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MINIMIZING FGD COSTS

机译:最小化FGD成本

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With nearly every utility in the United States adding or upgrading their FGD system it is crucial that the utilities understand key issues in reducing the cost of these new systems. At the same time utilities are also facing increased pressure to eliminate wastewater discharge and to move toward a zero emission or near zero emission facility. This paper discusses the water balance impacts of a wet FGD system and ways to minimize the overall project cost of the FGD system and new Wastewater treatment facilities. The addition of a wet FGD system can significantly affect the water balance of the facility. In many cases significant new Wastewater treatment systems may need to be installed to handle the FGD blowdown. Major topics include: 1) Plant water balance impacts with a new wet FGD system at an existing plant. 2) Impact of producing saleable grade gypsum versus land filling gypsum. 3) Zero liquid discharge technologies applicable for treating FGD blowdown. 4) Minimizing quantity of FGD blowdown by using higher grade materials of construction such as 317LMN, Duplex 2205, Duplex 255, 6% Moly, Hastelloy C, etc. 5) Impact of switching to a higher or lower chloride content fuel. The cost information section of the paper will discuss the trade off between the increased costs of the FGD system materials of construction verses building a larger wastewater treatment facility. Comparative analysis of these costs for bituminous, sub-bituminous, and lignite fuels will be included.
机译:在美国在美国添加或升级其FGD系统的几乎每个实用程序都至关重要,即公用事业公司在降低这些新系统的成本时理解关键问题。同时,公用事业也面临着消除废水排放的压力,并朝向零发射或接近零排放设施。本文讨论了湿式FGD系统的水平衡影响以及最大限度地减少FGD系统的整体项目成本和新的废水处理设施。添加湿FGD系统可以显着影响设施的水平衡。在许多情况下,可能需要安装重要的新污水处理系统以处理FGD排污。主要主题包括:1)植物水平对现有植物的新湿法FGD系统影响。 2)生产可销售级石膏与土地填充石膏的影响。 3)适用于治疗FGD排污的零液体放电技术。 4)通过使用较高级的施工材料最小化FGD排污量,例如317LMN,双相2205,双相255,6%摩尔,哈氏合金C等。5)切换到更高或更低的氯化物含量燃料的影响。本文的成本信息部分将讨论建筑经文的FGD系统材料成本增加之间的折衷,构建更大的废水处理设施。将包括沥青,亚沥青和褐煤燃料的这些成本的比较分析。

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  • 来源
    《COAL-GEN》|2006年||共47页
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  • 作者

    Bryan D. Hansen;

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  • 原文格式 PDF
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  • 中图分类 TM611-53;
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