The Structural Design of and Experimental Research on a Coke Oven Gas Burner

Mingrui Geng, Suyi Jin and Denghui Wang ()
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Mingrui Geng: School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an 710049, China
Suyi Jin: School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an 710049, China
Denghui Wang: School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an 710049, China

Sustainability, 2024, vol. 16, issue 10, 1-25

Abstract: A novel low-NO x burner was proposed in this study to achieve the stable and clean combustion of low- and medium-calorific-value gas and promote energy sustainability, and the influence of the gas pipe structure on the burner’s characteristics was studied with coke oven gas as a fuel. A 40 kW burner test bench was established to conduct cold-state experiments to investigate the influences of the gas pipe structure on the aerodynamic characteristics of the burner. We performed numerical simulations on both a 40 kW burner and a 14 MW prototype burner to investigate the thermal performance of the burners and their impact on low NO x emissions. The experimental results showed that increasing the deflection angle of the gas pipe nozzle direction relative to the circumferential tangent direction, the high-velocity zone and the high-concentration zone of the flow field move towards the central axis. Increasing the bending angle of gas pipe nozzle direction relative to the axis direction caused the high-velocity zone and the high-concentration zone to move upstream direction of the jet. The simulation reveals that the NO concentration at the exit cross-section of the combustion chamber of the 14 MW prototype burner is 17.00 mg/m 3 (with 3.5% oxygen content). A recommended design structure of the burner was proposed, with a deflection angle of 0°and a bending angle of 0° for the No. 3 gas pipe, and a deflection angle of 15° and a bending angle of 30° for the No. 4 gas pipe.

Keywords: gas burner; low calorific value gas; coke oven gas; NO x; numerical simulation (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2024
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