摘要
输入 /损失技术 ,是一项独一无二的技术 ,它通过对燃料及其渗漏的流动、燃料化学性质、燃料热值和热效率的分析 ,为全面理解电厂热力过程创造了条件。低位 (净 )发热量与高位 (总 )发热量和热效率可以确定 ,而直接的燃料流量或排放物流量的测量没有给定。鉴于打算将其用于燃煤电厂 ,输入 /损失技术是根据透平循环的能量流动和锅炉运行特性 ,通过迭代技术与发散测量方法来确定煤的流动与燃烧热值的。发散测量方法 ,是以多维最小化技术来校正的。多维最小化技术对于给定的煤种可以校正燃料的特性参数在小于±2 %的标准误差范围内 ,校正后的结果可以证明是基本稳定的。典型的热值可以在 0 .5 %的精确度下进行预测。它是为在线监测器而设计的。这种方法已经被 1 2 0 0次元素分析和 1 0年的指导性测试结果广泛验证。图4表 3参 2
The Input/Loss Method is a unique process which allows for complete thermal understanding a power plant through explicit determinations of fuel and effluent flows, fuel chemistry, fuel heating (calorific) value and thermal efficiency. Lower(net) or higher (gross) heating values and efficiencies are determined. Direct measurements of fuel or effluent flows are not made. As it is intended for coal fired power plants, the Input/Loss Method determines coal flow and as fired heating value based on turbine cycle energy flows, boiler performance through iterative techniques and emission measurements. Emission measurements are corrected using Multi Dimension Minimization techniques which corrects against a fuel characterization parameter, proven by this work to be essentially constant for a given coal Rank with standard deviations less than ±0.2%. Typical heating values can be predicted within 0.5% accuracy. It is designed for on line monitoring. The Method has been extensively verified through 1200 ultimate analyses and 10 years of directed testing efforts.
出处
《动力工程》
CSCD
2000年第5期847-862,共16页
Power Engineering
