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Field Experience With Mercury Emissions Control From Coal-fired Power Plants By Boiler Optimization

机译：通过锅炉优化控制燃煤电厂汞排放的现场经验

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This article presents an overview of testing performed at five coal-fired units to demonstrate the benefit of boiler optimization for low-mercury operation. Units with generating capacities of 110, 160, 250, 650, and 805 MW were tested. Boiler optimizations were performed at these units using available control parameters that have an impact on Hg emissions. Optimal control settings were tested, and the benefit of "low-Hg control settings" was quantified, considering the trade-off between mercury emissions reduction, the level of unburned carbon in the fly ash, and unit thermal efficiency. Optimization results indicated a range of stack mercury emissions reductions from approximately 30% to 70%, depending on the coal type, with modest impact on unit heat rate.
机译：本文概述了在五个燃煤机组上进行的测试，以证明优化锅炉对低汞运行的好处。测试了发电能力为110、160、250、650和805 MW的机组。在这些机组上，使用对汞排放有影响的可用控制参数对锅炉进行了优化。测试了最佳控制设置，并考虑了减少汞排放，粉煤灰中未燃烧碳的含量和单位热效率之间的权衡，对“低汞控制设置”的好处进行了量化。优化结果表明，根据煤种的不同，烟囱中汞排放量的减少范围从大约30％到70％，对单位热量的影响不大。

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