Showing papers in "Chemical Engineering Journal in 1974"

TL;DR: In this article, an attempt has been made to form a qualitative correlation between the nozzle shape and the issuing jet shape, which is best achieved by a sudden, smooth contraction of the flow area from the supply line to the desired nozzle diameter.

TL;DR: In this paper, the effect of the liquid physical properties on the liquid-phase longitudinal dispersion coefficient was studied and a new correlation was presented and shown to correlate the experimental data with an average deviation of 3.07%.

TL;DR: In this paper, the effects of pressure on the liquid-phase mass transfer coefficient at the free gas-liquid interface and on the volumetric coefficient k L a at the gas-bubble liquid interface in a stirred vessel were studied with various gas liquid systems in the pressure range 2-100 atm.

TL;DR: In this article, the departure from the Newtonian drag appears as a quadratic function of velocity for both flow past a sphere and flow past cylinders, and the results are compared with existing theoretical predictions.

TL;DR: In this article, an experimental study has been carried out into the factors controlling the spray characteristics of spinning cup atomisers, and it is found that the sizes of drops produced are critically dependent upon the process by which they are formed.

TL;DR: In this article, a stable emulsion in a porous solid is explicitly considered and linear flow relations for both internal and external phases are assumed and gravitation and compression are neglected; however, a capillarity force is defined that may be interpreted in terms of contact angle hysteresis or variations in pore size, with or without three phase contact.

TL;DR: In this paper, the slow flow of an elastico-viscous fluid past an immersed body is examined analytically using successive integral transform techniques which provide solutions for both steady and unsteady cases.

TL;DR: In this article, the dependence of cavitation induced phenomena (erosion, luminescense, chemical reactions) on the physical and acoustical parameters of a system are discussed.

TL;DR: In this paper, les resultats d'aires interfaciales and coefficients de transfert de matiere directement exploitables and extrapolables for les differents absorbeurs and reacteurs gaz-liquide recontres industriellement.

TL;DR: In this paper, the capacities of two designs of flat bottomed tank to suspend fast settling particles homogeneously have been evaluated, and the results showed that they can achieve better levels of homogeneity, without stagnant pockets, at lower propeller tip speeds and significantly lower power consumptions.

TL;DR: In this article, the authors measured the rising velocity, including angle and wake size of large single air bubbles in a two-dimensional column, 39.5 cm wide and 112 cm high, which contained a liquid or three-phase fluidised bed.

TL;DR: In this article, a model is proposed in which capillarity effects are specifically taken into account in describing the flow of stable emulsions in porous solids, yielding a closed form equation for total volume flow versus time.

TL;DR: In this paper, experimental determinations of the compositions of coexisting liquid and vapour phases were made for the systems n-heptane-nitrogen, methylcyclohexane -nitrogen and methylcycle-hexane-n-hepticane.

TL;DR: In this article, a semi-infinite parallel-plate dialysers were analyzed by solving the convective diffusion equations for the two fluids (blood and dialysate) for arbitrary interfacial concentration distributions and linking the two solutions via a continuity-of-flux boundary condition at the membrane surfaces.

TL;DR: In this paper, the Krogh cylinder type of model for capillary-tissue mass transfer is solved analytically as a conjugated boundary value problem, which avoids recourse to the use of arbitrary interphase mass transfer coefficients.

TL;DR: In this article, the scaling effect of mass transfer columns with increasing dimensions is discussed and the simplest models for transverse non-uniformity of the flow distribution are discussed and calculated.

TL;DR: In this article, a theory for the treatment of mass transfer in natural convection at a vertical electrode is presented for a specific case of magnetically enhanced d.c. electrolysis.

TL;DR: In this paper, a simplified statistical model of the plate operation in the homogeneous froth regime is presented, which is based on previously determined statistical properties of the pressure drop across the dispersion.

TL;DR: In this paper, the random fluctuations of the pressure drop across the gas-liquid dispersion have been recorded at a point near the centre on sieve plates without downcomers, and the relation between the standard deviation of the froth pressure drop fluctuations and the average liquid hold-up was established.

TL;DR: In this article, an approximation technique is introduced through which it has been made possible the derivation of analytic relations for the thermodynamic properties of simple liquids in which the intermolecular potential can be represented by the Lennard-Jones (m-n) potential function.

TL;DR: In this paper, the mass transfer coefficient of physical absorption by a free surface into agitated liquid was measured and an adequate description was obtained by including the effects of gravity and surface forces in the form of Weber and Froude numbers as well as the effect of electric forces expressed by the value of surface potential.

TL;DR: In this article, a mathematical model to represent the extraction of sugar from sugar cane is described, which is based on the assumption that extraction occurs according to two parallel first-order processes, corresponding to displacement-washing and diffusional processes.

TL;DR: In this paper, the authors investigated the kinetics of a catalytic reactor in which diffusion, natural convection, and chemical reaction occur by solving the equations of mass, heat, and momentum transfer with a digital computer by the method of finite differences.

TL;DR: In this article, the backflow cell model was applied to explain the measured temperature profiles and a satisfactory agreement between measured and computed results was obtained, which is of advantage because the mathematical treatment is simple as shown by a numerical investigation for multiple states in axial dispersed reactors.

TL;DR: In this article, the authors analyse the dynamischen Verhalten eines katalytischen Festbettreaktors im Bereich mehrfacher stationarer Zustande mit Hilfe von kontinuierlichen Modellgleichungen am Beispiel des Zundens and Verloschens einer stark exothermen Reaktion digital simuliert.

TL;DR: In this paper, a modified time delay model has been developed, attributing an extra parameter exponent m to the time variable, valid for the global exit stream and for individual liquid threads flowing through the column.

TL;DR: In this paper, le mecanisme de telles interferences, identifie, illustre et classe les differentes situations which en resultent dans le cas d'un systeme binaire, en operation isolee aussi bien qu'en regime cyclique.