公开(公告)号：US11198093B2

公开(公告)日：2021-12-14

申请号：US16331162

申请日：2017-09-11

申请人： HALDOR TOPSØE A/S

发明人： Niklas Bengt Jakobsson ,  Peter Bo Olsen ,  Per Aggerholm Sørensen ,  Anders Theilgaard Madsen

IPC分类号： B01D53/86 ,  B01D53/00 ,  B01D53/04 ,  B01D53/50 ,  B01D53/75 ,  C01B17/04 ,  C01B17/56 ,  B01J21/08 ,  B01J23/22 ,  D01F13/02

摘要： A method for cleaning an off-gas from viscose production, essentially containing H2S and CS2, comprises passing the gas through a catalytic reactor containing a direct oxidation type catalyst, such as V2O5 on silica, to convert H2S in the gas to elemental sulfur, SO2 or mixtures thereof, either via the oxygen present in the gas or via oxygen added to the gas stream. Elemental sulfur and SO2 are removed from the effluent gas from the catalytic reactor, and the unconverted CS2 is recycled to the viscose production process.

公开(公告)号：US20190255484A1

公开(公告)日：2019-08-22

申请号：US16331162

申请日：2017-09-11

申请人： HALDOR TOPSØE A/S

发明人： Niklas Bengt Jakobsson ,  Peter Bo Olsen ,  Per Aggerholm Sørensen ,  Anders Theilgaard Madsen

IPC分类号： B01D53/86 ,  B01D53/75 ,  B01D53/00 ,  B01D53/50 ,  B01D53/04 ,  D01F13/02 ,  B01J23/22 ,  B01J21/08 ,  C01B17/04 ,  C01B17/56

摘要： A method for cleaning an off-gas from viscose production, essentially containing H2S and CS2, comprises passing the gas through a catalytic reactor containing a direct oxidation type catalyst, such as V2O3 on silica, to convert H2S in the gas to elemental sulfur, SO2 or mixtures thereof, either via the oxygen present in the gas or via oxygen added to the gas stream. Elemental sulfur and SO2 are removed from the effluent gas from the catalytic reactor, and the unconverted CS2 is recycled to the viscose production process.