TY - JOUR AU - Błaszczuk, Artur AU - Nowak, Wojciech AU - Jagodzik, Szymon PY - 2013/03/18 TI - Effects of operating conditions on deNOx system efficiency in supercritical circulating fluidized bed boiler JF - Journal of Power Technologies; Vol 93 No 1 (2013) KW - supercritical CFB boiler, SNCR method, deNOx system efficiency, oxygen concentration, flue gas temperature N2 - 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 DeNO x 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 O 2 concentration (i.e. 0.94, 1.0 and 1.13). The efficiency of deNO x system increases (ca. 53%) with increasing relative ammonia mass flow. A maximum DeNO x 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, deNO x system efficiency from 36% to 70% was observed and performs a standard emissions relate to permissible concentration of NO x in the flue gas. UR - https://papers.itc.pw.edu.pl/index.php/JPT/article/view/400