公开(公告)号：EP2203242A2

公开(公告)日：2010-07-07

申请号：EP08799027.1

申请日：2008-08-29

申请人： SpectraSensors, Inc.

发明人： BAUM, Marc, M. ,  MOSS, John ,  FEITISCH, Alfred ,  ZHOU, Xin ,  LIU, Xiang ,  KWAN, Alex

IPC分类号： B01D53/52 ,  B01D53/58 ,  B01D53/68 ,  G01N30/02

CPC分类号： B01D53/685 ,  B01D53/42 ,  B01D53/52 ,  B01D53/58 ,  B01D2251/512 ,  B01D2251/602 ,  B01D2251/606 ,  B01D2259/40

摘要： Scrubber media for reactive gases, that can include but are not necessarily limited to hydrogen chloride (HCl), hydrogen sulfide (H2S), hydrogen fluoride (HF), and ammonia (NH3), can include reactive particles, potentially as small as nano-scale, that can optionally be suspended on macro-scale carrier particles. Reactive gases can be converted to non-volatile compounds by being passed through a bed of such scrubber media. Such scrubber media can be used to remove reactive gases from gas mixtures. Potential applications include differential absorption spectroscopy, air pollutant emission controls, and the like. Methods of preparing scrubber media are also described.

公开(公告)号：EP2203242B1

公开(公告)日：2013-01-09

申请号：EP08799027.1

申请日：2008-08-29

申请人： SpectraSensors, Inc.

发明人： BAUM, Marc, M. ,  MOSS, John ,  FEITISCH, Alfred ,  ZHOU, Xin ,  LIU, Xiang ,  KWAN, Alex

IPC分类号： B01D53/52 ,  B01D53/58 ,  B01D53/68 ,  G01N30/02

CPC分类号： B01D53/685 ,  B01D53/42 ,  B01D53/52 ,  B01D53/58 ,  B01D2251/512 ,  B01D2251/602 ,  B01D2251/606 ,  B01D2259/40

摘要： A method is disclosed which comprises maintaining a scrubber medium at a temperature in a range of -20°C to 85°C, the scrubber medium comprising nanoparticles of a reactive metal oxide material having first aerodynamic diameters of less than 250 nm that are adhered to carrier particles having second aerodynamic diameters in a range of 10 to 250 microns and that are inert relative to one or more background compounds, wherein a mass ratio of the reactive metal oxide to the carrier particles is in a range of 20% to 30%, and wherein the nanoparticles of the reactive metal oxide are adhered to the carrier particles by one or more of van der Waals and electrostatic forces. In a further step a gas mixture is contacted with the scrubber medium while the scrubber medium is maintained at the temperature, the gas mixture comprising a reactive compound and the one or more background compounds, the reactive compound comprising a gas-phase acid, the contacting causing the reactive compound to react with the reactive metal oxide material to convert the reactive compound and at least one metal oxide site on the nanoparticles to one or more metal-anion surface compounds. An apparatus, a composition and a refreshing method are also disclosed.