Analysis of Influence of Nozzle Structure on Flow Field in Pulverized Coal Gasifier | Zendy

Xianbo Gao | Zendy; Xiaoguang Yang | Zendy; Fei Guo | Zendy; Wenbo Lv | Zendy; Zhipeng Jiang | Zendy; Yingai Jin | Zendy

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Analysis of Influence of Nozzle Structure on Flow Field in Pulverized Coal Gasifier

Author(s) -

Xianbo Gao,

Xiaoguang Yang,

Fei Guo,

Wenbo Lv,

Zhipeng Jiang,

Yingai Jin

Publication year - 2020

Publication title -

iop conference series materials science and engineering

Language(s) - English

Resource type - Journals

eISSN - 1757-899X

pISSN - 1757-8981

DOI - 10.1088/1757-899x/768/4/042045

Subject(s) - wood gas generator , pulverized coal fired boiler , nozzle , airflow , mechanics , flow (mathematics) , coal , diffusion , materials science , vector field , engineering , environmental science , mechanical engineering , waste management , physics , thermodynamics

The three-dimensional model of the pulverized coal gasifier was established, and the internal flow field of the pulverized coal gasifier was simulated by CFD software. The variation of the velocity field and vector field inside the gasifier was observed when the angle of the guide vane in the nozzle structure gradually increased. Through the comparative analysis of the simulation results of the angle between the guide vane and the axis of 20°, 30°, 40° and 50°, the following conclusions can be drawn: as the angle of the guide vane increases, the lateral diffusion capacity of the airflow at the nozzle exit increases, and the longitudinal diffusion capability decreases. Therefore, after comprehensive consideration and contact with the actual gasifier size, this paper considers that the angle between the blade and the axis is optimally 40°-45°.

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