公开(公告)号：EP3371101A1

公开(公告)日：2018-09-12

申请号：EP16784921.5

申请日：2016-10-24

申请人： Haldor Topsøe A/S

发明人： GRANROTH, Mårten Nils Rickard ,  SØRENSEN, Per Aggerholm ,  CHRISTENSEN, Kurt, Agerbæk

IPC分类号： C01B17/78 ,  C01B17/79 ,  C01B17/80 ,  B01J19/00 ,  B01D53/14

CPC分类号： C01B17/78 ,  B01D53/1481 ,  B01D2255/202 ,  B01D2255/20723 ,  B01D2257/302 ,  C01B17/79 ,  C01B17/803 ,  Y02A50/2348 ,  Y02A50/2349

摘要： The invention is a method and a sulfuric acid plant design for reduction of start-up SO2, SO3 and H2SO4 emissions in sulfuric acid production, in which SO2 is converted to SO3 in n successive catalyst beds, where n is an integer >1. The final catalytic beds are used as absorbents for SO2 to SO3 during the start-up procedure, and one or more of the m beds downstream the first bed are purged, either separately or simultaneously, with hot gas, where m is an integer > 1 and m