Firing blast furnace gas without support fuel in steel mill boilers

S. S. Hou; C. H. Chen; C. Y. Chang; C. W. Wu; J. J. Ou; T. H. Lin

doi:10.1016/j.enconman.2011.02.009

Firing blast furnace gas without support fuel in steel mill boilers

S. S. Hou, C. H. Chen, C. Y. Chang, C. W. Wu, J. J. Ou, T. H. Lin

Department of Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

49 Citations (Scopus)

Abstract

In this study, the combustion characteristics of firing blast furnace gas (BFG) individually or in combination with coke oven gas (COG) were investigated theoretically and experimentally. The theoretical results showed that at the same heat release rate under the operating conditions of stoichiometry, firing BFG individually had a greater amount of fuel gas volume flow rate, a smaller amount of air volume flow rate, and a lower adiabatic flame temperature than firing BFG with support fuel without preheating. Meanwhile, the volume flow rate of flue gas for the former was greater than the latter. The experimental results obtained from a co-firing of BFG and COG fueled-boiler in a steel company showed that whether at a higher or lower boiler load, with gradually decreasing the amount of COG supply, flame instability (lift-off and blow-out) did not occur and the rate of CO emission was very low. In addition, a decrease in the amount of COG supply brought about a great benefit to the reductions of both CO₂ and NO_x emissions.

Original language	English
Pages (from-to)	2758-2767
Number of pages	10
Journal	Energy Conversion and Management
Volume	52
Issue number	7
DOIs	https://doi.org/10.1016/j.enconman.2011.02.009
Publication status	Published - 2011 Jul

All Science Journal Classification (ASJC) codes

Renewable Energy, Sustainability and the Environment
Nuclear Energy and Engineering
Fuel Technology
Energy Engineering and Power Technology

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10.1016/j.enconman.2011.02.009

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title = "Firing blast furnace gas without support fuel in steel mill boilers",

abstract = "In this study, the combustion characteristics of firing blast furnace gas (BFG) individually or in combination with coke oven gas (COG) were investigated theoretically and experimentally. The theoretical results showed that at the same heat release rate under the operating conditions of stoichiometry, firing BFG individually had a greater amount of fuel gas volume flow rate, a smaller amount of air volume flow rate, and a lower adiabatic flame temperature than firing BFG with support fuel without preheating. Meanwhile, the volume flow rate of flue gas for the former was greater than the latter. The experimental results obtained from a co-firing of BFG and COG fueled-boiler in a steel company showed that whether at a higher or lower boiler load, with gradually decreasing the amount of COG supply, flame instability (lift-off and blow-out) did not occur and the rate of CO emission was very low. In addition, a decrease in the amount of COG supply brought about a great benefit to the reductions of both CO2 and NOx emissions.",

author = "Hou, {S. S.} and Chen, {C. H.} and Chang, {C. Y.} and Wu, {C. W.} and Ou, {J. J.} and Lin, {T. H.}",

note = "Funding Information: The authors greatly appreciate the financial support of this work by the China Steel Corporation and National Science Council, Taiwan, ROC. ",

year = "2011",

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doi = "10.1016/j.enconman.2011.02.009",

language = "English",

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AU - Hou, S. S.

AU - Chen, C. H.

AU - Chang, C. Y.

AU - Wu, C. W.

AU - Ou, J. J.

AU - Lin, T. H.

N1 - Funding Information: The authors greatly appreciate the financial support of this work by the China Steel Corporation and National Science Council, Taiwan, ROC.

PY - 2011/7

Y1 - 2011/7

N2 - In this study, the combustion characteristics of firing blast furnace gas (BFG) individually or in combination with coke oven gas (COG) were investigated theoretically and experimentally. The theoretical results showed that at the same heat release rate under the operating conditions of stoichiometry, firing BFG individually had a greater amount of fuel gas volume flow rate, a smaller amount of air volume flow rate, and a lower adiabatic flame temperature than firing BFG with support fuel without preheating. Meanwhile, the volume flow rate of flue gas for the former was greater than the latter. The experimental results obtained from a co-firing of BFG and COG fueled-boiler in a steel company showed that whether at a higher or lower boiler load, with gradually decreasing the amount of COG supply, flame instability (lift-off and blow-out) did not occur and the rate of CO emission was very low. In addition, a decrease in the amount of COG supply brought about a great benefit to the reductions of both CO2 and NOx emissions.

AB - In this study, the combustion characteristics of firing blast furnace gas (BFG) individually or in combination with coke oven gas (COG) were investigated theoretically and experimentally. The theoretical results showed that at the same heat release rate under the operating conditions of stoichiometry, firing BFG individually had a greater amount of fuel gas volume flow rate, a smaller amount of air volume flow rate, and a lower adiabatic flame temperature than firing BFG with support fuel without preheating. Meanwhile, the volume flow rate of flue gas for the former was greater than the latter. The experimental results obtained from a co-firing of BFG and COG fueled-boiler in a steel company showed that whether at a higher or lower boiler load, with gradually decreasing the amount of COG supply, flame instability (lift-off and blow-out) did not occur and the rate of CO emission was very low. In addition, a decrease in the amount of COG supply brought about a great benefit to the reductions of both CO2 and NOx emissions.

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Firing blast furnace gas without support fuel in steel mill boilers

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All Science Journal Classification (ASJC) codes

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