300MW循环流化床锅炉床温阶跃特性分析

• 作 者: 朱昊凌 赵明 赛俊聪 李恒阳 吴军汝
• 机 构: 昆明理工大学冶金与能源动力工程学院,云南电力试验研究院(集团)有限公司电力研究院,华北电力大学云南电网公司研究生工作站,
• 出 处: 电站系统工程
• 发表日期: 2014年06期
• 关键词: 循环流化床锅炉 给煤量 阶跃响应 二次风 床温控制系统 阶跃 一次风 密相区 滞后时间 稀相区

基于某厂8号循环流化床锅炉进行给煤量阶跃响应、一次风阶跃响应、二次风阶跃响应试验,分析了单因素阶跃响应对床温特性的影响。分析发现,在正常床温时给煤量阶跃,床温响应滞后时间大大缩短;分别对一次风量、二次风量阶跃响应时,床温响应呈现先下降后上升再下降的规律。所得研究结论可对同类型循环流化床锅炉运行、床温控制系统设计和了解床温动态特性提供参考。

Based on the No.8 circulating fluidized bed boiler of a plant, the step response of coal feed, the step response of primary wind and the step response of secondary air were carried out. The effect of single factor step response on bed temperature characteristics was analyzed. The analysis shows that the coal bed temperature jumps and the bed temperature response lags significantly shorten at the normal bed temperature. When the primary air volume and the secondary air volume step response, the bed temperature response first descends and then rises and then drops. The conclusions obtained can provide references for the operation of the same type of circulating fluidized bed boiler, bed temperature control system design and understanding of the dynamic characteristics of bed temperature.