公开(公告)号：DE19817468A1

公开(公告)日：1999-10-21

申请号：DE19817468

申请日：1998-04-20

Applicant: BASF AG

Inventor： SACHWEH BERND ,  ULBRICH MICHAEL-DIETER ,  WEISKER WOLF-STEFFEN

IPC: B01D47/14 ,  B01D53/14 ,  B01D53/78 ,  B01D53/77 ,  B01D47/00

Abstract: Gas streams containing soluble-salt forming gaseous pollutant and aerosol pollutant are treated by passing the gas at a specified velocity and temperature, and if necessary after saturating the gas with vapor, through a scrubbing column where it is washed with liquid, at a temperature of at least 2 degrees C lower than the gas temperature, to produce a vapor phase which is more than 100% saturated. Gas streams containing at least one soluble-salt forming gaseous pollutant and at least one aerosol pollutant, of particle size 0.01-10 micron, are treated to remove these by passing the gas at a velocity of at least 0.5m/s, at a temperature of 30-100 degrees C, and if necessary after saturating the gas with vapor, through a scrubbing column providing a contact area of 50-1000m /m packing, where it is washed with liquid, at a temperature at least 2 degrees C lower than the gas temperature, to produce a vapor phase which is more than 100% saturated. The scrubbing liquid may be water, acid, alkali or organic solvent.