Experimental and analytical investigations of airlift pumps operating in three-phase flow

Kassab, Sadek Z.; Kandil, Hamdy A.; Warda, H. A.; Ahmed, Wael H.

doi:10.1016/j.cej.2006.12.009

Cited by 72 publications

(90 citation statements)

References 11 publications

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“…However, if only liquid is transported, then the pipe curvature of the air lift does not affect its capacity [56]. The performed investigations show that the air lifts are characterized by low operational efficiency compared to conventional pumps [45,46,57,58].…”

Section: Introductionmentioning

confidence: 94%

“…The two-phase flows (liquid-gas) in the pipelines of air lifts are the best recognized. The investigations performed to date allowed to work out so-called flow structure maps for air lifts and mathematical models for simulations of the flows occurring there [42][43][44][45][46][47][48][49][50][51][52][53]. Investigations of air lifts made of rectangular [54] and crooked [55] pipes were also carried out.…”

Section: Introductionmentioning

confidence: 99%

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Empirical Formulas for Calculation of Negative Pressure Difference in Vacuum Pipelines

Kalenik

2015

Water

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Abstract:The paper presents the analysis of results of empirical investigations of a negative pressure difference in vacuum pipelines with internal diameters of 57, 81, 102 mm. The investigations were performed in an experimental installation of a vacuum sewage system, built in a laboratory hall on a scale of 1:1. The paper contains a review of the literature concerning two-phase flows (liquid-gas) in horizontal, vertical and diagonal pipelines. It presents the construction and working principles of the experimental installation of vacuum sewage system in steady and unsteady conditions during a two-phase flow of water and air. It also presents a methodology for determination of formula for calculation of a negative pressure difference in vacuum pipelines. The results obtained from the measurements of the negative pressure difference Δpvr in the vacuum pipelines were analyzed and compared with the results of calculations of the negative pressure difference Δpvr, obtained from the determined formula. The values of the negative pressure difference Δpvr calculated for the vacuum pipelines with internal diameters of 57, 81, and 102 mm with the use of Formula (19) coincide with the values of Δpvr measured in the experimental installation of a vacuum sewage system. The dependence of the negative pressure difference Δpvr along the length of the vacuum pipelines on the set negative pressure in the vacuum container pvzp is linear. The smaller the vacuum pipeline diameter, the greater the negative pressure difference Δpvr is along its length.

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Section: Introductionmentioning

confidence: 94%

Section: Introductionmentioning

confidence: 99%

Empirical Formulas for Calculation of Negative Pressure Difference in Vacuum Pipelines

Kalenik

2015

Water

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“…Airlifting uses compressed gas to lift the liquid-gas or solid-liquid-gas multiphase flow [2]. It is also used in other industries, such as in chemical industry to transport toxic substances and sewage treatment plants [3]. Although the airlifting transport in DSM has been researched for a long time, until now there is no corresponding commercial scaled DSM project in progress.…”

Section: Introductionmentioning

confidence: 99%

“…Actually, the gas flux rate is the given parameter and the flux rates of solid and liquid are calculated parameters. Additionally, Yoshinaga and Sato's model is created for uniform particles size distribution [3]. Kassab et al [3] innovated Yoshinaga and Sato's model by taking the relationship between the liquid and gas flux rates into consideration, which was validated by a vertical pipe lifting system with height of 3.75 m and diameter of 25.4 mm.…”

Section: Introductionmentioning

confidence: 99%

“…Additionally, Yoshinaga and Sato's model is created for uniform particles size distribution [3]. Kassab et al [3] innovated Yoshinaga and Sato's model by taking the relationship between the liquid and gas flux rates into consideration, which was validated by a vertical pipe lifting system with height of 3.75 m and diameter of 25.4 mm. In the numerical calculation model proposed by Yoshinaga and Sato, the compressibility of gas is neglected because of the small-scaled experiments.…”

Section: Introductionmentioning

confidence: 99%

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Technological and Profitable Analysis of Airlifting in Deep Sea Mining Systems

Rhee

Schott

2017

Minerals

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Airlifting technology utilized in deep-sea mining (DSM) industry was proposed in the 70s of last century, which was triggered by the discovery of vast amounts of mineral resources on the seabed. The objective of this paper is to assess the technological feasibility and profitability analyses in terms of solid production rate, energy consumption per tonnage of mineral, and profitability per tonnage of mineral. The effects of submergence ratio, pipe diameter, particle diameter, mining depth, and gas flux rate are investigated. The analysis is based on a numerical calculation performed in a Matlab environment. The research reported in this paper can assist to select an optimal transport plan for DSM projects depending on its solid production rate, energy consumption, and profitability.

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Multiphase Flow Pumping

Badr

Ahmed

2014

Pumping Machinery Theory and Practice

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Experimental and analytical investigations of airlift pumps operating in three-phase flow

Cited by 72 publications

References 11 publications

Empirical Formulas for Calculation of Negative Pressure Difference in Vacuum Pipelines

Empirical Formulas for Calculation of Negative Pressure Difference in Vacuum Pipelines

Technological and Profitable Analysis of Airlifting in Deep Sea Mining Systems

Multiphase Flow Pumping

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