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    • 7. 发明授权
    • Process and apparatus for reducing nitrogen oxides and halogenated organic compounds in incineration plants
    • 在焚烧厂中还原氮氧化物和卤化有机化合物的方法和装置
    • US08765089B2
    • 2014-07-01
    • US12294098
    • 2007-03-08
    • Hans Hunsinger
    • Hans Hunsinger
    • B01D53/56
    • B01D53/60B01D53/68B01D53/70B01D2251/2062B01D2257/2045B01D2257/2064B01D2257/302B01D2257/404F23J2215/20F23J2215/301F23J2219/20Y02A50/2344Y02A50/2349
    • A process for reducing nitrogen oxides and halogenated organic compounds in an incineration plant having at least one combustion chamber. The process comprises separating out fly ash using a dust collector. Water is added to and hydrochloric acid separated out in a first acid-operated scrubber. Water and ammonia are added so as to separate out sulphur dioxide in a second neutral or slightly acid-operated scrubber so as to form ammonium sulphite, a portion of the ammonium sulphite thereby reacts with oxygen so as to form an aqueous ammonium sulphate/ammonium sulphite solution. The aqueous ammonium sulphate/ammonium sulphite solution is introduced into an oxygen-containing smoke gas downstream of a secondary gas introduction area so as to decompose the ammonium sulphate and ammonium sulphite so as to form ammonia and sulphur dioxide. Ammonia, oxygen and nitrogen oxides are reduced in the smoke gas by selective non-catalytic reduction so as to produce nitrogen and water, the chloride-containing fly ash in the smoke gas reacting with sulphur dioxide, water and oxygen so as to produce sulphates and hydrochloric acid.
    • 一种在具有至少一个燃烧室的焚烧装置中还原氮氧化物和卤化有机化合物的方法。 该方法包括使用集尘器分离出飞灰。 加入水并在第一酸洗涤器中分离出盐酸。 加入水和氨,以便在第二中性或轻酸酸洗涤器中分离出二氧化硫以形成亚硫酸铵,一部分亚硫酸铵由此与氧反应以形成硫酸铵/亚硫酸铵 解。 将硫酸铵/亚硫酸铵溶液引入二次气体导入区域下游的含氧烟气中,以分解硫酸铵和亚硫酸铵,以形成氨和二氧化硫。 氨,氧和氮氧化物通过选择性的非催化还原反应在烟气中减少以产生氮和水,烟气中的含氯化物飞灰与二氧化硫,水和氧反应,以产生硫酸盐和 盐酸。