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Analysis on bed temperature operational characteristics of 450 t/h CFB boiler
Author(s): 
Pages: 49-52
Year: Issue:  1
Journal: ELECTRIC POWER

Keyword:  循环流化床锅炉床温运行控制;
Abstract: 针对目前循环流化床锅炉床温控制水平较低,难以投入自动控制的问题,基于某电厂450t/h循环流化床锅炉的运行数据和运行实例,较全面地分析了给煤、一次风、氧量、床层高度、负荷等主要因素对床温的影响.分析发现:给煤调节床温具有滞后性,煤质和煤粒径对床温也有一定影响;不同运行工况下一次风对床温可能有不同影响;氧气浓度变化可反映炉内的燃烧工况;密相区料层厚度变化会带来床温变化;床温只是影响负荷的主要因素之一.所得结论可对循环流化床锅炉运行、床温控制系统的设计和了解床温调节规律提供参考.
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