有侧吹风环流料封阀水平孔口流动阻力特性

• 作 者: 王擎 孙东红 孙键 骆仲泱 岑可法 秦裕琨
• 机 构: 东北电力学院动力系!吉林132012,东北电力学院动力系!吉林132012,东北电力学院动力系!吉林132012,浙江大学热能工程研究所!杭州310027,浙江大学热能工程研究所!杭州310027,哈
• 出 处: 化工学报
• 发表日期: 2000年05期
• 关键词: 环流料封阀 孔口 侧吹风 流量系数 loop seal orifice side aeration air discharge coefficient

By using a cold CFB model, the effect of horizontal orifice areas of Loop Seal with side aeration air on operational property was studied in detail.The results showed that the horizontal orifice area had a great effect on its stable operation and regulation of the recirculation rate.Under a certain range of the horizontal orifice area,the stable flow of solid particles through Loop Seal could be obtained and recirculation rate of solid particles could be well regulated and controlled through changing external aeration.The flow resistance properties across the horizontal orifice were given and an empirical equation of the pressure drop of horizontal orifice and solid circulating flow rate was proposed and a new orifice discharge coefficient was defined.The expression’s were in good agreement with the experimental data.

By using a cold CFB model, the effect of horizontal orifice areas of Loop Seal with side aeration air on operational property was studied in detail. The results showed that the horizontal orifice area had a great effect on its stable operation and regulation of the recirculation rate .Under a certain range of the horizontal orifice area, the stable flow of solid particles through Loop Seal could be obtained and recirculation rate of solid particles could be well regulated and controlled through changing external aeration. Flow rate properties across the horizontal orifice were and an empirical equation of the pressure drop of horizontal orifice and solid circulating flow rate was proposed and a new orifice discharge coefficient was defined. The expression’s were in good agreement with the experimental data.