公开(公告)号：US11007498B2

公开(公告)日：2021-05-18

申请号：US16650616

申请日：2018-10-01

申请人： HALDOR TOPSØE A/S

发明人： Geert Colding ,  Uffe Bach Thomsen

IPC分类号： C01B17/765 ,  B01J8/04 ,  C01B17/80

摘要： In a converter for the catalytic oxidation of SO2 to SO3 in a sulfuric acid plant, which comprises a boiler section for the cooling of process gas between catalytic layers (beds), one or more water tube boilers (inter-bed boilers) having horizontal or slightly sloped tubes are used to cool the process gas between the catalytic layers (beds) in the converter. Each water tube boiler is provided with a process gas side bypass to control the temperature to the downstream catalyst layer.