The Experts below are selected from a list of 228 Experts worldwide ranked by ideXlab platform

Jae Wook Ko - One of the best experts on this subject based on the ideXlab platform.

  • Reduction of thermal radiation by steam in Flare stack System
    Korean Journal of Chemical Engineering, 2012
    Co-Authors: Byung Seok Ko, Jae Mo Yang, Dongil Shin, Chulhwan Park, Jae Wook Ko
    Abstract:

    A Flare System is installed for the enhancement of process safety, and the stable combustion is one of the most important elements. The main function of the Flare System is the combustion of the flammable or toxic materials into non-hazardous materials, but combustion heat is released from a Flare System. In this study, the effect of the external and internal steam injections in the Flare stack on the reduction of the thermal radiation was investigated. The ignition possibility by the change of steam amount and the effect of the steam on the thermal radiation were also analyzed by using consequence analysis software. In case of thermal emission of oil refinery plants through improved steam injection, the injection of 120% steam rather than the conventional method enabled the reduction of the Flare stack height. It could reduce the height of Flare stack by 20%.

  • quantitative analysis of thermal radiation in Flare stack
    Journal of the Korean Institute of Gas, 2010
    Co-Authors: Sangyong Jung, Chulhwan Park, Jae Wook Ko
    Abstract:

    The most important element for improving the process safety that occurs from the Flare System installed to convert into safe materials by burning the inflammable or toxic gases within the process and this is specified in the API 521 Code so that the radiation does not cause a risk factor. The flames that occur from the Flare stack holds the shape of jet fire due to the pressure and flow velocity of discharge gas. This study has identified the shape of flames by using the Chamberlain Model rather than the API 521 Code method, analyzing the radiation due to this.

Anders Andreasen - One of the best experts on this subject based on the ideXlab platform.

  • Revealing hidden debottlenecking potential in Flare Systems on offshore facilities using dynamic simulations – A preliminary investigation
    Journal of Loss Prevention in The Process Industries, 2020
    Co-Authors: Ana Xiao Outomuro Somozas, Rudi P. Nielsen, Marco Maschietti, Anders Andreasen
    Abstract:

    Abstract Three Flare Systems are modeled and total plant depressurization is investigated using dynamic simulations in order to access the debottlenecking potential. Usually, steady-state simulation of the Flare network is used for sizing and rating of the Flare System. By using dynamic simulations, effects from line packing in the Flare System can be studied. The results show that peak flow during a dynamic simulations is significantly lower than the peak flow used in a steady-state case. The three Systems investigated span a wide range in Flare System size, both in terms of number of process segments disposing into the Flare network, in terms of peak design rate, the Flare network pipe dimensions and total hold-up volume. Generally, it is observed that the larger the Flare System, the larger debottlenecking potential.

  • Revealing Hidden Debottlenecking Potential in Flare Systems on Offshore Facilities Using Dynamic Simulations -- a Preliminary Investigation
    2020
    Co-Authors: Ana Xiao Outomuro Somozas, Rudi P. Nielsen, Marco Maschietti, Anders Andreasen
    Abstract:

    Three Flare Systems are modeled and total plant depressurization is investigated using dynamic simulations in order to access the debottlenecking potential. Usually steady-state simulation of the Flare network is used for sizing and rating of the Flare System. By using dynamic simulations effects from line packing in the Flare System can be studied. The results show that peak flow during a dynamic simulations is significantly lower than the peak flow used in a steady-state case. <br>The three Systems investigated span a wide range in Flare System size, both in terms of number of process segments disposing into the Flare network, in terms of peak design rate and the Flare network pipe dimensions and total hold-up volume. Generally, it is observed that the larger the Flare System, the larger debottlenecking potential.

Maria Do Carmo Nicoletti - One of the best experts on this subject based on the ideXlab platform.

  • solar Flare detection System based on tolerance near sets in a gpu cuda framework
    Knowledge Based Systems, 2014
    Co-Authors: G Poli, E Llapa, J R Cecatto, J H Saito, James F Peters, Sheela Ramanna, Maria Do Carmo Nicoletti
    Abstract:

    This article presents a unique application of tolerance near sets (TNS) for detecting solar Flare events in solar images acquired using radio astronomy techniques. In radio astronomy (RA) applications, the interferometric array processing of data streams presents algorithmic and response time challenges as well as a high volume of data. The radio interferometer is an RA instrument composed of an array of antennas. Radio signals emitted by a celestial object are captured by the antennas and are subsequently processed in such a way that each pair of antennas produces correlated data. The overall correlated data is then accumulated and, after an integration period, the spectral image of the observed object is obtained. The process of deconvolution of the spectral image produces the desired spatial image of the celestial object. The proposed solar Flare detection System is embedded in a computational platform framework suitable for dealing with huge volumes of data, based on a cluster of CPU-GPU pairs. The experimental results presented in the paper include comparison of the TNS-based algorithm (implemented as the SOL-Flare System) with the K-means algorithm using significant samples of test images to validate the detection System. The performances of both Systems are comparatively analyzed using Receiver Operating Characteristic (ROC) curves. The images used in the experiments were selected from a data repository produced by the Nobeyama Radioheliograph, in Japan, during the years 2004 up to 2013. The main contribution of the article is a novel approach to solar Flare detection in a GPU-CUDA framework.

Dang Wen-yi - One of the best experts on this subject based on the ideXlab platform.

  • Study on the Design Pressure for Water-sealed Drum in Refinery Flare System
    China Safety Science Journal, 2010
    Co-Authors: Dang Wen-yi
    Abstract:

    A water-sealed drum is the most important facility for the prevention of back-fire and explosion in the refinery Flare System,and its integrity should be properly designed to make sure it will not be destroyed during back-fire and explosion.In this study,a 3-D model of water-sealed drum was built,and a numerical simulation with FLACS software was utilized in the simulation of gas explosion in the drum.The results show that,in the confined space,pressure caused by the hydrocarbon gas explosion(such as methane and propane) is 7-8 times of the initial gas pressure(Absolute pressure),and pressure caused by hydrogen explosion is 10-12 times of the initial gas pressure(Absolute pressure).Therefore,the design pressure for water-sealed drum is suggested not to be less than 1.0 MPa(Absolute pressure) in hydrogen-rich gas discharge System and not to be less than 0.7 MPa(Absolute pressure) in hydrocarbon gas discharge System.

Chulhwan Park - One of the best experts on this subject based on the ideXlab platform.

  • Reduction of thermal radiation by steam in Flare stack System
    Korean Journal of Chemical Engineering, 2012
    Co-Authors: Byung Seok Ko, Jae Mo Yang, Dongil Shin, Chulhwan Park, Jae Wook Ko
    Abstract:

    A Flare System is installed for the enhancement of process safety, and the stable combustion is one of the most important elements. The main function of the Flare System is the combustion of the flammable or toxic materials into non-hazardous materials, but combustion heat is released from a Flare System. In this study, the effect of the external and internal steam injections in the Flare stack on the reduction of the thermal radiation was investigated. The ignition possibility by the change of steam amount and the effect of the steam on the thermal radiation were also analyzed by using consequence analysis software. In case of thermal emission of oil refinery plants through improved steam injection, the injection of 120% steam rather than the conventional method enabled the reduction of the Flare stack height. It could reduce the height of Flare stack by 20%.

  • quantitative analysis of thermal radiation in Flare stack
    Journal of the Korean Institute of Gas, 2010
    Co-Authors: Sangyong Jung, Chulhwan Park, Jae Wook Ko
    Abstract:

    The most important element for improving the process safety that occurs from the Flare System installed to convert into safe materials by burning the inflammable or toxic gases within the process and this is specified in the API 521 Code so that the radiation does not cause a risk factor. The flames that occur from the Flare stack holds the shape of jet fire due to the pressure and flow velocity of discharge gas. This study has identified the shape of flames by using the Chamberlain Model rather than the API 521 Code method, analyzing the radiation due to this.