A technical study on the Spraytec performances: influence of multiple light scattering and multi-modal drop-size distribution measurements

Triballier, Kaëlig; Dumouchel, Christophe; Cousin, Jean

doi:10.1007/s00348-003-0674-1

Cited by 32 publications

(14 citation statements)

References 10 publications

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“…The droplet velocity affects the residence time of dispersed phase. To obtain these hydrodynamic characteristics, various measurement methods have been developed, such as volume displacement method, photographing method, laser scattering method, and so on. Volume displacement method is a generally traditional measurement method for the total holdup, but the extraction column must be turned off during the measurement process, which could destruct the balance of two‐phase flow, therefore the real‐time monitor couldn't be achieved .…”

Section: Introductionmentioning

confidence: 99%

A study on hydrodynamic characteristics in a Φ38 pulsed extraction column by four‐sensor optical fiber probe

Yuan

Gao

2016

AIChE Journal

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Accurate prediction of dispersed phase droplet behavior is crucial to the design and scaling‐up of an extraction column. In this article, the dispersed droplet velocity algorithm and the diameter algorithm in a liquid–liquid two‐phase flow have been developed based on the bubble velocity model in gas–liquid two‐phase flow of Lucas [Measurement Science & Technology. 749, 758(2005)] and Shen [International Journal of Multiphase Flow. 593, 617(2005)]. Hydrodynamic characteristics, including droplet diameter, holdup and droplet velocity, were measured using a self‐made four‐sensor optical fiber probe in a 38 mm‐diameter pulsed sieve‐plate extraction column. Water and kerosene were used as continuous and dispersed phases, respectively. The influences of the pulsed intensity, the continuous and dispersed phase superficial velocities on the hydrodynamic characteristics were investigated. The experimental results show that it is reliable to use a four‐sensor optical probe to measure the hydrodynamic characteristics of a pulsed extraction column. © 2016 American Institute of Chemical Engineers AIChE J, 63: 801–811, 2017

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Section: Introductionmentioning

confidence: 99%

A study on hydrodynamic characteristics in a Φ38 pulsed extraction column by four‐sensor optical fiber probe

Yuan

Gao

2016

AIChE Journal

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“…Although many methods have been developed to measure the drop velocity, drop size distribution and holdup of the dispersed phase, the design and scaling‐up of extraction columns continues to rely heavily on pilot testing rather than model prediction. Among these measurement techniques, the laser scattering1 and photographing2 methods can only be applied to nonlight systems. Fluorescence3 and sampling4 methods can destroy the multiphase flow field, ultrasonic technology5 cannot measure the drop velocity and size distribution, and resistance probe6 can only be applied to systems with a conductive dispersed phase and insulated continuous phase.…”

Section: Introductionmentioning

confidence: 99%

Optical probe technique for two‐phase flow measurements in an extraction column

2005

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“…This results in a global fuel-lean environment of ϕ = 0.91, and Sg of 19.2 and a power of 9.95 kW. The spray droplet size distribution under non-reacting flow and without swirling flow [38,39] for this selected flame is given in Fig. 4.…”

Section: Accepted Manuscript N O T C O P Y E D I T E Dmentioning

confidence: 99%

Heavy Fuel Oil Combustion Characteristics Evaluation in Various Swirling Flow Conditions

Pei

Elhagrasy

Jiang

et al. 2021

Journal of Engineering for Gas Turbines and Power

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Heavy fuel oil (HFO) is an economical fuel alternative for power generation as its low production cost and high energy density. However, its incomplete combustion induced by the presence of long-chain petroleum molecules in the fuel results in high levels of emissions. Here, we investigate the influence of the swirl flow on the combustion and emissions of a spray HFO swirling flame. To this end, HFO is sprayed into a hot swirling air, using an air-blast nozzle. The flame blowout limits are tested under different swirl flows. An investigation of the in-flame temperature fields, gaseous emissions including CO, CO2, O2, NOX, SOX, UHC (Unburned Hydrocarbon) and solid particles in the form of cenospheres are used to quantify the performance of the HFO combustion. The influence of the HFO swirling flame is tested under different conditions of global equivalence ratio, swirling number, and tangential and axial airflow rates. A comparison of two different flame regimes that fuel-jet dominate flame and air-driven vortex flows are investigated and compared in various swirling flow conditions. The results show that the tangent air is the primary factor for preheating and evaporating the fuel, thus defining the flame operating regimes.

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A technical study on the Spraytec performances: influence of multiple light scattering and multi-modal drop-size distribution measurements

Cited by 32 publications

References 10 publications

A study on hydrodynamic characteristics in a Φ38 pulsed extraction column by four‐sensor optical fiber probe

A study on hydrodynamic characteristics in a Φ38 pulsed extraction column by four‐sensor optical fiber probe

Optical probe technique for two‐phase flow measurements in an extraction column

Heavy Fuel Oil Combustion Characteristics Evaluation in Various Swirling Flow Conditions

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