摘要
针对循环流化床燃烧与运行的本质特点，建立了以床内全部未燃烬碳为对象的残碳动力学燃烧及动态能量平衡数学模型，加上以排渣量为主动操作量的动态物料平衡模型、考虑流化床压降与风量间相互作用的复合压降模型、以及有关流动参数及传热系数分布特性的考虑，构成了基本反映循环流化床本质特性的完整动态数学模型。借助先进图形化建模工具，建立了包括流化床燃烧系统、蒸汽发生器系统和各种辅助系统在内的循环流化床锅炉系统仿真平台，并为控制策略研究和控制系统测试设置了必要的接口。仿真计算及实验验证了模型及平台的正确性及实时性。
With the consideration of the essence of circulating fluidized bed (CFB), a kinetic combustion and dynamic energy balance model is established by taking all unburnt carbon as a whole as object. Besides, the dynamic inventory mass balance model taking bottom ash removal rate as active manipulating variable and the compounded pressure drop model taking the interaction between pressure drop and air feed rate into account are also established. All these models compose an entire dynamic CFB model, which can reflect the essential characteristics of CFB. With the aid of an advanced graphical modeling tool, the dynamic simulation platform is accomplished for the whole boiler system including CFB combustor, steam generating system and other auxiliary systems. Tests are finally made and verified the correctness and the efficiency of the model and the platform.
出处
《清华大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
1999年第3期100-102,共3页
Journal of Tsinghua University(Science and Technology)
基金
国家自然科学基金
国家攀登计划
