CAJ | 학술논문

#在0.1 MW循环流化床富氧燃烧试验系统上，进行了大同烟煤在O2/再循环烟气(RFG)和O2/CO2配气下的高浓度富氧燃烧试验，研究燃烧温度和气氛对燃烧稳定性、烟气中CO2浓度和气体污染物排放的影响。研究结果表明，O2/RFG气氛下，在一次风氧气浓度为49.6%~55.2%、二次风氧气浓度为45.3%~51.7%范围内，循环流化床能够稳定运行，烟气中CO2浓度达到90%以上，SO2浓度为87~197 mg/MJ，N2O浓度为48~78 mg/MJ，NO仅为19~44 mg/MJ。与O2/CO2配气燃烧相比，O2/RFG燃烧时除NO浓度基本不变外，CO与SO2浓度均有一定程度的增加，而N2O浓度则明显降低。
#재0.1 MW순배류화상부양연소시험계통상，진행료대동연매재O2/재순배연기(RFG)화O2/CO2배기하적고농도부양연소시험，연구연소온도화기분대연소은정성、연기중CO2농도화기체오염물배방적영향。연구결과표명，O2/RFG기분하，재일차풍양기농도위49.6%~55.2%、이차풍양기농도위45.3%~51.7%범위내，순배류화상능구은정운행，연기중CO2농도체도90%이상，SO2농도위87~197 mg/MJ，N2O농도위48~78 mg/MJ，NO부위19~44 mg/MJ。여O2/CO2배기연소상비，O2/RFG연소시제NO농도기본불변외，CO여SO2농도균유일정정도적증가，이N2O농도칙명현강저。
In order to investigate the effects of combustion temperature and atmosphere on the combustion stability, CO2 concentration and gaseous pollutants emissions in flue gas, in a 0.1 MW circulating fluidized bed (CFB) oxy-fuel combustion facility, oxy-combustion experiments with Datong coal were carried out at O2/CO2 and O2/ recycled flue gas (RFG) atmosphere with high oxygen concentration. The test results show that when the oxygen concentration of the primary air ranges from 49.6%to 55.2%and that of the secondary air is in the range from 45.3%to 51.7%, the CFB oxy-fuel combustion facility maintains stably at O2/RFG atmosphere. In flue gas, CO2 concentration can reach above 90%, SO2 concentration is 87 to 197 mg/MJ, N2O concentration is 48 to 78 mg/MJ, and NO concentration is only 19 to 44 mg/MJ. Compared with the result of O2/CO2 combustion, the concentration of CO and SO2 increases to a certain degree, while N2O concentration decreases obviously, and NO concentration basically remains the same.