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Decision support system on line to minimize the NO{sub x} emission. Results from Oerebro Energi; Beslutsstoed on line foer minimering av NO{sub x}. Resultat fraan Oerebro Energi

Abstract

A Decision Support System to reduce NO{sub x} emission from combustion processes with SNCR system have been developed and tested in full scale at Oerebro Energy. The boiler is a 165 MWh{sub th} CFB and have been fired with a mixture of biomass, peat and coal. The results proves that the EuroSim method works to calculate the derivative included in the Decision Support System. The Decision Support System is a tool for the operator of the plant, he will be informed of the advantage of making an increase or decrease of the ammonia flow or excess air. The trend curves that are presented to the operator includes information about the economic value to make an adjustment of the ammonia flow. The derivative dNO{sub x}/dO{sub 2} shows the advantage of making a reduction in the excess air level, concerning the fee for NO{sub x}. In this case it is important to take into consideration the risk for understoichiometric combustion and corrosion. The results from the full scale test in the Oerebro Plant shows that during some time periods it is economical to shut off the ammonia flow. The derivative dNO{sub x}/dAF is under the profitability limit. This indicate that the cost  More>>
Authors:
Bergdahl, B G; Liao, B; Sieurin, J [1] 
  1. EuroSim AB, Nykoeping (Sweden)
Publication Date:
May 01, 1996
Product Type:
Technical Report
Report Number:
SVF-573
Reference Number:
SCA: 540120; PA: SWD-96:007483; EDB-96:145177; NTS-97:001307; SN: 96001663839
Resource Relation:
Other Information: DN: Figures with text in English; PBD: May 1996
Subject:
54 ENVIRONMENTAL SCIENCES; AIR POLLUTION CONTROL; ON-LINE CONTROL SYSTEMS; NITROGEN OXIDES; DECISION MAKING; COMBUSTION; FLUIDIZED-BED COMBUSTION; CIRCULATING SYSTEMS; POWER RANGE 100-1000 MW; AMMONIA; FIELD TESTS; EXPERIMENTAL DATA
OSTI ID:
371277
Research Organizations:
Stiftelsen foer Vaermeteknisk Forskning, Stockholm (Sweden)
Country of Origin:
Sweden
Language:
Swedish
Other Identifying Numbers:
Journal ID: ISSN 0282-3772; Other: ON: DE97700142; TRN: SE9607483
Availability:
OSTI as DE97700142
Submitting Site:
SWD
Size:
50 p.
Announcement Date:

Citation Formats

Bergdahl, B G, Liao, B, and Sieurin, J. Decision support system on line to minimize the NO{sub x} emission. Results from Oerebro Energi; Beslutsstoed on line foer minimering av NO{sub x}. Resultat fraan Oerebro Energi. Sweden: N. p., 1996. Web.
Bergdahl, B G, Liao, B, & Sieurin, J. Decision support system on line to minimize the NO{sub x} emission. Results from Oerebro Energi; Beslutsstoed on line foer minimering av NO{sub x}. Resultat fraan Oerebro Energi. Sweden.
Bergdahl, B G, Liao, B, and Sieurin, J. 1996. "Decision support system on line to minimize the NO{sub x} emission. Results from Oerebro Energi; Beslutsstoed on line foer minimering av NO{sub x}. Resultat fraan Oerebro Energi." Sweden.
@misc{etde_371277,
title = {Decision support system on line to minimize the NO{sub x} emission. Results from Oerebro Energi; Beslutsstoed on line foer minimering av NO{sub x}. Resultat fraan Oerebro Energi}
author = {Bergdahl, B G, Liao, B, and Sieurin, J}
abstractNote = {A Decision Support System to reduce NO{sub x} emission from combustion processes with SNCR system have been developed and tested in full scale at Oerebro Energy. The boiler is a 165 MWh{sub th} CFB and have been fired with a mixture of biomass, peat and coal. The results proves that the EuroSim method works to calculate the derivative included in the Decision Support System. The Decision Support System is a tool for the operator of the plant, he will be informed of the advantage of making an increase or decrease of the ammonia flow or excess air. The trend curves that are presented to the operator includes information about the economic value to make an adjustment of the ammonia flow. The derivative dNO{sub x}/dO{sub 2} shows the advantage of making a reduction in the excess air level, concerning the fee for NO{sub x}. In this case it is important to take into consideration the risk for understoichiometric combustion and corrosion. The results from the full scale test in the Oerebro Plant shows that during some time periods it is economical to shut off the ammonia flow. The derivative dNO{sub x}/dAF is under the profitability limit. This indicate that the cost for the ammonia is higher than the fee for the NO{sub x} emission. If the ammonia flow is added in excess, the emission of ammonia and N{sub 2}O will increase. During other time periods the Decision Support System shows that it is profitable to increase the ammonia flow, the derivative is lower than -0,2. The derivative dNO{sub x}/dO{sub 2} is normally between 10 and 20 (ppm/%). This indicate that it is a great potential to reduce the NO{sub x} fee by decreasing the excess air level in the boiler. 3 refs, 23 figs}
place = {Sweden}
year = {1996}
month = {May}
}