Abstract
SNCR (Selective Non-Catalytic Reduction) is a method for removing nitrogen oxides that has attracted a lot of attention and has been installed at several plants, both in Sweden and abroad. The chemical basis for the method is the reaction of nitrogen compounds having a large hydrogen content (e.g. ammonia, urea) with nitrogen oxides, resulting in the formation of nitrogen. The maximum removal is obtained when the reducing chemical is injected at a point where the fuel gas temperature is 870-1010 degrees C. This report is a summary of the results of a comprehensive study supported financially by NUTEK (Swedish National Board for Industrial and Technical Development), Svensk Energi Utveckling AB (Swedish Energy Development Corporation), Vattenfall AB (the largest Swedish power supplier), Vaermeforsk (Thermal Engineering Research Inst.) and the participating plants. The project has involved seven Swedish plants, where the environmental, operational and economic characteristics of the SNRC process have been evaluated. The reported operating experience from the plants indicate that the method is fairly simple and does not require a great deal of surveillance and service. In most cases there is no need to add personnel and no great changes in the maintenance routines have to be made. The SNCR
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Gromulski, J;
Hinderson, A;
Johansson, Annika;
Sfiris, G;
Sjoeberg, M;
Westermark, M
[1]
- Vattenfall Utveckling AB, Vaellingby (Sweden)
Citation Formats
Gromulski, J, Hinderson, A, Johansson, Annika, Sfiris, G, Sjoeberg, M, and Westermark, M.
Evaluation of SNCR-systems in steam- and hot water boilers in Sweden; Utvaerdering av SNCR-anlaeggningar i aang- och hetvattenpannor i Sverige.
Sweden: N. p.,
1994.
Web.
Gromulski, J, Hinderson, A, Johansson, Annika, Sfiris, G, Sjoeberg, M, & Westermark, M.
Evaluation of SNCR-systems in steam- and hot water boilers in Sweden; Utvaerdering av SNCR-anlaeggningar i aang- och hetvattenpannor i Sverige.
Sweden.
Gromulski, J, Hinderson, A, Johansson, Annika, Sfiris, G, Sjoeberg, M, and Westermark, M.
1994.
"Evaluation of SNCR-systems in steam- and hot water boilers in Sweden; Utvaerdering av SNCR-anlaeggningar i aang- och hetvattenpannor i Sverige."
Sweden.
@misc{etde_10105805,
title = {Evaluation of SNCR-systems in steam- and hot water boilers in Sweden; Utvaerdering av SNCR-anlaeggningar i aang- och hetvattenpannor i Sverige}
author = {Gromulski, J, Hinderson, A, Johansson, Annika, Sfiris, G, Sjoeberg, M, and Westermark, M}
abstractNote = {SNCR (Selective Non-Catalytic Reduction) is a method for removing nitrogen oxides that has attracted a lot of attention and has been installed at several plants, both in Sweden and abroad. The chemical basis for the method is the reaction of nitrogen compounds having a large hydrogen content (e.g. ammonia, urea) with nitrogen oxides, resulting in the formation of nitrogen. The maximum removal is obtained when the reducing chemical is injected at a point where the fuel gas temperature is 870-1010 degrees C. This report is a summary of the results of a comprehensive study supported financially by NUTEK (Swedish National Board for Industrial and Technical Development), Svensk Energi Utveckling AB (Swedish Energy Development Corporation), Vattenfall AB (the largest Swedish power supplier), Vaermeforsk (Thermal Engineering Research Inst.) and the participating plants. The project has involved seven Swedish plants, where the environmental, operational and economic characteristics of the SNRC process have been evaluated. The reported operating experience from the plants indicate that the method is fairly simple and does not require a great deal of surveillance and service. In most cases there is no need to add personnel and no great changes in the maintenance routines have to be made. The SNCR systems have not caused production problems at any of the plants studied. The most commonly reported problem seems to be nozzle congestion, which requires some surveillance and cleansing. Nozzle congestion can also cause varying injection performance, which may in turn lead to less removal, higher ammonia emissions and increased risk of furnace corrosion. 23 refs, 115 figs, 8 tabs}
place = {Sweden}
year = {1994}
month = {Oct}
}
title = {Evaluation of SNCR-systems in steam- and hot water boilers in Sweden; Utvaerdering av SNCR-anlaeggningar i aang- och hetvattenpannor i Sverige}
author = {Gromulski, J, Hinderson, A, Johansson, Annika, Sfiris, G, Sjoeberg, M, and Westermark, M}
abstractNote = {SNCR (Selective Non-Catalytic Reduction) is a method for removing nitrogen oxides that has attracted a lot of attention and has been installed at several plants, both in Sweden and abroad. The chemical basis for the method is the reaction of nitrogen compounds having a large hydrogen content (e.g. ammonia, urea) with nitrogen oxides, resulting in the formation of nitrogen. The maximum removal is obtained when the reducing chemical is injected at a point where the fuel gas temperature is 870-1010 degrees C. This report is a summary of the results of a comprehensive study supported financially by NUTEK (Swedish National Board for Industrial and Technical Development), Svensk Energi Utveckling AB (Swedish Energy Development Corporation), Vattenfall AB (the largest Swedish power supplier), Vaermeforsk (Thermal Engineering Research Inst.) and the participating plants. The project has involved seven Swedish plants, where the environmental, operational and economic characteristics of the SNRC process have been evaluated. The reported operating experience from the plants indicate that the method is fairly simple and does not require a great deal of surveillance and service. In most cases there is no need to add personnel and no great changes in the maintenance routines have to be made. The SNCR systems have not caused production problems at any of the plants studied. The most commonly reported problem seems to be nozzle congestion, which requires some surveillance and cleansing. Nozzle congestion can also cause varying injection performance, which may in turn lead to less removal, higher ammonia emissions and increased risk of furnace corrosion. 23 refs, 115 figs, 8 tabs}
place = {Sweden}
year = {1994}
month = {Oct}
}