公开(公告)号：EP0466803B1

公开(公告)日：1994-06-15

申请号：EP90906415.6

申请日：1990-04-02

申请人： ABB FLÄKT AB

发明人： CARLSSON, Kurt

IPC分类号： B01D53/34

CPC分类号： B09B3/00 ,  B01D53/34

摘要： For cleaning flue gas formed on the incineration of refuse, for example domestic refuse, and containing particulate impurities; gaseous organic impurities, such as aromatic chlorine compounds; gaseous inorganic and acidifying impurities, e.g. hydrogen chloride, sulphur dioxide, and nitrogen oxides; and gaseous trace elements, such as heavy metals, the gas is cleaned of its particulate impurities in a separation step (52). Then, the flue gas is cleaned of its gaseous inorganic and acidifying impurities in at least one gas washing step (54a, 54b). Before the separation step (52), the flue gas is brought into contact with one or more substances reacting with the gaseous trace elements and supplied in the form of a dry powder or fine liquid droplets, and/or an adsorption material reacting with the gaseous organic impurities, for transforming the trace elements and the last-mentioned impurities into particulate impurities which are separated from the flue gas in the above-mentioned separation step. The particulate impurities separated in the separation step (2; 22; 52) are heated to such a high temperature that substantially all the organic impurities are decomposed, and that most of the trace elements are evaporated, while the remaining particulate impurities are transformed into vitreous sand by melting.

公开(公告)号：EP0403485B1

公开(公告)日：1993-03-31

申请号：EP89901145.6

申请日：1988-12-08

申请人： ABB FLÄKT AB

发明人： CARLSSON, Kurt

IPC分类号： B01D53/34

CPC分类号： B01D53/501 ,  B01D53/64 ,  B01D53/68

摘要： In the cleaning of process gases, such as flue gases, containing heavy metals, especially mercury and/or mercury compounds, and possibly also containing acidifying gases, such as hydrogen chloride and/or sulphur dioxide, the process gases are contacted in a contact reactor (6) with an aqueous solution or an aqueous suspension containing a first absorbent material which is reactive with the heavy metals of the process gases and is in the form of one or more metal sulphides, preferably sodium sulphide, for separating the heavy metals from the process gases. The water is then supplied in such an amount and in such a finely divided state that it is completely evaporated when contacting the process gases.

公开(公告)号：EP0688238B1

公开(公告)日：1997-06-04

申请号：EP94910077.0

申请日：1994-03-04

申请人： ABB FLÄKT AB

发明人： CARLSSON, Kurt

IPC分类号： B01D53/34

CPC分类号： B01D53/508 ,  B01D53/501 ,  B01D53/68

摘要： A method and an apparatus for cleaning a flue-gas stream containing hydrogen chloride and sulphur dioxide are disclosed. The flue gas is treated in a wet cleaner (5), thereafter injected with lime (9) and filtered through a filter (13). The method and the apparatus are distinguished by the fact that a part of the flue-gas stream is bypassed the wet cleaner (5) through a conduit (15), to join the remainder of the flue-gas stream before the filter (13). In this way, hydrogen chloride in the bypassed stream is reacted with injected lime to form calcium chloride, which promotes the sulphur-dioxide separation upon the injection of lime.

公开(公告)号：EP0688238A1

公开(公告)日：1995-12-27

申请号：EP94910077.0

申请日：1994-03-04

申请人： ABB FLÄKT AB

发明人： CARLSSON, Kurt

IPC分类号： B01D53 ,  C01B17

CPC分类号： B01D53/508 ,  B01D53/501 ,  B01D53/68

摘要： A method and an apparatus for cleaning a flue-gas stream containing hydrogen chloride and sulphur dioxide are disclosed. The flue gas is treated in a wet cleaner (5), thereafter injected with lime (9) and filtered through a filter (13). The method and the apparatus are distinguished by the fact that a part of the flue-gas stream is bypassed the wet cleaner (5) through a conduit (15), to join the remainder of the flue-gas stream before the filter (13). In this way, hydrogen chloride in the bypassed stream is reacted with injected lime to form calcium chloride, which promotes the sulphur-dioxide separation upon the injection of lime.