SCR (Selective Catalytic Reduction)
- Company Name:Nano Co., Ltd.
- Membership:Free Member
- Member Since:2003. 12.08
- Country/Region:Korea
- City:Gyeongsangbuk-do
- Contact:Joo-seob Kwak
- Related Keywords:Catalytic Reduction, catalyst reduction
Nano Co., Ltd.
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- SCR (Selective Catalytic Reduction)
Contact us
Nano Co., Ltd.
[Korea]
- Address
- 1188 Magong-ri, Cheongri-myeon, Sangjoo-si, Gyeongsangbuk-do
- Phone
- 82-54-5335887
- Contact name
- Joo-seob Kwak
Quick Information
- Place of Origin: Korea
Description
De-NOx SCR catalyst removes the NOx contained in exhaust gases discharging from power plants, industrial boilers, ships, incinerators, chemical plants and diesel automobiles etc.
SCR Catalyst
SCR (Selective catalytic reduction) is a typical De-NOx technology which deoxidizes NOx to Nitrogen on the surface of catalyst. Ammonia and Urea are used for reductant and then NOx is reduced to Nitrogen and water at lower temperature due to the SCR catalyst. This technology has been widely used in industrial facility since it showed a high reduction rate of NOx up to 90%.
SCR Reaction Mechanism
Comparison of De-NOx Technology
|
Technology
|
SCR
|
SNCR
|
Low Nox Burner
|
|
Outline
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- Inject NH3 to the catalyst - reduce NOx |
- Inject UREA/NH3 - NOx reduction without catalyst |
- Combustion method - Lower oxygen concentration and flame temperature |
|
NOx removal rate
|
70~90%
|
25~50%
|
30~50%
|
|
Investment
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High
|
Low
|
Medium
|
|
Operation Expense
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Medium
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High
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Low
|
|
Consideration
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- Installallation space - Catalyst removal and replacement |
- Stucture of combustion furnace - Residence time of reductant |
- Fan capacity - Stability of flame |
|
Overall Evaluation
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- Applied to medium & large facility | - Restrict the operation condition - Existing customer unsatifaction factors |
- Suitable for small facility - Existing the limited NOx removal rate |
Comparison of air regulation invarious countries
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