THERMAL SCIENCE

International Scientific Journal

Fengsheng Qi

,

Zisong Wang

,

Baokuan Li

,

Zhu He

,

Jakov Baleta

,

Milan Vujanović

NUMERICAL STUDY ON CHARACTERISTICS OF COMBUSTION AND POLLUTANT FORMATION IN A REHEATING FURNACE

ABSTRACT
Energy consumption of fuel-fired industrial furnace accounts for about 23% of the national total energy consumption every year in China. Meanwhile, the reduction of combustion-generated pollutants in furnace has become very important due to the stringent environment laws and policy introduced in the recent years. It is therefore a great challenge for the researchers to simultaneously enhance the fuel efficiency of the furnace while controlling the pollution emission. In this study, a transient 3-D mathematical combustion model coupled with heat transfer and pollution formation model of a walking-beam-type reheating furnace has been developed to simulate the essential combustion, and pollution distribution in the furnace. Based on this model, considering nitrogen oxides formation mechanism, sensitivity study has been carried out to investigate the influence of fuel flow rate, air-fuel ratio on the resultant concentration of nitrogen oxides in the flue gas. The results of present study provide valuable information for improving the thermal efficiency and pollutant control of reheating furnace.
KEYWORDS
energy consumption, reheating furnace, combustion, pollutant formation, nitrogen oxides emissions
PAPER SUBMITTED: 2018-01-18
PAPER REVISED: 2018-05-15
PAPER ACCEPTED: 2018-05-25
PUBLISHED ONLINE: 2018-09-29
DOI REFERENCE: https://doi.org/10.2298/TSCI180118277Q
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2018, VOLUME 22, ISSUE Issue 5, PAGES [2103 - 2112]
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Numerical study on characteristics of combustion and pollutant formation in a reheating furnace

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