公开(公告)号：US20130317274A1

公开(公告)日：2013-11-28

申请号：US13901533

申请日：2013-05-23

申请人： Maohong Fan ,  Morris D. Argyle ,  Mustafa O.M. Sharrad

发明人： Maohong Fan ,  Morris D. Argyle ,  Mustafa O.M. Sharrad

IPC分类号： A62D3/36

CPC分类号： A62D3/36 ,  A62D3/33 ,  A62D2101/08 ,  A62D2101/24 ,  A62D2101/43

摘要： A method for removing elements, including heavy metals, from fly ash and from fly ash resulting from removal of SOx/NOx from flue gas using Na2CO3/NaHCO3/trona, is described. An aqueous suspension of the fly ash and/or a solution of the leachate from the fly ash is treated with dissolved ferrous compounds, such as FeSO4.7H2O and/or FeCl2.4H2O, at a chosen initial acidic pH, and the precipitation of the ferrous ions as the solution basifies sequesters the trace elements.

摘要翻译： 描述了使用Na 2 CO 3 / NaHCO 3 /天然碱从烟灰中除去来自飞灰和从烟道气中除去SO x / NO x产生的飞灰的元素（包括重金属）的方法。 在所选择的初始酸性pH下，用溶解的亚铁化合物如FeSO 4·7H 2 O和/或FeCl 2·4H 2 O处理飞灰和/或来自飞灰的渗滤液的溶液的水悬浮液， 作为溶液的亚铁离子可以螯合微量元素。