Effects of operating conditions on DeNOx system efficiency in supercritical circulating fluidized bed boiler

• Autorzy: Błaszczuk A. , Nowak W. , Jagodzik S.
• Języki publikacji: EN

Abstrakty

EN

The purpose of this work was to determine the impact of a operating conditions on the deNOx system efficiency.in a 966MWth supercritical circulating fluidized bed boiler. Experimental tests were carried out on a full-scale DeNOx system installed in the world’s largest once through supercritical circulating fluidized bed boiler. In this work, the effects of the following parameters were studied: flue gas temperature inside the separators between 636°C and 845°C, relative ammonia mass flow over the range 0.22-1.00 and three relative values of O2 concentration (i.e. 0.94, 1.0 and 1.13). The efficiency of deNOx system increases (ca. 53%) with increasing relative ammonia mass flow. A maximum DeNOx system efficiency (ca. 70%) was achieved at flue gas temperature in the range from 720°C to 790°C. In the case of all unit loads, deNOx system efficiency from 36% to 70% was observed and performs a standard emissions relate to permissible concentration of NOx in the flue gas.

Słowa kluczowe

EN

supercritical CFB boiler; SNCR method; DeNOx system efficiency; oxygen concentration; flue gas temperature

PL

nadkrytyczny kocioł CFB; metoda SNCR; sprawność układu DeNOx; stężenie tlenu; temperatura spalin

• Wydawca: Institute of Heat Engineering, Warsaw University of Technology
• Czasopismo: Journal of Power Technologies
• Rocznik: 2013
• Tom: Vol. 93, nr 1
• Strony: 1--8
• Opis fizyczny: Bibliogr. 23 poz., rys., tab., wykr.

Twórcy

autor

Błaszczuk A.

• Czestochowa University of Technology, Institute of Advanced Energy Technologies, Poland

autor

Nowak W.

• Czestochowa University of Technology, Institute of Advanced Energy Technologies, Poland

autor

Jagodzik S.

• Tauron Generation S.A., Lagisza Power Plant, Poland

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