发明授权
US06946107B2 Conversion of nitrogen oxides in the presence of a catalyst supported on a mesh-like structure
有权
在负载在网状结构上的催化剂存在下氮氧化物的转化
- 专利标题: Conversion of nitrogen oxides in the presence of a catalyst supported on a mesh-like structure
- 专利标题(中): 在负载在网状结构上的催化剂存在下氮氧化物的转化
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申请号: US10385369申请日: 2003-03-10
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公开(公告)号: US06946107B2公开(公告)日: 2005-09-20
- 发明人: Joakim A. Carlborg , Yun-Feng Chang , Lawrence L. Murrell , Robert E. Trubac , Rudolf A. Overbeek , Verena R. Schmidt , Chuen Y. Yeh , Lothar Schuh
- 申请人: Joakim A. Carlborg , Yun-Feng Chang , Lawrence L. Murrell , Robert E. Trubac , Rudolf A. Overbeek , Verena R. Schmidt , Chuen Y. Yeh , Lothar Schuh
- 申请人地址: US NJ Bloomfield
- 专利权人: ABB Lummus Global, Inc.
- 当前专利权人: ABB Lummus Global, Inc.
- 当前专利权人地址: US NJ Bloomfield
- 代理机构: Carella, Byrne, Bain, Gilfillan, Cecchi et al.
- 代理商 Elliot M. Olstein; William Squire
- 主分类号: B01D53/86
- IPC分类号: B01D53/86 ; B01D53/88 ; B01D53/94 ; B01J21/06 ; B01J23/22 ; B01J23/30 ; B01J23/42 ; B01J35/04 ; B01J35/06 ; B01J37/02 ; F01N3/28 ; F01N13/02 ; B01J8/00 ; C01B21/00
摘要:
An apparatus for converting at least one nitrogen oxide, such as NO, O2, or N2O converts oxide in the presence of a catalyst supported on a metal mesh-like structure. The mesh-like structure is preferably fibrous formed of metal or ceramic fibers which may include knitted wire, sintered metal fibers and so on and has a porosity greater than about 85%. The mesh is formed into channels, preferably corrugations, and includes vortex generators, which generate turbulence to create a pressure differential across the mesh, to promote flow of fluids through the mesh pores which normally do not exhibit flow therethrough in the absence of such pressure differential. Preferred embodiments of structured packing and monoliths are disclosed each having a catalyst preferably in the mesh pores and/or coated on the fibers for converting the nitrogen oxide. In one embodiment, corrugated mesh-like sheets are arranged in series with a ceramic solid monolith structure with the corrugated sheets initially receiving the fluid with the at least one nitrogen oxide to be converted and which fluid then flows into the monolith structure to complete the conversion. In other embodiments, the mesh-like structure may have different configurations including a honeycomb arrangement and may include metal, metal and ceramic or ceramic and may be fibrous.