【摘要】 提出富氧燃烧循环流化床锅炉在真实烟气循环运行方式下燃料燃烧过程热力计算方法。基于烟气增量分析方法推导了燃料燃烧过程中实际烟气体积的准确计算公式。建立富氧燃烧循环流化床锅炉烟气循环过程动态模型和烟气成分动态变化特性模型,可以对锅炉从启动到稳定运行的全工况运行过程中的循环烟气流量、氧气流量以及烟气成分的动态变化特性以及影响因素进行定量分析计算。在此基础上,结合富氧燃烧循环流化床锅炉热效率计算方法,分析了不同炉内氧气浓度对富氧燃烧循环流化床锅炉运行经济性的影响。更多还原

【Abstract】 A thermal calculation method was presented which is for the fuel combustion process of the oxy-fuel combustion circulating fluidized bed boiler under the real flue gas circulation operation mode. Based on the flue gas incremental analysis method the accurate calculation formula of the actual flue gas volume in the fuel combustion process was deduced. The flue gas circulation process dynamic model and the flue gas composition dynamic variation characteristics models for the oxy-fuel combustion circulating fluidized bed boiler were built which can quantitative analyze and calculate the dynamic variation characteristics and the influencing factors of the circulation flue gas flow, oxygen flow and the flue gas composition during the boiler full condition operation process from start-up to stable operation. On this basis, combining the oxy-fuel combustion circulating fluidized bed boiler thermal efficiency calculation method, the influence on the operation economy of the oxy-fuel combustion circulating fluidized bed boiler by the different oxygen concentrations was analyzed.更多还原