The Experts below are selected from a list of 282 Experts worldwide ranked by ideXlab platform

Amadeu K. Sum - One of the best experts on this subject based on the ideXlab platform.

  • Rock-Flow Cell: An Innovative Benchtop Testing Tool for Flow Assurance Studies
    Industrial & Engineering Chemistry Research, 2019
    Co-Authors: Aline Melchuna, Xianwei Zhang, Rigoberto E. M. Morales, Ana Cameirão, Jean-michel Herri, Amadeu K. Sum
    Abstract:

    Flow assurance is a critical component in the design and operation of robust oil/gas production systems. Undesired precipitation of solids (gas hydrates, wax, asphaltenes, scale) reduces the production rate and often leads to costly and hazardous disruptions. Many experimental and modeling efforts have been made to build knowledge of managing such risks. However, a major difficulty is to transfer the laboratory data to the field conditions. We introduce a new experimental system, the rock-Flow Cell, which is compact and requires fewer resources to build and operate. This system can readily achieve different Flow regimes by controlling the liquid loading, water cut, and rocking angle/speed. A sight glass visualizes when, where, how, and how much solid forms and precipitates out. Gas hydrate formation tests with anti-agglomerants are presented to demonstrate the capabilities. The rock-Flow Cell is an innovative testing tool for Flow assurance studies by properly capturing thermohydraulic conditions in actual Flowlines.

  • Rock-Flow Cell: An Innovative Benchtop Testing Tool for Flow Assurance Studies
    Industrial & Engineering Chemistry Research, 2019
    Co-Authors: Aline Melchuna, Xianwei Zhang, Rigoberto E. M. Morales, Ana Cameirão, Jean-michel Herri, Amadeu K. Sum
    Abstract:

    Flow assurance is a critical component in the design and operation of robust oil/gas production systems. Undesired precipitation of solids (gas hydrates, wax, asphaltenes, scale) reduces the production rate and often leads to costly and hazardous disruptions. Many experimental and modeling efforts have been made to build knowledge of managing such risks. However, a major difficulty is to transfer the laboratory data to the field conditions. We introduce a new experimental system, the rock-Flow Cell, which is compact and requires fewer resources to build and operate. This system can readily achieve different Flow regimes by controlling the liquid loading, water cut, and rocking angle/speed. A sight glass visualizes when, where, how, and how much solid forms and precipitates out. Gas hydrate formation tests with anti-agglomerants are presented to demonstrate the capabilities. The rock-Flow Cell is an innovative testing tool for Flow assurance studies by properly capturing thermohydraulic conditions in actua...

  • Rock-Flow Cell: An Innovative Benchtop Testing Tool for Flow Assurance Studies
    2019
    Co-Authors: Aline Melchuna, Xianwei Zhang, Ana Cameirão, Jean-michel Herri, Rigoberto Morales, Amadeu K. Sum
    Abstract:

    Flow assurance is a critical component in the design and operation of robust oil/gas production systems. Undesired precipitation of solids (gas hydrates, wax, asphaltenes, scale) reduces the production rate and often leads to costly and hazardous disruptions. Many experimental and modeling efforts have been made to build knowledge of managing such risks. However, a major difficulty is to transfer the laboratory data to the field conditions. We introduce a new experimental system, the rock-Flow Cell, which is compact and requires fewer resources to build and operate. This system can readily achieve different Flow regimes by controlling the liquid loading, water cut, and rocking angle/speed. A sight glass visualizes when, where, how, and how much solid forms and precipitates out. Gas hydrate formation tests with anti-agglomerants are presented to demonstrate the capabilities. The rock-Flow Cell is an innovative testing tool for Flow assurance studies by properly capturing thermohydraulic conditions in actual Flowlines

Frank Marken - One of the best experts on this subject based on the ideXlab platform.

  • self supported methoxylation and acetoxylation electrosynthesis using a simple thin layer Flow Cell
    Journal of The Electrochemical Society, 2006
    Co-Authors: Daisuke Horii, Toshio Fuchigami, Mahito Atobe, Frank Marken
    Abstract:

    Self-supported electrochemical methoxylation and acetoxylation of various organic molecules were carried out using a thin-layer Flow Cell without intentionally added supporting electrolyte. The thin-layer Flow Cell employed in this work had a simple geometry with working and auxiliary electrodes directly facing each other with 80 mu m distance. Controlling factors for these kinds of self-supported electrochemical methoxylation and acetoxylation, such as the electrode material, the current density, and the Flow rate were optimized to allow moderate to high yields of the corresponding methoxylated and acetoxylated products to be achieved in single Flow-through operations. (c) 2006 The Electrochemical Society.

David P. Trudgeon - One of the best experts on this subject based on the ideXlab platform.

  • The Effect of Electrolyte and Additive Concentration on Zinc-Nickel Flow Cell Performance
    Electrochimica Acta, 2021
    Co-Authors: David P. Trudgeon
    Abstract:

    Abstract This work aims to identify a suitable electrolyte composition for the operation of a zinc–nickel Flow Cell at ambient temperature. The effect of varying electrolyte composition containing KOH, ZnO, tetraethylammonium hydroxide (TEAH) or tetrabutylammonium bromide (TEAB) electrolyte additives are investigated. A 15 mM concentration of TEAH is found to provide smooth and compact zinc depositions. Increasing concentrations of KOH are found to be detrimental to voltaic efficiency, with coulombic efficiency peaking in 6 M KOH. The coulombic efficiencies of both zinc and nickel electrodes improve with ZnO concentration. Galvanostatic zinc–nickel Flow Cell cycling yields the highest efficiencies in an electrolyte of 6 M KOH with 0.5 M ZnO and 15 mM TEAH, with coulombic, voltaic and energy efficiencies of 98%, 88% and 86%, respectively, over 70 stable charge/discharge cycles.

  • The Effect of Electrolyte and Additive Concentration on Zinc-Nickel Flow Cell Performance
    'Elsevier BV', 2020
    Co-Authors: David P. Trudgeon, Li X
    Abstract:

    This is the author accepted manuscript. The final version is available from Elsevier via the DOI in this recordThis work aims to identify a suitable electrolyte composition for the operation of a zinc-nickel Flow Cell at ambient temperature. The effect of varying electrolyte composition containing KOH, ZnO, tetraethylammonium hydroxide (TEAH) or tetrabutylammonium bromide (TEAB) electrolyte additives are investigated. A 15 mM concentration of TEAH is found to provide smooth and compact zinc depositions. Increasing concentrations of KOH are found to be detrimental to voltaic efficiency, with coulombic efficiency peaking in 6 M KOH. The coulombic efficiencies of both zinc and nickel electrodes improve with ZnO concentration. Galvanostatic zinc-nickel Flow Cell cycling yields the highest efficiencies in an electrolyte of 6 M KOH with 0.5 M ZnO and 15 mM TEAH, with coulombic, voltaic and energy efficiencies of 98 %, 88 % and 86 % respectively over 70 stable charge/discharge cycles.Engineering and Physical Sciences Research Council (EPSRC)University of Exete

Aline Melchuna - One of the best experts on this subject based on the ideXlab platform.

  • Rock-Flow Cell: An Innovative Benchtop Testing Tool for Flow Assurance Studies
    Industrial & Engineering Chemistry Research, 2019
    Co-Authors: Aline Melchuna, Xianwei Zhang, Rigoberto E. M. Morales, Ana Cameirão, Jean-michel Herri, Amadeu K. Sum
    Abstract:

    Flow assurance is a critical component in the design and operation of robust oil/gas production systems. Undesired precipitation of solids (gas hydrates, wax, asphaltenes, scale) reduces the production rate and often leads to costly and hazardous disruptions. Many experimental and modeling efforts have been made to build knowledge of managing such risks. However, a major difficulty is to transfer the laboratory data to the field conditions. We introduce a new experimental system, the rock-Flow Cell, which is compact and requires fewer resources to build and operate. This system can readily achieve different Flow regimes by controlling the liquid loading, water cut, and rocking angle/speed. A sight glass visualizes when, where, how, and how much solid forms and precipitates out. Gas hydrate formation tests with anti-agglomerants are presented to demonstrate the capabilities. The rock-Flow Cell is an innovative testing tool for Flow assurance studies by properly capturing thermohydraulic conditions in actual Flowlines.

  • Rock-Flow Cell: An Innovative Benchtop Testing Tool for Flow Assurance Studies
    Industrial & Engineering Chemistry Research, 2019
    Co-Authors: Aline Melchuna, Xianwei Zhang, Rigoberto E. M. Morales, Ana Cameirão, Jean-michel Herri, Amadeu K. Sum
    Abstract:

    Flow assurance is a critical component in the design and operation of robust oil/gas production systems. Undesired precipitation of solids (gas hydrates, wax, asphaltenes, scale) reduces the production rate and often leads to costly and hazardous disruptions. Many experimental and modeling efforts have been made to build knowledge of managing such risks. However, a major difficulty is to transfer the laboratory data to the field conditions. We introduce a new experimental system, the rock-Flow Cell, which is compact and requires fewer resources to build and operate. This system can readily achieve different Flow regimes by controlling the liquid loading, water cut, and rocking angle/speed. A sight glass visualizes when, where, how, and how much solid forms and precipitates out. Gas hydrate formation tests with anti-agglomerants are presented to demonstrate the capabilities. The rock-Flow Cell is an innovative testing tool for Flow assurance studies by properly capturing thermohydraulic conditions in actua...

  • Rock-Flow Cell: An Innovative Benchtop Testing Tool for Flow Assurance Studies
    2019
    Co-Authors: Aline Melchuna, Xianwei Zhang, Ana Cameirão, Jean-michel Herri, Rigoberto Morales, Amadeu K. Sum
    Abstract:

    Flow assurance is a critical component in the design and operation of robust oil/gas production systems. Undesired precipitation of solids (gas hydrates, wax, asphaltenes, scale) reduces the production rate and often leads to costly and hazardous disruptions. Many experimental and modeling efforts have been made to build knowledge of managing such risks. However, a major difficulty is to transfer the laboratory data to the field conditions. We introduce a new experimental system, the rock-Flow Cell, which is compact and requires fewer resources to build and operate. This system can readily achieve different Flow regimes by controlling the liquid loading, water cut, and rocking angle/speed. A sight glass visualizes when, where, how, and how much solid forms and precipitates out. Gas hydrate formation tests with anti-agglomerants are presented to demonstrate the capabilities. The rock-Flow Cell is an innovative testing tool for Flow assurance studies by properly capturing thermohydraulic conditions in actual Flowlines

David Hernández Santos - One of the best experts on this subject based on the ideXlab platform.

  • Novel thin layer Flow-Cell screen-printed graphene electrode for enzymatic sensors.
    Biosensors & bioelectronics, 2016
    Co-Authors: Hussein Kanso, María Begoña González García, Laura Fernández Llano, Roland Ludwig, Pablo Fanjul Bolado, David Hernández Santos
    Abstract:

    Abstract A new Screen-printed electrodes (SPE) integrated in one channel Flow-Cell was developed. The one channel Flow-Cell is attached and directly changeable with electrode. In the new Flow-Cell the injection is done through an “in-line luer injection port” which can be less aggressive than wall-jet Flow Cell for a biological recognition element immobilized on the surface of the electrode. The sample volume can be easily controlled by the operator through a syringe. In this novel thin layer Flow-Cell screen-printed electrodes, the working electrode was modified with graphene materials, and an enhancement of electroactive area to 388% over a standard electrode was found. This new configuration was applied to study the entrapped Cellobiose dehydrogenase from the ascomycete Corynascus thermophilus ( Ct CDH) in a photocrosslinkable PVA-based polymer. The calibration curve of lactose using optimized parameters shows a wide linear measurement ranges between 0.25 and 5 mM. A good operational stability of the Ct CDH-PVA-modified graphene electrode is obtained, which keeps the same initial activity during 8 h and exhibits a good storage stability with a decrease of only 9% in analytical response after 3 months storage at 4 ◦ C.