随着循环流化床在我国的广泛应用，对其开展建模和仿真的研究也就越来越有必要。在分析循环流化床内部各种过程的基础上，本文提炼了反映循环流化床正确动态特性必须描述的过程―主导过程。在此基础上，本文通过仔细分析循环流化床在各个工况下的运行，建立了使用同一套方程从宏观上来描述全工况运行的循环流化床整体数学模型。为了求解整体模型，同时也为了全工况地描述循环流化床的传热、流动、燃烧特性，本文还建立了描述这些特性的子模型。同时，针对仿真对象，本文建立除了炉膛本体之外的旋风分离器、J-阀、冷渣器等部件建立了全工况数学模型，使得模型能够全工况地模拟循环流化床燃烧系统各个部件的运行。本文还研究了建立循环流化床仿真模型的关键技术－计算结果的多工况数据吻合。通过分析，本文得出实现多工况数据吻合的关键参数，并提炼这些关键参数的主导因素。通过建立关键参数与主导因素之间的一一对应关系，本文成功的保证了模型计算结果的多工况数据吻合。通过对这个数学模型的全面测试和仿真研究，本文验证了模型可以全工况的模拟循环流化床的运行，在动态变化过程中具有正确的动态特性。本文还验证了通过提炼关键参数主导因素来满足多工况数据吻合的可行性。本文研究结果为在国内首次建立循环流化床实时仿真培训装置奠定了基础，所建模型已经成功应用与我国第一台循环流化床仿真机――镇海炼化厂循环流化床仿真机。最后，本文还对IGCC系统的建模进行了初步探讨。

With the widely application of Circulating Fluidized Bed Combustion (CFBC) in our country, it becomes more and more necessary to study the modeling and simulating of CFBC.By analyzing the interior processes of CFBC, the key processes are abstracted in order to reflect the proper dynamic behavior of CFBC. Based on this, by carefully anatomizing every working condition, the main body of CFBC model was established by using a same set of formulas to macroscopically describe the full working condition behavior. To solve the main body of CFBC model, and meanwhile, to describe the characteristics of heat transfer, flow status and combustion of CFBC, some relevant sub-models are established. Finally, in accordance with the particular object, the mathematical model of other components besides combustion, such as cyclone separator, and J-valve (loop seal) to simulate the full working condition behavior of all components of CFBC system. The key technique to establish a simulating model of CFBC is also studied, which is to make the multi-working condition results of model to be congruent to designed data. The key parameters of the model to fulfill data coincidence are also extracted, then the leading factors of these key parameters. By establishing the one-to-one correspondent function between these key parameters and leading factors, the data coincidence in multi-working condition is successfully fulfilled. By detailed test and simulation study, it is confirmed that the model can successfully describe the full working condition behavior and has proper dynamic behavior. And the applicability of the method of extracting leading factors to fulfill data coincidence is verified. The research result of this thesis is a strong foundation to the first visual training simulator of CFBC in China. And the model established by this thesis was successfully applied in the first CFBC power plant simulator of our country—Zhenhai Refinery Company CFBC power plant simulator.Preliminary study of Modeling Integrated Gasification of Combined Cycle system is also been made as the last part of this thesis.