关键词: font-family:-apple-system, blinkmacsystemfont, ", font-size:14px, background-color:#FFFFFF, ">循环流化床, 燃煤锅炉, Fe基载氧体, 辅助燃烧性能, CO转化率, 反应温度, 反应时间, 过量空气系数

Abstract: Under the dual carbon target, circulating fluidized bed (CFB) boiler technology is not only a coal-fired power generation technology with great commercial value and development potential for refining and chemical enterprises, but also brings carbon emission issues to these enterprises. With the development of CFB boiler technology and the increasing capacity of boilers, the problem of poor air-fuel mixing caused by the position and method of feeding and air intake during the operation of large industrial CFB boilers has gradually become prominent. To improve the combustion efficiency and stability of coal-fired CFB boilers and reduce carbon emissions, an Fe-based oxygen carrier was developed based on the principle of oxygen carrier aided combustion (OCAC) technology, and its performance was analyzed on a bubbling bed reactor and a 0.3 MW/h CFB coal-fired reactor. The analysis found that the developed Fe-based oxygen carrier has excellent oxygen absorption and release performance, with a CO conversion rate of more than 88% on the bubbling bed and 52% to 65% on the CFB reactor. The emissions of pollutants such as NOx and SO2 in the flue gas were reduced.

Key words: font-family:-apple-system, blinkmacsystemfont, ", font-size:14px, background-color:#FFFFFF, ">circulating fluidized bed, coal-fired boiler, Fe-based oxygen carrier, auxiliary combustion performance, conversion rate of CO, reaction temperature, reaction time, excess air coefficient