14.
    发明专利
    未知

    公开(公告)号:NO910094A

    公开(公告)日:1991-07-11

    申请号:NO910094

    申请日:1991-01-09

    Applicant: BASF AG

    CPC classification number: B01D53/58 C05C1/00 Y02A50/2346

    Abstract: In a process for the removal of ammonia, and, if required, dust, from waste gases which arise in the production of fertilizers, the waste gases are treated in an absorption zone with a circulated ammonium nitrate solution. The ammonium nitrate solution has a temperature theta of 20 to 100 DEG C and, at the entry to the absorption zone, a pH of at least a value given by the following formula in which Y denotes the ammonia concentration of the gas to be treated in mg/m

Patent Agency Ranking