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    • 1. 发明授权
    • Flue gas desulfurization process
    • 烟气脱硫工艺
    • US5034204A
    • 1991-07-23
    • US454855
    • 1989-12-22
    • Robert E. MoserJohn M. BurkeDavid R. Owens
    • Robert E. MoserJohn M. BurkeDavid R. Owens
    • B01D53/50
    • B01D53/501
    • A wet, calcium-based, flue gas desulfurization process for reliably and cost effectively removing sulfur dioxide from the flue gas generated by the combustion of fossil flues containing sulfur includes the step of contacting the combustion flue gas preferably as a part of the scrubbing liquor, with an aqueous solution containing formate ions and a dissolved calcium concentration reduction agent. The latter reduces the dissolved calcium concentration present in the flue gas which, in turn reduces the coprecipitation and loss of formate within and from the system. Also, by contacting the flue gas with an aqueous solution comprising formate and thiosulfate ions, the formate coprecipitation within the system is reduced independent of the calcium concentration level within the system.
    • 用于可靠且成本有效地从由硫化石燃料的燃烧产生的烟道气中除去二氧化硫的湿的,基于钙的烟道气脱硫方法包括将燃烧烟气优选作为洗涤液的一部分接触的步骤, 与含有甲酸根离子的水溶液和溶解的钙浓度还原剂。 后者减少了烟道气中溶解的钙浓度,从而降低了系统内部和从系统中甲酸盐的共沉淀和损失。 此外,通过使烟道气与包含甲酸盐和硫代硫酸根离子的水溶液接触,系统内的甲酸盐共沉淀降低,而与系统内的钙浓度水平无关。