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    • 2. 发明授权
    • 생활폐기물 소각 바닥재의 가속탄산화 반응으로 캡슐레이션 효과에 의한 중금속 성분들을 안정화하는 방법
    • 用于通过加速碳酸化处理固体废物焚烧炉底部的封闭效应来稳定重金属的方法
    • KR101377067B1
    • 2014-03-27
    • KR1020130152232
    • 2013-12-09
    • 한국지질자원연구원(주)뉴그린
    • 안지환엄남일남성영계상범김형순
    • A62D3/37B09B3/00A62D101/43
    • Y02W30/20A62D3/30A62D2101/43B09B3/0025
    • The present invention provides a heavy metal stabilization method by the carbon dioxide immobilization and encapsulation according to an accelerated carbonation reaction in a state of low moisture content in bottom ash from incineration of municipal sold waste. The heavy metal stabilization method in the present invention comprises the steps of: incinerating municipal solid waste and then generating incineration bottom ash; mixing the incineration bottom ash with water in a solid-liquid ratio(water/bottom ash, dm^3/kg) of 0.3; and performing an accelerated carbonation reaction by injecting 30 vol% carbon dioxide gas at a speed of 0.5-2 L/min at a reaction temperature of 20-40°C for 20-240 min without mixing a reducing agent to the incineration bottom ash mixed with water. Through the method, provided is a technique enabling the recycling of the whole bottom ash by performing the high-speed carbonation of fine powder bottom ash in a particle diameter of 0.15 mm or less which has become a problem in the recycling of the whole bottom ash. The stabilization method for heavy metals in bottom ash from incineration of municipal solid waste according to the present invention, is capable of recycling incineration bottom ash safely by stabilizing heavy meals due to the recovery of CO_2 in incineration bottom ash having separated particle sizes through a carbonation reaction and due to the encapsulation by high-speed carbonation, thereby being an environmentally-friendly method. In addition, the method is capable of stabilizing and recycling incineration bottom ash without using a reducing agent separately. Through the method, provided is a technique enabling the recycling of the whole bottom ash by performing the high-speed carbonation of fine powder bottom ash in a particle diameter of 0.15 mm or less which has become a problem in the recycling of the whole bottom ash. [Reference numerals] (AA) Incinerating municipal sold waste; (BB) Selecting bottom ash from incineration ash; (CC) Separating the particle size of the selected bottom ash; (DD) Mixing water with bottom ash of 0.15 mm or less; (EE) Injecting the mixed bottom ash into a high-speed carbonation reactor; (FF) Injecting carbon dioxide for carbonation reaction
    • 本发明提供了一种重金属稳定化方法,其通过二氧化碳固定和封装,根据加速的碳酸化反应,在底灰中的水分含量低的情况下,市政废弃物的焚烧。 本发明的重金属稳定化方法包括以下步骤:焚烧城市固体废物,然后产生焚烧底灰; 将焚烧底灰与固体 - 液体比(水/底灰,dm 3 / kg)为0.3的水混合; 并在20〜40℃的反应温度下以0.5-2L / min的速度注入30体积%的二氧化碳20-240分钟,而不将还原剂混合到焚化炉底灰混合物中进行加速碳酸化反应 与水。 通过该方法,提供了通过进行直径为0.15mm以下的细粉末底灰的高速碳酸化,能够回收整个底灰的技术,这已经成为整个底灰回收的问题 。 根据本发明的城市固体废物焚烧的底灰中的重金属的稳定化方法能够通过稳定重食而安全地回收焚烧底灰,这是由于通过碳酸化分离的粒度的焚烧底灰中CO_2的回收 反应,并且由于通过高速碳酸化的包封,因此是环境友好的方法。 此外,该方法能够分别稳定和回收焚烧底灰而不使用还原剂。 通过该方法,提供了通过进行直径为0.15mm以下的细粉末底灰的高速碳酸化,能够使整个底灰再循环的技术,这已成为整个底灰回收的问题 。 (附图标记)(AA)焚烧市政废弃物; (BB)从焚烧灰中选择底灰; (CC)分离所选底灰的粒度; (DD)混合水与0.15mm以下的底灰; (EE)将混合的底灰注入高速碳酸化反应器; (FF)注入二氧化碳进行碳酸化反应