摘要
循环倍率是循环流化床(CFB)锅炉循环系统的基本特征值，是分析和设计循环流化床循环系统的前提。文章阐述循环流化床锅炉循环倍率的概念、循环倍率关系式的推导、分析及其应用。介绍作者提出的CFB锅炉循环系统的物理模型及由此导得的以给煤为基准的R循环倍率关系式及以随煤进入循环系统的固体质量为标准的K循环倍率关系式，并作进一步分析。将K循环倍率关系式与近年来普遍应用的Kj=η/(1－η)简化关系式作比较呈现出K关系式的正确性。循环倍率关系式（R或K）从理论上揭示CFB锅炉循环物料量建立和维持的基本规律，为分析循环系统奠定了理论基础，对循环系统的设计、运行有重大指导意义。
The circulating-rate is main character of circulating system of circulating fluidized bed bolier (CFBB), and it becomes basis of the analysis and design of CFB system. This paper introduces a physical model established by the author and with which the R expression of CFB boiler's circulating-rate on the basis of fed coal mass and K expression on the basis of solid mass entering into circulating system are derived and analyzed further. And K expression has been compared with the Kj expression, which was used in recent years. The R or K expression has announced objective law on establishment and maintenance of solid circulating mass.
出处
《锅炉技术》
北大核心
2001年第1期8-12,共5页
Boiler Technology
