Cold experimental studies of flow field in the swirling coal combustion device

[摘要] In this paper, the influence of different geometric and operation parameters on the flow field in the swirling coal combustion device were studied, like the tuyere positions, the air supply forms and the air velocity, for the particles velocity distribution in the D300 furnace. By comparing the distribution of particles in the four inlet modes of 0 °, 10 °, 16 ° and 22 °, the tangential velocity distribution of particles is more symmetrical along the radial direction under the condition of 0° air inlet. Tangential velocity is smaller, increase the residence time of pulverized coal in the swirling coal combustion device. The residence time of fuel particles also can be prolonged which is beneficial to increase the combustion efficiency of the swirling coal combustion device. And provide the basis for the selection of the swirling coal combustion device in hot experiment.

[发布机构] School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing, China^1;School of Energy and Environment Engineering, University of Science and Technology Beijing, Beijing, China^2

[效力级别] 生态环境科学

[关键词] Air velocities;Combustion efficiencies;Distribution of particles;Operation parameters;Pulverized coals;Radial direction;Swirling coal combustion;Tangential velocities