烟气循环流化床脱硫数学模型及应用  

MATHEMATIC MODELAND ITS APPLICATION TO DESULFURIZATION BYA CIRCULATING FLUIDIZED BED OF FLUE GAS

作　　者：马双忱[1] 赵毅[1] 华伟[1] 

机构地区：[1]华北电力大学环境科学与工程学院,河北保定071003

出　　处：《中国电机工程学报》2004年第10期228-232,共5页Proceedings of the CSEE

摘　　要：以双膜理论和传质理论为基础,建立了烟气循环流化床脱硫工艺的数学模型,模型采用了环/核流动以反映流化床脱硫的流动过程,因此模型更接近于流化床内气体和固体的真实流动。通过一系列的模型推导,得出了流化床内的脱硫效率方程。经实验验证所建预测模型可以较好地模拟流化床脱硫的实际情况,验证了模型的正确性。相信模型可以用来进一步研究流化床脱硫过程以及指导其工艺设计。A mathematic model for flue gas desulfurization (FGD) in a circulating fluidized bed (CFB) is built on the basis of the double-membrane theory and mass transfer theory. The model accounts for core/annulus flow to reflect the real flow state inside the CFB, so the model is closer to the actual flow of gas and solid inside the bed. Through a series of analytical model deduction, the efficiency equation of FGD in CFB is achieved. The analitical results accord with the experimental results of CFB FGD well. The established desulfurization model can be used to study further on CFB FGD and guide the process design for CFB FGD.

关 键 词：烟气循环流化床 脱硫过程 脱硫效率 脱硫工艺 传质理论 双膜理论 工艺设计 流动 固体 气体 

分 类 号：TM732[电气工程—电力系统及自动化] X701[环境科学与工程—环境工程]