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首页> 外文会议>Power plant pollutant control "MEGA" symposium >Swinging and Low Load Operation: Impacts on WFGD Chemistry, Waste Water Effluent Management and Air Emissions
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Swinging and Low Load Operation: Impacts on WFGD Chemistry, Waste Water Effluent Management and Air Emissions

机译：摆动和低负荷运行：对WFGD化学，废水排放管理和空气排放的影响

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摘要

While the industry is aware that variations in both boiler load and fuel have impacts on combustion processes, recent observations have shown that these changes also have significant effects upon limestone forced oxidation (LSFO) wet flue gas desulfurization (WFGD) unit operations and their associated effluents and emissions. Some WFGD units, when subjected to load swing, exhibit a much different chemistry than when run under steady conditions, particularly mercury and selenium liquid-solid phase partitioning, and the oxidative potential of the slurry. Such changes in chemistry must be considered as part of waste water management strategies. Concurrently, significant changes in WFGD chemistry associated with operational load swings can transiently result in increased mercury emissions if left unchecked. Mitigation strategies are under development to address the observed impacts that both low and swinging load operations have on WFGD chemistry, oxidation reduction potential (ORP), unit operation, mercury emissions and effluent composition.
机译：尽管行业意识到锅炉负载和燃料的变化都会影响燃烧过程，但最近的观察表明，这些变化也对石灰石强制氧化（LSFO）湿法烟气脱硫（WFGD）装置的运行及其相关废水产生了重大影响。和排放。某些WFGD装置在承受负荷摆幅时，其化学性质与在稳定条件下运行时有很大不同，特别是汞和硒的液相固相分配以及浆液的氧化电位。这种化学变化必须视为废水管理策略的一部分。同时，如果不加以控制，与运行中的负荷波动相关的WFGD化学物质的重大变化可能会暂时导致汞排放量的增加。正在开发缓解策略，以解决低负荷和摆动负荷操作对WFGD化学，氧化还原电位（ORP），单元操作，汞排放和废水成分的影响。

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