电厂锅炉最佳氧量的研究

Research on Optimal Oxygen of Power Plant Boiler

由于能源价格的高涨且供应紧张,国内大部分电厂锅炉的实际燃烧煤种并不是设计煤种,原来设计的燃烧控制系统对实际煤种的适应普遍不佳,造成机组的供电煤耗上升。广东某电厂的660 MW机组在2010年实行最佳氧量自适应系统后,锅炉热效率从93.5%～94.0%上升到93.9%～94.5%,热效率提高0.4%～0.5%,相应降低供电煤耗约1.13 g/kWh。由于送风机、引风机电耗的降低,厂用电率下降约0.09%～0.25%,相应降低供电煤耗约0.5 g/kWh。

As rising energy prices and tight supply, the burning coal of most power plant boilers is not the design coal. The original design of the combustion control system cannot adapt to the actual coal, which leads to the increase in power supply coal consumption. Realizing the implementation of the optimal oxy- gen adaptive systems in 2010, the boiler thermal efficiency of 660 MW units of a power plant in Guang- dong Province increased from 93.5% ~94.0% to 93.9% -94.5%, thermal efficiency is from 0.4% to 0.5% , corresponding lower supply coal consumption is about 1.13 g/kWh. As the blower and draft fan power consumption are reduced, power consumption rate decreased about 0.09% to 0.25% , the corre- sponding lower supply coal consumption is about 0.5 g/kWh.