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Method of removing sulfur dioxide from flue gases, especially power plant flue gases and flue gases from garbage incinerator plants
Method of removing sulfur dioxide from flue gases, especially power plant flue gases and flue gases from garbage incinerator plants
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机译:从烟道气中去除二氧化硫的方法,特别是发电厂的烟道气和垃圾焚烧厂的烟道气
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摘要
SO.sub.2 containing flue gas is scrubbed with a scrubbing solution made up from ammonia water, untreated ammonium sulfate scrubbing solution recycled from the bottom of the scrubbing zone and ammonium sulfate solution formed by oxidizing a portion of the recovered ammonium sulfite scrubbing solution. The ammonium sulfite/ammonium sulfate mixing ratio is maintained at 15:1 to 3:1. The ammonium sulfite containing scrub liquid in combination with aqueous ammonia and an ammonium sulfate solution which has undergone oxidation can have an unusually high sulfur dioxide absorption capacity while minimizing the formation of aerosols.
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