公开(公告)号：DE4000609B4

公开(公告)日：2005-09-15

申请号：DE4000609

申请日：1990-01-11

Applicant: BASF AG

Inventor： MEISSNER RUPRECHT ,  GEIERHAAS HERBERT ,  ADLKOFER JUERGEN ,  LEBERT ULRICH

IPC: B01J23/22 ,  C01B17/79

公开(公告)号：DK144889A

公开(公告)日：1989-09-27

申请号：DK144889

申请日：1989-03-22

Applicant: METALLGESELLSCHAFT AG ,  BASF AG

Inventor： DOERR KARL-HEINZ ,  GRIMM HUGO ,  NEUMANN HEINZ ,  ADLKOFER JUERGEN

IPC: B01D53/60 ,  B01D53/74 ,  B01D53/86 ,  B01D53/94 ,  C01B17/56 ,  C01B17/76 ,  F23J15/00 ,  B01D53/36

Abstract: In flue gases or other humid exhaust gases which contain NOx and SO2, the NOx content is reduced and the SO2 content is oxidized to SO3 by a catalytic processing and the SO3 content is subsequently condensed as sulfuric acid. In order to prevent a clogging and deterioration of the catalyst and a contamination of the sulfuric acid the flue gas is subjected before the catalytic processing to a fine dedusting by a scrubbing with hot dilute sulfuric acid. In dependence on the water content of the flue gases the concentration of sulfuric acid in the dilute sulfuric acid and the temperature of the latter are adjusted so that no water will be transferred from the flue gases to the dilute sulfuric acid and no water or only a small amount of water will be transferred from the dilute sulfuric acid to the flue gas.

公开(公告)号：DK144889D0

公开(公告)日：1989-03-22

申请号：DK144889

申请日：1989-03-22

Applicant: METALLGESELLSCHAFT AG ,  BASF AG

Inventor： DOERR KARL-HEINZ ,  GRIMM HUGO ,  NEUMANN HEINZ ,  ADLKOFER JUERGEN

IPC: B01D53/60 ,  B01D53/74 ,  B01D53/86 ,  B01D53/94 ,  C01B17/56 ,  C01B17/76 ,  F23J15/00 ,  B01D53/36

Abstract: In flue gases or other humid exhaust gases which contain NOx and SO2, the NOx content is reduced and the SO2 content is oxidized to SO3 by a catalytic processing and the SO3 content is subsequently condensed as sulfuric acid. In order to prevent a clogging and deterioration of the catalyst and a contamination of the sulfuric acid the flue gas is subjected before the catalytic processing to a fine dedusting by a scrubbing with hot dilute sulfuric acid. In dependence on the water content of the flue gases the concentration of sulfuric acid in the dilute sulfuric acid and the temperature of the latter are adjusted so that no water will be transferred from the flue gases to the dilute sulfuric acid and no water or only a small amount of water will be transferred from the dilute sulfuric acid to the flue gas.