4.
    发明专利
    未知

    公开(公告)号:DE4116364A1

    公开(公告)日:1992-11-19

    申请号:DE4116364

    申请日:1991-05-18

    Applicant: BASF AG

    Abstract: Catalyst containing metallic oxides, which in addition to oxides of titanium and/or zirconium, oxides of vanadium and/or niobium and oxides of molybdenum, tungsten and/or chromium, also contains sulphates of the alkaline earth metals, and which is used in a process for the oxidative breakdown of organic compounds in the waste gases from incinerator plants.

    5.
    发明专利
    未知

    公开(公告)号:DE3866535D1

    公开(公告)日:1992-01-09

    申请号:DE3866535

    申请日:1988-12-21

    Applicant: BASF AG

    Abstract: Removal of NOx from waste gas (I) by selective redn. with NH3 is carried out in a reaction zone in the presence of catalysts, (I) being supplieo to the reaction zone continuously and the NH3 at intervals. The novel features are a) the direction of (I) is reversed periodically; b) NH3 is added at the start of each period in excess of the stoichoimetric amt. for redn. of NOx; c) the NH3 supply is cut off before unreacted NH3 leaves the reaction zone with (I); and d) the (I) flow is reversed as soon as the NOx and/or NH3 content of (I) leaving the reaction zone exceeds a predetermined value.

    6.
    发明专利
    未知

    公开(公告)号:DE59203011D1

    公开(公告)日:1995-08-31

    申请号:DE59203011

    申请日:1992-04-24

    Applicant: BASF AG

    Abstract: Catalyst containing metallic oxides, which in addition to oxides of titanium and/or zirconium, oxides of vanadium and/or niobium and oxides of molybdenum, tungsten and/or chromium, also contains sulphates of the alkaline earth metals, and which is used in a process for the oxidative breakdown of organic compounds in the waste gases from incinerator plants.

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