of hydrodynamics in trickling filters

Poster (1994)

The use of large scale computer assisted tomography for the study of hydrodynamics in trickling filters

in Chemical Engineering Science (1994), 49(24B), 5271-5280

In this paper, a new experimental technique is proposed, based on X-ray tomography, allowing the analysis of the gas-liquid-solid phase distribution in trickling filters. Tomography refers to the cross ... [more ▼]

In this paper, a new experimental technique is proposed, based on X-ray tomography, allowing the analysis of the gas-liquid-solid phase distribution in trickling filters. Tomography refers to the cross-sectional imaging of an object from data collected by illuminating this object from many directions. The experimental set-up allows the scanning of transverse sections of rather large filters: up to 0.8 m diameter and 2 m height can be irradiated. Experiments were carried out both without and with liquid flow. In the absence of liquid, the reconstructed images give a view of the non-uniformity of the solid phase distribution. The images obtained are very complex because they result from the superposition of several distributions with different spatial scales. The existence of a first spatial scale is shown which allows separation of the properties belonging to the individual packing elements from those belonging to the bed scale. When liquid is flowing through the packed bed, the distribution of the liquid hold-up is clearly evidenced, despite the very low liquid film thickness. [less ▲]

Rational descriptionthe trickle flow through packed beds. Part I : Liquid distribution far form the distributer

in Chemical Engineering (1992), 48

Statistical hydrodynamics in trickle flow columns

in AIChE Journal (1992), 38

Evaluation of the performances of random plastic media in aerobic trickling filters

in Water Science & Technology (1990), 22

Rôle de la dispersion radiale et du mouillage local sur l'hétérogénéité de l'écoulement de liquide dans un lit bactérien

in Tribune de l'Eau (La) (1989), 41

Utilitation des nodules océaniques polymétalliques en hydrotraitement des coupes pétrolières lourdes avant leur valorisation métallurgique

in L'industrie minérale - Mines et Carrières - Les techniques (1986), 68

Gasification of coal for the generation of electricity in a combined cycle

in Bulletin Scientifique de l'Association des Ingénieurs Electriciens sortis de l'Institut Electrotechnique Montefiore (1985), 2

The article reviews the historical development of processes for the gasification of coal, and discusses the principal chemical reactions employed, describing four principal types of gasifier. It proposes ... [more ▼]

The article reviews the historical development of processes for the gasification of coal, and discusses the principal chemical reactions employed, describing four principal types of gasifier. It proposes a scheme for combined-cycle generation consisting of a gasifier, gas turbine, heat exchanger/steam generator, and steam turbine. The economics of the scheme are discussed, concluding that although the forecast unit cost of generation is not excessive, the time is not yet ripe for the installation in Belgium of such schemes on a large scale [less ▲]

Influence of the reactional system on the irrigation rate in trickle-bed reactors

in Chemical and Catalytic Reactor Modelling (1984)