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Numerical investigation for combustion characteristics of vacuum residue (VR) in a test furnace SCIE SCOPUS

Title
Numerical investigation for combustion characteristics of vacuum residue (VR) in a test furnace
Authors
Sreedhara, SHuh, KYPark, H
Date Issued
2007-09
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Abstract
It has become inevitable to search for alternative fuels due to current worldwide energy crisis. In this paper combustion characteristics of vacuum residue (VR) is investigated numerically against experimental data in typical operating conditions of a furnace. Heat release reaction is modeled as sequential steps of devolatilization, simplified gas phase reaction and char oxidation as for pulverized coal. Thermal and fuel NO are predicted by the conditional moment closure (CMC) method for estimation of elementary reaction rates. It turns out that Sauter mean diameter (SMD) of VR droplets is a crucial parameter for better combustion efficiency and lower NO. Reasonable agreement is achieved for spatial distributions of major species, temperature and NO for all test cases with different fuel and steam flow rates. (c) 2006 Elsevier Ltd. All rights reserved.
Keywords
vacuum residue; turbulent combustion; conditional moment closure; NOx; KINETICS
URI
https://oasis.postech.ac.kr/handle/2014.oak/23233
DOI
10.1016/j.energy.2006.11.009
ISSN
0360-5442
Article Type
Article
Citation
ENERGY, vol. 32, no. 9, page. 1690 - 1697, 2007-09
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허강열HUH, KANG YUL
Dept of Mechanical Enginrg
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