Frontiers of Chemical Science and Engineering

, Volume 10, Issue 4, pp 459–471 | Cite as

Combustion mechanism development and CFD simulation for the prediction of soot emission during flaring

  • Anan Wang
  • Helen H. Lou
  • Daniel Chen
  • Anfeng Yu
  • Wenyi Dang
  • Xianchang Li
  • Christopher Martin
  • Vijaya Damodara
  • Ajit Patki
Review Article
  • 83 Downloads

Abstract

Industrial Flares are important safety devices to burn off the unwanted gas during process startup, shutdown, or upset. However, flaring, especially the associated smoke, is a symbol of emissions from refineries, oil gas fields, and chemical processing plants. How to simultaneously achieve high combustion efficiency (CE) and low soot emission is an important issue. Soot emissions are influenced by many factors. Flare operators tend to over-steam or over-air to suppress smoke, which results in low CE. How to achieve optimal flare performance remains a question to the industry and the regulatory agencies. In this paper, regulations in the US regarding flaring were reviewed. In order to determine the optimal operating window for the flare, different combustion mechanisms related to soot emissions were summarized. A new combustion mechanism (Vsoot) for predicting soot emissions was developed and validated against experimental data. Computational fluid dynamic (CFD) models combined with Vsoot combustion mechanism were developed to simulate the flaring events. It was observed that simulation results agree well with experimental data.

Keywords

flare soot emission combustion mechanism CFD simulation 

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Copyright information

© Higher Education Press and Springer-Verlag Berlin Heidelberg 2016

Authors and Affiliations

  • Anan Wang
    • 1
  • Helen H. Lou
    • 1
  • Daniel Chen
    • 1
  • Anfeng Yu
    • 2
  • Wenyi Dang
    • 2
  • Xianchang Li
    • 3
  • Christopher Martin
    • 4
  • Vijaya Damodara
    • 1
  • Ajit Patki
    • 3
  1. 1.Dan F. Smith Department of Chemical EngineeringLamar UniversityBeaumontUSA
  2. 2.SINOPEC Safety Engineering InstituteQingdaoChina
  3. 3.Department of Mechanical EngineeringLamar UniversityBeaumontUSA
  4. 4.Department of ChemistryLamar UniversityBeaumontUSA

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