Experimental study on particle velocity and acceleration length in pneumatic and hydraulic conveying systems

Santo, Nir; Portnikov, Dimitry; Kalman, Haim

doi:10.1016/j.powtec.2020.11.064

Cited by 9 publications

(11 citation statements)

References 11 publications

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“…In another study [9], evaluated the relationship between hydraulic and pneumatic systems. Experiments on hydraulic transport in horizontal and vertical pipes were carried out.…”

Section: Introductionmentioning

confidence: 99%

Research of Spherical Capsule Feeding System in Hydraulic Pipelines

Ulusarslan¹

2021

IJET

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Feeding the material to be transported in the hydraulic pipelines to the system is a subject open to research. The shape, size and density of the material gain importance in the selection of feeding systems. Finding the pressure drops that occur in the flow of spherical ice capsules with water is the basis of the research. However, before the measurements were made, preliminary research was carried out on feeding the capsules to the system during the installation of the experimental set-up. In the experimental study with solid particles with the diameter ratios (0.8) and densities (960 kg/m3) with smaller dimensions (d=0.014m), a pipe construction was obtained in which the solid particles are easily fed into the hydraulic pipeline. Experimental study revealed that lower than predicted pressures occur at the point where solid particles are fed into the pipe. This result means a greater pressure drop than the pressure drops obtained in the venturimeter zone with the same diameter ratio. In this article includes a step-by-step method and a sample pipe geometry for studies that require a low pressure zone in hydraulic pipelines. The pipe geometry designed in this study will form a model for the supply systems in the pipelines. The low pressure region is provided with a pipe and flow arrangement without consuming energy.

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“…In another study [9], evaluated the relationship between hydraulic and pneumatic systems. Experiments on hydraulic transport in horizontal and vertical pipes were carried out.…”

Section: Introductionmentioning

confidence: 99%

Research of Spherical Capsule Feeding System in Hydraulic Pipelines

Ulusarslan¹

2021

IJET

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“…In thermodynamic equilibrium ( SI = 0), the fraction of the ion activity product and the solubility product is in unity. When the ion activity product exceeds the solubility product ( SI > 0), precipitation is thermodynamically attainable 10 to regain equilibrium. For calcium carbonate, the Langelier saturation index ( LSI ), is commonly applied to assess the saturation 5, 10.…”

Section: Introductionmentioning

confidence: 99%

“…When the ion activity product exceeds the solubility product ( SI > 0), precipitation is thermodynamically attainable 10 to regain equilibrium. For calcium carbonate, the Langelier saturation index ( LSI ), is commonly applied to assess the saturation 5, 10. Besides thermodynamic conditions, kinetics, e.g., expressed by nucleation induction times, are decisive to evaluate the possibility and the relevance of scaling in membrane processes 8, 10.…”

Section: Introductionmentioning

confidence: 99%

“…For calcium carbonate, the Langelier saturation index ( LSI ), is commonly applied to assess the saturation 5, 10. Besides thermodynamic conditions, kinetics, e.g., expressed by nucleation induction times, are decisive to evaluate the possibility and the relevance of scaling in membrane processes 8, 10. The highest probability for the occurrence of scaling is found at the highest concentration of rejected ions and thus in the concentrate at the outlet of the rear element of the last stage (also called brine or retentate) 7, 8.…”

Section: Introductionmentioning

confidence: 99%

“…Such concentration increase may result in positive SI of certain salts, and thus, induce scaling 5. Scaling causes, among other things, reduced permeate flux (and quality), membrane deterioration and hence higher operating costs 10. Common salts inducing scaling are calcium carbonate (e.g., calcite and aragonite), calcium sulfate, calcium phosphate, calcium fluoride, barium sulfate, strontium sulfate and (amorphous) silica forms 5, 8, 10, 11.…”

Section: Introductionmentioning

confidence: 99%

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Cost-efficient operation of inland brackish water reverse osmosis (BWRO) demands a high recovery. As recovery of BWRO is often limited to scaling, antiscalants (AS) are applied, whose environmental impact is disputed. In this paper, different systems (conventional single-and two-stage plug flow RO (PFRO) and closed-circuit RO (CCRO)) were simulated in various configurations (AS dosing, ion exchange (IEX) pretreatment, elements per vessel) to determine the recovery limiting factor for a hard feed. The novel proposed IEX-CCRO reached the highest recovery without AS dosing. PFRO configurations had lower recoveries, mainly due to hydraulic limitations. Utilizing RO brine reduced both the water demand and salts necessary for IEX regeneration.

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2D MOFs‐based Materials for the Application of Water Pollutants Removing: Fundamentals and Prospects

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Water quality can have serious impacts on human health. One crucial issue of water pollution seriously affects our safety due to the continually emerging of discovered anthropogenic pollutants. The water treatment technologies are persistent improvement to adapt such new contaminants, which accelerates the evolution of materials science to explore solving the problems. Metal-organic Frameworks (MOFs) as the significant porous and multi-dimensional networks has been concerned for toxic pollutant elimination, especially probed the applications of outstanding layered 2D skeletons MOFs-based materials. The emphases of this review highlight the 2D MOFs-based materials used in water remediation and treatment strategies including adsorption and catalysis methods. Further, the prospects and challenges of 2D MOFs-based materials for water treatments applications would be surveyed meticulously for the future research and development.

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Experimental study on particle velocity and acceleration length in pneumatic and hydraulic conveying systems

Cited by 9 publications

References 11 publications

Research of Spherical Capsule Feeding System in Hydraulic Pipelines

Research of Spherical Capsule Feeding System in Hydraulic Pipelines

Limits of High Recovery Inland Desalination: Closed‐Circuit Reverse Osmosis – a Viable Option?

2D MOFs‐based Materials for the Application of Water Pollutants Removing: Fundamentals and Prospects

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