发明申请
US20050255605A1 In-line localized monitoring of catalyst activity in selective catalytic NOx reduction systems
失效
选择性催化NOx还原系统中催化剂活性的在线局部监测
- 专利标题： In-line localized monitoring of catalyst activity in selective catalytic NOx reduction systems
- 专利标题（中）： 选择性催化NOx还原系统中催化剂活性的在线局部监测
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申请号： US11112667申请日： 2005-04-21
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公开(公告)号： US20050255605A1公开(公告)日： 2005-11-17
- 发明人: Lawrence Muzio , Randall Smith
- 申请人： Lawrence Muzio , Randall Smith
- 申请人地址： US CA Laguna Hills
- 专利权人： FOSSIL ENERGY RESEARCH CORP.
- 当前专利权人： FOSSIL ENERGY RESEARCH CORP.
- 当前专利权人地址： US CA Laguna Hills
- 主分类号： B01D53/86
- IPC分类号： B01D53/86 ; B01D53/90 ; G01N1/22 ; G01N33/00
摘要：
Localized catalyst activity in an SCR unit for controlling emissions from a boiler, power plant, or any facility that generates NOx-containing flue gases is monitored by one or more modules that operate on-line without disrupting the normal operation of the facility. Each module is positioned over a designated lateral area of one of the catalyst beds in the SCR unit, and supplies ammonia, urea, or other suitable reductant to the catalyst in the designated area at a rate that produces an excess of the reductant over NOx on a molar basis through the designated area. Sampling probes upstream and downstream of the designated area draw samples of the gas stream for NOx analysis, and the catalyst activity is determined from the difference in NOx levels between the two probes.
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