Statistical characterization of the flow structure of air-water-solid particles three-phase flow in the airlift pump-bubble generator system

2021 ◽  
Vol 82 ◽  
pp. 102062
Author(s):  
I.G.N.B. Catrawedarma ◽  
Fadliqa Aghid Resnaraditya ◽  
Deendarlianto ◽  
Indarto
2014 ◽  
Vol 35 (1) ◽  
pp. 75-96 ◽  
Author(s):  
Andrzej Burghardt

Abstract The majority of publications and monographs present investigations which concern exclusively twophase flows and particulary dispersed flows. However, in the chemical and petrochemical industries as well as in refineries or bioengineering, besides the apparatuses of two-phase flows there is an extremely broad region of three-phase systems, where the third phase constitutes the catalyst in form of solid particles (Duduković et al., 2002; Martinez et al., 1999) in either fixed bed or slurry reactors. Therefore, the goal of this study is to develop macroscopic, averaged balances of mass, momentum and energy for systems with three-phase flow. Local instantaneous conservation equations are derived, which constitute the basis of the method applied, and are averaged by means of Euler’s volumetric averaging procedure. In order to obtain the final balance equations which define the averaged variables of the system, the weighted averaging connected with Reynolds decomposition is used. The derived conservation equations of the trickle-bed reactor (mass, momentum and energy balance) and especially the interphase effects appearing in these equations are discussed in detail.


2010 ◽  
Vol 13 (05) ◽  
pp. 782-790 ◽  
Author(s):  
E. Niz-Velásquez ◽  
R.G.. G. Moore ◽  
K.C.. C. van Fraassen ◽  
S.A.. A. Mehta ◽  
M.G.. G. Ursenbach

Summary In this paper, an improved characterization of three-phase flow under high-pressure-air-injection (HPAI) conditions was achieved on the basis of experimental results and numerical reservoir simulation. A three-phase coreflood experiment was conducted at reservoir conditions, using 37°API stock-tank oil, an 84% nitrogen and 16% carbon dioxide flue-gas mixture, and 3% potassium chloride brine. The aim of the test was to evaluate the effects that the highly liquid-saturated front produced by the thermal reactions has on the mobility of each phase. Departing from connate-water saturation and reservoir pressure and temperature, sequential injection of water, gas, and oil was carried out, followed by a final gasflood to residual liquid saturation. Other two- and three-phase tests performed on this rock specimen were published elsewhere (Niz-Velásquez et al. 2009). Numerical history matching was employed to determine oil/water and liquid/gas relative permeability (kr) curves for both imbibition and drainage cases. A combustion-tube (CT) test was simulated using conventional kr curves and a set that included hysteresis. The degree of hysteresis observed during the coreflood test was maintained for the CT simulation. History matching of the coreflood showed that kr to the gas phase is much smaller during liquid reimbibition than during drainage. The use of gas-phase hysteresis for the CT test allows for a better matching of liquid volumes and pressure drop. Analysis of the simulated data suggests that the reduction in gas-phase mobility encourages an early increase in the oil rate, which is more consistent with experimental data than what is predicted by a model with conventional kr. The analysis also reveals that water distilled below the saturated steam temperature plays an important role in the increase of liquid saturation and oil mobilization. The improved characterization of relative permeability considering gas-phase hysteresis for simulating HPAI enhances the predictive capability of available commercial simulators, providing a more certain method to evaluate the technical and economical feasibility of a project. The ability to predict an early increase in oil rate, consistent with experimental observations, results in improved economics for the project.


2020 ◽  
Vol 56 (9) ◽  
Author(s):  
Alessio Scanziani ◽  
Abdulla Alhosani ◽  
Qingyang Lin ◽  
Catherine Spurin ◽  
Gaetano Garfi ◽  
...  

2020 ◽  
Author(s):  
Nurmala Dyah Fajarningrum ◽  
Deendarlianto ◽  
Indarto ◽  
IGNB Catrawedarma

2017 ◽  
Vol 24 (3) ◽  
pp. 1281-1301
Author(s):  
S. Jahanbakhshi ◽  
M.R. Pishvaie ◽  
R. Bozorgmehry Boozarjomehry

2018 ◽  
Vol 121 ◽  
pp. 446-455 ◽  
Author(s):  
Alessio Scanziani ◽  
Kamaljit Singh ◽  
Tom Bultreys ◽  
Branko Bijeljic ◽  
Martin J. Blunt

1997 ◽  
Vol 119 (4) ◽  
pp. 995-1002 ◽  
Author(s):  
D. P. Margaris ◽  
D. G. Papanikas

The object of the present study is to access the performance of an airlift pump under predetermined operating conditions. The gas-liquid-solid three phase flow in an airlift pump is described by a system of differential equations, which derives from the fundamental conservation equations of continuity and momentum. This approach leads to a more general mathematical model which is applicable to a wide range of installations, from small airlift pumps to very large systems, suitable for deep-sea mining. For the frictional pressure drop calculation a new correlation, based on a pseudoliquid model, has been proposed. In addition, parameters such as the drag coefficient of both solid and gas phase, the shape of particles and the compressibility factor, which is very important for deep-sea mining, have been incorporated in the governing equations. The application of the computational algorithm to different geometry and flow conditions of an airlift pump leads to the optimization of the system. The numerical simulation results clearly show a very good agreement with experimental and computational data of other researchers. The analysis methods have been combined in an easily used computer code which is a very useful tool for the optimum design of airlift pump systems.


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