naa a22 4500 510766005 CHVBK 20180411083156.0 cr unu---uuuuu 180411e20130601xx s 000 0 eng 10.1007/s11630-013-0622-1 doi (NATIONALLICENCE)springer-10.1007/s11630-013-0622-1 Numerical simulation on pulverized coal combustion and NOx emissions in high temperature air from circulating fluidized bed [Elektronische Daten] [Jianguo Zhu, Ziqu Ouyang, Qinggang Lu] High temperature air combustion is a prospecting technology in energy saving and pollutants reduction. Numerical simulation on pulverized coal combustion and NOx emissions in high temperature air from circulating fluidized bed was presented. The down-fired combustor, taken as the calculation domain, has the diameter of 220 mm and the height of 3000 mm. 2 cases with air staging combustion are simulated. Compared the simulation results with experimental data, there is a good agreement. It is found that the combustion model and NOx formation model are applicable to simulate the pulverized coal combustion and NOx emissions in high temperature air from circulating fluidized bed. The results show that there is a uniform temperature profile along the axis of the down-fired combustor. The NOx emissions are lower than those of ordinary pulverized coal combustion, and the NOx emissions are 390 mg/m3 and 352 mg/m3 in Case 1 and Case 2, respectively. At the range of 300-600 mm below the nozzle, the NO concentration decreases, mainly resulting from some homogeneous reactions and heterogeneous reaction. NO concentration has a little increase at the position of 800 mm below the nozzle as the tertiary air supplied to the combustor at the position of 600 mm below the nozzle. Science Press, Institute of Engineering Thermophysics, CAS and Springer-Verlag Berlin Heidelberg, 2013 Pulverized coal combustion nationallicence Numerical simulation nationallicence High temperature air nationallicence NO x nationallicence Zhu Jianguo Institute of Engineering Thermophysics, Chinese Academy of Sciences, 100190, Beijing, China aut Ouyang Ziqu Institute of Engineering Thermophysics, Chinese Academy of Sciences, 100190, Beijing, China aut Lu Qinggang Institute of Engineering Thermophysics, Chinese Academy of Sciences, 100190, Beijing, China aut Journal of Thermal Science SP Science Press 22/3(2013-06-01), 261-268 1003-2169 22:3<261 2013 22 11630 https://doi.org/10.1007/s11630-013-0622-1 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11630-013-0622-1 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Zhu Jianguo Institute of Engineering Thermophysics, Chinese Academy of Sciences, 100190, Beijing, China aut NATIONALLICENCE 700 1- Ouyang Ziqu Institute of Engineering Thermophysics, Chinese Academy of Sciences, 100190, Beijing, China aut NATIONALLICENCE 700 1- Lu Qinggang Institute of Engineering Thermophysics, Chinese Academy of Sciences, 100190, Beijing, China aut NATIONALLICENCE 773 0- Journal of Thermal Science SP Science Press 22/3(2013-06-01), 261-268 1003-2169 22:3<261 2013 22 11630 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer