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Evaluation of SNCR-systems in steam- and hot water boilers in Sweden; Utvaerdering av SNCR-anlaeggningar i aang- och hetvattenpannor i Sverige

Technical Report:

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  More>>
Authors:
Gromulski, J; Hinderson, A; Johansson, Annika; Sfiris, G; Sjoeberg, M; Westermark, M [1] 
  1. Vattenfall Utveckling AB, Vaellingby (Sweden)
Publication Date:
Oct 01, 1994
Product Type:
Technical Report
Report Number:
SVF-514
Reference Number:
SCA: 540120; 010800; PA: SWD-94:007505; EDB-95:017020; SN: 95001301707
Resource Relation:
Other Information: DN: Figures and tables with text in English; PBD: Oct 1994
Subject:
54 ENVIRONMENTAL SCIENCES; 01 COAL, LIGNITE, AND PEAT; NITROGEN OXIDES; REMOVAL; EVALUATION; AIR POLLUTION CONTROL; EMISSION; FLUIDIZED BED BOILERS; CIRCULATING SYSTEMS; REFUSE-FUELED BOILERS; HOT WATER; STEAM; REFUSE DERIVED FUELS; REFUSE-FUELED POWER PLANTS; FOSSIL-FUEL POWER PLANTS; WOOD-FUEL POWER PLANTS; PEAT; WOOD FUELS; BIOMASS; COAL; FLUE GAS; UREA; AMMONIA; NUMERICAL DATA; 540120; 010800; CHEMICALS MONITORING AND TRANSPORT; WASTE MANAGEMENT
OSTI ID:
10105805
Research Organizations:
Stiftelsen foer Vaermeteknisk Forskning, Stockholm (Sweden)
Country of Origin:
Sweden
Language:
Swedish
Other Identifying Numbers:
Journal ID: ISSN 0282-3772; Other: ON: DE95723969; TRN: SE9407505
Availability:
OSTI; NTIS
Submitting Site:
SWD
Size:
153 p.
Announcement Date:
Jun 30, 2005

Technical Report:

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}
}