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11 results on '"Chen, Zhengchun"'

7. Analysis of flame characteristics of low calorific value gas diffusion combustion under the action of thermal dynamics

Author

Zhenlin Li, Chen Zhengchun, Bo Liu, Jinqiao He, and Chun Leng

Subjects
Materials science, 020209 energy, General Chemical Engineering, Flow (psychology), Diffusion flame, General Physics and Astronomy, Energy Engineering and Power Technology, 02 engineering and technology, General Chemistry, Mechanics, Thermal dynamics, Combustion, 01 natural sciences, Action (physics), 010305 fluids & plasmas, Fuel Technology, Modeling and Simulation, 0103 physical sciences, 0202 electrical engineering, electronic engineering, information engineering, Curve fitting, Gaseous diffusion, Heat of combustion
Abstract

In this paper, the flame characteristics of co-axial concomitant flow diffusion combustion of low calorific value gas under the action of thermal dynamics are studied. Based on Fluent software, the...

Published
2020
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11. Combustion characteristics of blast furnace gas in porous media burner

Author

Xin Jiang, Chen Zhengchun, Chun Leng, and Jinqiao He

Subjects
Materials science, 020209 energy, Nozzle, Flame structure, Energy Engineering and Power Technology, 02 engineering and technology, Combustion, Industrial and Manufacturing Engineering, law.invention, Ignition system, 020401 chemical engineering, law, 0202 electrical engineering, electronic engineering, information engineering, Combustor, Limiting oxygen concentration, 0204 chemical engineering, Composite material, Porous medium, Blast furnace gas
Abstract

This paper studied the combustion of blast furnace gas in a porous media burner. A numerical model method was established to analyze the combustion characteristics of blast furnace gas and solved by using the finite volume method. The temperature distribution, the position of the ignition, the flame structure, the recirculation zone and the concentration of the fuel were analyzed in the furnace. It was found that as increase of the distance between the porous body and the burner inlet, the temperature of the gas and the flame length increased and then decreased. When the porous media was located at 0.14 m in the burner, the peak temperature of the smoke gas was 1598 K at 0.36 m and the flame length was up to 0.41 m. With the porous media away from the burner nozzle, the ignition position was first away from the nozzle and then stabilize. The heat recirculation area increased and then stabilized. The position of the ignition was stable at 0.11 m. The flame length and flame radiation surface were wider and the oxygen concentration was the lowest at the exit, only 0.0043, when porous media was at 0.14 m.

Published
2019
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